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Journal of the Korean Institute of Illuminating and Electrical Installation Engineers

ISO Journal TitleJ Korean Inst. IIIum. Electr. Install. Eng.
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Title Field Current and Adaptive DC-link Voltage Control to Improve Regenerative Braking Performance of Wound-Field Synchronous Motor Drive for Electric Vehicles
Authors An-Yeol Ko ; Do-Yun Kim
DOI https://doi.org/10.5207/JIEIE.2026.40.5.372
Page pp.372-379
ISSN 1225-1135
Keywords Adaptive DC-link voltage control; Electric vehicle; Field current control; Regenerative braking; WFSM
Abstract This paper proposes a field current and adaptive DC-link voltage control strategy to improve the regenerative braking performance of a Wound-Field Synchronous Motor (WFSM) drive system for electric vehicles. During regenerative braking operation, increasing the field current enhances the air-gap flux, resulting in improved regenerative torque and energy recovery. However, the increased field flux also raises the back electromotive force (EMF), which may cause current distortion and torque ripple under a fixed DC-link voltage condition.