Title :
A novel sensorless control strategy of doubly fed induction generator
Author :
Hao, X. ; Zhang, X. ; Zhang, C.W. ; Cao, R.X.
Author_Institution :
Sch. of Electr. Eng. & Autom., Hefei Univ. of Technol., Hefei, China
Abstract :
Available sensorless speed control strategies of doubly fed induction generator (DFIG) usually fail around the synchronous speed or limited by the operation mode (motor or generator). A novel control strategy is proposed in this paper. It uses the stator flux magnetizing current to estimate the rotor position and speed. This strategy works properly in the whole speed range. The principle of the speed and position estimation is explained and the corresponding speed regulation system is built. The proposed control strategy is examined in Simulink. The simulation results demonstrate the feasibility of the stator flux magnetizing current based rotor position and speed estimation as well as the control behaviors of the speed regulation system.
Keywords :
angular velocity control; asynchronous generators; machine vector control; position control; DFIG; Simulink; doubly fed induction generator; rotor position estimation; sensorless control strategy; speed regulation system; stator flux magnetizing current; Couplings; Induction generators; Inverters; Magnetic flux; Magnetic variables control; Power grids; Rotors; Sensorless control; Stator windings; Wind energy; Decoupled Control; Doubly Fed Induction Generator(DFIG); PI adjustor; Rotor position; Rotor speed; SVPWM; Sensorless; Stator flux magnetizing current; Wind energy;
Conference_Titel :
Sustainable Power Generation and Supply, 2009. SUPERGEN '09. International Conference on
Conference_Location :
Nanjing
Print_ISBN :
978-1-4244-4934-7
DOI :
10.1109/SUPERGEN.2009.5348213