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Wound rotor brushless doubly-fed motor
US8928199B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8928199-B2 |
| Application number | US-201113178542-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jul 8, 2011 |
| Priority date | Mar 27, 2009 |
| Publication date | Jan 6, 2015 |
| Grant date | Jan 6, 2015 |
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Abstract
Official abstract text for this publication.
A wound rotor brushless doubly-fed motor includes a stator and a rotor. The stator includes two sets of three-phase windings and the number of pole pairs is p 1 and p 2 respectively. The rotor includes a multi-phase wound winding and phase number m is satisfied with the relation m=(p 1 +p 2 )/m k , in which, when p 1 +p 2 is odd, m k =1; when p 1 +p 2 is even, m k =2. Rotor slots are evenly distributed along the circumference of the air gap and the number of the rotor slots Z′ is satisfied with the relation Z′=n(p 1 +p 2 ), in which n is a positive integer. Rotor winding coils are multi-turn structure, coil number of each phase winding is nm k and each coil has the same span, but turn ratios among the coils are different. When the phase winding coils number ≦nm k , all coils within the phase winding are automatically connected in short after being connected in series. The advantage of this invention is that the winding coil span can be changed flexibly and number of turns of each coil may be different so as to weaken high-order harmonics to the maximum extent.
First claim
Opening claim text (preview).
The invention claimed is: 1. A wound rotor brushless doubly-fed motor for connecting to a power grid power supply and a variable-frequency power supply, the wound rotor brushless doubly-fed motor comprising: an air gap having a circumference; a stator comprising a first set of three-phase windings and a second set of three-phase windings, each winding having pole pairs, wherein there are p 1 in number of pole pairs in the first set of the three-phase windings and there are p 2…
Assignees
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Classifications
- H02K3/28Primary
Electricity · mapped topic
- H02K17/165Primary
Electricity · mapped topic
Electricity · mapped topic
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- What does patent US8928199B2 cover?
- A wound rotor brushless doubly-fed motor includes a stator and a rotor. The stator includes two sets of three-phase windings and the number of pole pairs is p 1 and p 2 respectively. The rotor includes a multi-phase wound winding and phase number m is satisfied with the relation m=(p 1 +p 2 )/m k , in which, when p 1 +p 2 is odd, m k =1; when p 1 +p 2 is even, m k =2. Rotor slots are evenly…
- Who is the assignee on this patent?
- Wang Xuefan, Shu Dixian, Univ Huazhong Science Tech, and 1 more
- What technology area does this patent fall under?
- Primary CPC classification H02K3/28. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Jan 06 2015 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).