HIGH FREQUENCY STEP –UP DC –DC CONVERTER WITH HIGH EFFICIENCY FOR HIGH POWER APPLICATION AND THE PRINCIPLE OF ITS CONTROL.

B.Siva Ganesh; K.Sneha; Y.S.S.S. Rajeswari; P.Sailesh Babu

Volume : IV, Issue : XI, November - 2015

HIGH FREQUENCY STEP –UP DC –DC CONVERTER WITH HIGH EFFICIENCY FOR HIGH POWER APPLICATION AND THE PRINCIPLE OF ITS CONTROL.

B. Siva Ganesh, K. Sneha, Y. S. S. S. Rajeswari, P. Sailesh Babu

Abstract :

A novel Boost converter is implemented in this project. The circuit configuration of the proposed converter is very simple. The proposed converter employs a coupled inductor with same winding turns in the primary and secondary sides. In step–up mode, the primary and secondary windings of the coupled inductor are operated in parallel charge and series discharge to achieve high step–up voltage gain. In step–down mode, the primary and secondary windings of the coupled inductor are operated in series charge and parallel discharge to achieve high step–down voltage gain. Thus, the proposed converter has higher voltage gain than the conventional boost converter. Under same electric specifications for the proposed converter and the conventional boost converter, the average value of the switch current in the proposed converter is less than the conventional boost converter. The operating principle and steady–state analysis are discussed in detail. Finally, a 5/12–V prototype circuit is implemented to verify the performance for the automobile dual–battery system.