DocumentCode :
2571252
Title :
Control systems of wind turbine generators: an Italian experience
Author :
Corsi, S. ; Pozzi, M.
Author_Institution :
Centro Elettrotecnico Sperimentale Italiano, Milan, Italy
Volume :
3
fYear :
2003
fDate :
13-17 July 2003
Abstract :
The control system of a wind turbine plays a crucial role in determining its dynamic performances in all the possible operating conditions, along the generator start-up and shut-down maneuvers, as well as during the production phase. In particular the regulation of blade pitch and nacelle alignment to the wind direction permit to maximize the power production or to limit the generated power according with the system mechanical design. Growing the wind speed over the maximum allowed threshold, defined for security reason, the control system has to minimize the risk of mechanical or electrical damages, through recovering the wind generator into the most safe blade and nacelle position. The dynamic characteristics of the control system must be properly defined and designed to achieve satisfactory generated power quality and system security, availability and reliability. Therefore great attention has to be kept in the theoretical design task, as well as in the experimental validation phase, in order to assure the correct operation of the control system both in normal and in perturbed conditions. During the field tests and mainly in the system commissioning activities, it is also essential to check deeply the dynamic responses of the wind turbine and to tune finely the regulation parameters of its control system. The paper deals with the long experience on the subject of the largest Italian electricity company (ENEL) and describes the control system peculiarities and field performances of three early prototypes: the small size ENEL-FIAT (two-blades, fixed speed, pitch controlled 50 kW asynchronous machine), the medium size MEDIT-320 (two-blades, fixed speed, pitch controlled 320 kW asynchronous turbine) and the large size GAMMA-60 (two-blades, variable speed, yaw controlled 1500 kW synchronous generator with static converter).
Keywords :
asynchronous machines; machine control; power generation reliability; synchronous generators; turbogenerators; velocity control; wind turbines; 1500 kW; 320 kW; 50 kW; asynchronous machine; blade pitch; control systems; electricity company; generated power; generator start-up; nacelle alignment; power production; power system availability; power system reliability; power system security; regulation parameters; shut-down maneuvers; wind turbine generators; Blades; Control systems; Electric variables control; Power generation; Power system reliability; Power system security; Production systems; Size control; Wind energy generation; Wind turbines;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Power Engineering Society General Meeting, 2003, IEEE
Print_ISBN :
0-7803-7989-6
Type :
conf
DOI :
10.1109/PES.2003.1267469
Filename :
1267469
Link To Document :
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