基于光伏集成变换器的发电系统工作机理研究  

Research on Working Mechanism of Power Generation System Based on Photovoltaic Integrated Converter

作　　者：张琦[1,2] 刘佳昊 孙向东[1,2] 杨惠[1] 任碧莹[1] 安少亮[1] 康渊荣 ZHANG Qi;LIU Jiahao;SUN Xiangdong;YANG Hui;REN Biying;AN Shaoliang;KANG Yuanrong(Electrical Engineering Department,Xi’an University of Technology,Xi’an 710048,Shaanxi,China;Shaanxi Key Laboratory of Complex System Control and Intelligent Information Processing,Xi’an University of Technology,Xi’an 710048,Shaanxi,China)

机构地区：[1]西安理工大学电气系,陕西西安710048 [2]西安理工大学陕西省复杂系统控制与智能信息处理重点实验室,陕西西安710048

出　　处：《电气传动》2019年第11期57-63,共7页Electric Drive

基　　金：国家自然科学基金项目（51607142）;陕西省自然科学基金项目（2017JQ5102）;陕西省教育厅重点实验室基金（17JS087）

摘　　要：对于光伏阵列部分阴影问题,提出由光伏组件和与其并联的双向反激变换器组成的光伏组件集成变换器(PVMIC),并由PVMIC组成新型光伏发电系统。针对PVMIC的睡眠、馈能、旁路二极管、DC module4种工作模式进行分析,深入研究了各种工作模式的运行条件,使得新型光伏发电系统可以根据运行条件选择不同的工作模式,保证系统始终工作在最优状态,所以该系统即使在阴影条件下也具有较高的系统转换效率和更大的光伏阵列输出功率。通过仿真和实验验证了其解决阴影问题的可行性。For the partial shadow problem of photovoltaic arrays,a photovoltaic module integrated converter(PVMIC)which was composed of a photovoltaic module and a bidirectional flyback converter connected in parallel was proposed,and a new photovoltaic power generation system which was composed of PVMIC was proposed. According to the analysis for four working modes of sleep,feed,bypass diode and DC module of PVMIC,the operating conditions of various working modes were deeply studied,so that the new photovoltaic power generation system could select different working modes according to operating conditions to ensure that the system could always work in an optimal state,the system had higher system conversion efficiency and greater PV array output power even under shadow conditions. The feasibility of solving the shadow problem is verified by simulation and experiment.

关 键 词：光伏发电 部分阴影 光伏组件集成变换器 

分 类 号：TM46[电气工程—电器]