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首页> 外文期刊>International journal of hydrogen energy >Fuzzy logic based MPPT controller for high conversion ratio quadratic boost converter
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Fuzzy logic based MPPT controller for high conversion ratio quadratic boost converter

机译：基于模糊逻辑的MPPT控制器用于高转换比二次升压转换器

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摘要

In this study, a maximum power point tracking DC DC quadratic boost converter for high conversion ratio required applications is proposed. The proposed system consists of a quadratic boost converter with high step-up ratio and fuzzy logic based maximum power point tracking controller. The fuzzy logic based maximum power point tracking algorithm is used to generate the converter reference signal, and the change in PV power and the change in PV voltage are selected as fuzzy variables. Determined membership functions and fuzzy rules which are design to track the maximum power point of the PV system generates the output signal of the fuzzy logic controller's output. It is seen from MATLAB/Simulink simulation and experimental results that the quadratic boost converter provides high step-up function with robustness and stability. In addition, this process is achieved with low duty cycle ratio when compared to the traditional boost converter. Furthermore, simulation and experimental results have validated that the proposed system has fast response, and it is suitable for rapidly changing atmospheric conditions. The steady state maximum power point tracking efficiency of the proposed system is obtained as 99.10%. Besides, the output power oscillation of the converter, which is a major problem of the maximum power point trackers, is also reduced. (C) 2017 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
机译：在这项研究中，提出了针对高转换率要求的应用的最大功率点跟踪DC DC二次升压转换器。所提出的系统由具有高升压比的二次升压转换器和基于模糊逻辑的最大功率点跟踪控制器组成。使用基于模糊逻辑的最大功率点跟踪算法生成转换器参考信号，并选择PV功率的变化和PV电压的变化作为模糊变量。用于跟踪光伏系统最大功率点的确定的隶属函数和模糊规则会生成模糊逻辑控制器输出的输出信号。从MATLAB / Simulink仿真和实验结果可以看出，二次升压转换器提供了具有鲁棒性和稳定性的高升压功能。另外，与传统的升压转换器相比，该工艺以低占空比实现。此外，仿真和实验结果已经验证了所提出的系统具有快速响应，并且适用于快速变化的大气条件。该系统的稳态最大功率点跟踪效率为99.10％。此外，还减少了转换器的输出功率振荡，这是最大功率点跟踪器的主要问题。 （C）2017氢能出版物有限公司。由Elsevier Ltd.出版。保留所有权利。

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