An efficient soft-switched vienna rectifier topology for EV battery chargers

Energy Reports

Salman Habib¹  Jiang Chuanwen²  Muhammad Mansoor Khan²  Abdar Ali²  Zhou Yan³ 

[1] College of Energy and Electrical Engineering, Hohai University, Nanjing 211100, China;Key Laboratory of Control of Power Transmission and Conversion, Ministry of Education, Electrical Engineering Department, School of Electronic, Information and Electrical Engineering (SEIEE), Shanghai Jiao Tong University, Shanghai 200240, China;State Grid Changzhou Power Supply Company, Jiangsu, China;

关键词: Electric vehicles (EVs);    Soft switching (SS);    Front-end PFC converters;    Snubber circuits;    Battery chargers;   

DOI  :  

来源: DOAJ

【 摘 要 】

The requirement of high power rated, efficient and high power density grid connected converters has increased due to their extended use in multiple applications such as battery chargers. The proliferation of electric vehicles (EVs) in the transportation market is essentially associated with the performance and reliability of battery chargers. An efficient, compact and fast battery charger is indispensable in order to provide a way to charge an EV in a short time. In view of this fact, this article proposes a soft-switching three-level T-type vienna rectifier, which can be used as a front-end power stage converter in an on-board EV battery charger. The proposed topology achieves high efficiency and high power density by employing soft-switching strategy, which is achieved by incorporating a simple auxiliary network in the proposed circuit. The reduced component stresses and simple control strategy make it an appealing candidate for EV industries to develop this front-end PFC rectifier as a fast battery charger. The high switching operation with reduced power losses, regulated DC at the output, low-harmonic grid current and power factor correction operation are achieved with the proposed topology. The construction, operating principle and simulation analysis of the proposed converter are discussed in detail. In order to show the stand-point of the proposed scheme, a fair comparison of the proposed soft-switched converter with an existing soft-switched 3-level neutral-point diode-clamped converter is carried out in terms of the number of components and complexity in the PWM signals generation. Additionally, an efficiency comparison of the suggested converter is carried out with some existing well-known rectifier topologies at different power loads. The practical implementation of the proposed power converter scheme is checked by building a laboratory-prototype to perform an experimental analysis.

【 授权许可】

Unknown