GB1314901A - Synchronous alternating current motors - Google Patents
Synchronous alternating current motorsInfo
- Publication number
- GB1314901A GB1314901A GB1314901DA GB1314901A GB 1314901 A GB1314901 A GB 1314901A GB 1314901D A GB1314901D A GB 1314901DA GB 1314901 A GB1314901 A GB 1314901A
- Authority
- GB
- United Kingdom
- Prior art keywords
- magnets
- core
- rotor
- april
- segments
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2706—Inner rotors
- H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
- H02K1/274—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
- H02K1/2753—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets the rotor consisting of magnets or groups of magnets arranged with alternating polarity
- H02K1/276—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM]
- H02K1/2766—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM] having a flux concentration effect
- H02K1/2773—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM] having a flux concentration effect consisting of tangentially magnetized radial magnets
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Permanent Magnet Type Synchronous Machine (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
1314901 Core constructions BROOK MOTORS Ltd 24 April 1970 [26 April 1969] 19682/70 Heading H2A A synchronous A.C. motor includes a rotor core having permanent magnets 30, 32, 34, 36, arranged with their polar axes tangential to an imaginary circle drawn in a radial plane about a point on the rotor axis. The rotor core shown produces four poles at circumferential positions between adjacent ends of the magnets. The magnets are mounted in segments 10, 12, 14, 16, of magnetic material which are either separated by flux leakage gaps 18, 20, 22, 24, as shown or are joined by narrow bridging pieces. The segments may be cut away at 40 to reduce their circumferential peripheral extent. The core is slotted to carry a squirrel cage starting winding. By reversing magnets 30, 32, a two pole rotor may be formed.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1968270 | 1969-04-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1314901A true GB1314901A (en) | 1973-04-26 |
Family
ID=10133433
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1314901D Expired GB1314901A (en) | 1969-04-26 | 1969-04-26 | Synchronous alternating current motors |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1314901A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0144448A1 (en) * | 1983-06-10 | 1985-06-19 | Fanuc Ltd. | Method of manufacturing permanent magnetic field rotor |
| US4670696A (en) * | 1984-10-19 | 1987-06-02 | Kollmorgen Technologies Corporation | Variable speed variable reluctance electrical machines |
| GB2284104A (en) * | 1993-11-17 | 1995-05-24 | Ching Chuen Chan | Adjustable flux permanent magnet brushless AC or DC motor |
| US6919663B2 (en) | 2002-03-22 | 2005-07-19 | Ebm-Papst St. Georgen Gmbh & Co. Kg | Internal rotor motor |
| US7091643B2 (en) | 2003-03-12 | 2006-08-15 | Ebm-Papst St. Georgen Gmbh & Co. Kg | Polyphase electric motor |
-
1969
- 1969-04-26 GB GB1314901D patent/GB1314901A/en not_active Expired
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0144448A1 (en) * | 1983-06-10 | 1985-06-19 | Fanuc Ltd. | Method of manufacturing permanent magnetic field rotor |
| EP0144448A4 (en) * | 1983-06-10 | 1985-10-14 | Fanuc Ltd | Method of manufacturing permanent magnetic field rotor. |
| US4670696A (en) * | 1984-10-19 | 1987-06-02 | Kollmorgen Technologies Corporation | Variable speed variable reluctance electrical machines |
| GB2284104A (en) * | 1993-11-17 | 1995-05-24 | Ching Chuen Chan | Adjustable flux permanent magnet brushless AC or DC motor |
| GB2284104B (en) * | 1993-11-17 | 1998-04-15 | Ching Chuen Chan | Adjustable flux permanent magnet brushless DC motor |
| US6919663B2 (en) | 2002-03-22 | 2005-07-19 | Ebm-Papst St. Georgen Gmbh & Co. Kg | Internal rotor motor |
| US7091643B2 (en) | 2003-03-12 | 2006-08-15 | Ebm-Papst St. Georgen Gmbh & Co. Kg | Polyphase electric motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PLE | Entries relating assignments, transmissions, licences in the register of patents | ||
| PLNP | Patent lapsed through nonpayment of renewal fees |