摘要
以典型的PWM变频驱动电机系统为对象,研究了干扰通道寄生参数和高频干扰源的建模方法。分别提出了变频器电路寄生参数的理论计算方法和电动机高频模型的实验提取方法,建立了系统级差模干扰和共模干扰的高频电路模型,提出了考虑PWM上升时间的高频干扰源建模方法,并对变频驱动装置在电网侧和负载电机侧的传导干扰进行了计算,以一台工业产品驱动装置为对象进行了实验验证,测试结果与计算结果的对比证明了该文方法的正确性。
A typical PWM variable-speed ac motor drive is studied in order to investigate the conducted electromagnetic interference （EMI） at both the input and output sides of the drive. High frequency equivalent circuit for the drive and ac motor are proposed. The noise path required parasitic components extraction are implemented through theoretical analysis and experimental method. High frequency EMI source models are presented to consider PWM switching rise-time modeling. The overall circuit models for differential-mode and common-mode EMI prediction are obtained. The proposed method is verified by comparing the predicted spectrum with experimental tests.
出处
《中国电机工程学报》
EI
CSCD
北大核心
2008年第15期141-146,共6页
Proceedings of the CSEE
基金
国家自然科学基金委员会创新研究群体科学基金(50721063)~~
关键词
电力电子
电磁兼容
寄生参数
传导干扰模型
PWM变频驱动装置
power electronics
electromagnetic compatibility
parasitic components
conducted electromagnetic interferencemodel
PWM variable-speed drives
