Study on electrically excitation system of a novel brushless synchronous machine

Zhang, Fengge; Zhao, Yunwu; Jia, Guanglong; Lin, Mi

doi:10.1109/icems.2014.7013955

Cited by 8 publications

(2 citation statements)

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“…The WRSM requires brushes and slip rings, which need maintenance and can experience losses and sparking. Different brushless techniques were discussed in [8][9][10][11] with a goal of overcoming the problems related to brushes and slip rings. In [8], additional windings were placed on the stator to achieve brushless operation, but this increased the overall area of the stator.…”

Section: Introductionmentioning

confidence: 99%

“…Different brushless techniques were discussed in [8][9][10][11] with a goal of overcoming the problems related to brushes and slip rings. In [8], additional windings were placed on the stator to achieve brushless operation, but this increased the overall area of the stator. Higher harmonics of the stator MMF were used for rotor excitation in [9] and [10], and this method resulted in brushless operation at the cost of increased losses due to the higher harmonic generation.…”

Section: Introductionmentioning

confidence: 99%

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PM Assisted, Brushless Wound Rotor Synchronous Machine

Ali¹,

Atiq²,

Lipo³

et al. 2016

Journal of Magnetics

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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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