전력전자학회:학술대회논문집 (Proceedings of the KIPE Conference)
- 전력전자학회 2001년도 Proceedings ICPE 01 2001 International Conference on Power Electronics
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- Pages.301-303
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- 2001
A Capacitor-Charging Power Supply Using a Series-Resonant Three-Level Inverter Topology
- Song I. H. (POSCON Corporation R&D Center, Techno-Complex, Korea Univ.) ;
- Shin H. S. (POSCON Corporation R&D Center, Techno-Complex, Korea Univ.) ;
- Choi C. H. (POSCON Corporation R&D Center, Techno-Complex, Korea Univ.)
- 발행 : 2001.10.01
초록
In this paper we present a Capacitor Charging Power Supply (CCPS) using a series-resonant three-level inverter topology to improve voltage regulation and use semiconductor switches having low blocking voltage capability such as MOSFETs. This inverter can be operated with two modes, Full Power Mode (FPM) and Half Power Mode (HPM). In FPM inverter supplies the high frequency step up transformer with full DC-link voltage and in HPM with half DC-link voltage. HPM switching method will be adopted when CCPS output voltage reaches the preset target value and operates in refresh mode-charge is maintained on the capacitor. In this topology each semiconductor devices blocks a half of the DC-link voltage[2]. A 15kW, 30kV CCPS has been built and will be tested for an electric precipitator application. The CCPS operates from an input voltage of 500VDC and has a variable output voltage between 10 to 30kV and 1kHz repetition rate at 44nF capacitive load [3]. A resonant frequency of 67.9kHz was selected and a voltage regulation of
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