多端口能量路由器储能接口单元准三模式控制  

An Improved Three-mode Control for the Multiport Energy Touter Energy Storage Interface Unit

作　　者：沈建良 黄志华 郑仲舒 张犁 SHEN Jian-liang;HUANG Zhi-hua;ZHENG Zhong-shu;ZHANG Li(Stale Grid Huzhou Power Supply Company,Huzhou 313000,China;不详)

机构地区：[1]国网湖州供电公司,浙江湖州313000 [2]河海大学,能源与电气学院,江苏南京211100

出　　处：《电力电子技术》2021年第7期126-129,共4页Power Electronics

基　　金：国网浙江省电力有限公司集体企业科技项目(2019-HUZJTKJ-14)。

摘　　要：四开关升降压(FSBB)变换器具有双向宽电压增益特性,故可作为多端口能量路由器储能接口变换器拓扑。当FSBB两端口电压相近时,传统三模式控制的Buck-Boost模式会增大电感电流纹波,导致开关管电流应力和损耗增大。此处提出一种改进三模式控制,采用双滞环避免FSBB变换器在Buck和Boost模式频繁切换,通过内移相实现FSBB变换器在Buck-Boost模式的电压增益调节。搭建了1台5 kW的工程样机,实验结果表明所提改进三模式控制在Buck-Boost模式可降低电感电流纹波和开关管电流应力。The four-switch Buck-Boost(FSBB)converter can be used as the candidate topology of the energy storage interface unit for multiport energy routers since it has a bidirectional wide voltage gain.When the input and output voltages of the FSBB converter are almost equal,the inductor current ripple of the Buck-Boost mode is increased by using the conventional three-mode modulation.As a result,the current stress and power losses of the switching devices are increased.An improved three-mode modulation is proposed to avoid frequent switching between Buck and Boost modes by using a dual hysteresis loop,and the voltage gain adjustment of FSBB converter in Buck-Boost mode is realized by an internal phase shift control.A 5 kW prototype is built to verify the effectiveness of proposed scheme.

关 键 词：变换器 双滞环 内移相 

分 类 号：TM46[电气工程—电器]