Design and optimization of self-excited synchronous machines with fractional slots

Marignetti, Fabrizio; D’Aguanno, D.

doi:10.1109/ever.2015.7112965

Cited by 4 publications

(4 citation statements)

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“…The expression of the νth harmonic of the flux-density B R in the rotor β reference is derived as in [24]. The flux density can be found introducing the vacuum permeability µ 0 and the air gap length δ:…”

Section: Mathematical Model and Space Harmonics Analysismentioning

confidence: 99%

“…where V ab is the voltage at the rectifier terminals. In [24], a criterion for the cancellation of the mutual voltages is provided, based on the displacement of the two rotor windings: e 14r,10r (t) = e 10r,14r (t) = 0.…”

Section: Mathematical Model and Space Harmonics Analysismentioning

confidence: 99%

“…One rotor winding occupies 20 slots and the other one 28. The machine construction has been described in detail in [24], where the fractional slot concentrated winding technique is presented.…”

Section: Construction Of Sesmmentioning

confidence: 99%

“…This paper discusses the main aspects of the design of a three-phase self-excited synchronous machine, provided with a fractional slot concentrated winding using a different combination of slots and poles compared to Dajaku's machine; in the proposed solution, the MMF space harmonics that are produced by the stator windings are exploited to generate the excitation air-gap field, as in [24].…”

Section: Introductionmentioning

confidence: 99%

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Development and Laboratory Testing of a Self-Excited Synchronous Machines without Permanent Magnets

et al. 2020

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Today, self-excited synchronous machines are the object of increasing interest because they use neither brushes nor permanent magnets. In fact, the price of rare earth metals is considerably high and still raising. This is the main reason why researchers are looking for suitable alternatives to permanent magnets in the construction of rotating electrical machinery. This paper deals with the design and laboratory testing of a synchronous machine with an efficient layout and an economic construction. The proposed self-excited machine exploits the space harmonics of the magneto-motive force to produce the excitation field. The model analysis is based on the computation of the back EMFs that are associated to the magneto motive force components. The mathematical model suggests an easy way to decouple the rotor windings. The machine has been built and experimental tests have been performed in order to validate the electrical behavior.

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Section: Mathematical Model and Space Harmonics Analysismentioning

confidence: 99%

Section: Mathematical Model and Space Harmonics Analysismentioning

confidence: 99%

Section: Construction Of Sesmmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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