A four level rectifier inverter system for drive applications

In a motor drive, the converters must be able to handle bidirectional real power flow. So far, DC voltage balancing has not been satisfactorily discussed for the case when real power is drawn from the inverter. This article addresses the control issues involved in a four-level inverter based AC drive application. The DC capacitor voltages are balanced for both motoring and regenerating modes of the inverter-motor system. In addition, DC voltages can be balanced even during motor startup with the associated large overcurrents.

[1]  S. Ogasawara,et al.  A vector control system using a neutral-point-clamped voltage source PWM inverter , 1991, Conference Record of the 1991 IEEE Industry Applications Society Annual Meeting.

[2]  J. K. Steinke,et al.  Control strategy for a three phase AC traction drive with three-level GTO PWM inverter , 1988, PESC '88 Record., 19th Annual IEEE Power Electronics Specialists Conference.

[3]  G. Sciutto,et al.  A new multilevel PWM method: a theoretical analysis , 1990, 21st Annual IEEE Conference on Power Electronics Specialists.

[4]  Hirofumi Akagi,et al.  A New Neutral-Point-Clamped PWM Inverter , 1981, IEEE Transactions on Industry Applications.

[5]  Thomas A. Lipo,et al.  Comparison of multilevel inverters for static VAr compensation , 1994, Proceedings of 1994 IEEE Industry Applications Society Annual Meeting.

[6]  P. Bhagwat,et al.  Generalized Structure of a Multilevel PWM Inverter , 1983, IEEE Transactions on Industry Applications.

[7]  Jie Zhang.  High performance control of a three-level IGBT inverter fed AC drive , 1995, IAS '95. Conference Record of the 1995 IEEE Industry Applications Conference Thirtieth IAS Annual Meeting.

[8]  Yifan Zhao,et al.  Force Commutated Three Level Boost Type Rectifier , 1993, IEEE Transactions on Industry Applications.

[9]  M. Fracchia,et al.  Optimized modulation techniques for the generalized N-level converter , 1992, PESC '92 Record. 23rd Annual IEEE Power Electronics Specialists Conference.

[10]  J. K. Steinke,et al.  Switching frequency optimal PWM control of a three-level inverter , 1992 .

[11]  Peter K. Steimer,et al.  Five level GTO inverters for large induction motor drives , 1993, Conference Record of the 1993 IEEE Industry Applications Conference Twenty-Eighth IAS Annual Meeting.

[12]  Fang Zheng Peng,et al.  Multilevel converters-a new breed of power converters , 1995, IAS '95. Conference Record of the 1995 IEEE Industry Applications Conference Thirtieth IAS Annual Meeting.

[13]  Yifan Zhao,et al.  Current control of a 3-level rectifier/inverter drive system , 1994, Proceedings of 1994 IEEE Industry Applications Society Annual Meeting.