7Peng F Z,Akagi H,Nabae A.A new approach to harmonic compensation in power system-a combined system of shunt passive and series active filters[J].IEEE Trans on IA,1990,26(6):983-990.
8Akagi H.A new power line conditioner for harmonic compensation in power systems[J].IEEE Trans on PWRD,1995,10(3):1570-1575.