PI Controller Based New Soft-Switching Boost Converter With A Coupled Inductor

Abstract

Novel full bridge DC-DC boost converters is mainly used in research applications, where the output voltage is measurably higher than the source voltage. In this project designing of a new topology of a non isolated boost converter with zero voltage switching control technique is discussed. To achieve ZVS condition the auxiliary circuit has a coupled inductor and a diode. The advantages of the ZVS are reverse recovery problem of MOSFET anti parallel body diodes are resolved and also the voltage and current stress on the switch components are reduced. This topology has a light weight and cost less. This technique will reduce the switching losses and improve the efficiency by ZVS technique, but it does not improve the turn-off switching losses by a ZCS technique. In this topology have two operational conditions depending on the situation of the duty cycle. The detailed operating analysis of the proposed converter and the design method of the main circuit are presented. To improve the effectiveness and feasibility of the proposed boost converter PI controller is used. Here microcontroller is used in the proposed topology.