Permanent magnet rotor and electric motor incorporating the rotor
US-9225209-B2 · Dec 29, 2015 · US
Electric motor's sectional rotor with asymmetric poles having permanent magnets
US9831729B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9831729-B2 |
| Application number | US-201213675648-A |
| Country | US |
| Kind code | B2 |
| Filing date | Nov 13, 2012 |
| Priority date | Jan 16, 2012 |
| Publication date | Nov 28, 2017 |
| Grant date | Nov 28, 2017 |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
A rotor is and a motor including the rotor and a stator are provided. The rotor includes a rotor core and rotor poles. The rotor poles are arranged circumferentially around the rotor core, and each of the rotor poles is formed in an asymmetric shape. The stator is spaced apart from the rotor and includes slots which are configured so that a coil may be wound around the slots.
First claim
Opening claim text (preview).
What is claimed is: 1. A rotor comprising: a rotor core; and a plurality of rotor poles arranged circumferentially around the rotor core, wherein each of the plurality of rotor poles is formed in an asymmetric shape, and wherein each of the plurality of rotor poles comprises: a permanent magnet embedded in the rotor core, the permanent magnet oriented such that a longest dimension of the permanent magnet is a length which extends along a circumferential direction of the rotor core, wherein the length of the permanent magnet is greater than a thickness of the permanent magnet, wherein the thickness extends in a radial direction of the rotor core, and wherein the permanent magnet comprises a right portion having a first length and a first thickness along the radial direction of the rotor core, wherein the first thickness is consistent over the first length, and a left portion having a second length and a second thickness, different from the first thickness, along a the radial direction of the rotor core, wherein the second thickness is consistent over the second length, wherein a first side of the right portion facing the rotor core and a first side of the left portion facing the rotor core form a continuous straight line. 2. The rotor of claim 1 , wherein the rotor core comprises a plurality of flux barriers, wherein, for each permanent magnet, one flux barrier is in contact with a side of the right portion and another flux barrier is in contact with a side of the left portion. 3. The rotor of claim 1 , wherein the permanent magnet comprises the right portion and the left portion without any intermediary portions therebetween.
Assignees
Inventors
Classifications
Sectional machines · CPC title
- H02K1/274Primary
the rotor consisting of two or more circumferentially positioned magnets · CPC title
- H02K1/276Primary
Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM] · CPC title
Surface mounted magnets; Inset magnets · CPC title
- H02K1/26Primary
Rotor cores with slots for windings · CPC title
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Frequently asked questions
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- What does patent US9831729B2 cover?
- A rotor is and a motor including the rotor and a stator are provided. The rotor includes a rotor core and rotor poles. The rotor poles are arranged circumferentially around the rotor core, and each of the rotor poles is formed in an asymmetric shape. The stator is spaced apart from the rotor and includes slots which are configured so that a coil may be wound around the slots.
- Who is the assignee on this patent?
- Samsung Electronics Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification H02K1/274. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Nov 28 2017 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).