摘要
为较好地抑制PWM变频驱动系统电磁干扰,必须准确掌握系统电磁干扰性质、分布规律及主要影响因数。因此,先利用传导干扰分离网络对PWM变频驱动系统的共模干扰进行测试,通过对比分析不同工况下的测试结果,得出了共模干扰在电网侧与负载侧的分布规律。对共模干扰模型进行分析、改进,最后通过理论分析计算,得出了系统共模干扰的抑制措施,为EMI设计提供了一定的理论指导。
The common mode （CM） interference of PWM inverter systemto become more serious everyday. Therefore, used separation network to meter the common mode for PWM inverter system. Through the comparison re- sult of different condition ,we found regular distribution of common mode interference in power supply side and load side. Then improve the interference model, and theory analysis and calculation, at last obtain some choke measuresCM interference. It can provided theoretical guidance for EMI filter designed.
出处
《电机与控制应用》
北大核心
2012年第2期38-41,48,共5页
Electric machines & control application
关键词
共模干扰
干扰模型
电磁干扰
common mode interference
interference model
electro-magnetic interference
