8Kolar J.W., Ertl H., and Zach F.C., Influence of the Modula- tion Method on the Conduction and Switching Losses of a PWM Converter System [J], IEEE Transactions on Industry Ap- plications, 1991,26 ( 6 ) : 1063 - 1075.
9Zwimpfer P., and Stemmler H.," Modulation and Realization of a novel Two-Stage MatrixConverter [J]. Proceedings of the 6h Brazilian Power Electronics Conference, FIorianopolis, Brazli, 2001 (2) : 485-490.
10Schuster A., A Matrix Converter without Reactive Clamp Ele- ments for an Induction MotorDrive System [J]. Proceedings of the 29th IEEE Power' Electronies Specialists Conference, Fukuoka,Japan, 1998(1) :714-720.
