大功率整流机组滤波器的参数设计方法

The Harmonics Filter Parameter Design of the High Power Rectification Machine

研究了电解铝厂大功率可控整流系统功率因数低下的原因,分析了这种整流机组网侧谐波电流和基波感性电流。根据系统功率因数要求,给出了整流变第三线圈加装PLC型结构的滤波器中电阻、电感、电容三个参数的计算方法,在参数计算方法中着重强调了品质因数Q的选取原则。根据给出的计算公式,计算了某电解铝公司两系列整流机组滤波器参数,并与两个系列整流机组的实践效果进行了对比,从而证明了计算方法的正确性。

The reason is investigated that the power factor large power controlled rectifier＇s of the aluminum company is low . The harmonic current and fundamental inductive current of rectifier on line side is analyzed. According to the request of power factor in rectifier system, gave the method to calculate the parameter as resistance, capacitor and inductor of PLC filter which is added in the rectifier transformer＇s third coil. In the parameter calculate method, the select principia of the quality factor Q is emphasized. According to the formula has been given, the parameter of wave filter of a electrolysis aluminum company＇s two series of rectification machine is calculated and compared with the fact value and the effect of wave filter. Consequently, the correctness of the parameter calculate method of filter of rectification machine.