Novel non-isolated DC-DC converter using high frequency transformer

This paper presents design and analysis of a non-isolated, high voltage gain dc-dc converter, This converter is compared with two such topologies namely coupled inductor-switched capacitor boost converter and coupled inductor boost converter The proposed converter is designed using a high frequency transformer which combine both electrical and magnetic coupling, hence the converter is said to be non-isolated. The transformer provides hybrid switching technique which combines both conventional linear PWM and traditional resonant conversion. The transformer transfers the inductive and capacitive energy simultaneously to increase the voltage gain of the converter and decreases the size of the magnetic component. Switching losses of the proposed converter is reduced by incorporating the resonant mode, thereby increasing the efficiency. The voltage stress of all the devices are also reduced.