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Optimization of Stator Winding Turn Numbers for EV Tap-Change PMSM According to Driving Cycles
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운전사이클을 고려한 전기자동차용 권선절체모터의 권선수 최적화 연구

논문 기본 정보

Type
Academic journal
Author
Seong-Hwan Im (경북대학교) Bon-Gwan Gu (경북대학교) Jong-Kyong Lim (한양대학교) Rae-Young Kim (Hanyang University)
Journal
The Korean Institute of Electrical Engineers The transactions of The Korean Institute of Electrical Engineers Vol.71 No.4 KCI Accredited Journals SCOPUS
Published
2022.4
Pages
642 - 649 (8page)
DOI
10.5370/KIEE.2022.71.4.642

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Optimization of Stator Winding Turn Numbers for EV Tap-Change PMSM According to Driving Cycles
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Driving cycles are used to test the fuel economy and driving range of the electric vehicle propulsion motor and inverter on dynamometer. For a longer driving range, the propulsion motor and inverter need high efficiency at the driving cycle’s frequent speed and torque points. In this paper, tap-change PMSM (Permanent Magent Synchronous Motor) is studied as an electric vehicle propulsion motor for a better efficiency with two driving cycles: UDDS and HWFET. They have different high energy demand drive speeds which are 3krpm and 7krpm. With energized stator winding selection, tap-change motor high efficient regions can be adjusted to the each high energy demand drive points of UDDS and HWFET. Thus the designed tap-changes PMSM winding turn numbers are selected to minimize the motor copper loss and inverter loss at both driving cycles high energy demand drive speeds. The designed tap-change motor is implemented by rewinding a mass produced PMSM for a electric vehicle. By comparison experimental results of the motor and inverter loss with the mass produced PMSM, the designed tap-change one has a 1.63% energy efficiency improvement according to combined driving cycles.
#Tap-Change motor #Electric vehicle #Driving cycle #Inverter loss #Copper loss

Contents

Abstract
1. Introduction
2. Loss Reduction at Driving Cycle Significant Drvie Point
3. Loss Model of Inverter and Tap-Change Circuit
4. Optimal Turn Number of Tap-Change Motor
5. Experimental Results
5. Conclusion
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