摘要
为了提高并联型有源电力滤波器对快速变化的电流型负载进行灵活补偿时的性能,该文提出了一种带预测功能的电流检测算法。通过引入一种简单有效的预测算子可以使电流检测环节的动态性能大大提高,同时几乎不增加控制部分的复杂程度。结合作者提出的一种基于时域的电流检测算法,使有源电力滤波器能够根据不同的补偿目的进行灵活的补偿。实验结果证实了新的电流检测算法与传统的电流检测算法相比具有更好的动态性能。最后给出了采用新算法的有源电力滤波器根据不同补偿目的进行补偿的实验波形,补偿效果良好。
A novel current detection algorithm with predictor is presented to improve the performance of shunt active power filter in compensation of fast-varying nonlinear load. By using the simple and effective predictor, the dynamic performance is improved, while the complexity of the control system is almost not increased. Different compensating current references can be obtained accurately and easily by adopting the proposed algorithm based on time domain. It ensures that a shunt APF can achieve different compensation purposes well. Testing results on an experimental SAPF show good steady-state performance and excellent dynamic performance which far exceeds that of conventional identifier.
出处
《中国电机工程学报》
EI
CSCD
北大核心
2005年第13期57-62,共6页
Proceedings of the CSEE
关键词
电力电子
有源电力滤波器
电流检测
预测算子
Power electroncis
Active power filter
Current detection algorithm
Predictor
