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Efficiency Analysis of Fractional KiloWatt Reluctance Motors with Various Frame Sizes, Taking into Account the Impact of the Punching Process

Institute of Mechatronic and Information Systems, Lodz University of Technology, 90-924 Lodz, Poland
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Energies 2020, 13(2), 357; https://doi.org/10.3390/en13020357
Received: 14 November 2019 / Revised: 8 January 2020 / Accepted: 9 January 2020 / Published: 10 January 2020
(This article belongs to the Section Electrical Power and Energy System)
The need to reduce electricity consumption by electrical devices, including electric motors, is the reason for the development of new designs. Designers strive to improve operational parameters, including efficiency, using, for example, new types of magnetic materials, new types of stator windings, etc. Currently, in mass production, motor cores are made of punched laminations—punching causes damage of core parts. For motors of relatively large geometrical sizes, this effect is ignored during design. For motors having small dimensions, this negative effect results in a reduction in efficiency, which is mostly small for this type of motor. In this paper, the authors propose a new rapid algorithm based on simple measurements to determine the material characteristics of the damaged material part. Then, using them in the FEM models, they determine the efficiency of motors with various powers and frame sizes. On this basis, the conclusions are formulated, they may be helpful for motor designers.
Keywords: efficiency; numerical models; synchronous reluctance motor; magnetic materials; punching process efficiency; numerical models; synchronous reluctance motor; magnetic materials; punching process
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MDPI and ACS Style

Gmyrek, Z.; Smółka, K. Efficiency Analysis of Fractional KiloWatt Reluctance Motors with Various Frame Sizes, Taking into Account the Impact of the Punching Process. Energies 2020, 13, 357.

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