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| PM Assisted, Brushless Wound Rotor Synchronous Machine |
| Journal of Magnetics, Volume 21, Number 3, 30 Sep 2016, Pages 399-404 |
Qasim Ali (Hanyang University), Shahid Atiq (The Islamia University of Bahawalpur), Thomas A. Lipo (Florida State University), Byung-il Kwon *  (Hanyang University) |
| Abstract |
This paper presents a new permanent magnet (PM) assisted topology for a recently introduced brushless
wound rotor synchronous machine (BL-WRSM) [1]. The BL-WRSM had a dual-inverter configuration for
generating a composite magneto motive force (MMF) with a fundamental component and a subharmonic
component. The subharmonic component of the MMF is used for brushless excitation of the rotor. In this
paper, additional PMs were introduced on the rotor of the BL-WRSM, making it a hybrid BL-WRSM. We also discussed the flux weakening operation for the hybrid BL-WRSM. The hybrid BL-WRSM offered advantages for starting the machine and provided better performance under full-load conditions. The finite element method (FEM) was used to analyze the performance of the hybrid BL-WRSM, and we compared its performance with BL-WRSM. Finally, prototypes were built with and without the PM-assistance, and
experiments were conducted to demonstrate their performance.
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| Keywords: brushless excitation; synchronous machine; hybrid excitation; flux weakening |
| DOI: http://dx.doi.org/10.4283/JMAG.2016.21.3.399 |
| Full Text: PDF |
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