Development of Large Capacity Programmable Harmonic Current Generator Based on Three-phase-four-wire Configuration

2006 CES/IEEE 5th International Power Electronics and Motion Control Conference Pub Date : 2006-08-01 DOI:10.1109/IPEMC.2006.4777960

Liu Tao, Zhuo Fang, Chen Bo, Zhai Xi, Wang Zhao-an

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Abstract

The large capacity harmonic current generator based on three-phase four-wire configuration uses four-leg converter as its main circuit. So it is different from the traditional small capacity linear current source. The whole equipment can output steady harmonic current include the selective order harmonic (below 25th order), reactive current and unbalanced current. Besides, dynamic change process of harmonic current can also be accurately simulated from the equipment. The output harmonic current can be set from communicating with computer or the EPROM. The harmonic current generator can be applied to testing electrical measure equipment or debugging the harmonic current elimination equipments. This paper first introduces the operation principle and main circuit; and then analyzes the control circuit structure and presents one control method with voltage feedforward control and the output current DFT feedback control; lastly the simulation results and the experiment results based on 50 kVA harmonic current generator are given in this paper. The results of the simulation and experiment verify well performance of the device even though for the large capacity

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基于三相四线制结构的大容量可编程谐波电流发生器的研制

基于三相四线制结构的大容量谐波电流发生器采用四支路变换器为主电路。因此它不同于传统的小容量线性电流源。整个设备可输出的稳定谐波电流包括选择阶谐波(25阶以下)、无功电流和不平衡电流。此外，还可以从设备上准确模拟谐波电流的动态变化过程。输出谐波电流可通过与计算机或EPROM通信来设定。谐波电流发生器可用于电气测量设备的检测或谐波消流设备的调试。本文首先介绍了其工作原理和主电路;然后分析了控制电路结构，提出了电压前馈控制和输出电流DFT反馈控制的一种控制方法;最后给出了基于50kva谐波电流发生器的仿真结果和实验结果。仿真和实验结果验证了该装置在大容量条件下具有良好的性能

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2006 CES/IEEE 5th International Power Electronics and Motion Control Conference

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