基于协同分析的IPMSM驱动系统EMI研究

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中图分类号：TM351 文献标志码：A

文章编号：1672-7010（2025）06-0074-10

Co-analysis of EMI in IPMSM drive system

LIN Han， ZHENG Weiran，WANG Zhonggen， ZHANG Yuhang（School of Electrical and Information Engineering，Anhui University of Science & Technology，Huainan ，China）

Abstract：To addresselectromagnetic compatibility（EMC）issues in interior permanent magnet synchronous motor （IPMSM）drive systems for new energy vehicles，an innovative motor design based on a flatwire，built-in UV-type winding topological structure is proposed to suppress electromagnetic interference （EMI）.Through the co-optimization of electromagnetic circuit coupling mechanisms and winding structures， EMI conduction in the motor drive system is mitigated.First，withinan integrated inverter-motor-cable EMC analysis framework，parasitic capacitance and inductance networks are incorporated into the inverter switching model.A conducted interference model，including a line impedance stabilization network，DC bus，and motor control system，is then established. Second，propagation paths in the drive system are analyzed. Finally，a multiphysics coupling model of the flat-wire，built-in UV-type permanent magnet synchronous motor，is developed.By optimizing the layered winding layout and minimizingendleakage inductance，the high - frequency parameter limitations of conventional round-wire UV and VV-type structures are overcome. Cosimulation results show that the flat-wire built-in UV-type structurereduces the common-mode voltage spectrum peak by 7.6% and the differential-mode voltage spectrum peak by 18.78% compared to round-wire designs.This study elucidates the regulatory effect of winding topology on system EMC performance and provides a low-interference design and evaluation paradigm for automotive motor systems.

Key words：interior permanent magnet synchronous motor，electromagnetic interference， high-frequency parameter，topological structure，co-simulation

随着全球能源结构转型与“双碳”目标的深人推进，新能源汽车驱动系统正朝着高功率、高效率方向快速发展[1]。（剩余8782字）