OUTPUT MAXIMIZATION CONTROL FOR VSCF WIND ENERGY CONVERSION SYSTEM USING EXTREMUM CONTROL STRATEGY  

作　　者：付大丰 马运东 

机构地区：[1]College of Automation Engineering,Nanjing University of Aeronautics and Astronautics

出　　处：《Transactions of Nanjing University of Aeronautics and Astronautics》2013年第2期185-192,共8页南京航空航天大学学报（英文版）

基　　金：Supported by the National Basic Research Program("973" Program)(2007CB210303);the Research Funding of Nanjing University of Aeronautics and Astronautrics(NP2011011)

摘　　要：The energy conversion optimization control strategy is presented for a family of horizontal-axis variablespeed fixed-pitch wind energy conversion systems,working in the partial load region.The system uses a variablespeed wind turbine(VSWT)driving a squirrel-cage induction generator(SCIG)connected to a grid.A new maximum power point tracking(MPPT)approach is proposed based on the extremum seeking control principles under the assumption that the wind turbine model and its parameters are poorly known.The aim is to drive the average position of the operation point close to optimality.Here the wind turbulence is used as search disturbance instead of inducing new sinusoidal search signals.The discrete Fourier transform(DFT)process of some available measures estimates the distance of operation point to optimality.The effectiveness of the proposed MPPT approach is validated under different operation conditions by numerical simulations in MATLAB/SIMULINK.The simulation results prove that the new approach can effectively suppress the vibration of system and enhance the dynamic performance of system.The energy conversion optimization control strategy is presented for a family of horizontal-axis variablespeed fixed-pitch wind energy conversion systems, working in the partial load region. The system uses a variablespeed wind turbine （VSWT） driving a squirrel-cage induction generator （SCIG） connected to a grid. A new maxi- mum power point tracking （MPPT） approach is proposed based on the extremum seeking control principles under the assumption that the wind turbine model and its parameters are poorly known. The aim is to drive the average position of the operation point close to optimality. Here the wind turbulence is used as search disturbance instead of inducing new sinusoidal search signals. The discrete Fourier transform （DFT） process of some available meas- ures estimates the distance of operation point to optimality. The effectiveness of the proposed MPPT approach is validated under different operation conditions by numerical simulations in MATLAB/SIMULINK. The simulation results prove that the new approach can effectively suppress the vibration of system and enhance the dynamic performance of system.

关 键 词：wind energy conversion systems maximum power point tracking extremum control strategy discrete Fourier transform 

分 类 号：TM930[电气工程—电力电子与电力传动]