多功能电动汽车模块化充放电系统控制研究  

Control Research on Multi-Functional EV Module Charging/Discharging System

作　　者：黄帅[1] 江道灼[1] 谷泓杰 梁一桥[1] 应群民[1] 

机构地区：[1]浙江大学电气工程学院,杭州市310027

出　　处：《电力建设》2015年第7期167-174,共8页Electric Power Construction

基　　金：国家自然科学基金项目(51361130150)~~

摘　　要：随着电动汽车动力电池需求日益扩大,其对电动汽车充电装置性能与功能的要求也随之提高,基于此,提出了一种多功能电动汽车模块化充放电系统。在此基础上,对由三相桥式AC/DC变换器和电磁隔离型双有源全桥DC/DC变换器构成的充放电模块的控制策略进行了研究。提出了可以提高充放电模块能量传输效率、功率密度等目标的两级变换器协调优化控制策略,分析得出了双移相控制下消除DC/DC变换器回流功率的条件,并通过仿真模拟动力电池的充放电过程验证了结论;在直流母线电压控制中引入充放电机负载的功率前馈补偿来提高动态和稳态性能,最后通过仿真模拟验证了控制策略的优越性。In viewof the increased demand of EV batteries as well as the performance requirement of charging device,a multi-functional modular（ dis） charging system for EV batteries was proposed. On this basis,the control technology of the module which consisted of a three-phase AC / DC converter and an isolated dual-active-bridge DC / DC converter was studied.A coordinated optimization control was proposed for two-stages converters to improve the energy transfer efficiency and power density of（ dis） charging module. Then,a detailed analysis was presented to discuss the condition of eliminating back-flowpower of DC / DC converter under double phase-shift control,and the conclusion was verified through the simulation of power battery＇s charging and discharging process. Furthermore,a newpower feed-forward compensation of charging / discharging motor load was introduced in DC bus voltage control to improve both the dynamic and static performance. Finally,the superiority of the proposed control strategy was verified through the simulation.

关 键 词：模块化充放电系统 双移相控制 回流功率 功率前馈补偿 

分 类 号：TM910.6[电气工程—电力电子与电力传动]