Start-Up Procedure and Switching Loss Reduction for a Single-Phase Flying Capacitor Active Rectifier
This paper describes a research conducted on a single-phase flying capacitor active rectifier. An online process that reduces the total number of switching events, which leads to a reduction of switching losses in the converter, is introduced. This method is based on redundant state selection, which is used to regulate the voltage of flying capacitors. The proposed approach is general and can be applied to flying capacitor converters with any number of levels. Furthermore, in order to control the inrush current at the start of operation and avoid extra voltage and current stress for active switches and capacitors, a start-up procedure that precharges the flying capacitors is proposed. With this precharge procedure, no additional hardware is needed. Simulation and laboratory results demonstrate these new concepts.
H. Sepahvand et al., "Start-Up Procedure and Switching Loss Reduction for a Single-Phase Flying Capacitor Active Rectifier," IEEE Transactions on Industrial Electronics, vol. 60, no. 9, pp. 3699-3710, Institute of Electrical and Electronics Engineers (IEEE), Sep 2013.
The definitive version is available at https://doi.org/10.1109/TIE.2012.2204709
Electrical and Computer Engineering
Keywords and Phrases
Switching; Active Rectifiers; Active Switches; Flying Capacitor (FC); Flying Capacitor Converter; In-Rush Current; Redundant State; Start-Up Procedure; Switching Loss; Capacitors; Single-Phase Active Rectifier; Start-Up Procedure Of Active Rectifier; Switching Loss Reduction; Capacitors; Swtiches; Rectifiers; Voltage Control; Indexes; Logic Gates
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© 2013 Institute of Electrical and Electronics Engineers (IEEE), All rights reserved.
01 Sep 2013