A judging criterion of state-mutation switching cycle for sliding mode controlled non-isolated grid-connection inverter with H6-type

2018 3rd International Conference on Insulating Materials, Material Application and Electrical Engineering

材料科学;无线电电子学;电工学

Guan, Zichao^1 ; Chen, Rui^1 ; Li, Jiajie^1 ; Gou, Xu^2

School of Southwest Petroleum University, Chengdu, China^1

School of Chengdu University of Technology, Chengdu, China^2

关键词: Isolated grids;    Novel criterion;    Period doubling;    Root cause;    Sliding mode controller;    Sliding modes;    State variables;    Switching cycles;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/452/3/032030/pdf
DOI  :  10.1088/1757-899X/452/3/032030

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

To confirm state-mutation switching cycle of the sliding mode controlled non-isolated grid-connected inverter with H6-type (SMCNGI-H6) system, a novel judging criterion is proposed. With the case of folded diagram, state-mutation phenomenon is observed that the state variable changes from period-1 to period-doubling at a certain switching cycle. Then the root cause of state-mutation phenomenon is explored. Meanwhile, regarding the variation of state-mutation switching cycle with the parameters of sliding mode controller (SMC), a novel criterion is proposed to determine state-mutation switching cycle of the state variable. The numerical simulations and experimental results show that state-mutation switching cycle can be precisely determined by the judging criterion.