High Efficiency Photovoltaic System with Fuzzy Logic Controller

B. Blanusa, Z. Ivanovic, B. Dokic
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Abstract

In this paper is presented high efficiency photovoltaic system (PV) with fuzzy logic controller. This system consists of PV panel, boost DC/DC converter and 24V DC load. Control module is realized with fuzzy controller. This controller has double function and it gives references for duty factor and switching frequency of the converter control signal. In this way the PV system works with applied maximum power point tracking (MPPT) method and switching frequency is changed on the way so the converter works with maximum efficiency in continuous current mode. Functionality of proposed model is tested through computer simulations in Matlab and on laboratory prototype.
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基于模糊控制器的高效光伏系统
提出了一种基于模糊逻辑控制器的高效光伏系统。该系统由光伏板、升压DC/DC变换器和24V直流负载组成。控制模块采用模糊控制器实现。该控制器具有双重功能,可为变换器控制信号的占空因数和开关频率提供参考。通过这种方式,光伏系统采用了最大功率点跟踪(MPPT)方法,并且在此过程中改变开关频率,从而使变流器在连续电流模式下以最大效率工作。通过Matlab仿真和实验室样机对模型的功能进行了验证。
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