Title :
Analysis of double objectives control for wind power generation system with frequency separation
Author :
Feng Xu ; Jianzhong Zhang ; Ming Cheng
Author_Institution :
Sch. of Electr. Eng., Southeast Univ., Nanjing, China
Abstract :
In double objectives control of wind power generation system, two components, a slowly varying component and a rapidly varying component are considered for wind model. This paper proposes a frequency separation guideline to get these two components for better realization of double objectives control. It makes use of the results of power spectral density analysis to determine the cutoff frequency of filter. Then a third order Butterworth is designed according to the 85% power spectrum. Simulation model of a variable-speed, fixed pitch wind turbine with permanent magnet synchronous generator is constructed. Simulation results testify the feasibility and effectivity of the proposed frequency separation guideline. It also show that maximization of wind power capture and minimization of turbine torque variations are not only related with weighting coefficient, but also depends on the filter design, especially cutoff frequency of the frequency separation filter.
Keywords :
Butterworth filters; minimisation; permanent magnet generators; power generation control; synchronous generators; torque; wind power; wind turbines; double objectives control; fixed pitch wind turbine; frequency separation filter; maximization; minimization; permanent magnet synchronous generator; power spectral density analysis; third order Butterworth; turbine torque variations; variable-speed; wind power capture; wind power generation system; Cutoff frequency; Frequency control; Low pass filters; Time frequency analysis; Torque; Wind power generation; Wind speed; Butterworth filter; MPPT; PSD; double objectives control; frequency separation;
Conference_Titel :
Electric Utility Deregulation and Restructuring and Power Technologies (DRPT), 2011 4th International Conference on
Conference_Location :
Weihai, Shandong
Print_ISBN :
978-1-4577-0364-5
DOI :
10.1109/DRPT.2011.5994109