10 kV High Voltage Generator with LLC Resonant Circuit for Sterilizing Microbe Applications

This paper proposes a high step-up voltage ratio of full-bridge converter associated with LLC resonant circuit for sterilizing microbe applications. The proposed circuit structure adopts full-bridge converter to generate a high DC voltage, while the LLC resonant circuit is used to recover the energy...

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Bibliographic Details
Main Authors: Tseng, S.-Y., Lin, H.-C., Chang, Y.-D., Peng, S.-T., Fan, S.-Y.
Format: Conference Proceeding
Language:English
Subjects:
Capacitors
DC generators
Inductance
Power generation
Resonance
RLC circuits
Stress control
Switching converters
Voltage control
Zero voltage switching
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Summary:This paper proposes a high step-up voltage ratio of full-bridge converter associated with LLC resonant circuit for sterilizing microbe applications. The proposed circuit structure adopts full-bridge converter to generate a high DC voltage, while the LLC resonant circuit is used to recover the energy trapped in leakage inductance of transformer and to reach zero-voltage switching feature increasing conversion efficiency. Moreover, the LLC one can also avoid generating a large resonant current which occurs in between the large leakage inductance and the large equivalent capacitor of primary winding in transformer due to transformer with a high turns ratio. As compared with a conventional full-bridge converter with hard-switching circuit or phase-shift control method, the proposed converter can reduce voltage and current stresses of switches and increase conversion efficiency with soft-switching features. Finally, a prototype of high voltage generator under output voltage of 10 kV and maximum output power of 1 kW has been implemented to prove the feasibility of the proposed high voltage generator.
ISSN:1048-2334
2470-6647
DOI:10.1109/APEC.2009.4802888