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交错降压式全桥有源电力滤波器

, PP. 34-40

Keywords: 有源电力滤波器,交错降压,全桥,死区效应,倍频SPWM

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Abstract:

传统全桥有源电力滤波器(activepowerfilter,APF)正常工作时开关管驱动信号中要加入死区时间,这样就会产生死区效应,降低APF的补偿性能。为了解决这个问题,提出一种交错降压式全桥APF,其最大的特点是没有直通隐患,可靠性高,无需设置死区,补偿性能好。针对新型APF电感数目较多的缺陷,采用半波倍频正弦脉宽调制(sinusoidalpulsewidthmodulation,SPWM),有效地减小了单个电感的感值,从而减弱电感数量增加而带来的体积重量影响。仿真和实验验证了理论分析的正确性和新型APF的可行性。

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