Title :
A control method for maximum power point tracking of a PMSG-based WECS using online parameter identification of wind turbine
Author :
Izumi, Yuya ; Pratap, Alok ; Uchida, Kosuke ; Uehara, Akie ; Senjyu, Tomonobu ; Yona, Atsushi ; Funabashi, Toshihisa
Author_Institution :
Dept. of Electr. & Electron. Eng., Univ. of the Ryukyus, Okinawa, Japan
Abstract :
This paper presents a control method for maximum power point tracking (MPPT) of a wind energy conversion system (WECS) using online parameter identification. The WECS is based on a permanent magnet synchronous generator (PMSG) and transmits its electrical power to an AC grid through an AC-DC-AC converter system with IGBT pulse-width modulation (PWM) converters. The generator-side converter optimally controls the torque of the PMSG to extract maximum wind power. On the other hand, the grid-side inverter controls the DC-link and grid voltages for stable operation of the WECS. Since an optimum torque of the PMSG may vary due to wind turbulence, parameter error, and other unexpected conditions, the optimum torque of the PMSG is determined by using the online parameter identification in this paper. The proposed method provides WECS operation with the maximum efficiency and economical benefit. Effectiveness of the proposed method is verified by the numerical simulations.
Keywords :
AC-DC power convertors; DC-AC power convertors; PWM power convertors; insulated gate bipolar transistors; invertors; machine control; maximum power point trackers; numerical analysis; optimal control; permanent magnet motors; power bipolar transistors; power generation control; synchronous generators; torque control; voltage control; wind power plants; wind turbines; AC grid; AC-DC-AC converter system; DC-link control; IGBT PWM converters; IGBT pulse-width modulation converters; MPPT control method; PMSG-based WECS; electrical power; generator-side converter; grid voltage control; grid-side inverter; maximum power point tracking control method; numerical simulations; online parameter identification; optimal controls; permanent magnet synchronous generator; torque control; wind energy conversion system; wind power; wind turbine; wind turbulence; Equations; Hydraulic turbines; Inverters; Mathematical model; Pulse width modulation; Welding;
Conference_Titel :
Power Electronics and Drive Systems (PEDS), 2011 IEEE Ninth International Conference on
Conference_Location :
Singapore
Print_ISBN :
978-1-61284-999-7
Electronic_ISBN :
2164-5256
DOI :
10.1109/PEDS.2011.6147401
