摘要
UCI-APF是一种十分有效的谐波补偿新方法。但在实际电路中由于电路参数的误差和电流纹波的存在,网侧电路上将产生电流直流分量,这严重地阻碍了UCI-APF的应用推广。为此,该文在详细分析的基础上, 提出了单相UCI-APF的双环控制方案。该方法通过电流积分环节的调节作用,实现了电流直流分量的闭环控制,并提高了电路可靠性。实验结果证明,该方案能有效地消除进线电流中的直流分量,从而能用于实际场合。
The Unified Constant-frequency Integra-tion Active Power Filter (UCI-APF) based on a one-cycle control is an effective and simple solution for the power quality control,however, the application of the UCI-APF is prevened by the de offset presented in the line current due to the error of parameters and the ripple of inductor current. A dual-loop control scheme for UCI-APF. is proposted to realize the closed-loop control of the dc offset by integrating the line current, and to improve the circuit抯 reliability. Experimental results show that the new scheme can effectively suppress the dc offset and be feasible for practical application.
出处
《中国电机工程学报》
EI
CSCD
北大核心
2003年第3期34-37,共4页
Proceedings of the CSEE
