학술논문
A novel concept of unidirectional bridgeless combined boost-buck converter for EV battery chargers
Document Type
Conference
Author
Source
2015 IEEE 24th International Symposium on Industrial Electronics (ISIE) Industrial Electronics (ISIE), 2015 IEEE 24th International Symposium on. :190-195 Jun, 2015
Subject
Language
ISSN
2163-5137
2163-5145
2163-5145
Abstract
This paper presents a novel concept of unidirectional bridgeless combined boost-buck converter for electric vehicles (EVs) battery chargers. The proposed converter is composed by two power stages: an ac-dc front-end converter used to interface the power grid and the dc-link, and a dc-dc back-end converter used to interface the dc-link and the batteries. The ac-dc converter is a bridgeless boost-type converter and the dc-dc converter is an interleaved buck-type converter. The proposed converter operates with sinusoidal grid current and unitary power factor for all operating power levels. Along the paper is described in detail the proposed converter for EV battery chargers: the circuit topology, the different stages describing the principle of operation, the power control theory, and the current control strategy, for both converters. Along the paper are presented several simulation results for a maximum power of 3.5 kW.