Journal of Power Electronics

The Korean Institute of Power Electronics (전력전자학회)
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Compound control strategy for maximum power point tracking with flexible step-up converters for thin film photovoltaic module applications

  • Liu, Yuhang (The Key Laboratory of Solar Thermal Energy and Photovoltaic Systems, Institute of Electrical Engineering, Chinese Academy of Sciences) ;
  • Liu, Xiangxin (The Key Laboratory of Solar Thermal Energy and Photovoltaic Systems, Institute of Electrical Engineering, Chinese Academy of Sciences) ;
  • Zhang, Jianwei (College of Electric Power, Inner Mongolia University of Technology) ;
  • Zhang, Yufeng (The Key Laboratory of Solar Thermal Energy and Photovoltaic Systems, Institute of Electrical Engineering, Chinese Academy of Sciences) ;
  • Liu, Guangchen (College of Electric Power, Inner Mongolia University of Technology)
  • Received : 2021.03.03
  • Accepted : 2021.05.12
  • Published : 2021.09.20
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Abstract

This paper proposes a novel maximum power point tracking (MPPT) algorithm for a thin-film photovoltaic (PV) module with a flexible step-up DC-DC converter. To improve the voltage rating for the thin film module, a switch-inductor zero voltage transition (SIZVT) boost converter is proposed. In addition, the proposed methodology uses a multistage variable step size (MVSS) with a power close-loop control strategy (PCLC) for MPPT. The corresponding performances are compared with the classical fixed step size (FSS) algorithm and the conventional variable step size (CVSS) algorithm. Simulation results in MATLAB/Simulink and experimental tests with a 240 W prototype validate the proposed algorithm under a variety of conditions.

Keywords

Acknowledgement

This work is sponsored by the Chinese Academy of Sciences President's International Fellowship Initiative (no. 2020VEC0008), Lujiaxi International Team Project of CAS (no. GJTD-2018-05), Research Foundation of IEE, CAS (no. Y710411CSB), National Natural Science Foundation of China (no. 51867020), and Scientifc and Technological Research Foundation of Universities in the Inner Mongolia Autonomous Region (no. NJZY20070).

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