Electric machine apparatus
US-2019199150-A1 · Jun 27, 2019 · US
Synchronous reluctance type rotary electric machine
US10637310B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10637310-B2 |
| Application number | US-201916373678-A |
| Country | US |
| Kind code | B2 |
| Filing date | Apr 3, 2019 |
| Priority date | Oct 7, 2016 |
| Publication date | Apr 28, 2020 |
| Grant date | Apr 28, 2020 |
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- Title
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Abstract
Official abstract text for this publication.
A synchronous reluctance type rotary electric machine of an embodiment has a rotor core. The rotor core includes a plurality of poles, multi-layered hollow parts having a convex shape toward a side radially inward formed for each pole in cross section, and a bridge formed between each of the hollow parts and an outer circumferential surface thereof. When a boundary between two adjacent poles is a pole boundary, a groove is formed on at least one of both sides sandwiching the pole boundary at positions other than on the pole boundary on the outer circumferential surface of the rotor core.
First claim
Opening claim text (preview).
What is claimed is: 1. A synchronous reluctance type rotary electric machine comprising: a rotor core including a plurality of poles, multi-layered hollow parts having a convex shape toward a side radially inward formed for each pole in cross section, and a bridge formed between each of the hollow parts and an outer circumferential surface thereof, wherein, when a boundary between two adjacent poles is a pole boundary, a groove is formed on at least one of both sides sandwiching the pole boundary at positions other than on the pole boundary on the outer circumferential surface of the rotor core, and when a center in a circumferential direction of one pole is a pole center, a second groove is formed on an outer circumferential surface of the bridge positioned next to the bridge closest to the pole center, and a groove depth of the second groove is set to gradually increase toward the pole center. 2. The synchronous reluctance type rotary electric machine according to claim 1 , wherein the groove is formed over the entire rotor core in a direction of a rotation axis. 3. The synchronous reluctance type rotary electric machine according to claim 1 , wherein the groove is formed within a range of the bridge at a position closest to the pole boundary. 4. The synchronous reluctance type rotary electric machine according to claim 1 , wherein a groove depth of the groove is set to gradually increase toward the pole boundary.
Assignees
Inventors
Classifications
- H02K1/276Primary
Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM] · CPC title
Motors having windings on the stator and a variable reluctance soft-iron rotor without windings · CPC title
Machines with a special form of the pole shoes · CPC title
with variable-reluctance soft-iron rotors without winding · CPC title
for multi-phase current · CPC title
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- What does patent US10637310B2 cover?
- A synchronous reluctance type rotary electric machine of an embodiment has a rotor core. The rotor core includes a plurality of poles, multi-layered hollow parts having a convex shape toward a side radially inward formed for each pole in cross section, and a bridge formed between each of the hollow parts and an outer circumferential surface thereof. When a boundary between two adjacent poles is…
- Who is the assignee on this patent?
- Toshiba Ind Products & Systems Corp, Toshiba Infrastructure Systems & Solutions Corp
- What technology area does this patent fall under?
- Primary CPC classification H02K1/276. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Apr 28 2020 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 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).