Artificial Intelligent Techniques for Electric and Hybrid Electric Vehicles

13A Review on Isolated DC–DC Converters Used in Renewable Power Generation Applications

Ingilala Jagadeesh and V. Indragandhi*

School of Electrical Engineering, Tamilnadu, India

Abstract

In this paper, we reported isolated DC–DC converters. Based on the review, the performances of isolated converters are evaluated. DC–DC CLCC and Dual active bridge (DAB) converters can attain bidirectional power flow, wide gain range, galvanic isolation, high power density and high energy efficiency for bidirectional electric vehicle charging systems. Gallium Nitride (GaN) devices have zero reverse recovery losses, very low gate drive losses and low output charge compared to a silicon MOSFET, which makes GaN devices relevant for high-efficiency power converters.

Keywords: Solar PV, isolated converters, electric vehicles (EV), bi-directional converters

13.1 Introduction

The maximum voltage gain of the cascaded boost converter, switched-capacitor converter and switched inductor converter are limited because of the high duty cycle. To overcome this problem, forward converter, bridge converter, fly-back and push-pull converter type isolated converters used to step-up the voltage [1]. Another common DC–DC isolated converter is the resonant converter, which can be used for the soft switching in the whole load spectrum. The full-bridge DC–DC current fed converter is used to reduce the input current ripple. To attain smooth switching conditions and to transfer energy the transformer parasitic elements ...