Performance analysis of a variable structure controller for power regulation of WECS operating in the stall region

TítuloPerformance analysis of a variable structure controller for power regulation of WECS operating in the stall region
Tipo de PublicaciónJournal Article
Año de Publicación2001
AutoresDe Battista H, Mantz RJ, Christiansen CF
JournalInternational Journal of Energy Research
Volumen25
Páginas1345–1357
ISSN1099-114X
Palabras claveenergy conversion, Power control, variable structure systems, Wind energy
Resumen

This paper deals with power regulation in variable speed wind energy conversion systems. The importance of power control in the stall region is stressed. This mode of operation is characterized by a non-minimum phase behaviour. A variable structure controller is described that provides stability by means of speed feedback and is robust to grid disturbances and model uncertainties. Performance of the controller is investigated. A compromise arises in the design of the speed feedback gain between high and low frequency wind components rejection. Furthermore, a cut-off frequency of the wind velocity measurement is obtained that minimizes the effect of turbulence on power regulation. Simulation results are presented, corroborating the features of the control strategy.

URLhttp://dx.doi.org/10.1002/er.758
DOI10.1002/er.758
Líneas de investigación: 
Control of renewable energy systems
Control of wind turbines and their integration to the grid
Control de turbinas eólicas y su integración a la red