Effective resistance and reactance of a solid cylindrical conductor placed in a semi-closed slot

Swann, S.A.; Salmon, Julia

doi:10.1049/pi-c.1962.0079

Cited by 17 publications

(3 citation statements)

References 1 publication

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“…In our case, the slot opening as shown in Figure 13, creates a disturbance of the field lines in the conductor and thus a modification of the current density as shown in Figure 12. In this case, we can express the ratio K by the relation ( 25) defined by previous studies on the slot of the cage-rotor induction motor [42].…”

Section: Additional Losses In the Barmentioning

confidence: 99%

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Concept, Feasibility of Cylindrical Bar Winding for Low Voltage Permanent Magnet Synchronous Motor

et al. 2022

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In this paper, we present the use of a solid bar winding for a permanent magnet synchronous motor dedicated to the electric drive of a full electric boat. For the winding, we chose to use cylindrical bars for the electric vehicle motorizations of a power lower than 10 kW. The choice of a 60 VDC low-voltage power distribution requires resorting to a solid bar winding with one bar per slot (single turn). Hence, the solid conductors dissipate additional copper losses (higher AC resistance). An analysis of these additional copper losses was carried out to accurately assess the effective AC resistance of the winding and, hence, the efficiency of the electric motor. A prototype for a POD propulsion was designed, built and tested. The characteristics of its electric motor were presented. The feasibility this type of cylindrical bar winding has been proven. A study on the optimization of the slot has demonstrated the performance of this type of winding.

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Section: Additional Losses In the Barmentioning

confidence: 99%

“…The results obtained for a bar of diameter 3 mm and 4 mm are presented in Figure 14. In this case, we can express the ratio K by the relation ( 25) defined by previous studies on the slot of the cage-rotor induction motor [42].…”

Section: Additional Losses In the Barmentioning

confidence: 99%

Concept, Feasibility of Cylindrical Bar Winding for Low Voltage Permanent Magnet Synchronous Motor

et al. 2022

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“…Agarwal calculated the leakage reactance of induction motors by equivalent circuit, and saturation factors were considered with respect to different angles between the air-gap surface and the slope of the tooth overhang [1]. S.A. Swann analyzed the current distribution over the cross section of a solid cylindrical conductor in a slot with a narrow opening, and determined the complex impedance of the conductor [2]. T.S.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Slot Leakage Reactance of Submersible Motor with Closed Slots during Starting Transient Operation

Bao¹,

Di²,

Fang³

2016

Journal of Electrical Engineering and Technology

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-Generally, closed slots are adopted to reduce the water friction loss in both the stator and the rotor of water filling submersible motor due to the special environment of operation. One of the obvious differences between the traditional induction motors and water filling submersible motors is that the submersible motors only need relatively smaller starting torque. This paper aims to analyze the slot leakage reactance of water filling submersible motor during starting transient operation. An improved analytical method which considered the magnetic saturation of the slot bridge and the skin effect of rotor bars is proposed. The slot permeance factor which has a direct impact on the slot leakage reactance is calculated. Then finite element models with different stator slot types are constructed and search coils are introduced to measure the slot flux linkage. Moreover, the starting performances of the models with two typical stator slots are compared and the flux leakage characteristics are obtained. Finally, the results obtained by finite element method are very close to the results obtained by analytical method.

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Die Ersatzschaltungen der zweidimensionalen nichtstationären Stromverdrängung in einer Maschinennut

Sikora¹,

Lipiński²

1974

Archiv f. Elektrotechnik

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Effective resistance and reactance of a solid cylindrical conductor placed in a semi-closed slot

Cited by 17 publications

References 1 publication

Concept, Feasibility of Cylindrical Bar Winding for Low Voltage Permanent Magnet Synchronous Motor

Concept, Feasibility of Cylindrical Bar Winding for Low Voltage Permanent Magnet Synchronous Motor

Analysis of Slot Leakage Reactance of Submersible Motor with Closed Slots during Starting Transient Operation

Die Ersatzschaltungen der zweidimensionalen nichtstationären Stromverdrängung in einer Maschinennut

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