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.

本文提出了一种新颖的最大功率点跟踪 (MPPT) 算法，用于具有灵活升压 DC-DC 转换器的薄膜光伏 (PV) 模块。为了提高薄膜模块的额定电压，提出了一种开关电感零电压转换 (SIZVT) 升压转换器。此外，所提出的方法使用具有功率闭环控制策略 (PCLC) 的多级可变步长 (MVSS) 来实现 MPPT。相应的性能与经典的固定步长（FSS）算法和传统的可变步长（CVSS）算法进行了比较。MATLAB/Simulink 中的仿真结果和使用 240 W 原型的实验测试在各种条件下验证了所提出的算法。