| Title |
A Study on the Three-Level Converter using Primary Auxiliary Circuit |
| Authors |
배진용(Bae, Jin-Yong) ; 김용(Kim, Yong) ; 조규만(Cho, Kyu-Man) |
| Keywords |
Three-Level Converter ; Primary Auxiliary Circuit ; ZVS(Zero Voltage Switching) ; ZVZCS(Zero Voltage and Zero Current Switching) |
| Abstract |
A New ZVS(Zero Voltage Switching) and ZVZCS(Zero Voltage and Zero Current Switching) Three-Level Converter is proposed. The proposed converter presented in this paper used a phase shift control with a flying capacitor in the primary side to achieve ZVS for the all switch. A primary auxiliary circuit, which consists of one coupled inductor, is added in the primary to provide ZVZCS conditions to primary switches. Many advantages including simple circuit topology high efficiency, and low cost make this converter attractive for high power applications. The principle of operation, feature and design considerations are illustrated and verified through the experiment with a 2kW(27V, 74A) 40 kHz IGBT based experimental circuit. |