Title :
Voltage balancing control of diode-clamped multilevel rectifier/inverter systems
Author :
Pan, Zhiguo ; Peng, Fang Zheng ; Corzine, Keith A. ; Stefanovic, Victor R. ; Leuthen, John M. ; Gataric, Slobodan
Author_Institution :
Dept. of Electr. & Comput. Eng., Michigan State Univ., East Lansing, MI, USA
Abstract :
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 five-level back-to-back system is given. The analysis is based on fundamental frequency switching control and then extended to pulsewidth modulation (PWM). The method involves obtaining optimal switching angles; a process that is described in detail herein. 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.
Keywords :
PWM invertors; PWM rectifiers; frequency control; voltage control; PWM; dc bus voltage regulation; diode-clamped multilevel inverter systems; diode-clamped multilevel rectifier systems; frequency switching control; pulsewidth modulation; voltage balance theory; voltage balancing control; Capacitors; Control systems; Diodes; Frequency; Optimization methods; Pulse width modulation; Pulse width modulation inverters; Rectifiers; Space vector pulse width modulation; Voltage control; Multilevel converter; total harmonic distortion; voltage balancing;
Journal_Title :
Industry Applications, IEEE Transactions on
DOI :
10.1109/TIA.2005.857473