一个高升压DC-DC转换器与MPPT的光伏应用

2017 IEEE International Autumn Meeting on Power, Electronics and Computing (ROPEC) Pub Date : 2017-11-01 DOI:10.1109/ROPEC.2017.8261610

M. del Rosario Rivera-Espinosa, Alfredo Y. Alejandre-López, Jesus E. Pedraza-Barrón, P. García-Vite, Héctor R. Robles-Campos

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引用次数: 3

摘要

本文展示了用于光伏系统中最大功率提取的高升压变换器的性能。该转换器采用传统的升压，然后是基于二极管电容的乘法器，用于增加升压转换器的标称电压增益，从而在最大功率点降低占空比。为了确定最佳的等效输入阻抗，分析了变换器的主要特性。使用标准Perturb和Observe算法对所提出的转换器进行了评估。切换仿真证明了整个系统在辐照度干扰下的良好性能。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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A high step-up DC-DC converter with MPPT for PV application

This paper exhibits the performance of a high step-up converter employed for maximum power extraction in a photovoltaic system. The proposed converter is conformed by a conventional boost followed by a diode-capacitor-based multiplier for increasing the nominal voltage gain of the boost converter, resulting in a lower duty cycle at the maximum power point. The main characteristics of the converters are analyzed in order to determine an optimal equivalent input impedance. Evaluation of the proposed converter using standard Perturb and Observe algorithm is carried out. Switching simulations evidence the good performance of the whole system under irradiance disturbances.

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来源期刊

2017 IEEE International Autumn Meeting on Power, Electronics and Computing (ROPEC)

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