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首页> 外文期刊>IEEE Transactions on Industrial Electronics >Control system for three-phase active power filter which simultaneously compensates power factor and unbalanced loads
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Control system for three-phase active power filter which simultaneously compensates power factor and unbalanced loads

机译：三相有源电力滤波器的控制系统，可同时补偿功率因数和不平衡负载

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摘要

The effectiveness of an active power filter depends basically on three characteristics: (a) the modulation method used; (b) the design characteristics of the PWM modulator; and (c) the method implemented to generate the reference template. For the last characteristic there are many methods, most of them complicated and hence difficult to implement and adjust. In this paper, a new method, which has simplicity at its main characteristic, is presented. The method is based on "sample and hold" circuits, synchronized with the peak value of the phase-to-neutral mains voltage. This method is useful for shunt active power filters and is capable to eliminate harmonics, compensate power factor, and correct unbalance problems simultaneously. It also has the ability to slow-down sudden transient changes in the load. Experimental results, with the reference template obtained with the method, are presented in the paper.
机译：有源功率滤波器的有效性主要取决于三个特征：（a）所使用的调制方法； （b）PWM调制器的设计特征； （c）用于生成参考模板的方法。对于最后一个特征，有很多方法，其中大多数方法很复杂，因此难以实施和调整。本文提出了一种新方法，其主要特点是简单。该方法基于“采样和保持”电路，并与相线至中性线电源电压的峰值同步。该方法对于并联有源滤波器非常有用，并且能够消除谐波，补偿功率因数并同时纠正不平衡问题。它还具有减缓负载突然突变的能力。用该方法获得的参考模板给出了实验结果。

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