准单级隔离Buck-Boost型多输入逆变器  

Quasi Single Stage Isolated Buck-Boost Mode Multi-Input Inverter

作　　者：江加辉[1] 陈道炼[1] 佘敏 Jiang Jiahui;Chen Daolian;She Min(Fujian Key Laboratory of New Energy Generation and Power Conversion Fuzhou University Fuzhou 350116 China)

机构地区：[1]福州大学福建省新能源发电与电能变换重点实验室,福州350116

出　　处：《电工技术学报》2018年第18期4323-4334,共12页Transactions of China Electrotechnical Society

基　　金：国家自然科学基金资助项目(51537001)

摘　　要：提出一类准单级隔离Buck-Boost型多输入逆变器电路结构与拓扑族,及具有不同供电模式平滑无缝切换的主从功率分配能量管理正弦脉宽调制(SPWM)控制策略,并对这类多输入逆变器的电路结构与拓扑、稳态原理特性、多输入源占空比之间的关系、能量管理控制策略和关键电路参数设计准则等进行深入的理论分析,并获得重要结论。该电路结构是由带多输入选择开关串联电路的双向隔离Buck-Boost直流变换器和极性反转逆变桥级联构成,包括单管式等4个拓扑。该主从功率分配能量管理SPWM控制策略是由n-1个输入电压环、具有n路功率分配、带功率独立控制的输出电压瞬时值反馈环三部分构成,能实现不同供电模式的平滑无缝切换。设计并研制的500V·A、DC 80V^110V/AC 220V(50Hz)多输入逆变器样机,具有变换效率高、输出波形质量高、带载能力强、不同供电模式间平滑无缝切换等优良性能。This paper proposes the circuit configuration,circuit topological family and master-slave power management SPWM control strategy with smooth and seamless handover in different power supply modes of quasi single stage isolated Buck-Boost mode multi-input inverter.The circuit configuration,topologies,power management strategy,characteristic of steady principle,duty ratio relationship of the multi-input sources and design criteria for key circuit parameters are fully investigated.The circuit configuration is composed of a bidirectional isolated Buck-Boost converter with multi-input selected switches in series and an unfold bridge,including four topologies such as one-transistor mode.The master-slave power management strategy is composed of n?1 input voltage loops,n power distribution circuits and instantaneous output voltage loop with independent power control,which can realize smooth and seamless handover in different power supply modes.The designed and developed 500V·A DC 80~110V/AC 220V 50Hz prototype of multi-input inverter has excellent performances such as high conversion efficiency,high quality of output waveforms,strong load adaptability,smooth and seamless handover in different power supply modes.

关 键 词：多输入逆变器 隔离Buck-Boost 变换器 准单级 主从功率能量管理 平滑无缝切换 

分 类 号：TM46[电气工程—电器]