The unified power quality conditioner (UPQC) is a kind of novel harmonic and reactive compensation equipment by combining the series active filter and shunt active filter.

统一电能质量调节器(UPQC)是结合串联有源滤波器和并联有源滤波器的一种新型谐波和无功补偿装置。

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On the basis of discussing the operation principles of the shunt and the series active power filters, their compensation characteristics to different types of harmonic sources are investigated.

在探讨并联型和串联型APF工作原理的基础上，研究了它们对不同谐波源的补偿特性。

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In this paper a series-shunt compensation servo system which can be realized with-out much difficulties is derived from a typical equivalent system configuration.

本文从典型等值结构图出发，推得一种易于实现的串并联校正随动系统。

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