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Application of a Fuzzy Self-tuning PI Controller in a Grid-Connected PV Generation System

机译:模糊自整定PI控制器在并网光伏发电系统中的应用

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This paper presents the mathematical model of the pv array and analyzes the structure of a three-phase grid-connected PV generation system (GCPS). In order to get better waveforms of grid current, a fuzzy self-tuning PI controller is introduced into the GCPS, and it can tune the PI controller parameters automatically according to changes of system parameters. In order to realize the maximum power transmission with unit power factor of the GCPS, the maximum power point track (MPPT) control and the control on active power and reactive respectively with fuzzy PI controller are also used. Finally a pv array model and a MPPT model are developed, and the proposed GCPS is simulated in PSCAD/EMTDC. The simulation results show that the fuzzy self-tuning PI controller for the GCPS is effective.
机译:本文介绍了光伏阵列的数学模型,并分析了三相并网光伏发电系统(GCPS)的结构。为了获得更好的电网电流波形,在GCPS中引入了模糊自整定PI控制器,它可以根据系统参数的变化自动调整PI控制器的参数。为了实现GCPS的单位功率因数最大功率传输,还分别采用了最大功率点跟踪(MPPT)控制和分别采用模糊PI控制器进行有功和无功控制。最后,开发了光伏阵列模型和MPPT模型,并在PSCAD / EMTDC中对提出的GCPS进行了仿真。仿真结果表明,模糊自整定PI控制器对GCPS是有效的。

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