多相交错双向Buck-Boost变换器的研究  

Research on multiphase interleaved bidirectional Buck Boost converter

作　　者：张德超 杨艳 朱智富 ZHANG De chao;YANG Yan;ZHU Zhi fu(School of Electrical Engineering,Qingdao University,Qingdao 266071,China;School of Physical Sciences,Qingdao University,Qingdao 266071,China)

机构地区：[1]青岛大学电气工程学院,山东青岛266071 [2]青岛大学物理科学学院,山东青岛266071

出　　处：《电子设计工程》2020年第9期32-36,共5页Electronic Design Engineering

基　　金：山东省重点研发计划(2018GGX105012)。

摘　　要：在储能锂电池充放电模块的研究过程中,针对如何提高电力电子变换器的容量和改善其输出特性问题,提出一种多相交错双向Buck-Boost变换器。该变换器将六个同步双向Buck-Boost电路经过移相处理后交错并联,使输出电流为六相电流的叠加,由于各相电路输出的电流脉动相互抵消,总输出电流纹波变得很小。经仿真和实验,对单相和多相变换器的输出波形和数据进行对比分析,研究结果表明:该变换器可以有效地减小输出电流纹波,降低器件损耗,提高了电路的输送效率,并有利于减小器件的尺寸,提高电池模组的空间利用率。In the process of researching the charging and discharging module of lithium battery for energy storage,a multi phase interleaved bidirectional Buck Boost converter is proposed to improve the capacity and output characteristics of power electronic converter.The converter interleaves and parallels the six synchronous bidirectional Buck Boost circuits through phase shifting,so that the output current is a superposition of six phase chopping currents.Since the current ripples of each phase circuit cancel each other,the total output current ripple becomes smaller.Through simulation and experiment,the output waveforms and datas of single phase and multi phase converters are compared and analyzed.The results show that the converter can effectively reduce the output current ripple,reduce the device loss,improve the transmission efficiency of the circuit,and help to reduce the size of the device,improve the space utilization of the battery module.

关 键 词：BUCK-BOOST变换器 移相控制 交错并联 电流纹波 

分 类 号：TN702[电子电信—电路与系统]