三相交错并联DC/DC变换器充放电功率分配控制策略  

Charging and discharging power distribution control scheme for three-phase interleaved bidirectional DC/DC converter

作　　者：谢冰 纪延超[1] 王建赜[1] 王赫 马冲[2] XIE Bing;JI Yan-chao;WANG Jian-ze;WANG He;MA Chong(School of Electrical Engineering and Automation,Harbin Institute of Technology,Harbin 150001,China;State Grid Fushun Electric Power Supply Company,Fushun 113000,China)

机构地区：[1]哈尔滨工业大学电气工程及自动化学院,哈尔滨150001 [2]国家电网辽宁抚顺供电公司,辽宁抚顺113000

出　　处：《电机与控制学报》2018年第11期1-10,共10页Electric Machines and Control

基　　金：高校强省计划(AUOQ2153000710)

摘　　要：为了降低充放电电流纹波、延长蓄电池使用寿命,提高多变换器并联时功率均衡的速度,针对三相交错并联型DC/DC储能功率变换器,提出一种基于荷电状态幂次方的充放电功率分配控制策略。通过引入电压补偿系数,防止蓄电池放电过程中直流母线电压的跌落;以两阶段充电为例,提出功率修正算法,避免分配到的充电功率大于模块自身的额定功率,造成蓄电池过充。对不同均衡速率、多模块运行的暂态特性、充放电转换等条件下的变换器功率分配情况进行仿真验证,结果表明所提控制方法可以快速、有效的对蓄电池进行充放电功率分配控制。In order to reduce the charging/discharging current ripple,extend battery life,and increase the rate of power equalization of battery energy storage system(BESS)with multiple parallel converters,a power distribution control scheme based on the nth order of the state-of charge(SOC)for three-phase interleaved parallel DC/DC converter was presented.The voltage compensation coefficient was introduced to prevent the DC bus voltage drop in the battery discharging process.In the two-stage charging process,the power correction algorithm was proposed to avoid the power of each particular module exceeding its rated power.In the simulation performed,the power distribution of converter with different equalization rate,transient characteristics of multi-module operation,and charging and discharging mode conversion were simulated and verified.The results show the proposed scheme can quickly and effectively control the power distribution of the battery in the charging and discharging process.

关 键 词：三相交错并联 荷电状态 电压补偿系数 功率均衡 功率修正算法 

分 类 号：TM46[电气工程—电器] TM912