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Sensors 2014, 14(7), 12425-12436; doi:10.3390/s140712425
Article

Synchronous Motor with Hybrid Permanent Magnets on the Rotor

1,* , 1
,
2
,
2
 and
2
1 Tele and Radio Research Institute, 11 Ratuszowa St., 03-450 Warsaw, Poland 2 Wroclaw University of Technology, 27 Wybrzeze Wyspianskiego St., 50-370 Wroclaw, Poland
* Author to whom correspondence should be addressed.
Received: 29 April 2014 / Revised: 18 June 2014 / Accepted: 24 June 2014 / Published: 10 July 2014

Abstract

Powder metallurgy allows designers of electric motors to implement new magnetic circuit structures. A relatively new concept is the use of a magnet system consisting of various types of magnets on one rotor, for example sintered and bonded magnets. This concept has been applied to the design and manufacture of the four-pole rotor of a synchronous motor with 400 W power and a rotational speed of 1500 rpm. In this motor, the stator of an asynchronous motor type Sh 71-4B is applied. The application of the new construction of the rotor resulted in an increase in motor efficiency and power factor compared to an asynchronous motor with the same volume.
Keywords: magnet system; soft magnetic materials; electric motors magnet system; soft magnetic materials; electric motors
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).
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Slusarek, B.; Kapelski, D.; Antal, L.; Zalas, P.; Gwoździewicz, M. Synchronous Motor with Hybrid Permanent Magnets on the Rotor. Sensors 2014, 14, 12425-12436.

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