TAILIEUCHUNG - Science and Communication Networks, Regeneration of ZVS converter with resonant inductor
This paper presents an analysis of the regeneration of zero-voltageswitching converter with resonant inductor, quasi-resonant converters, and full-bridge zero-voltage-switched PWM Converter. The design of a clamping circuit considering a saturable resonant inductor is presented and compared with the design of a clamping circuit with a linear resonant inductor. | Prasad et al, International Journal of Computer Science & Communication Networks,Vol 1(1),September-October 2011 Regeneration of ZVS converter with Resonant inductor Prasad 1 babu 2 3 1. Mr. Prasad, Asso. Professor in Dept. of EEE, Aditya College of Engg., Madanapalle 2. . Sai babu, Professor in Dept. of EEE, JNTU Kakinada. 3. , HOD in Dept. of EEE, Lakkireddy Balreddy Institute of Technology, Mylavaram. Abstract: This paper presents an analysis of the regeneration of zero-voltageswitching converter with resonant inductor, quasi-resonant converters, and full-bridge zero-voltage-switched PWM Converter. The design of a clamping circuit considering a saturable resonant inductor is presented and compared with the design of a clamping circuit with a linear resonant inductor. A diode model with reverse recovery is employed to simulate the effects. I. INTRODUCTION The zero-voltage-switching quasiresonant converters (ZVS-QRCs) are appropriate to operate at switching frequencies of the several MHz, due to the reduced switching losses. However, their practical applications are limited because of the following limitations. - High voltage stress on the Mosfet, - Dissipative "mutation at light load, - High frequency range to regulate the output voltage. Those difficulties arise because the energy stored in a linear inductor is Available online @ proportional to the square of the load current. The situation is different when the linear inductor is replaced by a saturable inductor. The full-bridge zero-voltageswitched PWM converter (FBZVSPWM) achieves ZVS by using the resonant inductor energy to discharge the output capacitance of the power switches, the load range under which ZVS is maintained is strongly dependent on the resonant inductance. For some applications which are sensitive to light load efficiency, a considerably large resonant inductor will be required to ensure ZVS .
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