基于模块化多电平变换器的插电式混合电动汽车系统充电控制策略  

Charge Control Strategy of Plug-in Hybrid Electric Vehicle System Based on Modular Multilevel Converter

作　　者：银泽一 王广柱[1] 程振兴 Yin Zeyi;Wang Guangzhu;Cheng Zhenxing(Key Laboratory of Power System Intelligent Dispatch and Control Ministry of Education Shandong University,Jinan 250061 China)

机构地区：[1]电网智能化调度与控制教育部重点实验室(山东大学),济南250061

出　　处：《电工技术学报》2020年第6期1316-1326,共11页Transactions of China Electrotechnical Society

基　　金：山东省自然科学基金(ZR201709180272);国家自然科学基金(51577109)资助项目。

摘　　要：针对带独立发电机的混联式插电式混合电动汽车(PHEV),该文提出一种基于“背靠背”模块化多电平变换器(MMC)的一体化功率变换器拓扑及其外接单相交流电源充电控制方案。该方案利用MMC拓扑模块化结构的优势,分析了拓扑工作在单相交流充电模式下各桥臂、子模块的功率流向等特点,基于载波相移正弦脉冲宽度调制,提出适用于该控制策略的正弦半波调制方法,采用基于桥臂电流控制的电池荷电状态(SOC)层次化均衡策略,无需额外的充电电路以及复杂的电池管理系统(BMS),可实现各电池单元的快速均衡充电,避免因单体电池差异引起的整体储能系统循环寿命缩减。通过Simulink仿真及RT-LAB实时仿真器硬件在环实验,验证了该变换器的可行性和充电控制策略的有效性。For the plug-in hybrid electric vehicle(PHEV)with independent generator,an integrated power converter topology based on back-to-back modular multilevel converter(MMC)and its external single-phase AC power supply charging control scheme are proposed in this paper.Using the advantage of the modular structure of MMC topology,this paper analyzes the power flow direction of each arm and sub module in the single-phase AC charging mode,and a sinusoidal half-wave modulation method suitable for this control strategy based on the carrier phase-shift SPWM is proposed.The main advantage of the proposed state of charge(SOC)multi-hierarchy equalization strategy compared to existing ones is that it achieves fast balanced charging of each battery unit without additional charging circuits or a complicated battery management system(BMS).Therefore,it is able to avoid the reduction of the cycle life of the overall energy storage system caused by the difference in single cells.The feasibility of the converter and the effectiveness of the charging control strategy were verified by Simulink simulation and hardware in loop(HIL)experiments using RT-LAB real-time simulator.

关 键 词：插电式混合电动汽车 模块化多电平变换器 电池荷电状态均衡充电 桥臂电流控制 分层控制 

分 类 号：U469.72[机械工程—车辆工程]