电动汽车驱动复用升压技术  

Multiplexing Booster Technology for Electric Vehicle Drive

作　　者：侯文博 杨平[1] 陈可[1] 屈博 吴汶容 Hou Wenbo;Yang Ping;Chen Ke;Qu Bo;Wu Wenrong(School of Electrical Engineering Southwest Jiaotong University,Chengdu 611756 China;Department of Power Consumption and Energy Efficiency China Electric Power Research Institute Co.Ltd,Beijing 100192 China)

机构地区：[1]西南交通大学电气工程学院,成都611756 [2]中国电力科学研究院有限公司用电与能效研究所,北京100192

出　　处：《电工技术学报》2024年第S1期95-105,共11页Transactions of China Electrotechnical Society

基　　金：中央高校基本科研业务费专项资金(2682024GF001);四川省高效电源变换技术工程研究中心基金项目资助。

摘　　要：为提高电动汽车性能及充电速率,电动汽车正快速布局800 V高压架构;但与之匹配的高压充电桩对配电网质量要求高、建设成本高,应用和普及存在滞后性,目前主流直流充电桩仍为400 V低压平台。电动汽车高压架构如何在过渡阶段及未来兼容低压充电桩,是目前急需解决的问题。该文在分析研究高压架构应用现状和充电需求的基础上,利用驱动系统和充电装置不同时工作的特点,提出一种应用于电动汽车的驱动分时复用升压充电拓扑及控制策略。充电模式下复用电机绕组为储能电感,电机逆变控制器为斩波开关控制器,通过三相交错并联Boost电路实现大功率升压变换,从而提高800 V高压架构充电兼容能力,节约了整车空间、质量和成本,提高了汽车元器件及公共设施利用率,具有显著的经济效益及应用价值。Electric vehicles(EVs)are rapidly adopting 800 V high-voltage architectures to improve their performance,increase charging rates,and enhance overall efficiency.This shift promises significant benefits,such as shorter charging times,improved energy efficiency,and better compatibility with future fast-charging infrastructure.However,the deployment of charging infrastructure that can support 800V systems is currently limited due to high costs,stringent distribution network requirements,and slow adoption.Currently,most DC charging piles in use are based on a 400V low-voltage platform,which creates a challenge for the widespread adoption of 800V EVs.As a result,a critical issue that needs to be addressed is how to make the high-voltage architecture of electric vehicles compatible with the existing low-voltage charging piles during this transitional period and in the future.To address this compatibility challenge,this study proposes a novel time-sharing multiplexing step-up charging topology and control strategy designed for electric vehicles.This strategy takes advantage of the fact that the drive system and the charging device do not operate simultaneously.When the vehicle is in charging mode,the motor winding is used as an energy storage inductor,and the motor inverter controller is repurposed as the chopper switch controller.Through a three-phase staggered parallel Boost circuit,the system achieves high-power boost conversion,making it possible to charge 800V EVs from 400V charging piles.This innovative approach improves compatibility with existing infrastructure while saving vehicle space,reducing weight,and lowering costs.Additionally,it increases the utilization rate of existing automotive components and public facilities,offering significant economic benefits and practical application value.The first step in this research involved analyzing the 800V high-voltage architecture and its charging requirements,followed by an investigation of the transient characteristics of the converter.The coupling relationships an

关 键 词：电动汽车 驱动系统 分时复用 交错并联Boost电路 

分 类 号：TM614[电气工程—电力系统及自动化]