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Energies 2017, 10(5), 616; doi:10.3390/en10050616

Research on Control Strategies of an Open-End Winding Permanent Magnet Synchronous Driving Motor (OW-PMSM)-Equipped Dual Inverter with a Switchable Winding Mode for Electric Vehicles

1
State Key Laboratory of Automotive Simulation and Control, Jilin University, Changchun 130022, China
2
R&D Center, China FAW Group Corporation, Changchun 130011, China
*
Author to whom correspondence should be addressed.
Academic Editor: King Jet Tseng
Received: 1 March 2017 / Revised: 11 April 2017 / Accepted: 27 April 2017 / Published: 2 May 2017
(This article belongs to the Special Issue Advanced Electrification for Transportation and Built Environment)
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Abstract

An open-end winding permanent magnet synchronous motor (PMSM) has a larger range of speed regulation than normal PMSM with the same DC voltage, and the control method is more flexible. It can also manage energy distribution between two power sources without a DC/DC converter. This paper aims at an electric vehicle equipped with OW-PMSM drive system with dual power sources and dual inverters; based on analyzing the external characteristics of each winding mode, we propose a winding mode switching strategy whose torque saturation judgmental algorithm, which is insensitive to motor’s parameters, could automatically realize upswitching of the winding mode. The proposed multi-level current hysteresis modulation algorithm could set the major power source and switch it at any time in independent mode, which accomplishes energy distribution between two power sources; its two control methods, low switching frequency method and high power difference method, could achieve different energy distribution effects. Simulation results confirm the validity and effectiveness of the winding mode switching strategy and current modulation method. They also show that an electric vehicle under the proposed control methods has better efficiency than one equipped with a traditional OW-PMSM drive system under traditional control. View Full-Text
Keywords: energy management; electric vehicle; open-end winding permanent magnet synchronous motor (OW-PMSM); multi-level current hysteresis modulation; winding mode switch energy management; electric vehicle; open-end winding permanent magnet synchronous motor (OW-PMSM); multi-level current hysteresis modulation; winding mode switch
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Chu, L.; Jia, Y.-F.; Chen, D.-S.; Xu, N.; Wang, Y.-W.; Tang, X.; Xu, Z. Research on Control Strategies of an Open-End Winding Permanent Magnet Synchronous Driving Motor (OW-PMSM)-Equipped Dual Inverter with a Switchable Winding Mode for Electric Vehicles. Energies 2017, 10, 616.

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