Title :
Sensorless control of PM synchronous generators for micro wind turbines
Author :
Hai, Nguyen Thanh ; Jang, Suk-Ho ; Park, Hong-Geuk ; Lee, Dong-Choon
Author_Institution :
Dept. of Electr. Eng., Yeungnam Univ., Gyeongsan
Abstract :
Machine speed is usually required for maximum power point tracking (MPPT) control of permanent-magnet synchronous generators (PMSG). In this paper, a sensorless control method is applied to the PMSG for micro wind turbine systems. The machine speed is estimated by using a rotor flux observer and induced EMF signal, which can solve the delay problem of the estimated speed. For vector control of PMSG for micro wind turbines, a cost-effective back-to-back PWM-type converter consisting of a two-leg three phase PWM converter and a half-bridge PWM converter is used, by which generator output power can be increased both in steady state and in transient state. The validity of the proposed control algorithm has been verified by simulation results.
Keywords :
PWM invertors; machine control; magnetic flux; observers; permanent magnet generators; synchronous generators; wind turbines; PWM converter; induced EMF signal; machine speed estimation; maximum power point tracking control; micro wind turbines; permanent magnet synchronous generators; rotor flux observer; sensorless control; Delay estimation; Machine vector control; Power generation; Pulse width modulation; Pulse width modulation converters; Rotors; Sensorless control; Synchronous generators; Wind energy generation; Wind turbines; MPPT; Sensorless control; micro wind turbines; permanent magnet synchronous generator;
Conference_Titel :
Power and Energy Conference, 2008. PECon 2008. IEEE 2nd International
Conference_Location :
Johor Bahru
Print_ISBN :
978-1-4244-2404-7
Electronic_ISBN :
978-1-4244-2405-4
DOI :
10.1109/PECON.2008.4762607
