Sinusoidal reluctance machine with DC winding: An attractive non-permanent magnet option

Raminosoa, Tsarafidy; Torrey, D.A.; El-Refaie, Ayman; Grace, Kevin; Pan, Di; Grubic, Stefan; Bodla, Karthik K.; Huh, Kang Y.

doi:10.1109/ecce.2015.7310342

Cited by 11 publications

(21 citation statements)

References 16 publications

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“…The latter one is due to the interaction between AC currents and the mutualinductance between the AC windings and the DC winding [8], [9]. The on-load DC winding induced voltage vload can be expressed as, (14) where varma is the DC winding induced voltage caused by armature reaction.…”

Section: On-load DC Winding Induced Voltagementioning

confidence: 99%

“…Therefore, based on (14), vload can be obtained by adding vopen in (6) and varma in (15). As shown in (15), armature reaction generates 3m th (m=1,2,3…) arma harmonics and hence induced voltage harmonics in the DC winding.…”

Section: On-load DC Winding Induced Voltagementioning

confidence: 99%

“…However, wound field synchronous machines (WFSMs) may potentially replace the PM machines to reduce the rare earth PM cost and improve the limited flux-weakening performance in PM machines [3]. The conventional wound-rotor machines having DC winding in the rotor but AC windings in the stator suffer from brushes and slip rings [4], which can be eliminated in the wound-stator machines [5]- [14]. In wound-stator machines, both the DC winding and AC windings are placed in the stator, whilst the salient rotor is simple without any DC coil or AC coil, similar to that of the switched reluctance machines [15], [16].…”

Section: Introductionmentioning

confidence: 99%

“…Wound field switched flux machine [6]- [14] is a typical type of wound-stator machine. When the salient pole rotor is rotating together with the stator DC field excitation, bipolar flux-linkage and hence back-EMF can be generated in the AC coils and hence AC windings.…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, the electromagnetic torque can be produced by injecting bipolar currents into AC windings [6]. Wound field switched flux machines for automotive propulsion and traction applications are analyzed in [11]- [14]. The experimental results show that the wound field switched flux machines can produce similar torque and power density as the PM machines but cost less.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Influence of DC Winding Configuration on Its Induced Voltage in Wound Field Machines

Wang

Mipo

et al. 2018

IEEE Trans. Energy Convers.

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Section: On-load DC Winding Induced Voltagementioning

confidence: 99%

Section: On-load DC Winding Induced Voltagementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Influence of DC Winding Configuration on Its Induced Voltage in Wound Field Machines

Wang

Mipo

et al. 2018

IEEE Trans. Energy Convers.

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Comparison of traction motors that reduce or eliminate rare‐earth materials

El-Refaie

Raminosoa

Reddy

et al. 2017

IET Electrical Systems in Transportation

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Important global efforts are underway toward lowering the cost of electric machines for electric and hybrid vehicles by reducing or eliminating the use of rare earth materials which have been experiencing significant price increases and volatility. This study will present several designs that reduce or eliminate rare-earth materials. All these designs are targeting the same set of specifications of 55 kW peak at 2800 rpm and 30 kW continuous over a speed range going from 2800-14,000 rpm. This provides a fair basis of comparison of various machine topologies. The study will provide a quantitative comparison of the performance of various machine topologies as well as highlight the key tradeoffs.

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Analysis and Reduction of DC Winding Induced Voltage Pulsation in Five-Phase Non-Overlapped Stator Wound Field Flux Switching Machine

et al. 2021

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DC winding induced voltage pulsation in Wound field flux switching (WFFS) machine is the main cause of the current ripples in DC winding. It may also deteriorates the DC power source and enhances the challenging issues to the control performances of the machine. Hence, reduction of this pulsation is very considerable parameter to analyze in WFFS machine's analysis. In this paper, DC winding induced voltage for five phase non overlapping stator WFFS machine is analyzed and reduced through various techniques. Three techniques i.e. rotor pole arc optimization, chamfering and rotor step skewing are analyzed and optimized to reduce the DC winding induced voltage. For optimization, krigging method based on genetic algorithm (GA) is performed due to compatibility with non-linear data and then results are verified by finite element (FE) analysis. By applying the chamfering and rotor pole arc optimization, 49.58% and 28.45% reduction in the peak to peak value of DC winding induced voltage pulsation is achieved and electromagnetic torque is maintained at 97.82% and 100% respectively while by applying the rotor skewing, 33.29% reduction in DC winding induced voltage pulsation is achieved and the torque is maintained at 98.37% for the five phase 10S-11P WFFS machine.INDEX TERMS Five-phase, WFFS machines, dc induced voltage, non-overlapped stator, optimization, reduction techniques for dc induced voltage.

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Sinusoidal reluctance machine with DC winding: An attractive non-permanent magnet option

Cited by 11 publications

References 16 publications

Influence of DC Winding Configuration on Its Induced Voltage in Wound Field Machines

Influence of DC Winding Configuration on Its Induced Voltage in Wound Field Machines

Comparison of traction motors that reduce or eliminate rare‐earth materials

Analysis and Reduction of DC Winding Induced Voltage Pulsation in Five-Phase Non-Overlapped Stator Wound Field Flux Switching Machine

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