Title :
A four level rectifier inverter system for drive applications
Author :
Sinha, Gautam ; Lipo, Thomas A.
Author_Institution :
Wisconsin Univ., Madison, WI, USA
Abstract :
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
Keywords :
AC motor drives; invertors; load flow; machine control; rectifying circuits; starting; AC drive; DC capacitor voltages balancing; DC voltage balancing; bidirectional real power flow; control issues; four level rectifier inverter system; motor startup; motoring mode; multilevel inverter; overcurrents; regenerating mode; Capacitors; Diodes; Drives; Inverters; Rectifiers; Switches; Switching circuits; Switching converters; Topology; Voltage;
Journal_Title :
Industry Applications Magazine, IEEE
DOI :
10.1109/2943.644889