Research on No-affected Photovoltaic Grid-Connected Inverter by the Inductance Value

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

Zhang, Rongfei^1 ; Guan, Zichao^1 ; He, Ying^1 ; Xu, Chaoyi^1

School of Southwest Petroleum University, Chengdu, China^1

关键词: Bypass switches;    Common mode voltage;    Common-mode leakage currents;    Control methods;    Hysteresis current controllers;    Inductance values;    Operating modes;    Photovoltaic grids;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/452/3/032029/pdf
DOI  :  10.1088/1757-899X/452/3/032029

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

In order to solve the low adaptability problem of the common-mode voltage of the existing Non-isolated Photovoltaic Grid-Connected Inverter with H6-type (NPGCI-H6) is affected by the inductance matching factors and causes a large common-mode leakage current. Based on the idea of the parallel bypass switch on grid-connected filter inductor, this article put forward a no-affected photovoltaic grid-connected inverter by the inductance value (NPGCI-IV) circuit that is not affected by the inductance value matching and analyzed its operating modes and control methods. At the same time, this article designed a hysteresis current controller which is suitable for NPGCI-IV. Finally, the article studied the proposed photovoltaic grid-connected inverter circuit that is not affected by inductance matching and its control methods. The results showed the correctness of the proposed circuit and its control methods.