航空高壓電機驅動系統(tǒng)低頻傳導電磁干擾建模研究

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關鍵詞：電磁兼容;傳導發(fā)射;脈沖寬度調制逆變器;低頻噪聲；電磁干擾濾波器;共模干擾；差模

干擾

DOI：10. 15938/j. emc. 2025.06.004

中圖分類號：TM464 文獻標志碼：A 文章編號：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

隨著多電、全電飛機的發(fā)展，機載設備功率等級日益增大，電壓等級也同步提高（從28V到 270V 后續(xù)還將進一步提升至540V）。（剩余11117字）