多输入高频链逆变器及其控制策略研究  

Research on Multi-input High-frequency Link Inverter and Its Control Strategy

作　　者：林珊 赵涛[2] 农兴中 王春芳[2] LIN Shan;ZHAO Tao;NONG Xing-zhong;WANG Chun-fang(Guangzhou Metro Design and Research Institute Co.,Ltd.,Guangzhou 510010,China;不详)

机构地区：[1]广州地铁设计研究院股份有限公司,广东广州510010 [2]青岛大学,山东青岛266071

出　　处：《电力电子技术》2023年第2期15-17,29,共4页Power Electronics

摘　　要：多输入可再生能源供电系统存在多级功率变换、电路结构复杂、转换效率和功率密度低以及成本高等缺点。针对此问题,研究了一种多输入高频链逆变器及其控制策略,其电路拓扑具有结构简单、体积重量小、效率高、输入与输出电气隔离以及占空比调节范围宽等优点,所提出的控制策略实施简单且可实现多路输入源功率的合理分配、输出电压稳定以及输出电流总谐波畸变率(THD)较小。制作一台功率等级为1 kW的实验样机,通过实验结果证明了电路拓扑及所提控制策略的有效性。The multi-input renewable energy power supply system has the disadvantages of multi-stage power conversion,complex circuit structure,low conversion efficiency and power density,and high cost.To solve these problems,a multi-input high-frequency link inverter and corresponding control strategy are studied.Its circuit topology has the advantages of simple structure,small volume and weight,high efficiency,electrical isolation between input and output and wide duty cycle adjustment range.The proposed control strategy is simple to implement and can realize the reasonable distribution of multi-channel input source powers,stable output voltage and small total harmonic distortion rate(THD)of output current.An experimental prototype with power level of 1 kW is made, and the experimental results prove the effectiveness of the circuit topology and the proposed control strategy.

关 键 词：逆变器 多输入 控制策略 

分 类 号：TM464[电气工程—电器]