Optimized Controller Gains Using Grey Wolf Algorithm for Grid Tied Solar Power Generation with Improved Dynamics and Power Quality  

作　　者：Veramalla Rajagopal Danthurthi Sharath Gundeboina Vishwas Jampana Bangarraju Sabha Raj Arya Challa Venkatesh 

机构地区：[1]Department of Electrical and Electronics Engineering,Kakatiya Institute of Technology and Science Warangal,Telangana 506015,India [2]Department of Electrical and Electronics Engineering,B V Raju Institute of Technology,Telangana 502313,India [3]Department of Electrical Engineering,Sardar Vallabhbhai National Institute of Technology Surat,Gujarat 395007,India

出　　处：《Chinese Journal of Electrical Engineering》2022年第2期75-85,共11页中国电气工程学报（英文）

摘　　要：This study proposes a control algorithm based on synchronous reference frame theory with unit templates instead of a phase locked loop for grid-connected photovoltaic(PV)solar system,comprising solar PV panels,DC-DC converter,controller for maximum power point tracking,resistance capacitance ripple filter,insulated-gate bipolar transistor based controller,interfacing inductor,linear and nonlinear loads.The dynamic performance of the grid connected solar system depends on the effect operation of the control algorithm,comprising two proportional-integral controllers.These controllers estimate the reference solar-grid currents,which in turn generate pulses for the three-leg voltage source converter.The grey wolf optimization algorithm is used to optimize the controller gains of the proportional-integral controllers,resulting in excellent performance compared to that of existing optimization algorithms.The compensation for neutral current is provided by a star-delta transformer(non-isolated),and the proposed solar PV grid system provides zero voltage regulation and eliminates harmonics,in addition to load balancing.Maximum power extraction from the solar panel is achieved using the incremental conductance algorithm for the DC-DC converter supplying solar power to the DC bus capacitor,which in turn supplies this power to the grid with improved dynamics and quality.The solar system along with the control algorithm and controller is modeled using Simulink in Matlab 2019.

关 键 词：Control algorithm solar power generation DC-DC converter star-delta transformer maximum power point tracking power quality grey wolf optimization algorithm 

分 类 号：TM615[电气工程—电力系统及自动化]