Готові списки джерел за темами / Multiple three-phase motor drives

Добірка наукової літератури з теми "Multiple three-phase motor drives"

Автор: Grafiati
Опубліковано: 14 березня 2023

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Статті в журналах з теми "Multiple three-phase motor drives"

1

Muqorobin, Anwar, and Pekik Argo Dahono. "Study of current ripple characteristics of inverter-fed multiple three-phase AC motors." International Journal of Power Electronics and Drive Systems (IJPEDS) 13, no. 1 (March 1, 2022): 68. http://dx.doi.org/10.11591/ijpeds.v13.i1.pp68-83.

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Анотація:
The need of higher power and more reliable applications have promoted the use of multiphase alternating current (AC) drives. Mostly the motors are used in wide speed operation range. To control the motors, in the low speed region the motors are operated under pulse width modulation (PWM) mode and in the high speed region, they use square wave mode. In this paper, the current ripple characteristics of inverter-fed multiple three-phase AC motors that are operated under dual mode operation (PWM and square wave modes) are investigated. The optimal motor stator winding configuration will be optimized from the viewpoint of inverter input and motor current ripples. Six-phase motor is used as the representative of even-phase motors and nine-phase motor for odd-phase motors. It is found that nine-phase motor is better than six-phase motor if dual mode operation is desired. Experimental results are incorporated to support the analytical results.
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Vinay Kumar, C. H., G. Madhusudhana Rao, A. Raghu Ram, and 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 (July 20, 2022): 1–12. http://dx.doi.org/10.1155/2022/7001448.

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Анотація:
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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3

Shchur, Ihor, and Daniel Jancarczyk. "Electromagnetic Torque Ripple in Multiple Three-Phase Brushless DC Motors for Electric Vehicles." Electronics 10, no. 24 (December 13, 2021): 3097. http://dx.doi.org/10.3390/electronics10243097.

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Анотація:
This paper investigated an electromagnetic torque ripple level of BLDC drives with multiple three-phase (TP) permanent magnet (PM) motors for electric vehicles. For this purpose, mathematical models of PM machines of different armature winding sets-single (STP), dual (DTP), triple (TTP), and quadruple (QTP) ones of asymmetrical configuration and optimal angular displacement between winding sets were developed and corresponding computer models in the Matlab/Simulink environment were created. In conducted simulation, the influence of various factors on the electromagnetic torque ripple of the multiple-TP BLDC drives was investigated—degree of modularity, magnetic coupling between armature winding sets, and drive operation in open and closed-loop control systems. Studies have shown an increase of the electromagnetic torque ripple generated by one module in the multiple TP BLDC drives with magnetically coupled winding sets, due to additional current pulsations caused by magnetic interactions between the machine modules. However, the total electromagnetic torque ripples are much lower than in similar drives with magnetically insulated winding sets. Compared with the STP BLDC drive, the multiple TP BLDC drives with the same output parameters showed a reduction of the electromagnetic torque ripple by 27.6% for the DTP, 32.3% for the TTP, and 34.0% for the QTP BLDC drive.
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4

dos Santos, E. C., C. B. Jacobina, M. Beltrao de Rossiter Correa, and A. C. Oliveira. "Generalized Topologies of Multiple Single-Phase Motor Drives." IEEE Transactions on Energy Conversion 25, no. 1 (March 2010): 90–99. http://dx.doi.org/10.1109/tec.2009.2035107.

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Foti, Salvatore, Antonio Testa, Salvatore De Caro, Tommaso Scimone, Giacomo Scelba, and Giuseppe Scarcella. "Multi-Level Open End Windings Multi-Motor Drives." Energies 12, no. 5 (March 5, 2019): 861. http://dx.doi.org/10.3390/en12050861.

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Анотація:
A multi-level open-end winding converter topology for multiple-motor drives is presented featuring a main multi-level inverter processing the power delivered to the motors and an active filter based on an auxiliary two-level inverter. The main inverter operates at the fundamental frequency in order to achieve low switching power losses, while the active filter is Pulse Width Modulation (PWM) operated to suitably shape the motor currents. The proposed configuration features less phase current distortion than conventional multi-level inverters operating at the fundamental frequency, while achieving a higher efficiency compared to PWM multi-level inverters. Experimental results confirm the effectiveness of such a configuration on both multiple motors-single converter and multiple motor-multiple converter drives.
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6

Jedryczka, Cezary. "Comparative analysis of the three- and six-phase fractional slot concentrated winding permanent magnet machines." COMPEL - The international journal for computation and mathematics in electrical and electronic engineering 36, no. 3 (May 2, 2017): 811–23. http://dx.doi.org/10.1108/compel-09-2016-0431.

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Анотація:
Purpose The purpose of this paper is to analyse and compare the functional parameters of three- and six-phase permanent magnet synchronous motors (PMSM) with fractional-slot concentrated windings (FSCW). Design/methodology/approach The investigations are focused on the comparison of the distortions of back electromotive force (emf) and magnetomotive force (mmf) waveforms, as well as torque ripples, radial force spatial harmonics and motor performance studies. The finite element models of the test machine and a personally developed computer code have been used to calculate motor characteristics and analyse and synthesise multiphase winding layouts, respectively. Findings Compared with the traditional three-phase PMSM designs, the proposed six-phase machines are characterized by a significantly lower content of sub-harmonics in mmf waveform distribution. Moreover, the investigated six-phase machines exhibited a higher average value of electromagnetic torque, significantly lower torque ripples and a reduced value of low-order harmonics of the radial component of the electromagnetic force in the air-gap of the machine. Originality/value The analyses presented in this paper show that six-phase PMSM with FSCWs are advantageous to their counterpart three-phase machines. Specifically, they are more suited to working with multiple drives supplying a segmented winding system while simultaneously offering higher performance. This suitability to the use of a multi-drive supply for one motor offers flexibility and cost reduction while increasing the fault tolerance of a power train system.
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Chen, Chien-Hsu, Hsiu-Ming Wu, and Yue-Feng Lin. "Stator flux oriented multiple sliding-mode speed control design of induction motor drives." Advances in Mechanical Engineering 13, no. 5 (May 2021): 168781402110217. http://dx.doi.org/10.1177/16878140211021734.

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Анотація:
Due to superior robustness characteristic of sliding-mode control techniques, this study proposes a multiple sliding-mode control (MSMC) strategy based on the stator flux oriented vector scheme for speed control of three-phase AC induction motor (IM) drives in the presence of an external disturbance and uncertainties. At first, the dynamic model of a three-phase IM drive is transformed into two-axe orthogonal model (i.e. d and q axes) in the synchronously rotating frame so that vector control can be applied. Then, based on the stator flux oriented scheme (i.e. zero stator flux at q-axis and constant at d-axis), the proposed MSMC causes mechanical angular speed and stator current at q-axis reach toward predefined sliding surfaces. Moreover, stator flux and current at d-axis are respectively indirect and direct controlled such that tracking errors approach toward designed sliding surfaces. The closed-loop stability of the proposed MSMC is proved to possess uniformly ultimately bounded (UUB) performance by Lyapunov stability criteria. Furthermore, the simulation results reveal that the proposed MSMC strategy has a high level of robustness despite addition of an external load and random uncertainties on system parameters. In the meantime, the simulations for comparing the baseline controller (i.e. conventional PI control) are also conducted to verify the superiority of the proposed control scheme.
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Jedryczka, Cezary, Wojciech Szelag, and Zbigniew Jerry Piech. "Multiphase permanent magnet synchronous motors with fractional slot windings." COMPEL - The international journal for computation and mathematics in electrical and electronic engineering 35, no. 6 (November 7, 2016): 1937–48. http://dx.doi.org/10.1108/compel-03-2016-0120.

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Анотація:
Purpose The purpose of this paper is to investigate advantages of multiphase permanent magnet synchronous motors (PMSM) with fractional slot concentrated windings (FSCW). The investigation is based on comparative analysis and assessment of FSCW PMSM wound as 3, 6, 9 and 12 phase machines suited for low speed applications. Design/methodology/approach The investigations are focussed on distortions of back electromotive (emf) and magnetomotive force (mmf) with the torque ripples and motors’ performance taken into account. The finite element models with the aid of customized computer code have been adopted for motor winding design and back emf, mmf and motor performance analyses. Findings The novel multiphase winding layouts were found to offer lower content of sub-harmonics in the mmf waveforms compared with the traditional three-phase machine designs. Moreover, the investigated multiphase machines exhibited higher average value of the electromagnetic torque, while the multiphase PMSM machines with FSCW were further characterized by significantly lower torque pulsations. Originality/value The analyses presented in this paper demonstrate that PMSM with FSCW are advantageous to their counterpart three-phase machines. Specifically, they offer higher performance and are more suitable to work with multiple drives supplying segmented winding system. This ability of using multi-drive supply for one motor offers flexibility and cost reduction while increasing fault tolerant power train system.
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Han, Shouyi, Kaikai Diao, and Xiaodong Sun. "Overview of multi-phase switched reluctance motor drives for electric vehicles." Advances in Mechanical Engineering 13, no. 9 (September 2021): 168781402110451. http://dx.doi.org/10.1177/16878140211045195.

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Анотація:
Switched reluctance motor (SRM) provide a potential candidate for electric vehicle (EV) applications due to rigid structure, potentially low production cost, the absence of permanent magnets, excellent power-speed characteristics, and high reliability and robustness. This paper aims to review the current research on the design, winding topologies, converter topologies, and control methods of switched reluctance motors (SRMs). Torque ripple and vibration are the main drawbacks of SRMs, which constrain their application. To conquer these drawbacks, multi-phase SRMs (MSRMs), optimum structure, and control methods of SRMs have been utilized over the past decades. In this paper, MSRMs with multiple combinations of stator/rotor poles and winding arrangements are investigated. Different converter topologies are compared, and a full-bridge converter is suitable for SRMs used in EVs. Torque sharing function, direct torque control, and direct instantaneous torque control are the main control methods to reduce the torque ripple of SRMs, which have been comprehensively summarized.
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Rathore, Vishal, and Krishna Bihari Yadav. "Mathematical Modeling and Numerical Analysis of SPIM Drive Using Modified SVPWM Technique." ECTI Transactions on Electrical Engineering, Electronics, and Communications 20, no. 2 (June 21, 2022): 152–62. http://dx.doi.org/10.37936/ecti-eec.2022202.246877.

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Анотація:
This paper presents a modified space-vector pulse width modulation (SVPWM) technique for a five-level inverter that provides complete control over the multiple space-vector voltages of a six-phase inverter. This technique involves splitting six phases into two three-phase five-level inverters connected in parallel. A six-phase induction motor (SPIM) drive with a distributed neutral is considered as the load. This paper also presents a comparative analysis between the proposed and conventional SVPWM inverter-fed SPIM drives. To investigate the analytical developments and voltage limits, MATLAB/Simulink environment was used in this study. A prototype was developed in the laboratory for analyzing the harmonic components of the phase voltages and currents. The efficacy of the proposed technique was validated by means of comprehensive experiments, and the results discussed herein.
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Більше джерел

Дисертації з теми "Multiple three-phase motor drives"

1

RUBINO, SANDRO. "High Performance Control Techniques for Multiphase eDrives." Doctoral thesis, Politecnico di Torino, 2019. http://hdl.handle.net/11583/2732871.

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2

Rajamani, Haile-Selassie. "High speed, three-phase induction motor drives for domestic appliances." Thesis, University of Cambridge, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.627054.

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3

Li, Yong. "Unified zero-current-transition techniques for high-power three-phase PWM inverters." Diss., Virginia Tech, 2002. http://hdl.handle.net/10919/26843.

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Анотація:
This dissertation is devoted to a unified and comprehensive study of zero-current-transition (ZCT) soft-switching techniques for high-power three-phase PWM inverter applications. Major efforts in this study are as follows: 1) Conception of one new ZCT scheme and one new ZCT topology; 2) Systematic comparison of a family of ZCT inverters; 3) Design, implementation and experimental evaluation of two 55-kW prototype inverters for electric vehicle (EV) motor drives that are developed based on the proposed ZCT concepts; and 4) Investigation of the ZCT concepts in megawatts high-frequency power conversions. The proposed ZCT techniques are also applicable to three-phase power-factor-correction (PFC) rectifiers. In order to minimize switching losses, this work first proposes a new control scheme for an existing three-phase ZCT inverter circuit that uses six auxiliary switches. The proposed scheme, called the six-switch ZV/ZCT, enables all main switches, diodes and auxiliary switches to be turned off under zero-current conditions, and in the meantime provides an opportunity to achieve zero-voltage turn-on for the main switches. Meanwhile, it requires no modification to normal PWM algorithms. Compared with existing ZCT schemes, the diode reverse-recovery current is reduced significantly, the switching turn-on loss is reduced by 50%, the resonant capacitor voltage stress is reduced by 30%, and the current and thermal stresses in the auxiliary switches are evenly distributed. However, a big drawback of the six-switch ZV/ZCT topology, as well as of other types of soft-switching topologies using six auxiliary switches, is the high cost and large space associated with the auxiliary switches. To overcome this drawback, this work further proposes a new three-phase ZCT inverter topology that uses only three auxiliary switches-- the three-switch ZCT. The significance of the proposed three-switch ZCT topology is that, among three-phase soft-switching inverters developed so far, this is the only one that uses fewer than six auxiliary switches and still has the following three features: 1) soft commutation for all main switches, diodes and auxiliary switches in all operation modes; 2) no modification to normal PWM algorithms; and 3) in practical implementations, no need for extra resonant current sensing, saturable cores, or snubbers to protect the auxiliary switches. The proposed six-switch ZV/ZCT and three-switch ZCT inverters, together with existing ZCT inverters, constitute a family of three-phase ZCT inverters. To explore the fundamental properties of these inverters, a systematic comparative study is conducted. A simplified equivalent circuit is developed to unify common traits of ZCT commutations. With the visual aid of state planes, the evolution of the family of ZCT inverters is examined, and their differences and connections are identified. Behaviors of individual inverters, including switching conditions, circulating energy, and device/component stresses, are compared. Based on the proposed six-switch ZV/ZCT and three-switch ZCT techniques, two 55-kW prototype inverters for EV traction motor drives have been built and tested to the full-power level with a closed-loop controlled induction motor dynamometer. The desired ZCT soft-switching features are realized together with motor drive functions. A research effort is carried out to develop a systematic and practical design methodology for the ZCT inverters, and an experimental evaluation of the ZCT techniques in the EV motor drive application is conducted. The design approach integrates system optimization with characterizations of the main IGBT device under the ZCT conditions, selection, testing and characterization of the auxiliary devices, design and selection of the resonant inductors and capacitors, inverter loss modeling and numerical analysis, system-level operation aspects, and layout and parasitic considerations. Different design aspects between these two ZCT inverters are compared and elaborated. The complexity of the 55-kW prototype implementations is compared as well. Efficiencies are measured and compared under a group of torque/speed points for typical EV drive cycles. Megawatts high-frequency power conversion is another potential application of the ZCT techniques. The integrated gate commutated thyristor (IGCT) device is tested and characterized under the proposed six-switch ZV/ZCT condition, and the test shows promising results in reducing switching losses and stresses. Improvements in the IGCT switching frequency and simplification of the cooling requirements under ZCT operations are discussed. In addition, a generalized ZCT cell concept is developed based on the proposed three-switch ZCT topology. This concept leads to the discovery of a family of simplified multilevel soft-switching inverters that reduce the number of auxiliary switches by half, and still maintain desirable features.
Ph. D.
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4

Elwakil, Ehab. "A new converter topology for high-speed high-starting-torque three-phase switched reluctance motor drive system." Thesis, Brunel University, 2009. http://bura.brunel.ac.uk/handle/2438/3009.

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Анотація:
Switched reluctance motor (SRM) has become a competitive selection for many applications of electric machine drive systems recently due to its relative simple construction and its robustness. The advantages of those motors are high reliability, easy maintenance and good performance. The absence of permanent magnets and windings in rotor gives possibility to achieve very high speeds (over 10000 rpm) and turned SRM into perfect solution for operation in hard conditions like presence of vibrations or impacts. Such simple mechanical structure greatly reduces its price. Due to these features, SRM drives are used more and more into aerospace, automotive and home applications. The major drawbacks of the SRM are the complicated algorithm to control it due to the high degree of nonlinearity, also the SRM has always to be electronically commutated and the need of a shaft position sensor to detect the shaft position, the other limitations are strong torque ripple and acoustic noise effects.
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5

Leandro, Eduardo [UNESP]. "Um novo sistema de refrigeração com controle de temperatura, compressor aberto, máquina de indução trifásica com velocidade variável e correção ativa do fator de potência do estágio de entrada." Universidade Estadual Paulista (UNESP), 2006. http://hdl.handle.net/11449/87222.

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Made available in DSpace on 2014-06-11T19:22:35Z (GMT). No. of bitstreams: 0 Previous issue date: 2006-09-25Bitstream added on 2014-06-13T19:26:47Z : No. of bitstreams: 1 leandro_e_me_ilha.pdf: 1745578 bytes, checksum: 2db70f1465f9f7258fdbcda3cdebf72c (MD5)
Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
Este trabalho apresenta uma nova proposta para sistema de refrigeração com controle dinâmico de temperatura, operando com estrutura de compressor aberto, acionado por motor de indução trifásico com velocidade variável, e estágio de entrada retificador com correção ativa do fator de potência. O estágio de entrada é composto por um retificador Boost monofásico com elevado fator de potência, com duas células entrelaçadas, operando no modo de condução crítica, empregando técnica de comutação não dissipativa e controlado por dispositivo FPGA, associado a um estágio de saída inversor de dois níveis convencional trifásico à IGBT, o qual é controlado por um Processador Digital de Sinais (DSP - Digital Signal Processor). A técnica de comutação não dissipativa para o estágio de entrada é baseada em células ZCS (Zero-current-switching). As principais características do retificador incluem a redução da ondulação da corrente de entrada, redução da ondulação da tensão de saída retificada, utilização de componentes com reduzidos esforços, reduzido volume do filtro de entrada para Interferências Eletromagnéticas (EMI - Electromagnetic Interference), elevado Fator de Potência (FP) e reduzida Distorção Harmônica Total (DHT) da corrente de entrada, atendendo os limites da norma IEC61000-3-2. O controle digital para o estágio de saída inversor foi desenvolvido usando duas diferentes técnicas, incluindo a técnica convencional controle escalar Volts/Hertz (V/Hz) e o controle Vetorial com Orientação pelo Fluxo do estator, com o propósito de verificar a aplicabilidade e a performance dos controles digitais propostos, para o controle contínuo da temperatura, aplicados a um protótipo de sistema de refrigeração.
This work presents a new proposal for refrigeration systems with dynamic control of temperature, working with structure of open compressor, driving a three-phase induction motor with variable speed, and input rectifier with active power factor correction. The proposed system is composed of a single-phase high-power-factor boost rectifier, with two cells in interleaved connection, operating in critical conduction mode, and employing a softswitching technique, controlled by a Field Programmable Gate Array (FPGA), associated with a conventional three-phase IGBT bridge inverter (VSI - Voltage Source Inverter), controlled by a Digital Signal Processor (DSP). The soft-switching technique for the input stage is based on zero-current-switching (ZCS) cells. The rectifier s features include reduction in input current ripple, reduction in output voltage ripple, use of low stress devices, low volume for the EMI input filter, high input power factor (PF), and low total harmonic distortion (THD) in the input current, in compliance with the IEC61000-3-2 standards. The digital controller for the output stage inverter has been developed using two different techniques, the conventional Voltage-Frequency control (scalar V/Hz control), and a simplified stator oriented vector control, in order to verify the feasibility and performance of the proposed digital controls, for continuous temperature control, applied at a refrigerator prototype.
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6

Leandro, Eduardo. "Um novo sistema de refrigeração com controle de temperatura, compressor aberto, máquina de indução trifásica com velocidade variável e correção ativa do fator de potência do estágio de entrada /." Ilha Solteira : [s.n.], 2006. http://hdl.handle.net/11449/87222.

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Анотація:
Resumo: Este trabalho apresenta uma nova proposta para sistema de refrigeração com controle dinâmico de temperatura, operando com estrutura de compressor aberto, acionado por motor de indução trifásico com velocidade variável, e estágio de entrada retificador com correção ativa do fator de potência. O estágio de entrada é composto por um retificador Boost monofásico com elevado fator de potência, com duas células entrelaçadas, operando no modo de condução crítica, empregando técnica de comutação não dissipativa e controlado por dispositivo FPGA, associado a um estágio de saída inversor de dois níveis convencional trifásico à IGBT, o qual é controlado por um Processador Digital de Sinais (DSP - Digital Signal Processor). A técnica de comutação não dissipativa para o estágio de entrada é baseada em células ZCS (Zero-current-switching). As principais características do retificador incluem a redução da ondulação da corrente de entrada, redução da ondulação da tensão de saída retificada, utilização de componentes com reduzidos esforços, reduzido volume do filtro de entrada para Interferências Eletromagnéticas (EMI - Electromagnetic Interference), elevado Fator de Potência (FP) e reduzida Distorção Harmônica Total (DHT) da corrente de entrada, atendendo os limites da norma IEC61000-3-2. O controle digital para o estágio de saída inversor foi desenvolvido usando duas diferentes técnicas, incluindo a técnica convencional controle escalar Volts/Hertz (V/Hz) e o controle Vetorial com Orientação pelo Fluxo do estator, com o propósito de verificar a aplicabilidade e a performance dos controles digitais propostos, para o controle contínuo da temperatura, aplicados a um protótipo de sistema de refrigeração.
Abstract: This work presents a new proposal for refrigeration systems with dynamic control of temperature, working with structure of open compressor, driving a three-phase induction motor with variable speed, and input rectifier with active power factor correction. The proposed system is composed of a single-phase high-power-factor boost rectifier, with two cells in interleaved connection, operating in critical conduction mode, and employing a softswitching technique, controlled by a Field Programmable Gate Array (FPGA), associated with a conventional three-phase IGBT bridge inverter (VSI - Voltage Source Inverter), controlled by a Digital Signal Processor (DSP). The soft-switching technique for the input stage is based on zero-current-switching (ZCS) cells. The rectifier’s features include reduction in input current ripple, reduction in output voltage ripple, use of low stress devices, low volume for the EMI input filter, high input power factor (PF), and low total harmonic distortion (THD) in the input current, in compliance with the IEC61000-3-2 standards. The digital controller for the output stage inverter has been developed using two different techniques, the conventional Voltage-Frequency control (scalar V/Hz control), and a simplified stator oriented vector control, in order to verify the feasibility and performance of the proposed digital controls, for continuous temperature control, applied at a refrigerator prototype.
Orientador: Carlos Alberto Canesin
Coorientador: Flávio Alessandro Serrão Gonçalves
Banca: Fabio Toshiaki Wakabayashi
Banca: João Onofre Pereira Pinto
Mestre
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7

Aboelhassan, Mustafa Osman Elrayah. "Robustní řízení synchronního stroje s permanentními magnety a spínaným tokem." Doctoral thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2013. http://www.nusl.cz/ntk/nusl-233605.

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Анотація:
Je jasné, že nejúspěšnější konstrukce zahrnuje postup vícefázového řízení, ve kterém každá fáze může být považována za samostatný modul. Provoz kterékoliv z jednotek musí mít minimální vliv na ostatní, a to tak, že v případě selhání jedné jednotky ostatní mohou být v provozu neovlivněny. Modulární řešení vyžaduje minimální elektrické, magnetické a tepelné ovlivnění mezi fázemi řízení (měniče). Synchronní stroje s pulzním tokem a permanentními magnety se jeví jako atraktivní typ stroje, jejíž přednostmi jsou vysoký kroutící moment, jednoduchá a robustní konstrukce rotoru a skutečnost, že permanentní magnety i cívky jsou umístěny společně na statoru. FS-PMSM jsou poměrně nové typy střídavého stroje stator-permanentní magnet, které představují významné přednosti na rozdíl od konvenčních rotorů - velký kroutící moment, vysoký točivý moment, v podstatě sinusové zpětné EMF křivky, zároveň kompaktní a robustní konstrukce díky umístění magnetů a vinutí kotvy na statoru. Srovnání výsledků mezi FS-PMSM a klasickými motory na povrchu upevněnými PM (SPM) se stejnými parametry ukazuje, že FS-PMSM vykazuje větší vzduchové mezery hustoty toku, vyšší točivý moment na ztráty v mědi, ale také vyšší pulzaci díky reluktančnímu momentu. Pro stroje buzené permanentními magnety se jedná o tradiční rozpor mezi požadavkem na vysoký kroutící moment pod základní rychlostí (oblast konstantního momentu) a provozem nad základní rychlostí (oblast konstantního výkonu), zejména pro aplikace v hybridních vozidlech. Je předložena nová topologie synchronního stroje s permanentními magnety a spínaným tokem odolného proti poruchám, která je schopná provozu během vinutí naprázdno a zkratovaného vinutí i poruchách měniče. Schéma je založeno na dvojitě vinutém motoru napájeném ze dvou oddělených vektorově řízených napěťových zdrojů. Vinutí jsou uspořádána takovým způsobem, aby tvořila dvě nezávislé a oddělené sady. Simulace a experimentální výzkum zpřesní výkon během obou scénářů jak za normálního provozu, tak za poruch včetně zkratových závad a ukáží robustnost pohonu za těchto podmínek. Tato práce byla publikována v deseti konferenčních příspěvcích, dvou časopisech a knižní kapitole, kde byly představeny jak topologie pohonu a aplikovaná řídící schémata, tak analýzy jeho schopnosti odolávat poruchám.
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8

Lee, Rong-Neng, and 李榮能. "Simulation of AC drives in three phase induction motor." Thesis, 1994. http://ndltd.ncl.edu.tw/handle/41819435131761426279.

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Анотація:
碩士
國立中山大學
電機工程研究所
82
At present, the induction motor is the most popular electric machinery. There are considerably control technologies have been developed.This thesis deals with most popular drivers in the present market and the induction motor for establishing their mathematical models. Meanwhile , the characteristics of the drivers also have been simulated in the thesis. From the studies , we can have a better understanding of the effect of the driver equipment and choose adequate power electronics. To avoid disadvantageous effects with respect to the inverter to damage power electronics as a result of the induction motor fault, use data provided from the simulation to reduce the power failure probability or design appropriate protection devices. To make use of the digital simulation of the voltage source inverter, including the six-step、 the square wave PWM、 sinusoid wave PWM and optimal PWM , this thesis presents the analysis of the induction motor under abnormal operation conditions. In addition, built the vector control mathematical models and simulate the good dynamics characteristic, including under- rating speed constant torque operation and over-rating speed constant power operation of the induction motor. The main purpose of using software simulation is to reduce the time of the development of the hardware、save the capital and avoid waste of money and human resource.
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9

Lin, Jia-Huei, and 林家輝. "Current Harmonics Improvement of Three-phase Permanent-magnet Synchronous Motor Drives." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/hr3tf4.

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Анотація:
碩士
國立臺灣科技大學
電機工程系
104
The thesis focuses on the development of low total harmonic distortion (THD) of current for a six-leg inverter for three-phase permanent-magnet synchronous motor (PMSM) drives. The power circuit of six-leg three-phase inverter will provide independent operation for each phase of PMSM to raise the utilization factor of dc-link voltage. In addition, two types of current harmonics mitigation control are proposed: one for normal operation and the other for the case when single phase winding fault occurs. The former uses current prediction to suppress the zero-axis current, while for the latter, adjusting the phase angle difference of the other two windings to 60 degrees and introducing zero-axis back electro-motive-force compensation will reduce THD of current as well as torque ripple under unbalanced condition. Finally, an auxiliary generator is used to measure the position and speed of the rotor to facilitate the coordinate transformation of feedback current for current and speed closed-loop control. In this thesis, Matlab/Simulink is used to simulate the proposed PMSM drive including current and speed closed-loop control, fault tolerance control as well as harmonic mitigation. The digital signal processor, TMS320F28069, is adopted as the control core and the program is compiled by C language, thereby reducing the circuit components and enhancing the reliability. Experimental evaluation for current harmonics mitigation control is conducted at 180 rpm with a load of 2 N-m. Under normal operation, the THD of current is reduced from 10.43% to 1.81%. Whereas, when single phase winding fault occurs, the THD of current is reduced from 4.46 % to 2.96 %. Besides, peak to peak value of torque is dropped from 0.68 N-m to 0.66 N-m. The experimental results show the feasibility of the proposed current harmonic control strategy.
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10

Pan, Chien-Lun, and 潘健倫. "Development of Three-Phase Induction Motor Drives with Low DC-Link Capacitance." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/5zz9b9.

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Анотація:
碩士
國立臺灣科技大學
電機工程系
94
This thesis focuses on the design and implementation of a speed control system for three-phase induction motors. The full-bridge diode rectifier is used to convert the utility to dc source. The control of pulse-width modulation with compensation is completed by the feedback of dc-link voltage. It thus can not only improve the current harmonics of inverter but also reduce dc-link capacitance and volume. Besides, the speed control range of three-phase induction motor driver is investigated by detecting the minimum value of dc-link voltage to avoid torque and speed fluctuation when utility voltage varies. According to the feedback of dc-link voltage, the compensation of pulse-width modulation and field-weakening control are conducted to make the motor operate steadily in constant torque and constant horse-power regions. In this thesis, closed-loop speed control of a three-phase induction motor with dc-link voltage compensation are given using constant flux and indirect rotor flux oriented controls. A high-performance, low-cost digital signal processor, TMS320LF2407A, is used as the control core. The control of motor and inverter is accomplished by software for cost reduction. A prototype of 400W three-phase induction motor with speed control system is developed. The input is three-phase, 60Hz and 110V.The dc-link capacitor is 22uF. The experimental data show that the motor runs smoothly as expected.
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Книги з теми "Multiple three-phase motor drives"

1

Kong, C. S. Computation of multiple prestriking transients in three-phase cable connected motor systems. Manchester: UMIST, 1991.

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2

A Fault-Tolerant Dual Three-Level Inverter Configuration for Multipole Induction Motor Drive with Reduced Torque Ripple. Kanyakumari, India: ASDF International, 2017.

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Частини книг з теми "Multiple three-phase motor drives"

1

Zha, Chencheng, Bo Wang, and Wenhan Xu. "Electromagnetic Thermal Coupled Analysis of a Multiple Three-Phase Fractional Slot Concentrated Winding Fault-Tolerant Motor." In Lecture Notes in Electrical Engineering, 68–79. Singapore: Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-99-0553-9_9.

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2

V. Stankovic, Ana. "Unbalanced Operation of Three-Phase Boost Type Rectifiers." In Handbook of Automotive Power Electronics and Motor Drives, 273–94. CRC Press, 2017. http://dx.doi.org/10.1201/9781420028157-15.

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3

Stankovic, Ana. "Unbalanced Operation of Three-Phase Boost Type Rectifiers." In Handbook of Automotive Power Electronics and Motor Drives, 273–94. CRC Press, 2005. http://dx.doi.org/10.1201/9781420028157.ch13.

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4

Visinka, Radim. "Energy efficient three-phase AC motor drives for appliance and industrial applications." In Green Electronics/Green Bottom Line, 29–42. Elsevier, 2000. http://dx.doi.org/10.1016/b978-075069993-8/50156-5.

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5

Kumar, K. Vinoth, and Prawin Angel Michael. "Analysis of Sidebands Failures in Asynchronous Drives." In Strategic Applications of Measurement Technologies and Instrumentation, 62–76. IGI Global, 2019. http://dx.doi.org/10.4018/978-1-5225-5406-6.ch004.

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This chapter deals with the diagnosis of induction motors (IM) with the so-called motor current signature analysis (MCSA). The MCSA is one of the most efficient techniques for the detection and the localization of electrical and mechanical failures, in which faults become apparent by harmonic components around the supply frequency. This chapter presents a summary of the most frequent faults and its consequences on the stator current spectrum of an IM. A three-phase IM model was used for simulation taking into account in one hand the normal healthy operation and in the other hand the broken rotor bars, the shorted turns in the stator windings, the voltage unbalance between phases of supply, and the abnormal behavior of load. The MCSA is used by many authors in literature for faults detection of IM. The major contribution of this work is to prove the efficiency of this diagnosis methodology to detect different faults simultaneously, in normal and abnormal functional conditions. The results illustrate good agreement between both simulated and experimental results.
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6

Vyas, Megha, and Shripati Vyas. "Matrix Converter." In Advances in Environmental Engineering and Green Technologies, 219–44. IGI Global, 2022. http://dx.doi.org/10.4018/978-1-6684-4012-4.ch008.

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The matrix converter (MC) has recently attracted significant attention among researchers because of its applications in wind energy conversion, military power supplies, induction motor drives, etc. Recently, different MC topologies have been proposed and developed which have their own advantages and disadvantages. Matrix converter can be classified as a direct and indirect structure. This chapter aims to give a general description of the basic features of a three phase to three phase matrix converters in terms of performance and of technological issues. Matrix converter is a direct AC-AC converter topology that is able to directly convert energy from an AC source to an AC load without the need of a bulky and limited lifetime energy storage element. AC-AC topologies receive extensive research attention for being an alternative to replace traditional AC-DC-AC converters in the variable voltage and variable frequency AC drive applications.
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Тези доповідей конференцій з теми "Multiple three-phase motor drives"

1

Rubino, Sandro, Radu Bojoi, Davide Cittanti, and Luca Zarri. "Decoupled Torque Control of Multiple Three-Phase Induction Motor Drives." In 2019 IEEE Energy Conversion Congress and Exposition (ECCE). IEEE, 2019. http://dx.doi.org/10.1109/ecce.2019.8912502.

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2

Rubino, Sandro, Radu Bojoi, Emil Levi, and Obrad Dordevic. "Vector Control of Multiple Three-Phase Permanent Magnet Motor Drives." In IECON 2018 - 44th Annual Conference of the IEEE Industrial Electronics Society. IEEE, 2018. http://dx.doi.org/10.1109/iecon.2018.8591146.

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3

Palacios, R. H. C., W. F. Godoy, A. Goedtel, I. N. da Silva, D. Morinigo-Sotelo, and O. Duque-Perez. "Time domain diagnosis of multiple faults in three phase induction motors using inteligent approaches." In 2017 IEEE 11th International Symposium on Diagnostics for Electrical Machines, Power Electronics and Drives (SDEMPED). IEEE, 2017. http://dx.doi.org/10.1109/demped.2017.8062338.

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4

Yang, H., S. Ademi, and R. A. McMahon. "Comparative Study on Multiple Three-Phase Permanent Magnet Motors in Fault Tolerant Electric Power Steering Application." In The 10th International Conference on Power Electronics, Machines and Drives (PEMD 2020). Institution of Engineering and Technology, 2021. http://dx.doi.org/10.1049/icp.2021.0983.

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5

Wang, Daohan, Chen Peng, Xiaojian Yi, Can Huang, and Xiuhe Wang. "Multiple-phase Excitation Control of Linear Switched Reluctance Motor with Segmented Secondary Driving System." In 2021 13th International Symposium on Linear Drives for Industry Applications (LDIA). IEEE, 2021. http://dx.doi.org/10.1109/ldia49489.2021.9505986.

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6

Freire, Nuno M. A., Jorge O. Estima, and A. J. Marques Cardoso. "Multiple open-circuit fault diagnosis in voltage-fed PWM motor drives using the current Park's Vector phase and the currents polarity." In 2011 8th IEEE International Symposium on Diagnostics for Electric Machines, Power Electronics and Drives - (SDEMPED 2011). IEEE, 2011. http://dx.doi.org/10.1109/demped.2011.6063654.

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7

Kolks, Giacomo, and Jürgen Weber. "Symmetric Single Rod Cylinders With Variable Piston Area? A Comprehensive Approach to the Right Solution." In BATH/ASME 2018 Symposium on Fluid Power and Motion Control. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/fpmc2018-8810.

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In contrast to rotational hydraulic displacement units, such as pumps or motors, conventional hydraulic cylinder actuators do not allow a continuous variation of their displacement quantity: the piston area is regarded constant. In order to adapt to varying load and velocity requirements in a load cycle under torque restrictions of the driving motor, cylinder drives often implement pumps with variable displacement. In this paper, cylinders with discretely variable effective piston area by means of variable circuitry of multi-chamber cylinders are discussed. Hydraulic symmetry or constant asymmetry of the hydraulic cylinder are traits of the cylinder that are required to fit the cylinder to pump structures for closed-circuit displacement control, as given in electro-hydrostatic compact drives (ECD). A methodology to generate all possible solutions of variable area cylinders under the constraint of ECD requirements is proposed. A comprehensive description of the solution space is given, based on combinatorics and solution of equation systems. The methodology dealing with abstract cylinder areas is backed up by a general approach to describe the mechanical cylinder design space to combine multiple cylinder areas in one structural unit. Examples for design of three and four area cylinders are given and results are discussed. The paper concludes with the development of a demonstrator design to allow experimental validation in a subsequent step.
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8

Li, Ho-Lung, Chris G. Geisler, David M. Wootton, and Jack G. Zhou. "A New Flexible and Multi-Purpose System Design for 3-Dimensional Printing." In ASME 2011 International Manufacturing Science and Engineering Conference. ASMEDC, 2011. http://dx.doi.org/10.1115/msec2011-50176.

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A new type of Solid freeform fabrication (SFF) machine based on Automatically Programmed Tools (APT) language has been developed to construct hydrogel scaffolds and porous structures. The system comprises three servo motors, three motor drives, three appropriate optical linear encoders, digital/analogue input and output interfaces, an air pressure control system, a UV light device, a hot plate, and a nozzle with dispensing controller. In this study, the system was connected into a PC to act as a high-performance servo controller for monitoring the control of a three axis x-y-z moving arms. The printing procedures were repeated layer-by-layer to form a 3D structure. A biocompatible and thermosensitive material, PEG-PLGA-PEG triblock copolymer, has been printed by this new three-dimensional direct printing machine and the experimental results are discussed with respect to potential applications. Our novel SFF printing system has some advantages over other commercial SFF machines, which includes: 1. Changeable printing nozzles for materials with different viscosities. 2. Re-constructible system setup for different printing purposes. 3. Capability for heterogeneous printing. 4. User-friendly software development 5. Economic system design. The study of the hardware and software and their integration are described and its new heterogeneous printing algorithm is discussed for multiple purpose uses. The integrated software has been developed to link all components of the control system together and it is easy to adapt to different applications.
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Nordin, Mohamad Haikal, Lai Keng Looi, Pete Slagel, Mohamad Hafiz Othman, Abdul Razak Affandi, and Mohamad Syahmi Zurhan. "Minimising Torsional Vibration Due to Stick Slip Using Z Technology for Drilling Energy Efficiency in Multiple Hard Stringers Field in Offshore Malaysia." In International Petroleum Technology Conference. IPTC, 2021. http://dx.doi.org/10.2523/iptc-21841-ms.

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Abstract Field T is well known with its multiple layers of hard stringers that can go up to 25 ksi UCS at certain intervals, predominantly in 12-1/4" and 8-1/2" hole section. This can lead to stick-slip problem whereby the drill bit momentarily stalls due to high static friction, while the drill string keeps rotating. As a result, torque will buildup in pipe until it overcomes the friction at the bit, resulting in the drill pipe unwinding itself. Over time, this issue results in reduced drilling efficiency (i.e. lower ROP), eventually causing damage to the bit or worse, twisting off the BHA, which translates into high cost exposure to the Operator. During the exploration phase, the Operator required on average, 4 to 7 bit trips to drill 12-1/4" hole section and 2 to 4 trips were required to drill 8-1/2" hole section. The most reported reason to pull out of the hole were, BHA change out, downhole tool failure (DTF) and low rate of penetration (ROP). The bits’ inner & outer cutters were also reported to be damaged with dull grading as high as wear value of 7 or 8. Z technology is a torsional vibration mitigation system that uses wide band impedance (Z) matching concept that aims to absorb all torque waves arriving at top drive by overcoming inertia of motor & gearbox. The Z Technology changes the conventional hard boundary condition of a standard top drive (TD) RPM controller that is "stiff" (constant RPM) which results in full reflection of all torsional waves. A "stiff" TD control system leads to growth of standing waves (A combination of TD constant RPM & stick-slip "unwind" RPM) in the string which eventually may lead to torsional vibrations to the drill bit and/or motor housing/BHA. While drilling Development Phase 1B, Z Technology was seen to be effective in mitigating stick-slip. As a result, more mechanical specific energy (MSE) was available to be transmitted to the bit for formation rock removal. All three wells in the Phase 1B campaign managed to achieve the highest ROP in T field. This translated into cost savings in rig time and cost avoidance to Operator due to BHA damage. The paper will discuss the details of the Z Technology mechanism, its implementation and evaluating its effectiveness in minimizing torsional vibration due to the stick-slip issue.
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Nouira, Imen, Bassem El Badsi, and Ahmed Masmoudi. "DTC of three-switch three-phase inverter fed induction motor drives." In 2015 Tenth International Conference on Ecological Vehicles and Renewable Energies (EVER). IEEE, 2015. http://dx.doi.org/10.1109/ever.2015.7112980.

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