Design and Implementation of bidirectional DC DC converter fed DC motor

Abstract

The work aims at designing and implementation of a bidirectional DC DC converter fed PMDC motor which can be used as the traction system for hybrid electric vehicle(HEV) system. As in designing the HEV the main problem is of battery storage system and by using the bidirectional converter we can improve the overall efficiency of the HEV. In bidirectional converter as energy flow can take place in either direction, it can work in both the motoring and regenerative mode. In motoring mode, the converter acts as a boost converter and the voltage will be boosted and hence the current will be less so the I2R loss will be less and system will be more efficient but when we talk about regenerative mode the system will act as a buck converter and the battery will be charged in the regenerative mode. So the overall efficiency of the system will increase. ZVRT technique is used to reduce the switching losses.