Modeling and simulation of a modified Zeta DC-DC converter with MPPT control for photovoltaic system applications

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Chinese explanation / 中文解读

中文解读待补充：本站会优先为光伏效率、钙钛矿太阳能电池、储能技术、太阳能热利用、BIPV、并网技术等高价值论文补充中文说明。

Original abstract

This work addresses the development and evaluation of a modified Zeta DC-DC converter incorporating an Up2 voltage multiplier cell, intended for photovoltaic systems. The central issue lies in the need to boost the low voltage of photovoltaic panels to levels suitable for DC bus operation, while maintaining high efficiency even under irradiance variations. The justification stems from the growing adoption of solar generation and the demand for converters with higher static gain and better dynamic performance. Thus, the main objective of this study is to design, model, and simulate the proposed converter, analyzing its behavior under ideal conditions and in scenarios with and without MPPT. The methodology consisted of: mathematical modeling of the topology; sizing of inductors, capacitors, and semiconductor devices; implementation of the model in PSIM software; detailed modeling of the photovoltaic array; application of the maximum power point tracking technique based on the Perturb and Observe algorithm; and execution of two simulation scenarios: ideal DC source feeding the converter and photovoltaic array feeding the converter with MPPT. The main results show that the converter operates according to the theoretical model, presenting errors below 3% in the ideal scenario. With MPPT enabled, the system extracted nearly all available power, reaching 550.91 W at the same irradiance level The results confirm the efficiency of the modified topology and highlight the importance of MPPT control to maximize energy extraction in photovoltaic systems.

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