Stability analysis of pitch-regulated, variable speed wind turbines in closed loop operation using a linear eigenvalue approach

Riziotis, VA; Politis, ES; Voutsinas, SG; Chaviaropoulos, PK

dc.contributor.author	Riziotis, VA	en
dc.contributor.author	Politis, ES	en
dc.contributor.author	Voutsinas, SG	en
dc.contributor.author	Chaviaropoulos, PK	en
dc.date.accessioned	2014-03-01T02:44:58Z
dc.date.available	2014-03-01T02:44:58Z
dc.date.issued	2007	en
dc.identifier.issn	17426588	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/32053
dc.subject	Eigenvalues	en
dc.subject	Stability Analysis	en
dc.subject	Wind Turbine	en
dc.title	Stability analysis of pitch-regulated, variable speed wind turbines in closed loop operation using a linear eigenvalue approach	en
heal.type	conferenceItem	en
heal.identifier.primary	10.1088/1742-6596/75/1/012068	en
heal.identifier.secondary	http://dx.doi.org/10.1088/1742-6596/75/1/012068	en
heal.identifier.secondary	012068	en
heal.publicationDate	2007	en
heal.abstract	A multi-body aeroelastic design code based on the implementation of the combined aeroelastic beam element is extended to cover closed loop operation conditions of wind turbines. The equations of a controller for variable generator speed and pitch controlled operation in high wind speeds are combined with the aeroelastic equations of motion for the complete wind turbine, in order to provide a compound servo-aeroelastic system of equations. The control equations comprise linear differential equations for the pitch and generator torque actuators, the control feedback elements (PI control) and the various filters acting on the feedback signals. In its non-linear form the dynamic equations are integrated in time to provide the reference state, while upon linearization of the system and transformation in the non-rotating frame, the linear stability equations are derived. Stability results for a multi-MW wind turbine, show that the coupling of the controller dynamics with the aeroelastic dynamics of the machine is important and must be taken into account in view of defining the controller parameters. © 2007 IOP Publishing Ltd.	en
heal.journalName	Journal of Physics: Conference Series	en
dc.identifier.doi	10.1088/1742-6596/75/1/012068	en
dc.identifier.volume	75	en
dc.identifier.issue	1	en