Xu, L. and Agelidis, V.G. (2004) Active capacitor voltage control of flying capacitor multilevel converters. IEE Proceedings Electric Power Applications, 151 (3). pp. 313-321. ISSN 1350-2352Full text not available in this repository. (Request a copy from the Strathclyde author)
A novel control strategy for voltage balancing of flying capacitor multilevel converters controlled with phase shifted SPWM is presented. Based on the polarity of the phase current, a relatively small square wave is added to the nominal modulation signals (typically sinusoidal) controlling the converter switches and in this way the flying capacitor voltages can be directly regulated. A simple algorithm is developed to explore an optimal solution for multiple capacitor voltage regulation. The impact of the proposed control strategy on the flying capacitor voltage variation and converter output voltage is analysed. The effectiveness of the control strategy is validated by simulation results of a five-level converter.
|Keywords:||PWM power convertors, power capacitors, voltage control, flying capacitor, Electrical engineering. Electronics Nuclear engineering, Electrical and Electronic Engineering|
|Subjects:||Technology > Electrical engineering. Electronics Nuclear engineering|
|Department:||Faculty of Engineering > Electronic and Electrical Engineering|
|Depositing user:||Pure Administrator|
|Date Deposited:||11 Apr 2012 14:47|
|Last modified:||04 May 2016 13:02|