Title :
Adjustable speed generators for wind turbines based on doubly-fed induction machines and 4-quadrant IGBT converters linked to the rotor
Author :
Muller, S. ; Deicke, M. ; De Doncker, Rik W., Sr.
Author_Institution :
SEG GmbH & Co. KG, Kempen, Germany
Abstract :
Wind turbines are being built at power levels above 1.5 MW. Higher power levels are being anticipated for offshore applications. To limit mechanical stresses and power surges in these high power systems, speed control is necessary. The doubly-fed induction generator (DFIG) system is investigated as a viable alternative to adjust speed over a wide range while keeping the cost of the power converters minimal. A four-quadrant IGBT AC-to-AC converter is used to feed power bi-directionally to the rotor circuit. Decoupled control of active and reactive power can be realized using the dynamic model of the DFIG. Simulations and measurements confirm the validity of the model and the viability of the DFIG wind turbine
Keywords :
AC-AC power convertors; asynchronous generators; insulated gate bipolar transistors; machine control; power bipolar transistors; power control; rotors; variable speed gear; velocity control; wind power plants; wind turbines; 4-quadrant IGBT converters; AC/AC power conversion; active power; adjustable speed generators; bidirectional power flow; decoupled control; doubly-fed induction machines; mechanical stresses; offshore applications; power surges; reactive power; rotor; speed control; wind turbines; Costs; Induction generators; Insulated gate bipolar transistors; Power system control; Power systems; Stress; Surges; Velocity control; Wind energy generation; Wind turbines;
Conference_Titel :
Industry Applications Conference, 2000. Conference Record of the 2000 IEEE
Conference_Location :
Rome
Print_ISBN :
0-7803-6401-5
DOI :
10.1109/IAS.2000.883138
