Characterising brushless doubly fed machine rotors

Autor: Ehsan Abdi, Paul Malliband, Richard A. McMahon, Peter Tavner, Darren Barker
Rok vydání: 2013
Předmět:
Zdroj: IET Electric Power Applications. 7:535-543
ISSN: 1751-8679
1751-8660
Popis: The brushless doubly fed machine (BDFM) is a robust alternative to the doubly fed induction generator, currently widely used in wind turbines but prone to brush-gear and slip-ring failure. The rotor winding plays an important part in a BDFM, coupling the two stator windings. To date, nested-loop (NL) rotor windings have been exclusively used in practical BDFM. This approach may not be ideal for larger machines, in which form-wound series-loop rotor winding may be preferable to large section bars and end-rings. This study gives a comparative analytical and experimental study of two different brushless doubly fed 160 frame-size rotors, with NL or series-wound windings, mounted in identical rotor core laminations operating in the same stator tested at a limited voltage (200 V line). The rotors gave a performance which accords with theoretical predictions from two independent methods, giving insight into the design issues of the different rotor windings from both an electrical and manufacturing viewpoint.
Databáze: OpenAIRE
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