Voltage Balancing Control of Diode-Clamped Multilevel Rectifier/Inverter Systems

Zhiguo Pan
Keith Corzine, Missouri University of Science and Technology
V. R. Stefanovic
J. M. Leuthen
Fang Zheng Peng

This document has been relocated to http://scholarsmine.mst.edu/ele_comeng_facwork/693
There were 58 downloads as of 22 Jun 2016.


This paper presents a new voltage balancing control for the diode-clamped multilevel rectifier/inverter system. A complete analysis of the voltage balance theory for a 5-level back-to-back system is given. The analysis is based on fundamental frequency switching control and then extended to pulse-width modulation. The method involves obtaining optimal switching angles; a process which is described in detail in this paper. The proposed control strategy regulates the DC bus voltage, balances the capacitors, and decreases the harmonic components of the voltage and current. Simulation and experimental results demonstrate the validity of the optimizing method and control theory.