DocumentCode
3218207
Title
Compact Digital High Voltage Charger
Author
Li, Ge ; Zhou, Yingui
Author_Institution
Dept. of Electrical Engineering, Shanghai Jiao Tong University, PR. China, lige@sjtu.edu.cn
fYear
2005
fDate
16-20 May 2005
Firstpage
3964
Lastpage
3966
Abstract
The high voltage (HV) charger for modulators and accelerators is investigated with classical resonant circuit working at over 30 kHz and zero-current-switching (ZCS) condition, which charges the loads more accurately for the increased voltage steps by working in higher frequency. The compact charger is composed by low voltage (LV) control panel and HV transformer, which can work in the modes of DC charging or bursts whenever necessary. Comparing with conventional pulse width modulation (PWM) method, the switch losses of power devices are significantly decreased by above ZCS soft switch approach used in the resonant circuit. The experimental setup with above topology is tested at 69 kHz. The high speed IGBT drivers, which cut the turn-on and turn-off times of the commercial drivers from 1μs to 0.1μs, are developed and implemented in about system.
Keywords
Driver circuits; Frequency; Low voltage; Pulse circuits; Pulse width modulation; RLC circuits; Switches; Switching circuits; Voltage control; Zero current switching;
fLanguage
English
Publisher
ieee
Conference_Titel
Particle Accelerator Conference, 2005. PAC 2005. Proceedings of the
Print_ISBN
0-7803-8859-3
Type
conf
DOI
10.1109/PAC.2005.1591684
Filename
1591684
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