Design aspects of circumferentially cooled frameless machines

Festa, Marco; Eberhardt, H.-D.; Hofmann, W.

doi:10.1109/icems.2009.5382743

Cited by 4 publications

(1 citation statement)

References 3 publications

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“…Core cross-section can be further increased if the lamination is designed mechanically stable without the need of a frame. A frameless, circumferentially cooled machine is developed [4]. A design, which requires two sheet punches with different outside diameters, is practically inacceptable due to higher production costs.…”

Section: Circumferential Coolingmentioning

confidence: 99%

Extremely efficient but compact — A circumferentially cooled induction motor

Festa

Zhang

Eberhardt

et al. 2011

2011 International Conference on Electrical Machines and Systems

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This paper demonstrates the impact of advanced, multiphysical material utilization on the efficiency of induction motors. Multifunctional utilization of the stator lamination in terms of integration of thermal and fluid-mechanical functions leads to significantly increased space for active material. Circumferential cooling combines multiphysical utilization of the stator lamination and significantly increased cooling surface. The paper shows that circumferentially cooled motors can reach the future premium efficiency class IE4 with the frame size of a standard TEFC motor.Index Terms -standard induction motors, premium efficiency, direct lamination cooling, circumferential cooling, advanced material utilization, thermal model.

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Section: Circumferential Coolingmentioning

confidence: 99%

Extremely efficient but compact — A circumferentially cooled induction motor

Festa

Zhang

Eberhardt

et al. 2011

2011 International Conference on Electrical Machines and Systems

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Inter-laminar flux and eddy current losses in a circumferentially cooled stator core

Festa

Eberhardt

Hofmann

2010

The XIX International Conference on Electrical Machines - ICEM 2010

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1 -The circumferential cooling system, which provides highly effective, integrated but low-cost motor cooling, is introduced. This work is focussed particularly on magnetic effects, which arise from the special construction of the stator core. An explanation for the existence of inter-laminar flux is given and equations for the prediction of its absolute value are derived. Two approaches, an analytical and a numerical one, for the estimation of power losses due to inter-laminar flux are introduced. In agreement with the calculation results, measurements prove that power losses due to axial flux are very small and are not a concern for the design of a circumferentially cooled machine.

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Review of Research Status of Efficient Gas Cooling Technology for Motors

Yang,

Liu,

Zhou

et al. 2024

2024 IEEE 10th International Power Electronics and Motion Control Conference (IPEMC2024-ECCE Asia)

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Design aspects of circumferentially cooled frameless machines

Cited by 4 publications

References 3 publications

Extremely efficient but compact — A circumferentially cooled induction motor

Extremely efficient but compact — A circumferentially cooled induction motor

Inter-laminar flux and eddy current losses in a circumferentially cooled stator core

Review of Research Status of Efficient Gas Cooling Technology for Motors

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Design aspects of circumferentially cooled frameless machines

Cited by 4 publications

References 3 publications

Extremely efficient but compact &#x2014; A circumferentially cooled induction motor

Extremely efficient but compact &#x2014; A circumferentially cooled induction motor

Inter-laminar flux and eddy current losses in a circumferentially cooled stator core

Review of Research Status of Efficient Gas Cooling Technology for Motors

Contact Info

Product

Resources

About

Extremely efficient but compact — A circumferentially cooled induction motor

Extremely efficient but compact — A circumferentially cooled induction motor