Patent
Stator for a synchronous machine
Holger Schunk,Rolf Vollmer +1 more
- 12 Aug 2003
46
TL;DR: In this article, a harmonic motor with an increased slot surface and copper fill factor is described, where a pole tooth with a removable head is arranged between each two pool teeth with a fixed tooth head.
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Abstract: A harmonic motor with an increased slot surface and copper fill factor is described. A laminated stator core for an electric machine, in particular for a synchronous machine, has a substantially cylindrical bore and a plurality of pole teeth extending radially inwardly in the bore. Each of the pole teeth have an inner free end, with a fixed tooth head affixed to the inner end of each second pole tooth, as viewed in the circumferential direction. A pole tooth with a removable head is arranged between each two pool teeth with a fixed tooth head. For easy installation, windings can only be wound around those pole teeth that have a removable tooth head.
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Citations
Patent
Electric motor having a stator
Dan M. Ionel,Stephen J. Dellinger,Alan E. Lesak +2 more
- 09 Aug 2005
TL;DR: A stator configured to rotate a rotor with a number of magnetic poles includes a yoke that includes a back portion and a first type and first quantity of integral teeth, and a second type and second quantity of insertable teeth coupled to the back portion.
68
Patent
Electroactive polymer transducers biased for increased output
Jonathan R. Heim,Ilya Polyakov,Alizreza Zarrabi,Otto Hui +3 more
- 29 Dec 2006
TL;DR: In this article, the authors proposed an approach to improve the performance of polymeric transducers by using negative spring rate biasing and/or a combination of negative or zero-rate biasing with positive rate bias.
43
Patent
Axial-gap dynamo-electric machine
Yuusuke Minagawa,Noriyuki Ozaki +1 more
- 29 Jul 2005
TL;DR: A stator for use in an axial-gap dynamo-electric machine was proposed in this article, where a plurality of stator core elements were arranged to form teeth on a rotor side of a stator and back on a base side of the stator.
38
On-Load Voltage Distortion in Fractional Slot Surface-Mounted Permanent Magnet Machines Considering Local Magnetic Saturation
Di Wu,Zi-Qiang Zhu +1 more
TL;DR: In this paper, the effect of on-load voltage distortion in fractional slot surface-mounted permanent magnet machines was investigated with the aid of frozen permeability method, and the mechanism of this phenomenon was investigated based on a 12-slot/8-pole model as an example.
25
Patent
Combination drive with a hybrid reluctance motor
Erich Bott,Matthias Braun,Detlef Potoradi,Holger Schunk,Rolf Vollmer +4 more
- 21 Apr 2006
TL;DR: In this paper, a hybrid reluctance motor was used to combine a linear-rotary drive and a rotary driving device to create a compact, simple, and inexpensive design for a single rotor.
25
References
Patent
Permanent magnet brushless DC motor having reduced cogging
Daniel Gizaw
- 20 Nov 1991
TL;DR: In this article, an improved salient pole configuration for a dynamoelectric machine is disclosed, particularly for a permanent magnet brushless DC motor wherein cogging torque is a problem, where one or more apertures or "reluctance holes" are disposed within the head portion of the salient poles in the stator such that the reluctance holes are substantially adjacent but not adjoining the pole face.
82
Patent
Direct-current motor
Yasumasa Nagasaki,Hideo Hotta,Kazuo Kitamura +2 more
- 24 Apr 1997
TL;DR: In this paper, a direct-current motor is defined as a core including a plurality of teeth arranged in a circular disposition, the teeth having distal ends and coil-winding sections respectively, coils wound on the coils of the coils respectively, and pole sections each of which is provided at a distal end side of the corresponding tooth and is circumferentially wider than the corresponding coilwinding section.
59
Patent
Electrical machine with a single pole winding
Wolfgang Hill
- 15 Oct 1997
TL;DR: In this paper, the body of the electric machine which forms the individual poles is made of soft magnetic segments and the segments are preferably made of axially stacked metal sheets having indentations on the edges forming the wall of the slot.
38
Patent
Stator for synchronous motors having more than two poles
Marioni Elio
- 02 Jun 2000
TL;DR: A stator for synchronous motors with more than two poles is a closed annular structure, with at least one pole shoe protruding from each one of the sectors as mentioned in this paper.
22
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