Paper Infomation
Research on Three-Phase Inverters Control System by Differential Evolution Optimization
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Author: Huan Wang, Yuxing Dai
Abstract: In order to improve the effective and efficient of double closed-loop PI controller and reduce the total harmonic distortion (THD) of output voltage waveform, this paper presents a novel double closed-loop PI controller design method for a three-phase inverter based on the differential evolution (DE) algorithm. The basic idea behind the proposed method is firstly formulating the design problem of double close-loop PI controller for a three-phase inverter as a typical constrained optimization problem, where the THD and the integral of time weighted absolute error of output voltage waveform are weighed as the optimization objective function. After that, a DE algorithm is designed to solve this formulated problem. At last, the superiority of the proposed method to Z-N empirical method, genetic algorithm, particle swarm optimization is demonstrated by simulation and experimental results on a 6kW three-phase inverter including nominal condition and variable loads conditions.
Keywords: Three-phase Inverter, Differential Evolution, Double Closed-loop Controller
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