| Title |
ZCS-PWM Boost Converter Dropped Voltage and Current Stress of a Free-Wheeling Diode |
| Authors |
김명오(Kim, Myung-O) ; 김영석(Kim, Young-Seok) ; 이건행(Lee, Gun-Haeng) |
| Keywords |
환류 다이오드 ; 소프트-스위칭 ZCS-PWM ; Boost |
| Abstract |
This paper presents a boost circuit topology driving in high - frequency It solves the problem which arised from hard-switching in high-frequency using a period of resonant circuit and operating under the principle of ZCS turn-on and ZCZVS turn-off commutation schemes. In the existing circuit, it has the high voltage and current stress in free- wheeling diode. But in the proposed circuit, it has voltage and current stress which is lower than voltage and current stress of existing circuit with modifing a location of free-wheeling diode. In this paper, it explained the circuit operation of each mode and the waveform of each mode. Also the experiment results compare the voltage and current stress of free-wheeling diode in the existing circuit with the voltage and current stress of that in the proposed circuit. Moreover, it compares and analyzes the proposed circuit's efficiency with the existing circuit's efficiency according to the change of load current. |