DC Magnetic Deviation, and its Suppression, of a Matching Transformer in a Series Active Filter
DC Magnetic Deviation, and its Suppression, of a Matching Transformer in a Series Active Filter
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串联有源滤波器中匹配变压器的直流磁偏及其抑制
DOI：
10.1541/ieejias.122.744
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发表时间：
2002
影响因子：
--
通讯作者：
H. Fujita
中科院分区：
文献类型：
--
作者：
H. Hasegawa;S. Srianthumrong;H. Akagi;H. Fujita
本文提出了一种用于带容性负载的大容量二极管整流器谐波电流补偿的串联有源滤波器。在用于将串联有源滤波器连接到二极管整流器的交流侧的串联匹配Transformer中可能发生磁通饱和。本文研制了一种匹配Transformer直流励磁电流的模拟控制器，沿着了该控制器的模型，以避免磁通饱和。考虑到控制器中的失调电压和电流传感器中的误差，从理论和实验上讨论了控制器的工作特性。最后讨论了匹配Transformer的磁化特性与磁化电流幅值的关系。
This paper deals with a series active filter for harmonic-current compensation of a large-capacity diode rectifier with a capacitive load. Flux satulation may occur in a series matching transformer for connecting the series active filter to the ac side of the diode rectifier. This paper develops an analog controller of a dc magnetizing current flowing in the matching transformer, along with a model for the controller, to avoid the flux satulation. Operating characteristics of the controller are theoretically and exprimentally discussed, taking into account both an offset voltage in the controller and an error in a current sensor. Finally, this paper discusses a relation between magnetizing characteristics of the matching transformer and the amplitude of the magnetizing current.