Rotor parameter determination for the brushless doubly fed (induction) machine

Richard McMahon; Paul Roberts; Mark Tatlow; Ehsan Abdi; Alex Broekhof; Salman Abdi

Rotor parameter determination for the brushless doubly fed (induction) machine

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Author(s): Richard McMahon ¹ ; Paul Roberts ² ; Mark Tatlow ¹ ; Ehsan Abdi ³ ; Alex Broekhof ¹ ; Salman Abdi ¹
- Affiliations: 1: Electrical Engineering Division, University of Cambridge, 9 JJ Thomson Avenue, Cambridge CB3 0FA, UK ;
  2: Cambridge Medical Robotics Ltd., Crome Lea Business Park, Madingley Road, Cambridge CB23 7PH, UK ;
  3: Wind Technologies Ltd., Cambridge Science Park, Cambridge CB4 0EY, UK
Source: Volume 9, Issue 8, September 2015, p. 549 – 555
DOI: 10.1049/iet-epa.2015.0023 , Print ISSN 1751-8660, Online ISSN 1751-8679

Received 15/07/2014, Accepted 26/05/2015, Revised 07/04/2015, Published 01/09/2015

A procedure has been established for obtaining equivalent circuit parameters for the brushless doubly fed machine, also known as the brushless doubly fed induction machine, by transforming a reduced coupled-circuit model into a sequence component form. This approach takes advantage of the model reduction procedure's ability to reduce a complex rotor structure to a single equivalent loop without significant loss of accuracy. An alternative method based on winding factors has also been developed and includes coupling via harmonic fields. Parameters determined in both ways are in close agreement with those determined from finite element analysis and experimentally. The advantages of each method are discussed in the conclusion section.

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Rotor parameter determination for the brushless doubly fed (induction) machine

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