A unified switched capacitor converter

Author

Bin Wu ; Keyue, Smedley ; Sigmond, Singer

Author_Institution

Power Electron. Lab., Univ. of California, Irvine, Irvine, CA, USA

fYear

2014

fDate

14-18 Sept. 2014

Firstpage

2781

Lastpage

2786

Abstract

Switched capacitor converter is a power conversion network without participation of magnetic components. In this paper, a Unified Switched Capacitor Converter (USCC) is proposed, which realizes step up, step down, or DC to AC conversion by altering the switch triggering patterns. Additionally, gain modulation based on topology reconfiguration can be achieved. The implementation strategy and features are explored. The efficiency characteristics of switched capacitor converter focusing on charging and discharging processes are analyzed. It is demonstrated that the topology reconfiguration of switched capacitor converter is expected to have high efficiency, for a wide modulation range. The modeling method of USCC is presented. Finally, simulation results of DC-AC conversion and MPPT control validate the wide application possibilities of proposed USCC.

Keywords

DC-AC power convertors; maximum power point trackers; power control; power conversion; switched capacitor networks; DC AC conversion; MPPT control; gain modulation; power conversion network; switch triggering patterns; unified switched capacitor converter; Capacitors; Modulation; Resistors; Switches; Topology; Voltage control;

fLanguage

English

Publisher

ieee

Conference_Titel

Energy Conversion Congress and Exposition (ECCE), 2014 IEEE

Conference_Location

Pittsburgh, PA

Type

conf

DOI

10.1109/ECCE.2014.6953775

Filename

6953775