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Mohamed Saleem, S. M., i L. Senthil Murugan. "Performance Analysis of Various Phases of SRM with Classical and New Compact Converter". TELKOMNIKA Indonesian Journal of Electrical Engineering 16, nr 2 (1.11.2015): 256. http://dx.doi.org/10.11591/tijee.v16i2.1610.
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In recent years, considerable attention has been given to find the compact and low cost power converter topology for Switched Reluctance Motor (SRM) drive to meet the emerging applications such as plotters, fans, pumps, screw rotary compressor drives, high speed application drives above 30,000 RPM. This paper is concerned with such as attempt to formulate a new compact power converter for SRM drive. The proposed power converter has reduced number of power electronic components which makes the converter compact and also reduce the switching losses. The power factor plays a vital issue in the usage of power electronic converters. The power boost converter and PI controller. A Simulink system is developed for 3Φ SRM by using MATLAB software. The proposed converter performance is compared with the classical converter and analysis results are presented.<strong> </strong>
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Barnes, M., i C. Pollock. "Power electronic converters for switched reluctance drives". IEEE Transactions on Power Electronics 13, nr 6 (listopad 1998): 1100–1111. http://dx.doi.org/10.1109/63.728337.
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Gopan K., V., i J. D. Shree. "Implementation of a High Power Quality BLDC Motor Drive Using Bridgeless DC to DC Converter with Fuzzy Logic Controller". Engineering, Technology & Applied Science Research 12, nr 5 (2.10.2022): 9178–85. http://dx.doi.org/10.48084/etasr.5213.
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Electric motor drives based on electronic power converters having good power quality parameters are getting huge acceptance. Conventional Diode Bridge Rectifier (DBR) and DC to DC converter-based methods have become obsolete, as they provide low power quality indices which hamper the supply by introducing current harmonics and conduction losses. Although there are many developments in motors and control strategies, the risk and complexity of such drives become bottlenecks in implementation. This study implemented a drive scheme with a brushless DC Motor. The new improved bridgeless topology was modified with an advanced fuzzy logic controller to further improve its power quality and performance. Due to low power, a high-speed application of Brush Less (BLDC) motor was selected for the drive scheme. This combination could achieve almost Unity Power Factor (UPF) and significantly improve control compared to conventional topologies. A circuit-wise analysis was conducted to design the converter's components. The modifications were elaborated through mathematical expressions, and the parameters of power quality were analyzed and validated.
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Guo, Xiaorui, Qian Xun, Zuxin Li i Shuxin Du. "Silicon Carbide Converters and MEMS Devices for High-temperature Power Electronics: A Critical Review". Micromachines 10, nr 6 (19.06.2019): 406. http://dx.doi.org/10.3390/mi10060406.
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The significant advance of power electronics in today’s market is calling for high-performance power conversion systems and MEMS devices that can operate reliably in harsh environments, such as high working temperature. Silicon-carbide (SiC) power electronic devices are featured by the high junction temperature, low power losses, and excellent thermal stability, and thus are attractive to converters and MEMS devices applied in a high-temperature environment. This paper conducts an overview of high-temperature power electronics, with a focus on high-temperature converters and MEMS devices. The critical components, namely SiC power devices and modules, gate drives, and passive components, are introduced and comparatively analyzed regarding composition material, physical structure, and packaging technology. Then, the research and development directions of SiC-based high-temperature converters in the fields of motor drives, rectifier units, DC–DC converters are discussed, as well as MEMS devices. Finally, the existing technical challenges facing high-temperature power electronics are identified, including gate drives, current measurement, parameters matching between each component, and packaging technology.
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Rodrigues, Eduardo M. G., Radu Godina i Edris Pouresmaeil. "Industrial Applications of Power Electronics". Electronics 9, nr 9 (19.09.2020): 1534. http://dx.doi.org/10.3390/electronics9091534.
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Electronic applications use a wide variety of materials, knowledge, and devices, which pave the road to creative design, development, and the creation of countless electronic circuits with the purpose of incorporating them in electronic products. Therefore, power electronics have been fully introduced in industry, in applications such as power supplies, converters, inverters, battery chargers, temperature control, variable speed motors, by studying the effects and the adaptation of electronic power systems to industrial processes. Recently, the role of power electronics has been gaining special significance regarding energy conservation and environmental control. The reality is that the demand for electrical energy grows in a directly proportional manner with the improvement in quality of life. Consequently, the design, development, and optimization of power electronics and controller devices are essential to face forthcoming challenges. In this Special Issue, 19 selected and peer-reviewed papers discussing a wide range of topics contribute to addressing a wide variety of themes, such as motor drives, AC-DC and DC-DC converters, electromagnetic compatibility and multilevel converters.
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Castellanos, Juan. "Integrated Hybrid Switched Converters: A Review". Journal of Integrated Circuits and Systems 17, nr 1 (30.04.2022): 1–12. http://dx.doi.org/10.29292/jics.v17i1.570.
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The requirements of portable devices and other applications for a compact and efficient power converter drives the integration of power converters. However, conventional switched-inductor and switched-capacitor converters struggle with these requirements in integrated circuit dimensions. This paper introduces the state-of-the-art of a growing trend in integrated power converters, called hybrid switched converters. Here, the issues of conventional topologies are introduced, as well as the improvements addressed by hybrid converters, in terms of power efficiency, power density and voltage conversion ratio. Also, the characteristics of the four main trends in fully and highly integrated hybrid switched converters topologies are discussed. Finally, their state-of-the-art metrics are presented and compared to the metrics of conventional integrated switched converters.
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Baharom, Rahimi, Nor Farahaida Abdul Rahman, Muhamad Nabil Hidayat, Khairul Safuan Muhammad, Mohammad Nawawi Seroji i Nor Zaihar Yahaya. "A new gate drive for a single-phase matrix converter". International Journal of Power Electronics and Drive Systems (IJPEDS) 11, nr 2 (1.06.2020): 823. http://dx.doi.org/10.11591/ijpeds.v11.i2.pp823-826.
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This paper presents the new generation of advanced gate driver circuit based on IR2110 device for a Single-Phase Matrix Converter (SPMC) circuit topology that uses MOSFETs or IGBTs switches. The new generation of gate drive circuit uses less number of components, since a single IR2110 device can drive two power switches, thus reduce power losses and minimize the complexity of conventional circuit. An additional isolation of the upper and lower sides of IR2110 device features additional protection to the proposed gate drive system. As a result, the proposed gate drive circuit just uses four IR2110 gate drives in order to control eight switches of SPMC circuit, thus, solve the conventional bulky gate drive circuit problem in SPMCs operation. This is in line with the international power electronic technology road-maps to reduce losses, cost, volume, therefore to raise up the power density of power electronics converters. Validation have been done through the experimental test-rig. As a result, such new theoretical enhancements can be used as a novel foundation of future high power density of SPMC circuit topology and in-line with the Fourth Industrial Revolution (IR 4.0) which were characterized mainly by advances in technology
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Musumeci, Salvatore, Fausto Stella, Fabio Mandrile, Eric Armando i Antonino Fratta. "Soft-Switching Full-Bridge Topology with AC Distribution Solution in Power Converters’ Auxiliary Power Supplies". Electronics 11, nr 6 (11.03.2022): 884. http://dx.doi.org/10.3390/electronics11060884.
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The auxiliary power supply in a power converter is a key topic in the optimization of the converter’s low-voltage electronic circuit performance. In this article, a low-voltage DC-AC soft-switching full-bridge topology, with an innovative, driven technique to achieve a zero-voltage transition, is presented and discussed. The full-bridge converter drives a high-frequency transformer (called the main transformer) that on the secondary side, distributes an AC voltage and current to the several electronic circuit’s supplies. Every power supply is composed of an HF transformer (called load transformer) that converts the AC secondary voltage of the main transformer to the voltage and current levels requested by the electronic circuit. In this paper, the operating conditions are first investigated by several simulation results. Furthermore, an actual DC-DC power converter is used as a workbench for an experimental investigation of the effectiveness of the proposed auxiliary DC-AC soft-switching topology, and the AC distribution approach, to realize the several points of load power supply requested. Finally, the advantages and drawbacks of this auxiliary power supply solution are critically discussed, providing guidelines for the power converter designer.
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Anusha, P., i B. V. Rajanna. "Induction drive system with DSTATCOM based asymmetric twin converter". International Journal of Power Electronics and Drive Systems (IJPEDS) 11, nr 4 (1.12.2020): 1826. http://dx.doi.org/10.11591/ijpeds.v11.i4.pp1826-1834.
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High power demands are usually met by advanced power electronics converters in several large utility and electric drives applications. Applications from high power drives commonly uses solution based multi pulse and multilevel converters. A common DC link with atleast one voltage source converter (VSC) working with almost fundamental switching frequency are used in converters of multipulse type, and each output module is connected with the multipulse transformer in series. When compared to that of solution with single-VSC, Several VSCs generating different triggering pulses are adjused in order to achieve current injected with low specified total harmonic distortion (THD) with losses of abridged switching. Huge structure in complexity and expensive cost expenditure of the multipulse transformer is the major limitation of this scheme. DC link split capacitors in addition are eliminated by modifying the topology of the circuit. Thus, the independent voltages of the DC capacitor are controlled and decreased in number and the flow of third harmonic current component in the transformer is eliminated. The scheme of the designed controller is depending on the derived mathematical system model. Simulaion observation is used to check the scheme performance and efficiency in a detailed way with drive control technique.
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Bruha, Martin, Kai Pietiläinen i Axel Rauber. "High Speed Electrical Drives – Perspective of VFD Manufacturer". E3S Web of Conferences 178 (2020): 01006. http://dx.doi.org/10.1051/e3sconf/202017801006.
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This paper deals with high-speed electrical drives utilizing power electronic converters (commonly abbreviated as ASD, VFD or VSD). Existing solutions vary mainly on the motor side while the power electronic converter is very similar for all cases. Various advantages as well as technical challenges are discussed and illustrated. At certain stages comparisons between conventional and high-speed drives are made. The paper summarizes the experience of a VFD manufacturer based on state of the art technology in medium voltage and multi-megawatt power range. The authors believe that main complexity around high-speed drives is the motor design while the VFD requires only small adaptations or can sometimes be used directly without any modifications of standard design. The technology readiness is evaluated to be on a medium to high level.
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Barrero, Federico, i Jorge Rodas. "Control of Power Electronics Converters and Electric Motor Drives". Energies 14, nr 15 (29.07.2021): 4591. http://dx.doi.org/10.3390/en14154591.
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With the increased emphasis on climate change and reducing harmful emissions in the atmosphere, interest in power electronics converters and electric motor drives has led to significant new developments in areas such as renewable energy systems or electric propulsion [...]
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Alam, Mahetab, Shahbaz Ahmad, M. Anas Anees, Mohd Tariq i Abdul Azeem. "Comprehensive Review on Model Predictive Control Applied to Power Electronics". Recent Advances in Electrical & Electronic Engineering (Formerly Recent Patents on Electrical & Electronic Engineering) 13, nr 5 (22.09.2020): 632–40. http://dx.doi.org/10.2174/2352096512666191004125220.
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Model Predictive Control (MPC) in the field of power electronics has recently gained a lot of interest in the research community. Even though the computations are very complex in MPC algorithm, the availability of powerful processors has helped this approach to acquire a notable place in the area of control. They can take into account the nonlinearities and constraints very precisely. Having these advantages, they are found to be very attractive for controlling power converters and drives. This paper presents the review of growth and applications of MPC applied to power converters and drives. Some of the key elements like prediction model and its discretization, cost function, weighing factor and optimization algorithm are highlighted in this paper.
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Oleschuk, Valentin. "Methods and techniques of synchronous multi-zone modulation for the control of power electronic converters". Akademos, nr 4(63) (marzec 2022): 37–47. http://dx.doi.org/10.52673/18570461.21.4-63.04.
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This paper presents a short survey of the results of elaboration and investigation of novel methods, schemes, and algorithms of synchronous multi-zone space-vector modulation of signals in power electronic converters of electrical energy parameters, focused on improvement of operation efficiency of converter-based transport-oriented electric drives and of photovoltaic power conversion systems, which were published mainly in the two-year period 2019–2020. These methods and algorithms of synchronous pulse-width modulation (PWM) allow providing continuous synchronization and symmetries of waveforms of the converters output voltage, with minimization of undesirable sub-harmonics in spectra of voltage and current, and also with minimization of undesirable common-mode voltage in electric transport systems and in photovoltaic systems, which leads to corresponding loss reduction and efficiency increasing of these systems.
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Hamanah, W. M., A. Salem, M. A. Abido, T. G. Habetler i A. M. Qwbaiba. "Dual-Axis Tracking Electrical Drives for Solar Power Tower". Renewable Energy and Power Quality Journal 19 (wrzesień 2021): 435–40. http://dx.doi.org/10.24084/repqj19.312.
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The solar power tower (SPT) is an effective thermal renewable energy source aiming to absorb direct sunbeams on a central collector using thousands of electrical drive-based moved reflectors. The reflector tracking system's accuracy depends on the utilized drive system effectiveness and the used control technique robustness. In this paper, the different electric drives system used in SPT trackers, including motors and power electronic converters, are presented and discussed. Besides, this paper highlighted the advantages and drawbacks of each drive system. Additionally, a dualaxis tracking technique employing the azimuth-elevation tracking approach is discussed and derived for a dual linear actuator heliostat. Moreover, an SPT heliostat prototype using a DC drive system, designed and implemented locally, is discussed and analyzed. The experimental results show the effectiveness of the proposed platform.
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Praženica, Michal, Patrik Resutík i Slavomír Kaščák. "Practical Implementation of the Indirect Control to the Direct 3 × 5 Matrix Converter Using DSP and Low-Cost FPGA". Sensors 23, nr 7 (29.03.2023): 3581. http://dx.doi.org/10.3390/s23073581.
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The popularity of multiphase drives is increasing due to the growing interest in drives with more than three phases. One promising topology is the multiphase matrix converters, which enable the implementation of a single-stage AC/AC power conversion system with bidirectional power flow capability. In this paper, we present the implementation of indirect control for a practical sample of the direct matrix converter. To reduce the overall cost of the control solution for these types of converters, we utilized low-cost FPGA and DSP. The usage of only DSP itself was not possible due to low number of available PWM output needed for 3 × 5 MxC driving. Another reason is commutation, which must be precise and fast to avoid any hazardous states in the converter. Due to these problems, the authors decided to implement an algorithm of a combination of DSP and FPGA, where FPGA is used for time critical operations. The indirect algorithm treats the converter as two separate parts, the rectifier and the inverter, with the DC-LINK being fictitious. The matrix converter is composed of compact modules, and the entire system is verified. The practical verification demonstrates that matrix converters can produce a wide range of output frequencies and achieve input power factor control. Finally, we compare and review the practical model with the simulation model, examining efficiency and other parameters.
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Pires, Vitor Fernão, Armando José Pires, Armando Cordeiro i Daniel Foito. "A Review of the Power Converter Interfaces for Switched Reluctance Machines". Energies 13, nr 13 (6.07.2020): 3490. http://dx.doi.org/10.3390/en13133490.
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The use of power electronic converters is essential for the operation of Switched Reluctance Machines (SRMs). Many topologies and structures have been developed over the last years considering several specific applications for this kind of machine, improving the control strategies, performance range, fault-tolerant operation, among other aspects. Thus, due to the great importance of power electronic converters in such applications, this paper is focused on a detailed review of main structures and topologies for SRM drives. The proposed study is not limited to the classic two-level power converters topologies dedicated to the SRMs; it also presents a review about recent approaches, such as multilevel topologies and based on impedance source network. Moreover, this review is also focused on a new class of topologies associated to these machines, namely the ones with fault-tolerant capability. This new category of topologies has been a topic of research in recent years, being currently considered an area of great interest for future research work. An analysis, taking into consideration the main features of each structure and topology, was addressed in this review. A classification and comparison of the several structures and topologies for each kind of converter, considering modularity, boost capability, number of necessary switches and phases, integration in the machine design, control complexity, available voltage levels and fault-tolerant capability to different failure modes, is also presented. In this way, this review also includes a description of the presented solutions taking into consideration the reliability of the SRM drive.
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Wunsch, Bernhard, Stanislav Skibin, Ville Forsström i Ivica Stevanovic. "EMC Component Modeling and System-Level Simulations of Power Converters: AC Motor Drives". Energies 14, nr 6 (12.03.2021): 1568. http://dx.doi.org/10.3390/en14061568.
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EMC simulations are an indispensable tool to analyze EMC noise propagation in power converters and to assess the best filtering options. In this paper, we first show how to set up EMC simulations of power converters and then we demonstrate their use on the example of an industrial AC motor drive. Broadband models of key power converter components are reviewed and combined into a circuit model of the complete power converter setup enabling detailed EMC analysis. The approach is demonstrated by analyzing the conducted noise emissions of a 75 kW power converter driving a 45 kW motor. Based on the simulations, the critical impedances, the dominant noise propagation, and the most efficient filter component and location within the system are identified. For the analyzed system, maxima of EMC noise are caused by resonances of the long motor cable and can be accurately predicted as functions of type, length, and layout of the motor cable. The common-mode noise at the LISN is shown to have a dominant contribution caused by magnetic coupling between the noisy motor side and the AC input side of the drive. All the predictions are validated by measurements and highlight the benefit of simulation-based EMC analysis and filter design.
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El Aroudi, Abdelali, Luis Benadero, Reham Haroun, Luis Martínez-Salamero i Chi K. Tse. "Bifurcation Phenomena in Open-Loop DCM-Operated DC–DC Switching Converters Feeding Constant Power Loads". Electronics 12, nr 4 (19.02.2023): 1030. http://dx.doi.org/10.3390/electronics12041030.
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Constant power loading is an effect that appears in multiple-stage energy conversion systems with individually regulated switching power converters. In a two-stage system, an upstream or source converter drives one or more downstream or load converters. The downstream converters in a two-stage power conversion system are designed to provide the fastest transient response in stand-alone operation. Consequently, they behave as a constant power load (CPL) to the upstream converter within their control bandwidth. In the past, open-loop power converters feeding CPLs and operating in discontinuous conduction mode (DCM) were considered to be stable. In this paper, it is shown that these systems can undergo instabilities, which have been so far overlooked. First, numerical simulations from the switched model of an open-loop boost converter under DCM operation and loaded with a tightly regulated buck converter and the same converter loaded by an ideal CPL are presented to show that they exhibit similar nonlinear behavior and bifurcation phenomena. Then, the three elementary open-loop DC–DC converters operating in the DCM were considered and their bifurcation phenomena were revealed. It is shown that the period-doubling route to chaos in the DC–DC boost converter is interrupted by a sudden appearance of dangerous destructive dynamics due to the excessively unlimited load current in the CPL. For the buck converter, only the first period-doubling bifurcation is observed before the destructive behavior appears. The open-loop buck–boost converter under DCM and feeding a CPL is always unstable and exhibits no periodic orbit. Based on the observed phenomena, approximate discrete-time models were derived, which despite their simplicity, were seen to display the most-important and -essential features of the corresponding switching converters before destructive dynamics occurs.
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Mlodzikowski, Pawel, Adam Milczarek i Mariusz Malinowski. "Application of Simplified Neutral Point Clamped Multilevel Converter in a Small Wind Turbine". Electrical, Control and Communication Engineering 5, nr 1 (1.05.2014): 5–10. http://dx.doi.org/10.2478/ecce-2014-0001.
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Abstract In low power distributed generation systems low cost together with the energy quality requirements are a key element. It is known that quality of voltage waveforms generated from multilevel converters is better in comparison with those from two-level. Due to advancements in power electronics and microcontrollers, multilevel converters are being built with the use of integrated power modules thus this type of converters are getting more compact in size. This paper investigates performance of a derivation from the most popular multilevel topology - a neutral point clamped converter (NPC). Applying the idea for simplifying the topology by reducing the number of switches (what came from drives) this NPC converter is capable of bidirectional AC/DC/AC operation. For the AC/DC part two schemes are tested: Direct Torque Control Space Vector Modulated and Field Oriented Control but for the DC/AC part a control scheme utilizing the proportional-resonant controller was chosen. Laboratory setup was based on a permanent magnet synchronous generator with control and acquisition completed with the help of dSpace 1005 control box. Experimental verification shows that system operates properly.
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Grbo, Zeljko, Slobodan Vukosavic i Emil Levi. "A novel power inverter for switched reluctance motor drives". Facta universitatis - series: Electronics and Energetics 18, nr 3 (2005): 453–65. http://dx.doi.org/10.2298/fuee0503453g.
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Although apparently simpler, the SRM drives are nowadays more expensive than their conventional AC drive counterparts. This is to a great extent caused by the lack of a standardised power electronic converter for SRM drives, which would be available on the market as a single module. A number of attempts were therefore made in recent times to develop novel power electronic converter structures for SRM drives, based on the utilization of a three-phase voltage source inverter (VSI), which is readily available as a single module. This paper follows this line of thought and presents a novel power electronic converter topology for SRM drives, which is entirely based on utilization of standard inverter legs. One of its most important feature is that both magnetizing and demagnetizing voltage may reach the DC-bus voltage level while being contemporarily applied during the conduction overlap in the SRM adjacent phases. At the same time, the voltage stress across the power switches equals the DC-bus voltage. The topology is functional in all operating regimes of the drive. Principle of operation is explained in detail for a three-phase SRM drive and experimental results obtained with a 6/4 switched reluctance motor, are included. Four inverter legs are required in this case. Some considerations, justifying the proposed converter topology from the point of view of the cost, are included.
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V Swathi, G., N. Paparao i D. Swathi. "Design an Efficient Power Electronics Transformer (PET) for the Improvement of Quality in Power". International Journal of Engineering & Technology 7, nr 3.12 (20.07.2018): 1046. http://dx.doi.org/10.14419/ijet.v7i3.12.17629.
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This paper consists of a new device called as Power Electronics transformer (PET) which has been recommended in paper so that it understands that voltage transformation, galvanic isolation, and enhancing force personal satisfaction for a just gadget. The PET gives a complete methodology for designing a transformer that uses Power electronic frameworks which comprises for primary coil and auxiliary coils of a transformer. A couple features to example, such-and fast voltage regulation, voltage list recompense what's more likewise revision for control figure could a chance to be united under PET. This paper indicates another thought of plotting An vitality electronic transformer. In the schema process, those AC/DC, DC/AC, AC/AC converters In addition secondary back transformers have been utilized. Grid converter similarly meets desires Likewise AC/AC converter on force electronic transformer. Those proposed drive electronic transformer performs perplexedly capacities to example, amendment regarding energy. Factors, elimination of swell and voltage sag, reduction of voltage flicker and fault situation protection capabilities. The recommended force electronic transformer need been shown using MATLAB/ SIMULINK Furthermore also change Previously, force characteristic with recommended perfect gas need been checked by the simulink outcomes.
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Saponara, Sergio, i Lucian Mihet-Popa. "Energy Storage Systems and Power Conversion Electronics for E-Transportation and Smart Grid". Energies 12, nr 4 (19.02.2019): 663. http://dx.doi.org/10.3390/en12040663.
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The special issue “Energy Storage Systems and Power Conversion Electronics for E-Transportation and Smart Grid” on MDPI Energies presents 20 accepted papers, with authors from North and South America, Asia, Europe and Africa, related to the emerging trends in energy storage and power conversion electronic circuits and systems, with a specific focus on transportation electrification and on the evolution of the electric grid to a smart grid. An extensive exploitation of renewable energy sources is foreseen for smart grid as well as a close integration with the energy storage and recharging systems of the electrified transportation era. Innovations at both algorithmic and hardware (i.e., power converters, electric drives, electronic control units (ECU), energy storage modules and charging stations) levels are proposed.
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Hoffmann, Stefan, Matthias Bock i Eckart Hoene. "A New Filter Concept for High Pulse-Frequency 3-Phase AFE Motor Drives". Energies 14, nr 10 (13.05.2021): 2814. http://dx.doi.org/10.3390/en14102814.
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The size of back-to-back converters with active front end is significantly determined by the size of the passive filter components. This paper presents a new complete EMC filter concept for this type of converter system that is effective on the input and the output. This involves filtering the main common mode interferences from the grid and motor sides with a single CM choke. Since only the difference of the generated common mode voltage-time areas of both converters is absorbed by this component, the size of the required filter can be greatly reduced compared to conventional filter concepts. The concept is validated on a grid feeding inverter that can be connected to the public distribution network with an output power of 63 kW. The size reduction is demonstrated by means of a design example on a system with the same power and electrical requirements. It is elaborated why, applying the new filter concept, the impedance of the DC link potentials to ground and other electrical potentials should be as high as possible and therefore associated parasitic capacitances should be minimized. From this requirement, rules for the design of the power modules of PFC and motor converters for the application of this filter concept are derived.
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Kozak, Maciej, Artur Bejger i Arkadiusz Tomczak. "Identification of Gate Turn-Off Thyristor Switching Patterns Using Acoustic Emission Sensors". Sensors 21, nr 1 (24.12.2020): 70. http://dx.doi.org/10.3390/s21010070.
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Modern seagoing ships are often equipped with converters which utilize semiconductor power electronics devices like thyristors or power transistors. Most of them are used in driving applications such as powerful main propulsion plants, auxiliary podded drives and thrusters. When it comes to main propulsion drives the power gets seriously high, thus the need for use of medium voltage power electronics devices arises. As it turns out, power electronic parts are the most susceptible to faults or failures in the whole electric drive system. These devices require efficient cooling, so manufacturers design housings in a way that best dissipates heat from the inside of the chips to the metal housing. This results in susceptibility to damage due to the heterogeneity of combined materials and the difference in temperature expansion of elements inside the power device. Currently used methods of prediction of damage and wear of semiconductor elements are limited to measurements of electrical quantities generated by devices during operation and not quite effective in case of early-stage damage to semiconductor layers. The article presents an introduction and preliminary tests of a method utilizing an acoustic emission sensor which can be used in detecting early stage damages of the gate turn-off thyristor. Theoretical considerations and chosen experimental results of initial measurements of acoustic emission signals of the medium voltage gate turn-off thyristor are presented.
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Delatte, Pierre, V. Dessard, A. Saib, N. Pequignot, G. Picún, L. Demeûs, L. Martinez, T. Krebs i J. C. Doucet. "New High Temperature Electronic Components for Power Management and Motor Control Applications". Additional Conferences (Device Packaging, HiTEC, HiTEN, and CICMT) 2010, HITEC (1.01.2010): 000207–13. http://dx.doi.org/10.4071/hitec-pdelatte-wa21.
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This paper presenst CISSOID's new high temperature chips for Power Management and Motor Control in automotive, oil & gas, aerospace and industrial applications. High temperature DC-DC reference designs, called respectively ETNA, VESUVIO™ and EREBUS™, have been announced recently. These Buck (step-down) DC-DC converters are built with proven CISSOID products as active components rated from −55°C up to 225°C. These DC-DC converters can have input voltages from 6V up to 50V. The output voltage can be adjusted from 10% up to 90% of the input voltage. Power efficiencies in excess of 90% above 200°C have been demonstrated. VESUVIO™ and EREBUS™ are based on MAGMA PWM controller, HYPERION half-bridge driver and two power transistors to implement a synchronous Buck converter. For high voltage and power levels, new Silicon-Carbide devices allow operating at high junction temperatures. They enable high power modules with higher densities in terms of size and weight. Having power drivers able to operate very close to these devices allow further integration of power modules while increasing the performances thanks to lower parasitic capacitances and inductances. This will also ease to increase switching frequencies, another key advantage of these new devices. For these applications, CISSOID has released PROMETHEUS I Power Driver reference design that can sink and source currents up to 2Amps at a supply voltage from 11V up to 30V. Recently announced PROMETHEUS II design, based on HYPERION driver, enables rise and fall times of 25ns on a 1nF load.
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Sušin, Denis, Mitja Nemec, Vanja Ambrožič i David Nedeljković. "Limitations of Harmonics Control in Power Converters". Electronics 8, nr 7 (29.06.2019): 739. http://dx.doi.org/10.3390/electronics8070739.
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In this paper, we analyze the constraints of harmonics control in power electronic systems. Based on an equivalent circuit of a typical power converter application and its parameters, we have derived an analytical expression for calculating the maximal amplitude of controlled harmonic current. This expression has been successfully verified on an experimental setup, designed around a single-phase grid-connected bidirectional inverter. The pulse width modulated (PWM) driven inverter has been controlled by multiple resonant controllers, each of them providing individual control of a selected harmonic current. By using the derived expression and taking into account the parameters of converter application, power electronics designers could quickly determine the limitations of harmonics control.
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MATAKAS, LOURENCO, CATALIN BURLACU i EISUKE MASADA. "THE CONNECTION OF CONVERTERS INSTEAD OF SEMICONDUCTOR POWER DEVICES — A HIGH PERFORMANCE SOLUTION FOR THE MVA RANGE OF POWER COMVERTERS". Journal of Circuits, Systems and Computers 05, nr 03 (wrzesień 1995): 503–21. http://dx.doi.org/10.1142/s021812669500031x.
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Recently, there is an increased demand for high power, high performance converters for power system applications, motor drives, etc. The low switching frequency of the existing semiconductor power devices poses a severe limitation that can be overcome by the use of interconnected smaller power converters (multiconverter) with appropriate control. This paper gives an overview of the state of the art of multiconverters, followed by a comparison based on analytically calculated values of the spectra, RMS and peak values of their ripple currents, and the peak values of the transformer's flux. Special attention has been given to show that the transformerless parallel connection of converters is feasible and offers features such as simplicity, gracefully degrading operating, high reliability, easy expandability and easy maintenance.
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Mirajkar, Nilesh Balkrishna, Rajesh M. Dharaskar, Tousif G. Kazi, Rohit R. Burte i Rakesh R. Jadhav. "Harmonics: The Distortion in Supplied Waveform – Causes and Remedies". International Journal of Current Microbiology and Applied Sciences 12, nr 5 (10.05.2023): 39–44. http://dx.doi.org/10.20546/ijcmas.2023.1205.005.
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In Industrial Distribution Power System, the use of electronic devices such as motor drives, rectifiers or converters, power supplies and power electronic devices has been increased tremendously from last decade. In such a systems, switching operations are more in their regular work. It causes distortion in supplied waveform (Harmonics). This increases the Total Harmonic Distortion (THD) of Industrial Distribution Power System which is considered as the main reason for the power quality problems. This paper includes the sources of the harmonics, effects of the harmonics and the recommendations for correction of these problems of power quality resulting from harmonic distortion in the Industrial Distribution Power System.
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Majdoul, Radouane, Abelwahed Touati, Abderrahmane Ouchatti, Abderrahim Taouni i Elhassane Abdelmounim. "A nine-switch nine-level converter new topology with optimal modulation control". International Journal of Power Electronics and Drive Systems (IJPEDS) 12, nr 2 (1.06.2021): 932. http://dx.doi.org/10.11591/ijpeds.v12.i2.pp932-942.
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<span lang="EN-US">Multilevel power converters are becoming increasingly used in several sectors: energy, grid-tie renewable energy systems, High voltage direct current (HVDC) power transmission, and a multitude of industrial applications. However, the multilevel converters consist of several drives and a high number of power switches, which leads to a considerable cost and an increased size of the device. Thus, a novel topology of a multilevel bidirectional inverter using a reduced number of semiconductor power components is proposed in this paper. Without any diode clamped or flying capacitor, only nine switches are used to generate nine voltage levels in this new topology. The proposed multilevel converter is compared with the conventional structures in terms of cost, the number of active power switches, clamped diodes, flying capacitors, DC floating capacitors, and the number of DC voltage sources. This comparative analysis shows that the proposed topology is suitable for many applications. For optimum control of this multilevel voltage inverter and to reduce switching losses in power semiconductors, a hybrid modulation technique based on fundamental frequency modulation and multi-carrier-based sinusoidal pulse-width modulation schemes is performed. The effectiveness of the proposed multilevel power converter is verified by simulation results.</span>
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Zabihi, Nima, Asim Mumtaz, Tom Logan, Thilini Daranagama i Richard A. McMahon. "SiC Power Devices for Applications in Hybrid and Electric Vehicles". Materials Science Forum 963 (lipiec 2019): 869–72. http://dx.doi.org/10.4028/www.scientific.net/msf.963.869.
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Power electronic inverters and converters are an essential technology in the battery management and propulsion for Hybrid and Electric vehicles (HEVs). In order to improve competitiveness of HEVs there is a drive to improve the conversion efficiency of the power electronics. Using Silicon Carbide (SiC) power devices has been identified as a key enabler of future improvements in performance but it is essential to understand how these devices perform in an automotive context. Two similar half bridge circuits has been built using SiC MOSFETs, one with and the other without anti-parallel Schottky SiC diode. In this paper the power loss and efficiency of half-bridge has been compared as the dead-time is changed. Effect of changing dead-time on the converter are shown. The paper gives insight into these phenomena with additional experimental data supported by simulation. The implications for using SiC devices in both DC to DC and DC to AC converters are discussed.
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Vinay Kumar, C. H., G. Madhusudhana Rao, A. Raghu Ram i Y. Prasanna Kumar. "Designing of Neuro-Fuzzy Controllers for Brushless DC Motor Drives Operating with Multiswitch Three-Phase Topology". Journal of Electrical and Computer Engineering 2022 (20.07.2022): 1–12. http://dx.doi.org/10.1155/2022/7001448.
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Brushless DC motors are simple in construction, high efficiency, less noise, and high reliability, which are not replaceable motors in specific applications compared to other motor drives. It has a facility for its multivariable system, nonlinear control process, and powerful coupling system. This paper proposes to design the neuro-fuzzy controllers for its multiple converters switching to improve the power factor and minimize the BLDC motor switching losses. Compared with conventional controllers, this controller will develop the power factor and optimize the current ripples concerning time and torque. The working model of the BLDC motor may be presented here. A nonlinear load will be applied to the BLDC motor to determine the speed, current, and torque. The multiple switches designed with the proposed controllers are connected with the converter’s DC link to boost the voltage. The fuzzy logic controller is implanted to adjust the speed of the neural network and is also designed for the analysis of the stability of the system. The proposed controllers compare the rate at different speeds, torque, currents, and rotor angle positions. Finally, the proposed controller for multiple converter switches performs better than the conventional controllers.
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Klumpner, C., i F. Blaabjerg. "Using reverse-blocking IGBTs in power converters for adjustable-speed drives". IEEE Transactions on Industry Applications 42, nr 3 (maj 2006): 807–16. http://dx.doi.org/10.1109/tia.2006.872956.
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EGUCHI, KEI. "DESIGN OF A DUAL-INPUT SERIAL DC–DC CONVERTER REALIZING INDIVIDUAL SWITCHING MODES". Journal of Circuits, Systems and Computers 20, nr 06 (październik 2011): 1075–94. http://dx.doi.org/10.1142/s0218126611007773.
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To drive a white light-emitting diode (LED) in portable devices, a dual-input serial DC–DC converter realizing individual switching modes is proposed in this paper. Unlike conventional single-input converters, the proposed converter provides output voltage by converting not only battery energy but also solar energy. Therefore, the proposed converter can suppress energy consumption of a battery. Furthermore, in the proposed converter, the -1/m× stepped-down voltage (m = 1,2,…,N) is generated to drive LED's cathode only when the voltage of solar-cells is insufficient to drive 1 × transfer mode. In other words, when the voltage of solar-cells is sufficient to drive LEDs, the proposed converter is in standby mode. For this reason, the proposed converter can realize high power efficiency, because energy loss caused by the power conversion is suppressed. The properties of the proposed converter are clarified by theoretical analyses. Furthermore, SPICE simulations and experiments show the validity of circuit design, where theoretical results correspond well with SPICE simulated results. For this reason, derived theoretical formulas can provide basic information to design negative switched capacitors (SC) DC–DC converters. The proposed converter will be useful as a driver circuit of white LEDs for display backlighting.
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Green, S., D. J. Atkinson, B. C. Mecrow, A. G. Jack i B. Green. "Fault tolerant, variable frequency, unity power factor converters for safety critical PM drives". IEE Proceedings - Electric Power Applications 150, nr 6 (2003): 663. http://dx.doi.org/10.1049/ip-epa:20030911.
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POLYUSCHENKOV, I. S. "Application of model-based programming for transistor power converters of electric drives control". Elektrotekhnika, nr 1 (2023): 27–34. http://dx.doi.org/10.53891/00135860_2023_01_27.
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Kazmierkowski, Marian P. "Model Predictive Control of High Power Converters and Industrial Drives [Book News]". IEEE Industrial Electronics Magazine 12, nr 3 (wrzesień 2018): 55–56. http://dx.doi.org/10.1109/mie.2018.2856543.
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Sarala, P., S. F. Kodad i B. Sarvesh. "Power Factor Correction with Current Controlled Buck Converter for BLDC Motor Drive". International Journal of Power Electronics and Drive Systems (IJPEDS) 8, nr 2 (1.06.2017): 730. http://dx.doi.org/10.11591/ijpeds.v8.i2.pp730-738.
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Brushless DC motor is a synchronous machine that makes use of electronic commutation instead of mechanical commutator. Brushless DC motors makes use of inverter encompassing static switches for its operation. A simple bridge converter when used for BLDC drive as front end converter makes input source power factor to get reduced which is unacceptable in the power system. To avoid the distortions in the source voltage and source currents, Buck converter which was used as power factor correction (PFC) converter in this paper to improve the power factor. Presence of power electronic converters deteriorates system power factor effecting overall system performance. This paper presents buck converter for power factor correction in brushless DC motor drive system. Buck converter is operated with current control strategy rather to conventional voltage follower control. Simulation model was obtained using MATLAB/SIMULINK software and the brushless DC motor performance characteristics were shown for conditions with different DC link voltages and step variation in DC link voltage. Total harmonic distortion in source current was also presented.
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Shah, Engr Baqir Ali, Mazhar Hussain Baloch, Dr Amir Mehmood Soomro, Engr Shafqat Hussain Memon i Dr Dur Muhammad Soomro. "Analysis of Harmonic Distortion Reduction through Modular Multi-Level Inverter using Nearest Level Modulation (NLM) Control Strategy". Sukkur IBA Journal of Emerging Technologies 4, nr 1 (18.06.2021): 67–79. http://dx.doi.org/10.30537/sjet.v4i1.858.
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The research paper presents the control strategy to reduce THD (Total Harmonic Distortions) losses by the implementation of the Nearest Level Modulation control technique in a Modular Multilevel Converter. Modular Multilevel Converter is found one of the leading technologies in Power Electronics & Control, its applications are very common in HVDC systems, FACTS (Flexible Alternating-current Transmission system), Variable frequency drives and Electric vehicles as well. The power quality of MMC is better and has lesser THD in comparison to conventional converters like 2-level converters with carrier-based modulation techniques. The MMC has been designed with high scalability and has high voltage and power capacity. Sub-module is an integral part of MMC which is built up as an identical and controllable part of it. This converter is also called a controllable voltage source (VSC). Researchers aim to come up with a detailed review of control methods and necessary operations applied to MMC-based systems for HVDC, particularly focusing to control the total harmonic distortions. Power converters use many modulation techniques, but the existing techniques contribute to a great part in switching losses. MMC up to 49 levels, by implementing the Nearest Level Modulation (NLM) technique, is robust and has less complexity for the systems like MMC-HVDC, and the levels control the total harmonic distortions. In this research paper, the reduction of THD by increasing the voltage levels in MMC is comprehensively evaluated. The simulation results in MATLAB/Simulink are used to examine and confirm the proposed control strategy for stable operation of MMC for HVDC application.
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Skarolek, Pavel, Ondrej Lipcak i Jiri Lettl. "Current Collapse Conduction Losses Minimization in GaN Based PMSM Drive". Electronics 11, nr 9 (7.05.2022): 1503. http://dx.doi.org/10.3390/electronics11091503.
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The ever-increasing demands on the efficiency and power density of power electronics converters lead to the replacement of traditional silicon-based components with new structures. One of the promising technologies represents devices based on Gallium-Nitride (GaN). Compared to silicon transistors, GaN semiconductor switches offer superior performance in high-frequency converters, since their fast switching process significantly decreases the switching losses. However, when used in hard-switched converters such as voltage-source inverters (VSI) for motor control applications, GaN transistors increase the power dissipated due to the current conduction. The loss increase is caused by the current-collapse phenomenon, which increases the dynamic drain-source resistance of the device shortly after the turn-on. This disadvantage makes it hard for GaN converters to compete with other technologies in electric drives. Therefore, this paper offers a purely software-based solution to mitigate the negative consequences of the current-collapse phenomenon. The proposed method is based on the minimum pulse length optimization of the classical 7-segment space-vector modulation (SVM) and is verified within a field-oriented control (FOC) of a three-phase permanent magnet synchronous motor (PMSM) supplied by a two-level GaN VSI. The compensation in the control algorithm utilizes an offline measured look-up table dependent on the machine input power.
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Zhang, Yuzhe, Zhenbin Zhang, Oluleke Babayomi i Zhen Li. "Weighting Factor Design Techniques for Predictive Control of Power Electronics and Motor Drives". Symmetry 15, nr 6 (7.06.2023): 1219. http://dx.doi.org/10.3390/sym15061219.
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The rapid growth of energy demand requires progressive energy generation. This, together with the demand for higher efficiency and flexibility, has promoted the application of power electronics in energy systems. During the past decade, model predictive control (MPC) of power electronics has witnessed significant advancements in both dynamic performance and optimal control of the multi-objective terms. Several of these terms can have equal control priorities, resulting in a symmetrical cost function; however, most objectives have different priorities and require weighting factors to resolve the asymmetry in the cost function. Currently, researchers continue to encounter challenges in the optimal design of weighting factors. Moreover, the relative performance of different techniques that either utilize or avoid the weighting factor are uncertain. Therefore, this study focuses on weighting factor design techniques in the literature as applied to wind/solar energy conversion, microgrids, grid-connected converters, and other high-performance converter-based systems. These are grouped under the heuristic, offline tuning, sequential, and online optimization methods. This study demonstrates that optimal online tuning of weighting factors and sequential MPC methods can both offer improved robustness against parameter uncertainties. In addition, the advantages and limitations of different techniques are highlighted.
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Sayed, Khairy, Abdulaziz Almutairi, Naif Albagami, Omar Alrumayh, Ahmed G. Abo-Khalil i Hedra Saleeb. "A Review of DC-AC Converters for Electric Vehicle Applications". Energies 15, nr 3 (8.02.2022): 1241. http://dx.doi.org/10.3390/en15031241.
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This paper comprehensively reviews the current status of multidisciplinary technologies in electric vehicles. Because the electric vehicle market will expand dramatically in the coming few years, research accomplishments in power electronics technology for electric vehicles will be highly attractive. Challenges in power electronics technology for driving electric vehicles, charging batteries, and circuit topologies are being explored. This paper aims primarily to address the practical issues of the future electric vehicles and help researchers obtain an overview of the latest techniques in electric vehicles, focusing on power electronics-based solutions for both current and future electric vehicle technologies. In this work, different medium-and high-voltage DC-AC inverter topologies are investigated and compared in terms of power losses and component requirements. Recent research on electric vehicle power converters is also discussed, with highlighting on soft-switching and multilevel inverters for electric vehicle motor drives. In this paper, a methodical overview and general classification of DC-AC power converters are presented. In specific topologies, drawbacks such as voltage stresses on active switches and control complications may occur, which can make them difficult for immediate commercialization. However, various modified circuit topologies have been recommended to overcome these drawbacks and enhance the system performance.
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Jagieła, Mariusz, i Tomasz Garbiec. "Coupling electromagnetic (FE) models to multidomain simulator to analyse eletrical drives and complex control systems". Archives of Electrical Engineering 59, nr 3-4 (1.12.2010): 189–201. http://dx.doi.org/10.2478/s10171-010-0015-y.
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Coupling electromagnetic (FE) models to multidomain simulator to analyse eletrical drives and complex control systemsThis work presents the co-simulation approach to the analysis of control systems containing detailed models of electromagnetic and electromechanical converters. In this method of analysis the attention is paid to the whole system and not only to its electromagnetic part. The latter is described by equations resulted from the two-dimensional finite element discretisation of the Maxwell equations, and is coupled weakly with the remaining part of the system. The simulation is carried out in Matlab/Simulink environment wherein the coupling is realised through the S-function. Example results regarding simulation of the operation of the control system of an electrical machine and the operation of a power electronic converter are presented and compared with available reference data.
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Cheng, Hung-Liang, Lain-Chyr Hwang, Heidi H. Chang, Qi-You Wang i Chun-An Cheng. "High-Efficiency Flicker-Free LED Driver with Soft-Switching Feature". Micromachines 13, nr 5 (20.05.2022): 797. http://dx.doi.org/10.3390/mi13050797.
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A novel interleaved DC-DC buck converter is proposed to drive high-brightness light-emitting diodes (LEDs). The circuit configuration mainly consists of two buck converters, which are connected in parallel and use interleaved operation. Through interleaved operation, the power capability of the converter is doubled. Traditionally, two individual inductors are used in the two buck converters. The difference between conventional parallel-operated buck converters using two energy storage inductors and the proposed circuit is that the proposed circuit uses two small inductors and a coupled inductor that replace the two inductors of the buck converters. In this way, both buck converters can be designed to operate in discontinuous-current mode (DCM), even if the magnetizing inductance of the coupled inductor is large. Therefore, the freewheeling diodes can achieve zero-current switching off (ZCS). Applying the principle of conservation of magnetic flux, the magnetizing current is converted between the two windings of the coupled inductor. Because nearly constant magnetizing current continuously flows into the output, the output voltage ripple can be effectively reduced without the use of large-value electrolytic capacitors. In addition, each winding current can drop from positive to negative, and this reverse current can discharge the parasitic capacitor of the active switch to zero volts. In this way, the active switches can operate at zero-voltage switching on (ZVS), leading to low switching losses. A 180 W prototype LED driver was built and tested. Our experimental results show satisfactory performance.
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Eya, Candidus U., Ayodeji Olalekan Salau, Sepiribo Lucky Braide, S. B. Goyal, Victor Adewale Owoeye i Oluwafunso Oluwole Osaloni. "Assessment of Total Harmonic Distortion in Buck-Boost DC-AC Converters using Triangular Wave and Saw-Tooth based Unipolar Modulation Schemes". WSEAS TRANSACTIONS ON POWER SYSTEMS 17 (8.11.2022): 324–38. http://dx.doi.org/10.37394/232016.2022.17.33.
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This paper presents an assessment of the levels of total harmonic distortion (THD) in buck-boost DC-AC converters using triangular wave and saw-tooth unipolar based-modulation schemes. This paper seeks to identify a better technique for mitigating the total harmonic distortion on buck-boost DC-AC converters under unipolar carrier-based modulation schemes. This was achieved by subjecting the buck-boost DC-AC converter under triangular wave-based and saw-tooth based-unipolar modulation schemes. The voltage and current output of the buck- boost DC-AC converter under each scheme was analysed using a power GUI Fast Fourier Transform (FFT) analytical tool resident in the MATLAB Simulink environment unlike with the conventional scheme of computing the percentage of THD. The test system was obtained by a combination of DC-DC buck-boost converter, H-bridge based-insulated unipolar gate transistors, and a logic control unit. It was realized that THD of 0.2865%, peak output voltage of 294.1V and current of 9.805A were obtained by using the saw-tooth based-unipolar modulation scheme, whereas a THD of 0.1479%, peak output voltage of 297.4V and current of 9.53A were obtained by using the triangular wave based-bipolar modulation scheme on the same Buck-boost DC-AC converter circuit. The results imply a high power factor utilization and low power loss in the triangular wave based-unipolar modulation scheme compared to the saw-tooth based-unipolar modulation technique for improving the performance characteristics of the buck-boost converter system. This study showed that power drives and heavy load machines based-power electrical loads are required to use the saw-tooth based-unipolar modulation (STBUM) scheme for high current and low THD%, whereas sensitive power electrical loads such as hospital equipment and communication industries based-power electronic devices are required to use the triangular wave-based unipolar modulation (TWBUM) scheme due to low current and THD%.
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Warrier, Preeti, i Pritesh Shah. "Fractional Order Control of Power Electronic Converters in Industrial Drives and Renewable Energy Systems: A Review". IEEE Access 9 (2021): 58982–9009. http://dx.doi.org/10.1109/access.2021.3073033.
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Uma Maheswari, S., i K. V. Kandasamy. "Development of Zeta Converter for Permanent Magnet Brushless Direct Current Motor". Applied Mechanics and Materials 573 (czerwiec 2014): 102–7. http://dx.doi.org/10.4028/www.scientific.net/amm.573.102.
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Converter plays a vital role in modern transferable electronic devices and systems. In the battery operated transferable devices, the battery supplies an input voltage to the converter which in turn converts into the desired voltage. Buck-boost, Cuk, SEPIC and Zeta converter are meeting the operational requirements of DC-DC converters. The DC-DC converters are used in both buck function as well as boost function. But the advantage of Zeta converter is that, it does not suffer the polarity reversal problem. The aim of the proposed work is to design a Zeta converter which can be used to drive the Permanent Magnet Brushless Direct Current Motor. The proposed Zeta converter is suggested to control the speed of the Permanent Magnet Brushless Direct Current Motor, according to the generated switching sequence. The proposed work is generally used for low power applications and occasionally used for medium power applications.
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Korzeniewski, M., K. Kulikowski, J. Zakis, M. Jasinski i A. Malinowski. "Implementation of a Web-based remote control system for qZS DAB application using low-cost ARM platform". Bulletin of the Polish Academy of Sciences Technical Sciences 64, nr 4 (1.12.2016): 887–96. http://dx.doi.org/10.1515/bpasts-2016-0097.
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Abstract Continuous development of intelligent network applications drives the demand for deployment-ready hardware and software solutions. Such solutions are highly valued not only by distributed producers of energy but by energy consumers as well. The use of intelligent network applications enables the development and improvement of the quality of services. It also increases self-sufficiency and efficiency. This paper describes an example of such device that allows for the control of a dual active bridge (DAB) converter and enables its remote control in real time over an IP-based network. The details of both hardware and software components of proposed implementation are provided. The DAB converter gives a possibility to control and manage the energy between two DC power systems with very different voltage levels. Not only information, but also the quality of energy, the direction of power flow, and energy storage systems can be easily controlled through an IP-based network and power electronics converters. Information technology, together with intelligent control of power electronics technology, provides a flexible solution, especially for sustainable smart grids.
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Petrauskas, Gytis, i Gytis Svinkunas. "Application of Matrix VFD for Power Factor Improvement in LED Lighting Sources Loaded Power Distribution Lines". Energies 14, nr 12 (15.06.2021): 3546. http://dx.doi.org/10.3390/en14123546.
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In this paper, a novel approach to matrix-converter-based variable frequency drives is presented. It is proposed that these drives are used to provide or draw out reactive power from the power distribution line, keeping the power factor close to unit and, simultaneously, performing their primary function of motor powering and speed control. This application of matrix-converter-based variable frequency drives is required due to the need to compensate for capacitive reactive power generated by light emitting diode lighting devices. In this study, the reactive power compensation range of the matrix-converter-based variable frequency drive is determined, and a method is proposed to extend the compensation range.
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Pedrosa, Delfim, Vitor Monteiro, Tiago J. C. Sousa, Luis Machado i Joao L. Afonso. "Unified Power Converter Based on a Dual-Stator Permanent Magnet Synchronous Machine for Motor Drive and Battery Charging of Electric Vehicles". Energies 14, nr 11 (7.06.2021): 3344. http://dx.doi.org/10.3390/en14113344.
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An electric vehicle (EV) usually has two main power converters, namely one for the motor drive system and another for the battery-charging system. Considering the similarities between both converters, a new unified power converter for motor drive and battery charging of EVs is propounded in this paper. By using a single unified power converter, the cost, volume, and weight of the power electronics are reduced, thus also making possible a reduction in the final price of the EV. Moreover, the proposed unified power converter has the capability of bidirectional power flow. During operation in traction mode, the unified power converter controls motor driving and regenerative braking. Additionally, during operation in battery-charging mode, with the EV plugged into the electrical power grid, the unified power converter controls the power flow for slow or fast battery charging (grid-to-vehicle (G2V) mode), or for discharging of the batteries (vehicle-to-grid (V2G) mode). Specifically, this paper presents computer simulations and experimental validations for operation in both motor-driving and slow battery-charging mode (in G2V and V2G modes). It is demonstrated that the field-oriented control used in the traction system presents good performance for different values of mechanical load and that the battery-charging system operates with high levels of power quality, both in G2V and in V2G mode.
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Luo, Jianqiang, Yiqing Zou, Siqi Bu i Ulas Karaagac. "Converter-Driven Stability Analysis of Power Systems Integrated with Hybrid Renewable Energy Sources". Energies 14, nr 14 (16.07.2021): 4290. http://dx.doi.org/10.3390/en14144290.
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Renewable energy sources such as wind power and photovoltaics (PVs) have been increasingly integrated into the power system through power electronic converters in recent years. However, power electronic converter-driven stability has issues under specific circumstances, for instance, modal resonances might deteriorate the dynamic performance of the power systems or even threaten the overall stability. In this work, the integration impact of a hybrid renewable energy source (HRES) system on modal interaction and converter-driven stability was investigated in an IEEE 16-machine 68-bus power system. In this paper, firstly, an HRES system is introduced, which consists of full converter-based wind power generation (FCWG) and full converter-based photovoltaic generation (FCPV). The equivalent dynamic models of FCWG and FCPV are then established, followed by linearized state-space modeling. On this basis, converter-driven stability analysis was performed to reveal the modal resonance mechanisms between different renewable energy sources (RESs) and weak grids in the interconnected power systems and the multi-modal interaction phenomenon. Additionally, time-domain simulations were conducted to verify the effectiveness of dynamic models and support the converter-driven stability analysis results. To avoid detrimental modal resonances, a multi-modal and multi-parametric optimization strategy is further proposed by retuning the controller parameters of the multi-RESs in the HRES system. The overall results demonstrate the modal interaction effect between the external AC power system and the HRES system and its various impacts on converter-driven stability.