Aimed at solving the issues of closed hardware and large space of the PV-storage experimental platform,a project-driven,modular three-port DC converter experimental platform was developed in this paper.Firstly,an innovative experimental platform based on the three-port DC converter was constructed.Secondly,power conversion topology for photovoltaic,energy storage,and load were designed.Then the converter control system was established,the control strategy was investigated,and power circuit inductance,capacitance parameters,with system circuit were given in detail.Lately,the control system software was carried out.Finally the test and analysis of the software and hardware experimental platform were completed.The experimental results show that the three-port DC converter load voltage adjustment rate is less than 2%,and the system efficiency is higher than 94%,and maximum power point tracking(MPPT)on the photovoltaic side,and stable charge and discharge of the battery are achieved.
关键词
储能/模块化/三端口直流变换器/最大功率跟踪
Key words
energy storage/modularization/three-port DC converter/maximum power point tracking(MPPT)
维普
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