Artykuły w czasopismach: „Power Electronics and energy conversion”

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Ramya, M. V., G. Ramya, V. Thiruburasundari i N. Ramadevi. "Recent Trends in Power Electronics for Renewable energy Systems". March 2022 4, nr 1 (26.04.2022): 57–64. http://dx.doi.org/10.36548/jeea.2022.1.006.

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The complete world is focused on renewable power to reduce the global energy issue. Power electronic based energy conversion is being used extensively to improve the efficiency of the renewable energy conversion. It has a significant impact on the control and interface of renewable energy systems with both the network and stand-alone applications. As a result, increasing attention is being placed on the design and implementation of power converters. This study discusses the renewable energy systems (wind and solar) and the features of their energy conversion. The fundamental principles underlying their operations are discussed, as well as their recent technological advancements. It is a fact that power electronics is critical for interfacing and thus improving the system capacity.

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Ramya, M. V., G. Ramya, V. Thiruburasundari i N. Ramadevi. "Recent Trends in Power Electronics for Renewable energy Systems". March 2022 4, nr 1 (26.04.2022): 57–64. http://dx.doi.org/10.36548/jeea.2022.1.006.

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The complete world is focused on renewable power to reduce the global energy issue. Power electronic based energy conversion is being used extensively to improve the efficiency of the renewable energy conversion. It has a significant impact on the control and interface of renewable energy systems with both the network and stand-alone applications. As a result, increasing attention is being placed on the design and implementation of power converters. This study discusses the renewable energy systems (wind and solar) and the features of their energy conversion. The fundamental principles underlying their operations are discussed, as well as their recent technological advancements. It is a fact that power electronics is critical for interfacing and thus improving the system capacity.

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3

Ramya, M. V., G. Ramya, V. Thiruburasundari i N. Ramadevi. "Recent Trends in Power Electronics for Renewable energy Systems". March 2022 4, nr 1 (26.04.2022): 57–64. http://dx.doi.org/10.36548/jeea.2022.1.006.

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The complete world is focused on renewable power to reduce the global energy issue. Power electronic based energy conversion is being used extensively to improve the efficiency of the renewable energy conversion. It has a significant impact on the control and interface of renewable energy systems with both the network and stand-alone applications. As a result, increasing attention is being placed on the design and implementation of power converters. This study discusses the renewable energy systems (wind and solar) and the features of their energy conversion. The fundamental principles underlying their operations are discussed, as well as their recent technological advancements. It is a fact that power electronics is critical for interfacing and thus improving the system capacity.

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4

Rocha, J. E., i W. D. C. Sanchez. "The Energy Processing by Power Electronics and its Impact on Power Quality". International Journal of Renewable Energy Development 1, nr 3 (3.11.2012): 99. http://dx.doi.org/10.14710/ijred.1.3.99-105.

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This paper discusses the electrical architectures adopted in wind turbines and its impact on the harmonic flux at the connected electric network. The integration of wind electric generators with the power grid needs energy processing by power electronics. It shows that different types of wind turbine generator systems use different types of electronic converters. This work provides a discussion on harmonic distortion taking place on the generator side, as well as in the power grid side. Keywords: grid connection, harmonic distortion, power electronics and converters, wind energy conversion systems, wind power, wind technology, wind turbines

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Okundamiya, Michael S. "Power Electronics for Grid Integration of Wind Power Generation System". Journal of Communications Technology, Electronics and Computer Science 9 (27.12.2016): 10. http://dx.doi.org/10.22385/jctecs.v9i0.129.

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The rising demands for a sustainable energy system have stimulated global interests in renewable energy sources. Wind is the fastest growing and promising source of renewable power generation globally. The inclusion of wind power into the electric grid can severely impact the monetary cost, stability and quality of the grid network due to the erratic nature of wind. Power electronics technology can enable optimum performance of the wind power generation system, transferring suitable and applicable energy to the electricity grid. Power electronics can be used for smooth transfer of wind energy to electricity grid but the technology for wind turbines is influenced by the type of generator employed, the energy demand and the grid requirements. This paper investigates the constraints and standards of wind energy conversion technology and the enabling power electronic technology for integration to electricity grid.

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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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Kularatna, Nihal, Kasun Subasinghage, Kosala Gunawardane, Dilini Jayananda i Thilanga Ariyarathna. "Supercapacitor-Assisted Techniques and Supercapacitor-Assisted Loss Management Concept: New Design Approaches to Change the Roadmap of Power Conversion Systems". Electronics 10, nr 14 (15.07.2021): 1697. http://dx.doi.org/10.3390/electronics10141697.

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All electrical and electronic devices require access to a suitable energy source. In a portable electronic product, such as a cell phone, an energy storage unit drives a complex array of power conversion stages to generate multiple DC voltage rails required. To optimize the overall end-to-end efficiency, these internal power conversions should waste minimal energy and deliver more to the electronic modules. Capacitors are one of the main component families used in electronics, to store and deliver electric charges. Supercapacitors, so called because they provide over a million-fold increase in capacitance relative to a traditional capacitor of the same volume, are enabling a paradigm shift in the design of power electronic converter circuits. Here we show that supercapacitors could function as a lossless voltage-dropping element in the power conversion stages, thereby significantly increasing the power conversion stage efficiency. This approach has numerous secondary benefits: it improves continuity of the supply, suppresses voltage surges, allows the voltage regulation to be electromagnetically silent, and simplifies the design of voltage regulators. The use of supercapacitors allows the development of a novel loss-circumvention theory with applicability to a wide range of supercapacitor-assisted (SCA) techniques. These include low-dropout regulators, transient surge absorbers, LED lighting for DC microgrids, and rapid energy transfer for water heating.

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Gedra, T. W., S. An, Q. H. Arsalan i S. Ray. "Unified Power Engineering Laboratory for Electromechanical Energy Conversion, Power Electronics, and Power Systems". IEEE Transactions on Power Systems 19, nr 1 (luty 2004): 112–19. http://dx.doi.org/10.1109/tpwrs.2003.820997.

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Fang, Jian, Xun Gai Wang i Tong Lin. "Power Generation from Randomly Oriented Electrospun Nanofiber Membranes". Advanced Materials Research 479-481 (luty 2012): 340–43. http://dx.doi.org/10.4028/www.scientific.net/amr.479-481.340.

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Randomly orientated electrospun poly(vinylidene fluoride) nanofiber membranes were directly used as active layers to make mechanical-to-electrical energy conversion devices. Without any extra poling treatment, the device can generate high electrical outputs upon receiving a mechanical impact. The device also showed long-term working stability and ability to drive electronic devices. Such a nanofiber membrane device may serve as a simple but efficient energy source for self-powered electronics.

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Miazga, Tomasz, Grzegorz Iwański i Marcin Nikoniuk. "Energy Conversion System and Control of Fuel-Cell and Battery-Based Hybrid Drive for Light Aircraft". Energies 14, nr 4 (18.02.2021): 1073. http://dx.doi.org/10.3390/en14041073.

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The paper presents a power electronic conversion system and its control for a fuel cell and a battery-based hybrid drive system for a motor glider. The energy conversion system is designed in such a way that the fuel cell gives power equal to the electric drive power demand for horizontal flight, whereas during motor glider take-off and climbing, the fuel cell is supported by the battery. The paper presents the power demand related to the assumed mission profile, the main components of the hybrid drive system and its holistic structure, and details of power electronics control. Selected stationary experimental test results related to the energy conversion and drive system are shown. Some results related to the aircraft tests on a runway are presented.

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Chen, Zhe, i Josep M. Guerrero. "Editorial Special Issue on Power Electronics for Wind Energy Conversion". IEEE Transactions on Power Electronics 23, nr 3 (maj 2008): 1038–40. http://dx.doi.org/10.1109/tpel.2008.920875.

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Dunbar, Steven, i Zoya Popović. "Low-power electronics for energy harvesting sensors". Wireless Power Transfer 1, nr 1 (marzec 2014): 35–43. http://dx.doi.org/10.1017/wpt.2014.5.

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This paper addresses low-power, low-voltage electronic circuit requirements for wireless sensors with energy harvesting. The challenges of start-up for micro-controller unit (MCU)-based energy-harvesting platforms is discussed where a transient, low-voltage (20–1000 mV), low-power (<100 μW) source having a relatively high source impedance (possibly >500 Ω) is used. Efficient converter circuitry is required to transform the low-voltage output from the source to a level suitable for typical electronic devices, 1.8–5 V, and a prototype is demonstrated in the paper. Owing to the limited energy available to deliver to the storage element, the converter output voltage typically has a slow rising slew rate that can be a problem for MCUs. This necessitates a reset circuit to hold-off operation until a level high enough for reliable operation is achieved. Once operational, Maximum Power Point Tracking (MPPT) extracts peak power from the harvester while simultaneously tracking the transient nature of the source. In this low-power application, MCU programming needs to be efficient, while otherwise keeping the MCU in the lowest power standby mode possible to conserve energy. In a fully integrated design, a single MCU may be used for the sensor application, power management, power conversion, and MPPT functions.

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Musumeci, Salvatore. "Special Issue “Advanced DC-DC Power Converters and Switching Converters”". Energies 15, nr 4 (20.02.2022): 1565. http://dx.doi.org/10.3390/en15041565.

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Aguemon, Dourodjayé Pierre, Richard Gilles Agbokpanzo i Frédéric Dubas. "Analysis on the Topology and Control of Power Electronics Converters for Wind Energy Conversion Systems". International Journal of Research and Review 8, nr 8 (9.08.2021): 127–37. http://dx.doi.org/10.52403/ijrr.20210819.

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Power Electronics converters become nowadays the most important part in Wind Energy Conversion Systems (WECS). They are an intermediate between the generator and grid to achieve low cost, high power density and reliability. This paper deals with the analysis on the topology and control of the most power Electronics Converters for generators using in WECS. Design, (dis)advantages, and market penetration are analyzed and discussed. The control includes maximum power point tracking, dc bus voltage control, balancing of the dc capacitor voltages, and reactive power generation are also analyzed. Simulations have been carried out using MATLAB/SIMULINK on the control strategies for the case of back to back converter with Pulse Width Modulation (PWM) demonstrating its good potential to meet the grid connection requirements. Keywords: Wind Energy Conversion Systems (WECS), power electronics converters, back to back converter, maximum power point tracking, Pulse Width Modulation (PWM).

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Hansen, Sandra, Frederik Hahn, Helge Krueger, Felix Hoffmann, Markus Andresen, Rainer Rainer Adelung i Marco Liserre. "Reliability of Silicon Battery Technology and Power Electronics Based Energy Conversion". IEEE Power Electronics Magazine 8, nr 2 (czerwiec 2021): 60–69. http://dx.doi.org/10.1109/mpel.2021.3075756.

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J, Berin Christo, i Elanthirayan R. "Design and Implementation of Triboelectric Generator for energy generation". International Journal for Research in Applied Science and Engineering Technology 10, nr 3 (31.03.2022): 559–67. http://dx.doi.org/10.22214/ijraset.2022.40676.

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Abstract: Intelligent electronics, such as smart wearable electronic devices, implantable devices, wireless sensor networks, and so on, have significantly increased the development of renewable and sustainable power sources on a small scale. At the moment, batteries are used to power these electronic devices, which have a limited lifespan and cause environmental issues, and monitoring and replacing all of the batteries used for the wireless sensor networks distributed around the world is a massive and impossible task. Among these novel energy harvesting technologies, the triboelectric nanogenerator (TENG) has demonstrated significant potential to address power issues due to its advantages of high energy-conversion efficiency, high power output, good reliability, low cost, and environmental friendliness. In this paper, we examine the progress made in TENG as a flexible power source. Keywords: Triboelectric nanogenerators, wireless sensor networks, hybrid energy cells.

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Nwalike, Ezekiel Darlington, Khalifa Aliyu Ibrahim, Fergus Crawley, Qing Qin, Patrick Luk i Zhenhua Luo. "Harnessing Energy for Wearables: A Review of Radio Frequency Energy Harvesting Technologies". Energies 16, nr 15 (31.07.2023): 5711. http://dx.doi.org/10.3390/en16155711.

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Wireless energy harvesting enables the conversion of ambient energy into electrical power for small wireless electronic devices. This technology offers numerous advantages, including availability, ease of implementation, wireless functionality, and cost-effectiveness. Radio frequency energy harvesting (RFEH) is a specific type of wireless energy harvesting that enables wireless power transfer by utilizing RF signals. RFEH holds immense potential for extending the lifespan of wireless sensors and wearable electronics that require low-power operation. However, despite significant advancements in RFEH technology for self-sustainable wearable devices, numerous challenges persist. This literature review focuses on three key areas: materials, antenna design, and power management, to delve into the research challenges of RFEH comprehensively. By providing an up-to-date review of research findings on RFEH, this review aims to shed light on the critical challenges, potential opportunities, and existing limitations. Moreover, it emphasizes the importance of further research and development in RFEH to advance its state-of-the-art and offer a vision for future trends in this technology.

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Liu, Wenjie, Kamran Ali Khan Niazi, Tamas Kerekes i Yongheng Yang. "A Review on Transformerless Step-Up Single-Phase Inverters with Different DC-Link Voltage for Photovoltaic Applications". Energies 12, nr 19 (23.09.2019): 3626. http://dx.doi.org/10.3390/en12193626.

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Photovoltaic (PV) energy has been competitive in power generation as an alternative to fossil energy resources over the past decades. The installation of grid-connected solar energy systems is expected to increase rapidly with the fast development of the power electronics technology. As the key to the interface of the PV energy and the grid, power converters should be reliable, efficient and comply with the grid requirements. Considering the nature of PV energy, the power conversion should be flexible (e.g., high step-up DC-DC conversion and harmonic-free DC-AC conversion). Accordingly, many power electronic converters have been reported in literature. Compared with isolated inverters, transformerless inverters show great advantages. This paper thus presents an overview of the transformerless step-up single-phase inverters for PV applications based on the dc-link configurations. Grid-connected PV inverters are classified as constant dc-link voltage structures, pseudo-dc-link voltage structures, pulsating dc-link voltage structures and integrated dc-link voltage structures. The discussion on the composition of different dc-link structures is presented, which provides guidance to select appropriate transformerless inverter topologies for PV applications.

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Wang, Yao, Lu Yang, Yantao Zheng, Dangxiao Wang i Yuan Deng. "Flexible thermoelectrics: From energy harvesting to human–machine interaction". Journal of Applied Physics 133, nr 11 (21.03.2023): 110901. http://dx.doi.org/10.1063/5.0135663.

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Thermoelectrics is the simplest technology applicable for direct energy conversion between heat and electricity. After over 60 years of fruitful research efforts, recent boom in flexible electronics has promoted the rapid development of flexible thermoelectrics with rising performances, discovery of new materials and concepts, unconventional device configuration, and emerging applications not possible for traditional thermoelectric (TE) semiconductors. In this Perspective, we first overview representative flexible TE materials, then discuss recent breakthroughs for flexible TE devices assembled from various types of TE materials employing different technical routes. They exhibit promising power generation and sensing performances, and aim for applications in wearable electronics, such as the power supply harvesting heat from body for low-power electronics, temperature sensors for tactile e-skin, and newly emerged application as a thermo-haptic device in an extended reality system.

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van Wyk, J. D., H. Ch Skudelny i A. Müller-Hellmann. "Power electronics, control of the electromechanical energy conversion process and some applications". IEE Proceedings B Electric Power Applications 133, nr 6 (1986): 369. http://dx.doi.org/10.1049/ip-b.1986.0052.

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Arifujjaman, Md, M. T. Iqbal i J. E. Quaicoe. "Power Electronics Reliability Comparison of Grid Connected Small Wind Energy Conversion Systems". Wind Engineering 35, nr 1 (luty 2011): 93–110. http://dx.doi.org/10.1260/0309-524x.35.1.93.

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Gong, Cihun-Siyong Alex, Shiang-Wei Li i Muh-Tian Shiue. "A Bootstrapped Comparator-Switched Active Rectifying Circuit for Wirelessly Powered Integrated Miniaturized Energy Sensing Systems". Sensors 19, nr 21 (30.10.2019): 4714. http://dx.doi.org/10.3390/s19214714.

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Human life expectancy has gradually increased in part through rapid advances in technology, including the development and use of wearable and implantable biomedical electronic devices and sensing monitors. A new architecture is proposed in this paper to replace the traditional diode circuit implementation in wireless power supply systems applied to the above-mentioned devices and monitors. By achieving near-ideal power transistor switching and leveraging the characteristics of conventional diodes to prevent reverse current, the proposed approach greatly improves the performance of the energy harvester in power conversion. The MOS harvester used in the uninterrupted permanent wireless near-field power supply described here for use in biomedical systems was designed and verified using the Taiwan Semiconductor Manufacturing Company (TSMC) standard 180-nm process, achieving performance results of Voltage conversion efficiency (VCE) = 73.55–95.12% and Power conversion efficiency (PCE) = 80.36–90.08% with the output load (0.1–1 kΩ) under 3.3 V ac input with an overall area of 1.189 mm2. These results are expected to create an important technical niche for new “green-energy” miniaturized energy sensing systems including cutting edge wirelessly powered biomedical electronics applications.

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Cappelli, Luigi, Fabrizio Marignetti, Enzo de Santis, Yuri Coia i Roberto di Stefano. "Design of a Moving-Coil Linear Generator for Marine Energy Conversion". Applied Mechanics and Materials 416-417 (wrzesień 2013): 311–16. http://dx.doi.org/10.4028/www.scientific.net/amm.416-417.311.

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The Inertial Sea Wave Converter is a device that uses the effect of a gyroscope to convert wave energy into electric energy. It is equipped with two Linear Tubular Permanent Magnet Generators. This paper describes the design and optimization processes for a moving-coil linear generator to be installed on the Inertial Sea Wave Converter. FEM Analysis has been performed to validate the design and to optimize forces and generated power. A Power Factor Corrector has been developed as frontend electronics.

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Boukadoum, A., A. Bouguerne i T. Bahi. "Direct power control using space vector modulation strategy control for wind energy conversion system using three-phase matrix converter". Electrical Engineering & Electromechanics, nr 3 (23.04.2023): 40–46. http://dx.doi.org/10.20998/2074-272x.2023.3.06.

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Introduction. Wind energy conversion system is getting a lot of attention since, they are provide several advantages, such as cost competitive, environmentally clean, and safe renewable power source as compared with the fossil fuel and nuclear power generation. A special type of induction generator, called a doubly fed induction generator is used extensively for high-power wind energy conversion system. They are used more and more in wind turbine applications due to the advantages of variable speed operation range and its four quadrants active and reactive power capabilities, high energy efficiency, and the improved power quality. Wind energy conversion systems require a good choice of power electronic converters for the improvement of the quality of the electrical energy produced at the generator terminals. There are several power electronics converters that are the most popular such as the two stage back-back converter. Because of the disadvantage of these converters to produce large harmonics distortions, we will choose using of three-phase matrix converter. Purpose. Work presents a direct power control using space vector modulation for a doubly fed induction generator based wind turbine. The main strategy control is to control the active and reactive powers and reduce the harmonic distortion of stator currents for variable wind speed. The novelty of the work is to use a doubly fed induction machine and a three pulses matrix converter to reduce the low cost, volume and the elimination of the grid side converter controller are very attractive aspects of the proposed topology compared to the conventional methods such as back-to-back converters. Simulation results are carried out on a 1.5 MW of wind energy conversion system connected to the grid. The efficiency of the proposed system has been simulated and high results performances are evaluated to show the validity of the proposed control strategy to decouple and control the active and reactive power for different values of wind speed.

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Li, Shiqi, i Zhaoyang Fan. "Special Issue: Advances in Electrochemical Energy Materials". Materials 13, nr 4 (13.02.2020): 844. http://dx.doi.org/10.3390/ma13040844.

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Electrochemical energy storage is becoming essential for portable electronics, electrified transportation, integration of intermittent renewable energy into grids, and many other energy or power applications. The electrode materials and their structures, in addition to the electrolytes, play key roles in supporting a multitude of coupled physicochemical processes that include electronic, ionic, and diffusive transport in electrode and electrolyte phases, electrochemical reactions and material phase changes, as well as mechanical and thermal stresses, thus determining the storage energy density and power density, conversion efficiency, performance lifetime, and system cost and safety. Different material chemistries and multiscale porous structures are being investigated for high performance and low cost. The aim of this Special Issue is to report the recent advances of materials used in electrochemical energy storage that encompasses supercapacitors and rechargeable batteries.

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Soomro, Abdul Hameed. "Mathematical Modeling and Simulation of AC-AC Three Phase Matrix Converter with LC Filter driving Static Resistive Load". Quaid-e-Awam University Research Journal of Engineering, Science & Technology 20, nr 2 (28.12.2022): 107–13. http://dx.doi.org/10.52584/qrj.2002.14.

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During the last two decades, it has been seen that power conversion from one form to another form of energy was a serious issue in power electronics. After the production of power converters such as rectifiers that convert AC-DC, inverters that convert DC-AC, voltage regulators, choppers, and cycloconverters make possible power conversion. In 1980, Venturini presented the concept of the Matrix Converter in power electronics; it consists of bidirectional IGBT switches and can conduct current and block reverse and forward voltage. Nowadays matrix converter is frequently utilized for power conversion because it can convert AC-AC, AC-DC, DC-DC, and DC- AC directly without an energy storage device which results in less complexity and cost. In matrix converters, high switching frequency harmonics are produced due to the switching of converters and need to be minimized. In this paper, an LC filter is employed to mitigate the problem of harmonics at the output of the three-phase matrix converter. A three-phase matrix converter with an LC filter is presented in this paper and the SVM technique is used for the generation of pulses. Simulation results are carried out through MATLAB software.

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Yiming Liu, Geng Tian, Yong Wang, Junhong Lin, Qiming Zhang i Heath F. Hofmann. "Active Piezoelectric Energy Harvesting: General Principle and Experimental Demonstration". Journal of Intelligent Material Systems and Structures 20, nr 5 (28.11.2008): 575–85. http://dx.doi.org/10.1177/1045389x08098195.

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In piezoelectric energy harvesting systems, the energy harvesting circuit is the interface between a piezoelectric device and an electrical load. A conventional view of this interface is based on impedance matching concepts. In fact, an energy harvesting circuit can also apply electrical boundary conditions, such as voltage and charge, to the piezoelectric device for each energy conversion cycle. An optimized electrical boundary condition can therefore increase the mechanical energy flow into the device and the energy conversion efficiency of the device. We present a study of active energy harvesting, a type of energy harvesting approach which uses switch-mode power electronics to control the voltage and/or charge on a piezoelectric device relative to the mechanical input for optimized energy conversion. Under quasi-static assumptions, a model based on the electromechanical boundary conditions is established. Some practical limiting factors of active energy harvesting, due to device limitations and the efficiency of the power electronic circuitry, are discussed. In the experimental part of the article, active energy harvesting is demonstrated with a multilayer PVDF polymer device. In these experiments, the active energy harvesting approach increased the harvested energy by a factor of five for the same mechanical displacement compared to an optimized diode rectifier-based circuit.

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Liang, Jiasheng, Tuo Wang, Pengfei Qiu, Shiqi Yang, Chen Ming, Hongyi Chen, Qingfeng Song i in. "Flexible thermoelectrics: from silver chalcogenides to full-inorganic devices". Energy & Environmental Science 12, nr 10 (2019): 2983–90. http://dx.doi.org/10.1039/c9ee01777a.

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Flexible thermoelectrics is a synergy of flexible electronics and thermoelectric energy conversion. In this work, we fabricated flexible full-inorganic thermoelectric power generation modules based on doped silver chalcogenides.

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Duran, Mario J., Federico Barrero, Ana Pozo-Ruz, Francisco Guzman, Jose Fernandez i Hugo Guzman. "Understanding Power Electronics and Electrical Machines in Multidisciplinary Wind Energy Conversion System Courses". IEEE Transactions on Education 56, nr 2 (maj 2013): 174–82. http://dx.doi.org/10.1109/te.2012.2207119.

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van Wyk, J. D., H. Ch Skudelny i A. Müller-Hellmann. "Erratum: Power electronics, control of the electromechanical energy conversion process and some applications". IEE Proceedings B Electric Power Applications 134, nr 3 (1987): 175. http://dx.doi.org/10.1049/ip-b.1987.0027.

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Tadbiri-Nooshabadi, Morteza, Jean-Luc Schanen, Shahrokh Farhangi, Hossein Iman-Eini i Corentin Rizet. "Optimal Design of PV Inverter Using LCOE Index". Energies 16, nr 5 (24.02.2023): 2213. http://dx.doi.org/10.3390/en16052213.

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This work uses design optimization of a power electronics converter to achieve the best levelized cost of energy in a PV application. The methodology uses detailed models of power electronics’ active and passive components to determine the cost and performances of the solid-state energy conversion and connect them to the system-level vision. The deterministic algorithm used for converter sizing allows taking into account a large number of variables and constraints. Methodology, models, and some illustrations of the results are provided in this paper. A sensitivity analysis was also conducted on the cost model.

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Granata, Samuele, Marco Di Benedetto, Cristina Terlizzi, Riccardo Leuzzi, Stefano Bifaretti i Pericle Zanchetta. "Power Electronics Converters for the Internet of Energy: A Review". Energies 15, nr 7 (2.04.2022): 2604. http://dx.doi.org/10.3390/en15072604.

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This paper presents a comprehensive review of multi-port power electronics converters used for application in AC, DC, or hybrid distribution systems in an Internet of Energy scenario. In particular, multi-port solid-state transformer (SST) topologies have been addressed and classified according to their isolation capabilities and their conversion stages configurations. Non-conventional configurations have been considered. A comparison of the most relevant features and design specifications between popular topologies has been provided through a comprehensive and effective table. Potential benefits of SSTs in distribution applications have been highlighted even with reference to a network active nodes usage. This review also highlights standards and technical regulations in force for connecting SSTs to the electrical distribution system. Finally, two case studies of multi-port topologies have been presented and discussed. The first one is an isolated multi-port bidirectional dual active bridge DC-DC converter useful in fast-charging applications. The second case of study deals with a three-port AC-AC multi-level power converter in H-Bridge configuration able to replicate a network active node and capable of routing and controlling energy under different operating conditions.

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Kamran, Muhammad, Mahesh Edla, Ahmed Mostafa Thabet, Mustafa Ucgul, Deguchi Mikio i Vinh Bui. "A Self-Powered VDJT AC–DC Conversion Circuit for Piezoelectric Energy Harvesting Systems". Designs 7, nr 4 (20.07.2023): 94. http://dx.doi.org/10.3390/designs7040094.

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A comprehensive model for micro-powered piezoelectric generator (PG), analysis of operation, and control of voltage doubler joule thief (VDJT) circuit to find the piezoelectric devices (PD’s) optimum functioning points are discussed in the present article. The proposed model demonstrates the power dependence of the PG on mechanical excitation, frequency, and acceleration, as well as outlines the load behaviour for optimal operation. The proposed VDJT circuit integrates the combination of voltage doubler (VD) and joule thief circuit, whereas the VD circuit works in Stage 1 for AC (alternating current)–DC (direct current) conversion, while a joule thief circuit works in Stage 2 for DC–DC conversion. The proposed circuit functions as an efficient power converter, which converts power from AC–DC and boosts the voltage from low to high without employing any additional electronic components and generating duty cycles. The electrical nature of the input (i.e., PD) of a VDJT circuit is in perfect arrangement with the investigated optimisation needs when using the proposed control circuit. The effectiveness of the proposed VDJT circuit is examined in terms of both simulation and experiment, and the results are presented. The proposed circuit’s performance was validated with available results of power electronics interfaces in the literature. The proposed circuit’s flexibility and controllability can be used for various applications, including mobile battery charging and power harvesting.

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Kwong, D. L., X. Li, Y. Sun, G. Ramanathan, Z. X. Chen, S. M. Wong, Y. Li i in. "Vertical Silicon Nanowire Platform for Low Power Electronics and Clean Energy Applications". Journal of Nanotechnology 2012 (2012): 1–21. http://dx.doi.org/10.1155/2012/492121.

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This paper reviews the progress of the vertical top-down nanowire technology platform developed to explore novel device architectures and integration schemes for green electronics and clean energy applications. Under electronics domain, besides having ultimate scaling potential, the vertical wire offers (1) CMOS circuits with much smaller foot print as compared to planar transistor at the same technology node, (2) a natural platform for tunneling FETs, and (3) a route to fabricate stacked nonvolatile memory cells. Under clean energy harvesting area, vertical wires could provide (1) cost reduction in photovoltaic energy conversion through enhanced light trapping and (2) a fully CMOS compatible thermoelectric engine converting waste-heat into electricity. In addition to progress review, we discuss the challenges and future prospects with vertical nanowires platform.

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Pajchrowski, Tomasz, Michał Krystkowiak i Dominik Matecki. "Modulation Variants in DC Circuits of Power Rectifier Systems with Improved Quality of Energy Conversion—Part I". Energies 14, nr 7 (29.03.2021): 1876. http://dx.doi.org/10.3390/en14071876.

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The article presents various concepts of three-phase power rectifiers with improved quality of converted electric power. This effect is obtained by modulating the currents in the DC output circuits of the rectifiers by means of power electronics controlled voltage or current sources, working as a so-called voltage or current modulators. For further quality improvement of the grid currents of the analyzed systems, it was proposed to use an additional controlled current source connected in parallel to the DC load, hereinafter referred to as a supporting system. The original elaborated method of controlling this source (supporting system) was presented. The main goal of the work was to propose a solution for an effective method of improving the quality of energy conversion in rectifier systems, especially high power ones, by using controlled current sources in DC circuits, operating as the power electronics current modulator and the supporting system.

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Zacharias, Peter. "Perspectives of SiC Power Devices in Highly Efficient Renewable Energy Conversion Systems". Materials Science Forum 615-617 (marzec 2009): 889–94. http://dx.doi.org/10.4028/www.scientific.net/msf.615-617.889.

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In the long run, regenerative energy sources represent the most important alternatives to fossil fuels. In general, they are characterized by decentralized logistics and supply capabilities due to ihnerent lower energetic densitiy per are, when compared with the fossil counterparts. As a result, the increased use of regenerative energy sources will require decentralized structures for energy supply, consumption optimisation and regional balancing between supply and demand. Both, the more efficient utilization of fossil energy sources and the utilization of regenerative energy sources, lead to increasingly decentralized supply structures and can be understood as being both complementary and convergent in relation to each other. Most of the converter units for utilization of decentralized energy resources (DER) use power electronics for the AC power conditioning with grid quality. The current paper shows market perspectives of DER applications and the impact of SiC on these application.

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Perez-Pinal, Francisco J. "Editorial for the Special Issue on Emerging Power Electronics Technologies for Sustainable Energy Conversion". Micromachines 13, nr 4 (30.03.2022): 539. http://dx.doi.org/10.3390/mi13040539.

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Rajashekara, Kaushik, i Bilal Akin. "Cryogenic Power Conversion Systems: The next step in the evolution of power electronics technology." IEEE Electrification Magazine 1, nr 2 (grudzień 2013): 64–73. http://dx.doi.org/10.1109/mele.2013.2282195.

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SAIDI, Fayssal, Elhadj BOUNADJA i Abdelkader DJAHBAR. "Implementing the Venturini Modulation technique for controlling an AC/AC Matrix Converter". All Sciences Abstracts 1, nr 3 (25.06.2023): 9. http://dx.doi.org/10.59287/as-abstracts.930.

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These abstract focuses on the implementation of the Venturini modulation technique for controlling a three-phase matrix converter. The Venturini modulation technique is a widely adopted method in the field of power electronics, utilized to achieve precise control over the operation and performance of converters. In this particular application, the technique is employed to regulate and optimize a three-phase matrix converter's functionality. The three-phase matrix converter serves as a specialized power electronic device responsible for converting electrical energy between three-phase systems with varying voltage and frequency. By implementing the Venturini modulation technique, the converter's operation can be optimized, ensuring efficient power conversion and optimal utilization of its resources. The Venturini modulation technique enables the converter to accurately control the output voltage and frequency, resulting in improved power quality and enhanced overall system performance. To implement this technique, specific control algorithms and strategies are employed, allowing the converter to dynamically adjust the switching patterns of its semiconductor switches, thereby generating the desired output waveform. In summary, the implementation of the Venturini modulation technique for controlling a three-phase matrix converter is a vital step in optimizing power conversion, improving power quality, and enhancing overall system performance. This abstract highlight the importance of this implementation and its potential impact on power electronics and electrical systems in diverse applications.

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Bellarbi, Samir. "Electromechanical Study the Wind Energy Conversion System Based DFIG and SCIG Generators". International Journal of Mechanics 15 (14.07.2021): 102–6. http://dx.doi.org/10.46300/9104.2021.15.11.

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Generally speaking, asynchronous generators are used more frequently in medium power in wind energy conversion systems WECS applications. Depending on the power electronics converter used in the specific application, the operation of the asynchronous machine can be controlled in nested speed torque loops, using different torque control algorithms. Because WECS are highly nonlinear systems, but with smooth nonlinearities, a possible optimal control design solution can be the maximum power point tracking MPPT in this paper. This research describes a comparison of the power quality for wind power systems based on two generators: the squirrel-cage induction generator (SCIG), the doubly fed induction generator (DFIG). At first, we simulated SCIG and DFIG in MATLAB/Simulink and investigates the impact of this generators on the power system stability for compare the results and to comment on the best option based on the output characteristics of the generator and wind turbine. The technical objective of this research is to choose the most suitable generator adaptive with changing wind speeds and the most energy production

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Savio, Paolo, Anantaram Varatharajan, Erasmo Vizzaccaro, Sherif Abdelfattah, Giuseppe Franco, Silvio Abrate, Gianmario Pellegrino i Vittorio Curri. "Control of Power Electronics through a Photonic Bus: Feasibility and Prospects". Journal of Sensor and Actuator Networks 7, nr 4 (3.12.2018): 53. http://dx.doi.org/10.3390/jsan7040053.

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The ubiquitous diffusion of Power Electronic Converters (PECs) in many fields of application including traction and energy conversion suggests the possibility of new and better integration of advanced power conversion and Information and Communication Technology (ICT) services. This work investigates the possible advancements in the use of optical communication links made of plastic optical fibers for control of PECs. The optical communication link connects the switching control to the converter control, following the line of separation between the expertise of power electronic and control engineers. Control wise, a PEC is a black box compatible with any off-board controller, now immune from the Electromagnetic Interference (EMI) produced by the power switches. The redundant optical link is ready for the high switching and sampling frequencies, made possible by relying on SiC power semiconductor devices (100+ kHz). Distributed control of multiple PEC units and advanced telemetry for diagnostics and prognostics are targeted. A proof-of-concept demonstrator is presented and tested. Moreover, the possible evolution towards a power electronic cloud with remote management and orchestration is described.

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Hannan, M. A., M. S. Hossain Lipu, Pin Jern Ker, R. A. Begum, Vasilios G. Agelidis i F. Blaabjerg. "Power electronics contribution to renewable energy conversion addressing emission reduction: Applications, issues, and recommendations". Applied Energy 251 (październik 2019): 113404. http://dx.doi.org/10.1016/j.apenergy.2019.113404.

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Muralidharan, S., M. Muhaidheen, R. Banumalar i S. Alagammal. "Optimization of Harmonics in Novel Multilevel Inverter using Black Wolf and Whale Optimization algorithms". International Journal of Electrical and Electronics Research 10, nr 3 (30.09.2022): 705–10. http://dx.doi.org/10.37391/ijeer.100347.

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High-quality electrical energy is the most needed thing for standard living. We use power electronics converters for the conversion of different forms of electrical energy and we use them for producing quality power output. We use semiconductor devices as switches in the process of conversion of DC-DC, AC-DC, AC-AC, and DC-AC according to the requirement of the system. In this paper, an attempt is made to analyze the quality of output power from a multilevel inverter which is used in the conversion of DC supply to AC output voltage. Production of quality power by optimizing the multilevel inverter switching using Whale Optimization Algorithm helps the proposed inverter topology to perform well. The suggested topology and the optimization technique will help in harvesting multiple renewable energy sources with improved quality of power. Different DC sources of different voltage levels could be connected in input and the resultant AC output has less ripple content as per the IEEE standard. A detailed comparison has been made to show the superiority of the proposed algorithm.

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Ibrahim, Ali, Zoubir Khatir i Laurent Dupont. "Characterization and Aging Test Methodology for Power Electronic Devices at High Temperature". Advanced Materials Research 324 (sierpień 2011): 411–14. http://dx.doi.org/10.4028/www.scientific.net/amr.324.411.

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Power electronic modules are key elements in the chain of power conversion. The application areas include aerospace, aviation, railway, electrical distribution, automotive, home automation, oil industry ... But the use of power electronics in high temperature environments is a major strategic issue in the coming years especially in transport. However, the active components based on silicon are limited in their applications and not suitable for those require both high voltages and high ambient temperatures. The materials with wide energy gap like SiC, GaN and diamond, have the advantage of being able to exceed these limits [1,2]. These materials seem adequate to extremely harsh temperature environments and allow the reduction of cooling systems, but also the increasing of switching frequency.

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Meng, Fanyi, Chenfei Wang, Ziheng Liu, Kaixue Ma, Don Disney i Kiat Seng Yeo. "Heterogeneous Integration: A Promising Technology to Future Integrated Power Conversion Electronics". IEEE Power Electronics Magazine 8, nr 3 (wrzesień 2021): 37–47. http://dx.doi.org/10.1109/mpel.2021.3099519.

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Blouh, Fatima-ezzahra, Basma Boujidi i Mohamed Bezza. "Wind energy conversion system based on DFIG using three-phase AC-AC matrix converter". International Journal of Power Electronics and Drive Systems (IJPEDS) 14, nr 3 (1.09.2023): 1865. http://dx.doi.org/10.11591/ijpeds.v14.i3.pp1865-1875.

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<p><span lang="EN-US">Due to the development of power electronics technology, the use of a new generation of power converter AC-AC matrix converters has received special attention, which provides direct power converter AC-AC, bidirectional power flow, near-sinusoidal input, and output waveforms. The performance analysis of a variable-speed wind turbine based on a doubly fed induction generator and connected to the main grid through a three-phase matrix converter is presented in this paper. Additionally, this paper proposes the utilization of a space vector modulation approach in the three-phase matrix converter. Other benefits of the space vector modulation approach include lower total harmonic distortion of output voltage and lower switching loss. The simulation analysis of the proposed power conversion system using MATLAB/Simulink/SimPowerSystems toolbox R2021a is presented in this paper.</span></p>

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Maolikul, Surapree, Thira Chavarnakul i Somchai Kiatgamolchai. "Market Opportunity Analysis in Thailand: Case of Individual Power Sources by Thermoelectric-Generator Technology for Portable Electronics". International Journal of Innovation and Technology Management 16, nr 03 (maj 2019): 1950027. http://dx.doi.org/10.1142/s0219877019500275.

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Thermoelectrics, an energy-conversion technology, has been developed for its potential to support portable electronics with an innovative power source. Primarily focusing on the metropolitan market in Thailand, the study, thus, aimed at the market insight into portable electronics users’ characteristics and opinions of thermoelectric-generator (TEG) technology commercialization. The business research was conducted to analyze their behaviors for power-supply lacking problems, encountering heat or cold sources, purchasing decision for a TEG-based charger and key decision factors. For practical applications, an innovative TEG-based charger should be more flexible by harnessing various heat or cold sources from ambient situations to generate electrical power.

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Ibrahim, Husam Hamid, Mandeep S. J. Singh, Samir Salem Al-Bawri i Mohammad Tariqul Islam. "Synthesis, Characterization and Development of Energy Harvesting Techniques Incorporated with Antennas: A Review Study". Sensors 20, nr 10 (13.05.2020): 2772. http://dx.doi.org/10.3390/s20102772.

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The investigation into new sources of energy with the highest efficiency which are derived from existing energy sources is a significant research area and is attracting a great deal of interest. Radio frequency (RF) energy harvesting is a promising alternative for obtaining energy for wireless devices directly from RF energy sources in the environment. An overview of the energy harvesting concept will be discussed in detail in this paper. Energy harvesting is a very promising method for the development of self-powered electronics. Many applications, such as the Internet of Things (IoT), smart environments, the military or agricultural monitoring depend on the use of sensor networks which require a large variety of small and scattered devices. The low-power operation of such distributed devices requires wireless energy to be obtained from their surroundings in order to achieve safe, self-sufficient and maintenance-free systems. The energy harvesting circuit is known to be an interface between piezoelectric and electro-strictive loads. A modern view of circuitry for energy harvesting is based on power conditioning principles that also involve AC-to-DC conversion and voltage regulation. Throughout the field of energy conversion, energy harvesting circuits often impose electric boundaries for devices, which are important for maximizing the energy that is harvested. The power conversion efficiency (PCE) is described as the ratio between the rectifier’s output DC power and the antenna-based RF-input power (before its passage through the corresponding network).

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Musumeci, Salvatore. "Energy Conversion Using Electronic Power Converters: Technologies and Applications". Energies 16, nr 8 (21.04.2023): 3590. http://dx.doi.org/10.3390/en16083590.

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Wang, Bo, Dun Lan, Fanyang Zeng i Wei Li. "Vibration Energy Conversion Power Supply Based on the Piezoelectric Thin Film Planar Array". Sensors 22, nr 21 (4.11.2022): 8506. http://dx.doi.org/10.3390/s22218506.

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Vibration energy harvesting has received much attention as a new type of power solution for low-power micro/nano-devices. However, VEH (vibration energy harvester) based on PVDF (polyvinylidene fluoride) piezoelectric materials have a low output power and energy conversation efficiency due to the relatively low piezoelectric constant, coupling coefficient, and dielectric constant. For this reason, we design a vibration energy conversion power supply, which consists of a VEH with a PVDF piezoelectric thin film planar array vibration structure and an energy harvesting circuit for regulating the electric energy of multiple sources. Furthermore, our solution was validated by simulations of structural dynamics in COMSOL and equivalent circuits model in Multisim. From the circuitry simulation results, the output current and the charging period increase and decrease, doubling, respectively, for each doubling of the number of array groups of films. Moreover, the solid mechanics simulation results show that the planar array structure makes the phase and amplitude of the input vibration waves as consistent as possible so that the same theoretical enhancement effect of the circuitry model is achieved. An identical experimental test was implemented with vibration conditions of 75 Hz-2.198 g. The fabricated harvester quickly charged the 22 V-0.022 F ultracapacitor bank to 5 V in 24 min. The maximum open circuit voltage and output power, respectively, were 10.4 V and 0.304 mW. This maximum charging power was 11.69 times higher than that of a single film. This special power supply can replace batteries to power low-power electronics deployed in vibrating environments, thus reducing the maintenance costs of equipment and environmental pollution rates.

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