摘要
为减少家庭直流微电网中变换器的数量,提出了一种双向部分隔离型四端口直流变换器及其控制策略。变换器原边采用两个双向Buck-Boost电路与全桥变换器的桥壁开关管复用,构成两输入的双向交错Buck-Boost电路,副边采用半桥整流电路与同步Buck电路结合,形成高、低压两输出端口,并采用控制器变量竞争的方式实现变换器控制策略的切换。该四端口变换器(four-port converter,FPC)可以同时满足多电压等级的输入/输出,且功率能够双向流动,对比其他FPC,具有较高的功率密度和拓扑结构对称等优点。最后,在Simulink软件中搭建了仿真模型,并进行详细的试验分析。结果验证了理论分析的正确性以及控制策略的有效性。
To reduce the number of converters in a home DC microgrid,a bidirectional partially isolated four-port DC converter and its control strategy were proposed.The primary side of the converter used two bidirectional Buck-Boost circuits multiplexed with two bridge wall switch tubes of the full-bridge converter to form a two-input bidirectional interleaved Buck-Boost circuit;the secondary side used a combination of a half-bridge rectifier circuit and a synchronous Buck circuit so as to form two output ports of high and low voltages,and the controller variable competition was adopted to realize the switching of the control strategy of the converter.The four-port converter(FPC) can satisfy the input/output of multiple voltage levels at the same time,and the power can flow in both directions.Compared with other FPCs,it had the advantages of higher power density and symmetrical topology.Finally,a simulation model was built in Simulink software,and a detailed experimental analysis was carried out.The results verify the correctness of the theoretical analysis and the effectiveness of the control strategy.
作者
刘清茂
刘晓东
张前进
孙海涛
Liu Qingmao;Liu Xiaodong;Zhang Qianjin;Sun Haitao(Key Lab of Power Electronics&Motion Control,Anhui University of Technology,Ma’anshan Anhui 243032,China;State Grid Fushun Power Supply Co.,Ltd.,Fushun Liaoning 113008,China)
出处
《电气自动化》
2023年第5期88-91,共4页
Electrical Automation
基金
安徽省自然科学基金项目(1708085ME106)
安徽工业大学青年基金项目(QZ202106)。
关键词
家庭直流微电网
四端口变换器
多电压等级
双向流动
控制策略
household DC microgrid
four-port converter
multi-voltage class
bi-directional flow
control strategy
