混合动力电动车用高效双向直流变换器的设计  

Design of high efficiency bidirectional DC converter for hybrid electric vehicles

作　　者：王飞[1] 陶彩霞[1] 高锋阳[1] Wang Fei;Tao Caixia;Gao Fengyang(School of Automation and Electrical Engineering,Lanzhou Jiaotong University,Lanzhou 730070,China)

机构地区：[1]兰州交通大学自动化与电气工程学院,兰州730070

出　　处：《电测与仪表》2020年第7期134-140,共7页Electrical Measurement & Instrumentation

基　　金：国家重点研发计划资助(2017YFB1201003-020)。

摘　　要：针对传统以蓄电池为动力的电动车存在的问题,提出以超级电容加双向DC-DC变换器为辅助动力源的方案。该方案在弥补蓄电池缺陷的同时,提高了整个系统的能源利用效率,并增加了电动车的续驶里程。在简要介绍了超级电容储能系统的基础上,主要研究和设计了系统中的核心部件—双向DC-DC变换器,分析了双向DC-DC变换器的工作模式和控制策略,并对双向变换器进行了软开关分析。Matlab仿真所得的相应波形验证了方案的有效性。Aiming at the problems existing in traditional battery-powered electric vehicles,a supercapacitor plus bidirectional DC-DC converter is proposed as an auxiliary power source.This solution improves the energy efficiency of the entire system while making up for battery defects,as well as increasing the driving range of electric vehicles.Based on a brief introduction of the supercapacitor energy storage system,the bidirectional DC-DC converter,as the core component of the system,is studied and designed.The working mode and control strategy of the bidirectional DC-DC converter are analyzed.The bidirectional converter performs a soft switching analysis.The corresponding waveform obtained by Matlab simulation verifies the effectiveness of the proposed scheme.

关 键 词：电动车 蓄电池 超级电容 双向DC-DC变换器 

分 类 号：TM93[电气工程—电力电子与电力传动] TN972[电子电信—信号与信息处理]