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高压变频器输出差模滤波器设计和共模电压抑制 被引量:11

Differential-Mode Filter Design and Common-Mode Voltage Suppression at the High Voltage VFD Output Terminals
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摘要 高压变频器输出电压含有大量的差模电压谐波分量和幅值很高的共模电压谐波分量。输出电压的谐波分量会加剧系统中电抗器和电动机绕组的发热,在电动机上产生过电压和漏电流,同时对系统造成严重的电磁干扰。本文首先对变频器输出电压的谐波特性进行分析,然后给出了差模滤波器的设计方法。针对变频器的直流侧存在的两种不同结构,介绍了两种共模电压抑制的电路拓扑。仿真实验表明了上述措施的有效性。 高压变频器输出电压含有大量的差模电压谐波分量和幅值很高的共模电压谐波分量。输出电压的谐波分量会加剧系统中电抗器和电动机绕组的发热,在电动机上产生过电压和漏电流,同时对系统造成严重的电磁干扰。本文首先对变频器输出电压的谐波特性进行分析,然后给出了差模滤波器的设计方法。针对变频器的直流侧存在的两种不同结构,介绍了两种共模电压抑制的电路拓扑。仿真实验表明了上述措施的有效性。
出处 《电工技术学报》 EI CSCD 北大核心 2011年第S1期161-165,共5页 Transactions of China Electrotechnical Society
关键词 高压变频器 差模滤波器 共模电压 共模抑制电抗器 High voltage VFD differential-mode filter common-mode voltage common-mode suppression reactor
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参考文献10

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