8Saeedifard M.Space vector modulation of multi-level and multi-module converters for high power application[D].Toronto:Department of Electrical & Computer Engineering,University of Toronto,2008.
9Shu Zeliang.Single-phase back-to-back converter for active power balancing,reactive power compensation,and harmonic filtering in traction power system[J].IEEE Trans on Power Electronics,2011,26(2):334-343.
10EI-Saadany E F, Salama m M A, Chikhani A Y. Passive filter design for harmonic reactive power compensation in single-phase circuits supplying nonlinear loads[J]. IEE Proceedings - Generation, Trans- mission and Distribution, 2000, 147(6): 373-380.