一种无电压尖峰的改进型分裂Δ源逆变器  

An Improved SplitΔ-source Inverter without Voltage Spikes

作　　者：房绪鹏 孙翔飞 张胜男 赵冰冰 FANG Xupeng;SUN Xiangfei;ZHANG Shengnan;ZHAO Bingbing(College of Electrical Engineering and Automation,Shandong University of Science and Technology,Qingdao 266590)

机构地区：[1]山东科技大学电气与自动化工程学院,青岛266590

出　　处：《电气工程学报》2024年第1期235-242,共8页Journal of Electrical Engineering

基　　金：山东省重点研发计划资助项目(2019GGX103049)。

摘　　要：针对传统Δ源逆变器(Δ-source inverter,DSI)存在着开关管有较大的电压尖峰、高增益下输出电能质量差的问题,在分裂Δ源逆变器(Split Δ-source inverter,SDSI)的基础上,加入电压箝位单元,提出了一种改进型分裂Δ源逆变器(Improved split Δ-source inverter,ISDSI),研究了它的拓扑结构与工作状态,重点分析了其稳态升压特性与消除电压尖峰过程,并计算了各开关器件的电压应力。新提出的拓扑保留了SDSI升压占空比和调制因数同向调整的优点,这有助于改善高增益下输出电能质量。此外,新拓扑消除了开关管电压尖峰,降低了开关管和二极管的电压应力。Matlab/Simulink软件仿真和样机试验的结果验证了变换器的性能,证明了所提逆变器能够有效解决Δ源逆变器存在的突出问题。Aiming at the problems of theΔ-source inverter(DSI)of large voltage spike of the switch and poor output power quality under high gain,a voltage clamping cell is added on the basis of the splitΔ-source inverter(SDSI),and an improved splitΔ-source inverter(ISDSI)is proposed.The topological structure and working state of the inverter are studied,the steady-state voltage boosting characteristics and the process of eliminating voltage spikes are analyzed,and the voltage stress of each switching device is calculated.The proposed topology retains the advantages of SDSI boost duty ratio and modulation factor adjustment in the same direction,which helps to improve the output power quality at high voltage gain.The results of Matlab/Simulink software simulation and prototype experiment verify the performance of the converter,and prove the proposed inverter can effectively solve the outstanding problems existing inΔ-source inverter.

关 键 词：逆变器 电压尖峰 高电压增益 电压箝位单元 

分 类 号：TM464[电气工程—电器]