摘要
为实现三相直流侧有源电力滤波器的数字控制,提出将平均电流控制应用于三相直流侧并联型有源电力滤波器(active power filter,APF)的控制。为设计电流补偿器,提出定量分析电流环带宽和交流侧输入电流补偿性能关系的方法。该方法分析结果表明在输入频率为50Hz的情况下,且三相直流侧APF的电流环带宽超过1kHz时,可在输入端实现较好的谐波电流补偿性能。通过利用建立的电压环和电流环数学模型,设计完成的实验样机测试结果表明,在电流环带宽为1和2kHz下的补偿效果相当,证明了平均电流控制在三相直流侧APF中应用的有效性,同时也证明了定量分析电流环带宽和补偿性能关系方法的正确性。
Average current control was applied into three-phase DC link parallel active power filter for digital control. In order to design the current loop bandwidth, the relationship between compensation performance of three-phase DC link active power filter （APF） and the current loop bandwidth was investigated in this paper. The analysis results show that good compensation performance can be obtained when current loop bandwidth is higher than 1 kHz with 50 Hz line frequency. Based on the voltage and current loop model developed in this paper, the designed prototype with digital control shows reasonable compensation performance, and the test results indicate that the averaged current controlled three-phase DC link APF has comparable performance under 1 kHz and 2 kHz current loop bandwidth. These results prove the effectiveness of the average current control for three-phase DC link APF and correctness of the compensation performance relationship developed in this paper.
出处
《中国电机工程学报》
EI
CSCD
北大核心
2009年第33期47-53,共7页
Proceedings of the CSEE
基金
国家自然科学基金项目(50507020)
全国优秀博士论文作者专项基金资助(200948)~~
