Investigation of challenges in interior and surface permanent magnet synchronous machines during integrated charging operation in electric vehicles

The beneficial nature of employing power electronics and drive components in conventional electric vehicle (EV) towards level 3 charging capability has propelled research activities towards integrated charging (IC) technology. However, alternating magnetic fields produced in the air-gap by AC chargi...

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Bibliographic Details
Published in:International journal of powertrains 2018, Vol.7 (4), p.302-320
Main Authors: Iyer, K. Lakshmi Varaha, Lai, Chunyan, Mukundan, Shruthi, Dhulipati, Himavarsha, Mukherjee, Kaushik, Kar, Narayan C
Format: Article
Language:English
Subjects:
Air gaps
Charging
Electric vehicles
Experimentation
Finite element method
Magnetism
Permanent magnets
Synchronous machines
Synchronous motors
Traction
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Summary:The beneficial nature of employing power electronics and drive components in conventional electric vehicle (EV) towards level 3 charging capability has propelled research activities towards integrated charging (IC) technology. However, alternating magnetic fields produced in the air-gap by AC charging currents and the stationary nature of the rotor leads to unusual loss and magnet operating characteristics. Since the same permanent magnet synchronous motor (PMSM) will be used for both traction and IC, it is important to understand the machine's behaviour during IC to optimally design the machine for both applications. Hence, this paper exclusively investigates: 1) permanent magnet operation; 2) electrical and magnet losses; 3) temperature rise; and 4) effect of winding inductances on voltages and currents, in both surface and interior traction PMSMs employed for IC in EVs. Results obtained from investigations conducted on laboratory interior and surface PMSMs using finite element analysis and experimentation are analysed and discussed.
ISSN:1742-4267
1742-4275
DOI:10.1504/IJPT.2018.095639