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28 results on '"Nguyen, Ngac Ky"'

1. Design, Analysis of a Seven-Phase Fault-Tolerant Bi-Harmonic Permanent Magnet Machine With Three Active Air Gaps for In-Wheel Traction Applications

Author

Gong, Jinlin, Wang, XiuLin, Zhao, Benteng, Tan, Fei, Semail, Eric, Nguyen, Ngac Ky, and Bracikowski, Nicolas

Abstract

For the requirements of in-wheel traction systems, a new motor is proposed based on a specific property of multiphase machines: the ability in vector control to develop smooth torque at low speeds by using simultaneously the first and third harmonics to generate p and 3p polarities. From an initial fault-tolerant seven-phase axial–flux machine with two outer axial rotors for small vehicles such as moto/scooter is born the proposed motor just by adding magnets in the cylinder closing the two 2p-pole axial rotors of initial in-wheel motor, this addition creates thus a third radial rotor with 6p poles without changing the global volume. With an increase by 51% of the torque density, this more expensive motor can be considered in comparison with the initial in-wheel motor as a modular solution. With the same volume, a higher torque for higher acceleration and slopes can be obtained. The possibility to use different polarities with a strong non-sinusoidal back-emf without torque ripples is verified in 3D-FEM simulation and in a manufactured 28 slots – 12/36 poles prototype. Experimental results are given to prove the effectiveness of the proposal.

Published
2024
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3. Comparison of five-phase, six-phase and seven-phase fault tolerant electric drives

Author

Ribiere, Antonin, Nguyen, Ngac-Ky, Semail, Eric, Espanet, Christophe, Laboratoire d’Électrotechnique et d’Électronique de Puissance - ULR 2697 (L2EP), Centrale Lille-Université de Lille-Arts et Métiers Sciences et Technologies, HESAM Université - Communauté d'universités et d'établissements Hautes écoles Sorbonne Arts et métiers université (HESAM)-HESAM Université - Communauté d'universités et d'établissements Hautes écoles Sorbonne Arts et métiers université (HESAM)-JUNIA (JUNIA), Université catholique de Lille (UCL)-Université catholique de Lille (UCL), École Nationale Supérieure d'Arts et Métiers (ENSAM), Arts et Métiers Sciences et Technologies, HESAM Université - Communauté d'universités et d'établissements Hautes écoles Sorbonne Arts et métiers université (HESAM)-HESAM Université - Communauté d'universités et d'établissements Hautes écoles Sorbonne Arts et métiers université (HESAM), and Moving Magnet Technologies (MMT)

Subjects
multiphase machine, multiphase drive, Energie électrique [Sciences de l'ingénieur], [SPI.NRJ]Engineering Sciences [physics]/Electric power, fault tolerant control, automotive steering, open-end winding
Abstract

International audience; Automotive industry is evolving towards more fault-tolerant actuators to fulfill future autonomous vehicles requirements. Critical applications such as steering or braking have to resist to fault occurrences while being low cost due to mass production market. Considering these two criteria, multiphase electric drives offer a good tradeoff between increasing the degrees of freedom and limiting system oversizing. This paper proposes to compare three multiphase electric drives for electro-hydraulic power steering for trucks: a five-phase machine and a six-phase machine both fed by a full bridge inverter (FBI), and a seven-phase machine fed by a standard half-bridge inverter (HBI). Several comparison criteria are considered in the meantime: motor, electronics, control and manufacturing parameters. Some of criteria are obtained from finite-element analysis (FEA), while others are derived from analytic formula or dynamic simulations . Criteria are evaluated for each drive and then results are discussed. In the given low-voltage high-current application, H-bridge inverter topology seems to be a promising solution. Both five-phase and six-phase present similar results. However, six-phase drive could be more interesting, as it could be brought close to standard three-phase solutions and adapted to dual-lane supply.

Published
2022

4. An approach to compare multiphase drives for automotive safety applications

Author

RIBIERE, Antonin, NGUYEN, Ngac-Ky, SEMAIL, Eric, ESPANET, Christophe, Laboratoire d’Électrotechnique et d’Électronique de Puissance - ULR 2697 (L2EP), Centrale Lille-Université de Lille-Arts et Métiers Sciences et Technologies, HESAM Université - Communauté d'universités et d'établissements Hautes écoles Sorbonne Arts et métiers université (HESAM)-HESAM Université - Communauté d'universités et d'établissements Hautes écoles Sorbonne Arts et métiers université (HESAM)-JUNIA (JUNIA), Université catholique de Lille (UCL)-Université catholique de Lille (UCL), and Moving Magnet Technologies (MMT)

Subjects
Low voltage, Energie électrique [Sciences de l'ingénieur], [SPI.NRJ]Engineering Sciences [physics]/Electric power, Permanent magnet motors, Synchronous motors, Analytical models, Inverters, Safety, Actuators
Abstract

International audience; Automotive safety applications will be soon a standard based on market evolution trends. Actuators performing safety operations, such as steering or braking, need to be more reliable with a low manufacturing cost. Multiphase drives seem to be a good alternative to actuators redundancy, as it offers greater degrees of freedom with at a limited extra cost. These drives have been studied for a while, especially in other industries such as ship propulsion or aeronautic actuator. However, comparison between multiphase drives for a given application is rare. In this paper, a methodology is proposed to evaluate several drives for a safety automotive application. Some manufacturing assumptions have been made in order to narrow the study to five, six and seven phase permanent magnet synchronous motors (PMSM). Machines have been modeled using 2-D finite elements analysis (FEA) software in order to extract their parameters which will be used in dynamic simulations. Based on the obtained results, each drive is evaluated according to defined criteria and best solutions are highlighted. Considering a low voltage high current application, full bridge inverter topologies feeding a six-phase motor seem to be a promising solution.

Published
2022

10. Sensorless Control for Non-Sinusoidal Five-phase IPMSM Based on Sliding Mode Observer

Author

Mini, Youssouf, Nguyen, Ngac Ky, Semail, Eric, Laboratoire d'Électrotechnique et d'Électronique de Puissance (L2EP) - ULR 2697, Laboratoire d’Électrotechnique et d’Électronique de Puissance - ULR 2697 [L2EP], Laboratoire d’Électrotechnique et d’Électronique de Puissance - ULR 2697 (L2EP), Centrale Lille-Haute Etude d'Ingénieurs-Université de Lille-Arts et Métiers Sciences et Technologies, HESAM Université (HESAM)-HESAM Université (HESAM), Centrale Lille-Université de Lille-Arts et Métiers Sciences et Technologies, HESAM Université - Communauté d'universités et d'établissements Hautes écoles Sorbonne Arts et métiers université (HESAM)-HESAM Université - Communauté d'universités et d'établissements Hautes écoles Sorbonne Arts et métiers université (HESAM)-JUNIA (JUNIA), and Université catholique de Lille (UCL)-Université catholique de Lille (UCL)

Subjects
[SPI]Engineering Sciences [physics], Electrical integrated drives, Back-EMF observer, Five-phase interior permanent magnet synchronous machine (FIPMSM), Sensorless control, Sliding Mode Observer (SMO), Sciences de l'ingénieur
Abstract

National audience; This paper proposes a sensorless control based on Sliding Mode Observer (SMO) for a Five-phase Interior Permanent Magnet Synchronous Machine (FIPMSM), with a consideration of the third harmonic component. Compared to the conventional three-phase machines, the third harmonic of electromotive force contains more information. Thus, in this paper, we consider the first and third harmonic components of the five-phase machine to estimate the rotor position that is necessary for the control. Simulation results of the implemented SMO are shown to verify the feasibility of the proposed sensorless control strategy

Published
2019

11. Different possibilities of multiphase drives functioning in constant power region

Author

Nguyen, Ngac Ky, Zahr, Hussein, Vu, Duc Tan, Semail, Eric, Laboratoire d’Électrotechnique et d’Électronique de Puissance - ULR 2697 (L2EP), Centrale Lille-Haute Etude d'Ingénieurs-Université de Lille-Arts et Métiers Sciences et Technologies, HESAM Université (HESAM)-HESAM Université (HESAM), Centrale Lille-Université de Lille-Arts et Métiers Sciences et Technologies, HESAM Université - Communauté d'universités et d'établissements Hautes écoles Sorbonne Arts et métiers université (HESAM)-HESAM Université - Communauté d'universités et d'établissements Hautes écoles Sorbonne Arts et métiers université (HESAM)-JUNIA (JUNIA), and Université catholique de Lille (UCL)-Université catholique de Lille (UCL)

Subjects
Energie électrique [Sciences de l'ingénieur], [SPI.NRJ]Engineering Sciences [physics]/Electric power, ComputingMilieux_MISCELLANEOUS, Multiphase drive
Abstract

International audience

Published
2018

12. Torque optimization of seven phase BLDC machines in normal and degraded modes with constraints on current and voltage

Author

VU, Duc Tan, NGUYEN, Ngac Ky, SEMAIL, Eric, DOS SANTOS MORAES, Tiago José, Laboratoire d’Électrotechnique et d’Électronique de Puissance - ULR 2697 (L2EP), Centrale Lille-Haute Etude d'Ingénieurs-Université de Lille-Arts et Métiers Sciences et Technologies, HESAM Université (HESAM)-HESAM Université (HESAM), Centrale Lille-Université de Lille-Arts et Métiers Sciences et Technologies, HESAM Université - Communauté d'universités et d'établissements Hautes écoles Sorbonne Arts et métiers université (HESAM)-HESAM Université - Communauté d'universités et d'établissements Hautes écoles Sorbonne Arts et métiers université (HESAM)-JUNIA (JUNIA), and Université catholique de Lille (UCL)-Université catholique de Lille (UCL)

Subjects
Fault-tolerant control, Analytical formulation, Energie électrique [Sciences de l'ingénieur], Current and voltage limits, [SPI.NRJ]Engineering Sciences [physics]/Electric power, Torque optimization, Seven-phase BLDC machine
Abstract

International audience; This paper proposes several easy-to-implement control strategies when seven-phase axial flux brushless DC machines with trapezoidal back electromotive forces operate in normaland faulty modes by taking into account constraints on voltage and current. The constraints are related to the converter and machine design in terms of maximum values of current andvoltage. The considered faults are cases in which one or two phases of the machine are open-circuited. Numerical computations based on analytical formulations are applied toobtain torque-speed characteristics, including the fluxweakening operation. The methods determine current references to ensure the torque optimizations while currents and voltages are within their limits. The usefulness of the methods is verified by numerical results.

Published
2018

15. Real-Time Validation of a Cascaded Model Predictive Control Technique for a Five-Phase Permanent Magnet Synchronous Machine Under Current and Voltage Limits

Author

Bermudez Guzman, Mario, Gomozov, Oleg, Kestelyn, Xavier, Nguyen, Ngac Ky, Semail, Eric, Barrero, Federico, Laboratoire d’Électrotechnique et d’Électronique de Puissance - ULR 2697 (L2EP), Centrale Lille-Haute Etude d'Ingénieurs-Université de Lille-Arts et Métiers Sciences et Technologies, HESAM Université (HESAM)-HESAM Université (HESAM), Laboratoire d’Électrotechnique et d’Électronique de Puissance - ULR 2697 [L2EP], Laboratoire d'Électrotechnique et d'Électronique de Puissance (L2EP) - ULR 2697, Centrale Lille-Université de Lille-Arts et Métiers Sciences et Technologies, HESAM Université - Communauté d'universités et d'établissements Hautes écoles Sorbonne Arts et métiers université (HESAM)-HESAM Université - Communauté d'universités et d'établissements Hautes écoles Sorbonne Arts et métiers université (HESAM)-JUNIA (JUNIA), and Université catholique de Lille (UCL)-Université catholique de Lille (UCL)

Subjects
Electronique [Sciences de l'ingénieur], Multiphase drives, Energie électrique [Sciences de l'ingénieur], Current and voltage limits, Optimal reference currents, [SPI.NRJ]Engineering Sciences [physics]/Electric power, Model Predictive Control, [SPI.TRON]Engineering Sciences [physics]/Electronics
Abstract

International audience; Multiphase machines have recently gained importance in the research community for their use in applications where high power density, wide speed range and fault-tolerant capabilities are needed. The optimal control of such drives requires to consider voltage and current constraints imposed by the power converter and the machine itself. If classical three-phase drives have been optimally controlled under such limits for a long time, the same cannot be said in the case of multiphase drives. This paper deals with this issue, where an optimal control technique based on Cascaded Model Predictive Controls (MPC) is presented for a five-phase permanent magnet synchronous machine (PMSM). A Continuous-Control-Set MPC (CCS-MPC) numerically computes optimal current references in real-time in order to exploit the maximum performance for given DC bus voltage and current limits. Then, a Finite-Control-Set MPC (FCS-MPC) is used to carry out the current control in the machine, directly applying the switching state that minimizes a cost function related to the current tracking. Obtained mixed microprocessor-based and FPGA-based real-time simulations prove the interest of the proposal, which ensures the optimal control of the multiphase drive operating under current and voltage constraints.

Published
2017

19. Commande en Mode Dégradé d'un Drive avec Deux Machines 6 phases en Série

Author

Dos Santos Moraes, Tiago José, Nguyen, Ngac Ky, Meinguet, Fabien, Guerin, Mael, Semail, Eric, Laboratoire d’Électrotechnique et d’Électronique de Puissance - ULR 2697 (L2EP), Centrale Lille-Haute Etude d'Ingénieurs-Université de Lille-Arts et Métiers Sciences et Technologies, HESAM Université (HESAM)-HESAM Université (HESAM), Laboratoire d'Électrotechnique et d'Électronique de Puissance (L2EP) - ULR 2697, Centrale Lille-Université de Lille-Arts et Métiers Sciences et Technologies, HESAM Université - Communauté d'universités et d'établissements Hautes écoles Sorbonne Arts et métiers université (HESAM)-HESAM Université - Communauté d'universités et d'établissements Hautes écoles Sorbonne Arts et métiers université (HESAM)-JUNIA (JUNIA), and Université catholique de Lille (UCL)-Université catholique de Lille (UCL)

Subjects
[SPI]Engineering Sciences [physics]
Abstract

International audience; Dans le cadre d'une commande en mode dégradé d'un entrainement comprenant deux machines polyphasées connectées en série et pilotées de façon indépendante, l'article s'intéresse à analyser la performance de l'entrainement dans le cas d'un défaut de court-circuit d'un transistor. Deux reconfigurations modifiant l'algorithme de commande ont été présentées avec les objectifs d'éliminer l'ondulation de couple et de comparer la valeur de courant crête obtenue avec chaque stratégie en vue d'obtenir un dimensionnement de l'entrainement au plus juste.

Published
2016

20. Comparaison de Performances de Différentes Structures de Machines Synchrones à Aimants Permanents (MSAP) Polyphasées en Mode Normal et en Modes Dégradés en Vitesse Variable avec Défluxage pour des Applications Hydroliennes

Author

FALL, Ousmane, Charpentier, Jean-Frédéric, NGUYEN, Ngac-Ky, LETELLIER, Paul, JEUMONT ELETRIC (JE), JEUMONTELECTRIC, Institut de Recherche de l'Ecole Navale (IRENAV), Université de Bordeaux (UB)-Institut Polytechnique de Bordeaux-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Arts et Métiers Sciences et Technologies, HESAM Université (HESAM)-HESAM Université (HESAM), Laboratoire d’Électrotechnique et d’Électronique de Puissance - ULR 2697 (L2EP), Centrale Lille-Haute Etude d'Ingénieurs-Université de Lille-Arts et Métiers Sciences et Technologies, HESAM Université - Communauté d'universités et d'établissements Hautes écoles Sorbonne Arts et métiers université (HESAM)-HESAM Université - Communauté d'universités et d'établissements Hautes écoles Sorbonne Arts et métiers université (HESAM), Centrale Lille-Université de Lille-Arts et Métiers Sciences et Technologies, HESAM Université - Communauté d'universités et d'établissements Hautes écoles Sorbonne Arts et métiers université (HESAM)-HESAM Université - Communauté d'universités et d'établissements Hautes écoles Sorbonne Arts et métiers université (HESAM)-JUNIA (JUNIA), and Université catholique de Lille (UCL)-Université catholique de Lille (UCL)

Subjects
[SPI]Engineering Sciences [physics]
Abstract

International audience; Cet article a pour objectif de caractériser différentes configurations de bobinages, de génératrices synchrones à aimants permanents déposés en surface, polyphasées pour des applications faibles vitesses et fortes puissances, associées à un multiplicateur de vitesse à faible rapport et une turbine hydrolienne à pas fixe. L'objectif est de comparer les structures polyphasées à bobinages concentrées à une structure de référence à bobinage distribué avec un pas diamétral et une encoche par pôle et par phase. L'idée est de qualifier l'influence du bobinage et de la structure polyphasée choisie, en termes de capacité de fonctionnement en défluxage en mode normal et dégradé pour un même cahier des charges relatif à une génératrice hydrolienne. L'étude concerne des machines à 5 phases régulièrement reparties et des machines à double étoiles triphasées décalées de 30°.

Published
2016

21. Optimal Efficiency Control of Synchronous Reluctance Motors-based ANN Considering Cross Magnetic Saturation and Iron Loss

Author

Truong, Phuoc Hoa, Flieller, Damien, Nguyen, Ngac Ky, Merckle, Jean, Laboratoire d’Électrotechnique et d’Électronique de Puissance - ULR 2697 (L2EP), Centrale Lille-Haute Etude d'Ingénieurs-Université de Lille-Arts et Métiers Sciences et Technologies, HESAM Université (HESAM)-HESAM Université (HESAM), Modélisation, Intelligence, Processus et Système (MIPS), Ecole Nationale Supérieure d'Ingénieur Sud Alsace-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-IUT de Colmar-IUT de Mulhouse, Centrale Lille-Université de Lille-Arts et Métiers Sciences et Technologies, HESAM Université - Communauté d'universités et d'établissements Hautes écoles Sorbonne Arts et métiers université (HESAM)-HESAM Université - Communauté d'universités et d'établissements Hautes écoles Sorbonne Arts et métiers université (HESAM)-JUNIA (JUNIA), Université catholique de Lille (UCL)-Université catholique de Lille (UCL), and Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))

Subjects
Optimal Efficiency, Optimal Currents, Synchronous Reluctance Motor, Energie électrique [Sciences de l'ingénieur], Lagrange Optimization, Finite Element Analysis, [SPI.NRJ]Engineering Sciences [physics]/Electric power, Artificial Neural Networks
Abstract

This paper presents a new idea by using the Artificial Neural Networks (ANNs) for estimating the parameters of the machine which achieving the maximum efficiency of the Synchronous Reluctance Motor (SynRM). This model take into consideration the magnetic saturation, cross-coupling and iron loss. With Finite Element Analysis (FEA), the characteristics of the SynRM including inductances and iron loss resistance are determined. Because of the non-linear characteristics, an ANN trained off-line, is then proposed to obtain the d-q inductances and iron loss resistance from Id,Iq currents and the speed. After learning process, an analytical expression of the optimal currents is given thanks to Lagrange optimization. Therefore, the optimal currents will be obtained online in real time. This method can be achieved with maximum efficiency and high-precision torque control. Simulation and experimental results are presented to confirm the validity of the proposed method.

Published
2015

23. A Self-Learning Solution for Torque Ripple Reduction for Non-Sinusoidal Permanent Magnet Motor Drives Based on Artificial Neural Networks

Author

FLIELLER, Damien, Nguyen, Ngac Ky, WIRA, Patrick, STURTZER, Guy, Ould Abdeslam, Djaffar, Merckle, Jean, Groupe de Recherche en Electrotechnique et Electronique de Nancy (GREEN), Université de Lorraine (UL), Laboratoire d’Électrotechnique et d’Électronique de Puissance - ULR 2697 (L2EP), Centrale Lille-Université de Lille-Arts et Métiers Sciences et Technologies, HESAM Université - Communauté d'universités et d'établissements Hautes écoles Sorbonne Arts et métiers université (HESAM)-HESAM Université - Communauté d'universités et d'établissements Hautes écoles Sorbonne Arts et métiers université (HESAM)-JUNIA (JUNIA), Université catholique de Lille (UCL)-Université catholique de Lille (UCL), Modélisation, Intelligence, Processus et Système (MIPS), Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA)), Centrale Lille-Haute Etude d'Ingénieurs-Université de Lille-Arts et Métiers Sciences et Technologies, HESAM Université (HESAM)-HESAM Université (HESAM), Ecole Nationale Supérieure d'Ingénieur Sud Alsace-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-IUT de Colmar-IUT de Mulhouse, Groupe de Recherche en Electrotechnique et Electronique de Nancy [GREEN], 13338|||Laboratoire d’Électrotechnique et d’Électronique de Puissance - ULR 2697 [L2EP], and Modélisation, Intelligence, Processus et Système [MIPS]

Subjects
Neuro-controller, [PHYS.COND.CM-S]Physics [physics]/Condensed Matter [cond-mat]/Superconductivity [cond-mat.supr-con], [SPI.ELEC]Engineering Sciences [physics]/Electromagnetism, Homopolar Current, Energie électrique [Sciences de l'ingénieur], Cogging Torque, [SPI.NRJ]Engineering Sciences [physics]/Electric power, Permanent Magnet Synchronous Motor, Torque Ripple, Adaline, cogging torque, homopolar current, neurocontroller, permanent-magnet synchronous motor (PMSM), torque ripple
Abstract

This paper presents an original method, based on artificial neural networks, to reduce the torque ripple in a permanent-magnet non-sinusoidal synchronous motor. Solutions for calculating optimal currents are deduced from geometrical considerations and without a calculation step which is generally based on the Lagrange optimization. These optimal currents are obtained from two hyperplanes. The study takes into account the presence of harmonics in the back-EMF and the cogging torque. New control schemes are thus proposed to derive the optimal stator currents giving exactly the desired electromagnetic torque (or speed) and minimizing the ohmic losses. Either the torque or the speed control scheme, both integrate two neural blocks, one dedicated for optimal currents calculation and the other to ensure the generation of these currents via a voltage source inverter. Simulation and experimental results from a laboratory prototype are shown to confirm the validity of the proposed neural approach. CPER Région Alsace 2007-2013

Published
2013

26. Real-Time Switches Fault Diagnosis Based on Typical Operating Characteristics of Five-Phase Permanent-Magnetic Synchronous Machines.

Author

Trabelsi, Mohamed, Nguyen, Ngac Ky, and Semail, Eric

Subjects
*ELECTRIC inverters, *ELECTRIC switchgear, *ELECTRIC potential, *PERMANENT magnets, *ALTERNATING current electric motors
Abstract

A novel centroid-based diagnostic method of the power switches in five-leg voltage source inverter is proposed in this paper. Using a vectorial multimachine description, a five-phase drive presenting an opened switch or an opened phase faults has typical operating characteristics in comparison to classical three-phase drives. Based on such characteristics, this paper aims to provide a simple and robust diagnostic process for switches fault regardless of the shape of the back electromotive forces (harmonic components) and the transient states due to the load variation. Original theoretical developments are presented. Experimental results are shown to validate the proposed strategy. [ABSTRACT FROM PUBLISHER]

Published
2016
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28. Adaline-Based Control Schemes for Non-Sinusoidal Multiphase Drives—Part II: Torque Optimization for Faulty Mode.

Author

Vu, Duc Tan, Nguyen, Ngac Ky, Semail, Eric, and Wu, Hailong

Subjects
*ELECTROMOTIVE force, *FAULT-tolerant control systems, *PERMANENT magnets, *VECTOR control, *OPEN-circuit voltage, *TORQUE
Abstract

Fault tolerance has been known as one of the main advantages of multiphase drives. When an open-circuit fault happens, smooth torque can be obtained without any additional hardware. However, a reconfiguration strategy is required to determine new reference currents. Despite advantages of non-sinusoidal electromotive forces (NS-EMFs) such as high torque density, multi-harmonics existing in NS-EMFs cause more challenges for control, especially under faulty conditions. Therefore, to guarantee high-quality vector control of multiphase drives with multi-harmonic NS-EMFs, this two-part study proposes control schemes using adaptive linear neurons (Adalines) to adaptively eliminate torque ripples. The proposed simple Adalines are efficient because of taking advantage of the knowledge of rotor position and of torque harmonic rank induced by the NS-EMFs. The control scheme using an Adaline for healthy mode was described in part I of this study. In this second part, the control scheme using another Adaline for an open-circuit operation, under the impacts of multi-harmonics in NS-EMFs, is proposed. Notably, smooth torque and similar copper losses in the remaining healthy phases can be obtained. Experimental tests are carried out on a seven-phase permanent magnet synchronous machine (PMSM) with a high total harmonic distortion (THD = 38%) of NS-EMFs. A demonstration video is provided with this paper. [ABSTRACT FROM AUTHOR]

Published
2022
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