Novel control scheme of DC current suppression used for UCI-APF
Ting Qian · Journal of Zhejiang University(Engineering Science) · 2003
With existent control method,Unified Constantfrequency Integration active powe r filter (UCIAPF)exists the DC offset which is present in line current.Because of the problem,UCIAPF cannot be applied widely.The dualloop control concept for UCIAPF presented here is based on sufficient analysis.The method can real ize closeloop control of DC offset and improve the stabilit y by integrating the line current. Experimental results showed that the new schem e can e fficiently compensate the dc offset and is feasible for practical application.