Research And Development Of 3KVA Two-Transistor Forward Converter With Interleaving Technology

In this article the operation of Interleaving Two-Transistor Forward topology and Average Current-Mode Control are discussed. In the first part, the operation of transformer and of LC loseless snubber is analyzed. In the second part, the small signal model for the control scheme is developed. Then the model is used to optimize regulator's parameters. Finally it is proved by experiment that this converter can be applied into industrial successfully.In the first chapter, the power circuits with isolation are discussed. Based on the above discussion Interleaving Two-Transistor Forward topology is chose. In the second chapter, the operation of Interleaving Two-Transistor Forward topology is analyzed. Chapter three presents the design procedure of a 3KVA DC/DC converter and experimental results, hi the forth chapter, the small signal model of Interleaving Two-Transistor Forward under average current-mode control is developed. The design method is also given in this chapter.