一种基于三有源桥的SiC交直流变换器研究  

Research on SiC AC/DC Converter Based on Three Active Bridges

作　　者：彭斐[1] 翁楚迪 PENG Fei;WENG Chu-di(Hangzhou Vocational and Technical College,Hangzhou 310018,China)

机构地区：[1]杭州职业技术学院信息工程学院,浙江杭州310018 [2]浙江大学电气工程学院,浙江杭州310027

出　　处：《电力电子技术》2021年第10期60-64,共5页Power Electronics

基　　金：浙江省重点研发计划(2019C01150)。

摘　　要：为实现分布式电源尤其是光伏的灵活接入,提出了一种三端口交直流变换器拓扑结构与设计方案,采用三有源桥DC/DC变换器和三相DC/AC变换器的组合,为分布式电源、负载与电网之间提供灵活的连接方式。研制了基于三有源桥的碳化硅(SiC)交直流变换器样机,设计并调试通讯系统,通过上位机协调各模块执行控制算法,以满足不同工况下交直流混合的控制需要。根据实际应用场景设计了两种工况,并通过仿真和实验测试样机在两种模式下电压控制和主从均流算法的可靠性,同时测定整机运行的效率。实验结果验证了该变换器具有良好的稳定性和较高的运行效率,对交直流混合配电的相关研究具有重要意义。In order to study application of three-port power electronic converter in distributed renewable energy microgrid,a prototype of silicon carbide(SiC) AC/DC converter based on three active bridges is developed.The prototype adopts the combination of three active bridge DC/DC converter and three-phase DC/AC converter,which provides flexible connection between distributed generations,loads and power grid.The communication system is designed and debugged,and control algorithm is implemented by upper computer to meet control needs of AC/DC hybrid under different working conditions.According to the actual application scenario,two working conditions are designed,the reliability of voltage control and master-slave current sharing algorithm are tested through simulation and experiment,and the operation efficiency of the whole machine is measured.The experimental results verify that the converter has good stability and high operation efficiency,which is of great significance to the related research of AC/DC hybrid distribution.

关 键 词：变换器 三有源桥 主从均流算法 

分 类 号：TM46[电气工程—电器]