TECHICAL Series MATHEMATICS • INFORMATICS • PHYSICS Series PHILOLOGY Series ECONOMIC SCIENCES Sereies EDUCATIONAL SCIENCES Series LAW AND SOCIAL SCIENCES Series
Estimation of the Wind Generator Systems Efficiency
(Estimarea eficienţei sistemelor de generatoare eoliene)
Vol LVIII • No. 2bis/2006
Lucian Miheţ-Popa
"Politehnica? University of Timisoara
e-mail: mihetz@yahoo.com

 Keywords   Wind generator systems, Weibull and Rayleigh distribution, OptiSpeed and OptiSlip Wind Turbine concepts.

 Abstract
In this paper, the performance of variable speed and constant speed wind turbine concepts regarding efficiency of generated power are investigated. A method to calculate annual energy loss distribution of a wind generator system is presented. The losses of different components of two variable-speed wind generator topologies of 3 MW using Doubly-Fed Induction Generators are evaluated with regards to their energy production.

 Rezumat
In acest articol sunt studiate performanţele a două topologii de turbine eoliene, atât cu viteza constantă cât şi cu viteză variabilă, în funcţie de puterea activă generată. De asemenea, este prezentată o metodă de determinare a pierderilor de energie a generatoarelor eoliene. Pentru a evidenţia diferenţa dintre pierderile elementelor componente ale unei turbine de vânt utilizând maşina de inducţie cu rotorul bobinat, s-a realizat o comparaţie între două generatoare eoliene de 3 MW, unul cu viteza variabilă şi convertor de frecvenţă bidirecţional (OptiSpeed) iar celălalt cu viteză limitat variabilă şi reostat suplimentar în rotor , controlat printr-un chopper (OptiSlip).



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Vol LVIII • No. 2bis/2006
Vol LVIII • No. 2/2006
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