航空高压电机驱动系统低频传导电磁干扰建模研究

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关键词：电磁兼容;传导发射;脉冲宽度调制逆变器;低频噪声；电磁干扰滤波器;共模干扰；差模

干扰

DOI：10. 15938/j. emc. 2025.06.004

中图分类号：TM464 文献标志码：A 文章编号：1007-449X（2025）06-0035-09

Modeling of low-frequency conducted electromagnetic interference in high-voltage motor drive systems for aviation applications

ZHANG Yu1，2 ， HAN Xun²， LI Fanwei²， WANG Junsong²， HUANG Wenxin1 （1.College of Automation Engineering，Nanjing Universityof Aeronautics and Astronautics，Nanjing 210ooo，China; 2.Aero-Engine Control System Institute，Wuxi 21400O，China）

Abstract：To address the challenge of low-frequency conducted electromagnetic interference （EMI） modeling for high-voltage motor drive systems in aviation applications，a modeling approach for common-mode and differential-mode noise in pulse width modulation （PWM） inverters was proposed. Through quantitative analysis and simulation，the relationship between harmonic components of common-mode and diferential-mode noise and the inverter modulation ratio（which is positively correlated with motor speed）was thoroughly investigated. The model was validated experimentally on a 27O V/1.5 kW high-voltage motor drive prototype.The results indicate that the discrepancy between the experimental data and the simulation results is less than 6 dB，confirming the accuracy of the model in reflecting low-frequency conducted noise characteristics. This study provides a theoretical basis for optimizing the design of EMI filters in inverter power lines，contributes to reducing filter size，and enhances system power density.It also offers significant insights for the electromagnetic compatibility design of aviation motor drive systems.

Keywords：electromagnetic compatibility；conducted emisson; pulse width modulation inverter; low-frequency noise；electromagnetic interference filter；common conducted emission；differential conducted emission

0引言

随着多电、全电飞机的发展，机载设备功率等级日益增大，电压等级也同步提高（从28V到 270V 后续还将进一步提升至540V）。（剩余11117字）