Proceedings of the KIPE Conference (전력전자학회:학술대회논문집)
- 2003.11a
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- Pages.95-98
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- 2003
ZVT boost converter with minimizing conduction losses of the main switch
주 스위치의 전도손실을 최소화한 ZVT 부스터 컨버터
- Chin Gi-Ho (Dept. of Electronics & Control Eng., Kum-oh National Institute of Technology) ;
- Kang Ahn-Jong (Dept. of Electronics & Control Eng., Kum-oh National Institute of Technology) ;
- Kim Tae-Woo (Dept. of Electronics & Control Eng., Kum-oh National Institute of Technology) ;
- Kim Hack-Sung (Dept. of Electronics & Control Eng., Kum-oh National Institute of Technology)
- Published : 2003.11.01
Abstract
A ZVT PWM Boost Converter is proposed to reduce current stresses and conduction losses of main switch in a conventional circuit. By attaching resonant inductor Lr1 in parallel with capacitor Cr, the resonant circulating current is diverted to the additional component and then the main switch is subjected to minimum current stresses same as those in their PWM counterparts. Moreover, the operation of the auxiliary switch in a half wave mode to prevent reverse resonant energy from freewheeling can be able to lessen the conduction losses. The operation principles of the proposed converters are analyzed using the PWM boost converter topology as an example. Theoretically analysis and experimental results verify the validity of the boost converter topology with the proposed circuit.
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