A Novel Bidirectional DC-DC Converter With Flyback Snubber For Hybrid Electric Vehicles | Abstract

ISSN ONLINE(2278-8875) PRINT (2320-3765)

Research Article Open Access

A Novel Bidirectional DC-DC Converter With Flyback Snubber For Hybrid Electric Vehicles

Abstract

Hybrid electric Vehicles combine the benefits of engine, electric motor and batteries to provide improved fuel economy. A converter is needed in hybrid Electric Vehicle for charging and discharging of the batteries. So a charging and discharging can be combined in one circuit topology known as bidirectional DC-DC converter. Here the output is completely isolated from input, so an isolated bidirectional Dc-DC converter is used. In the bidirectional DC-DC converter, there occurs overvoltage and overcurrent stress, which can be reduced by snubber circuits. Various technologies such as RCD, active clamp and flyback snubber for bidirectional DC-DC converter are compared. The bidirectional DC-DC converter with flyback snubber is explained in detail. The simulations are carried out using Simulink/MATLAB 7.6.0 (R2009b) package. The hardware is done using PIC16F877A, a microcontroller to generate the PWM pulses for the MOSFET switches so that harmonics in the circuit can be reduced.

Divya K.Nair, Elizabeth Rajan

To read the full article Download Full Article | Visit Full Article