Digital voltage/current control of a high voltage output LCC resonant converter based power supply for capacitor charging

A control scheme is presented for a high voltage output power supply based on an LCC resonant converter which exploits the flexibility of digital methods to attain high performance with simple algorithms. The control scheme uses voltage and current control operating modes; the interaction of these m...

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Bibliographic Details
Published in2009 IEEE International Conference on Industrial Technology pp. 1 - 6
Main Authors Ditmanson, C., Guldner, H., Gleisberg, F., Rentzsch, M.
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.02.2009
Subjects
Adaptive filters
Control systems
Current control
Digital control
Low pass filters
Power capacitors
Power generation
Power supplies
Resonance
Voltage control
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Summary:A control scheme is presented for a high voltage output power supply based on an LCC resonant converter which exploits the flexibility of digital methods to attain high performance with simple algorithms. The control scheme uses voltage and current control operating modes; the interaction of these modes is analytically investigated. Optimally fast capacitor charging is attained by charging up using current control mode and switching to voltage control mode for approach of the reference voltage. An adaptive low-pass filter of the reference voltage is presented which guarantees zero reference overshoot for a wide range of resistive-capacitive loads. The devised scheme is simple, effective, and not specific to the system under study. Details of FPGA implementation and experimental results verifying the adaptive reference filter are presented.
ISBN:1424435064
9781424435067
DOI:10.1109/ICIT.2009.4939697