SE8301002L - Permanent magnet motors and generators with maximized energy density and efficiency - Google Patents
Permanent magnet motors and generators with maximized energy density and efficiencyInfo
- Publication number
- SE8301002L SE8301002L SE8301002A SE8301002A SE8301002L SE 8301002 L SE8301002 L SE 8301002L SE 8301002 A SE8301002 A SE 8301002A SE 8301002 A SE8301002 A SE 8301002A SE 8301002 L SE8301002 L SE 8301002L
- Authority
- SE
- Sweden
- Prior art keywords
- length
- permanent magnet
- energy density
- total
- gap
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
- H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
- H02K21/14—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/02—Details of the magnetic circuit characterised by the magnetic material
-
- 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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K23/00—DC commutator motors or generators having mechanical commutator; Universal AC/DC commutator motors
- H02K23/02—DC commutator motors or generators having mechanical commutator; Universal AC/DC commutator motors characterised by arrangement for exciting
- H02K23/04—DC commutator motors or generators having mechanical commutator; Universal AC/DC commutator motors characterised by arrangement for exciting having permanent magnet excitation
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
- Permanent Magnet Type Synchronous Machine (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
An electrical permanent magnet motor has a permanent magnet four-pole rotor 110 surrounded by a generally circular stator 122. Air gaps 130, 132 of length Lg are arranged to be substantially longer than in comparable prior art. The flux path through one of four basic radially magnetic circuits of the motor is shown at line 28, and this circuit includes the total magnet length 2Lm as well as the total gap length 2Lg. An enlarged winding 124 substantially fills the gap Lg. The ratio of the total gap length 2Lg to the total magnet length 2Lm is specially selected to strike an optimum balance between the energy density of the rotor 110 and the energy density within the gap Lg without causing irreversible de-magnetization of the rotor 110 and yet yielding a high energy product. <IMAGE>
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB8304655A GB2135832B (en) | 1983-02-19 | 1983-02-19 | Magnet motors and generators |
Publications (3)
Publication Number | Publication Date |
---|---|
SE8301002D0 SE8301002D0 (en) | 1983-02-23 |
SE8301002L true SE8301002L (en) | 1984-08-24 |
SE441796B SE441796B (en) | 1985-11-04 |
Family
ID=10538278
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SE8301002A SE441796B (en) | 1983-02-19 | 1983-02-23 | ELECTRICAL MACHINE |
Country Status (8)
Country | Link |
---|---|
JP (1) | JPS59159655A (en) |
AU (1) | AU577514B2 (en) |
CA (1) | CA1186361A (en) |
DE (1) | DE3306758A1 (en) |
FR (1) | FR2541833B1 (en) |
GB (1) | GB2135832B (en) |
NL (1) | NL8300681A (en) |
SE (1) | SE441796B (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AU577514B2 (en) * | 1983-02-19 | 1988-09-29 | Servo Motor Technology Corporation. | Permanent magnet electric machines |
FR2580874B3 (en) * | 1985-04-23 | 1987-10-09 | Renault | ELECTRODYNAMIC SYNCH MACHINE |
CN103452883B (en) * | 2012-05-31 | 2016-03-30 | 中山大洋电机股份有限公司 | A kind of controlling method of variable speed wind turbine system |
WO2021211082A1 (en) * | 2020-04-13 | 2021-10-21 | Tartar Ali Samil | A magnetic field routing and electric generation system |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB604613A (en) * | 1940-08-10 | 1948-07-07 | Philips Nv | Improvements in or relating to magnetic-electric systems |
GB972364A (en) * | 1963-08-20 | 1964-10-14 | Mullard Ltd | Improvements in or relating to dynamo-electric machines |
FR1404480A (en) * | 1964-04-14 | 1965-07-02 | Lip Sa | Miniature synchronous motor |
FR1574848A (en) * | 1968-05-10 | 1969-07-18 | ||
FR2049422A6 (en) * | 1969-06-10 | 1971-03-26 | Valroger Pierre De | |
US3731533A (en) * | 1969-10-16 | 1973-05-08 | Dresser Ind | Electrical generator having non-salient poles for metering shaft rotation of a turbine assembly |
GB1349746A (en) * | 1970-06-13 | 1974-04-10 | Emi Ltd | Dynamo electric machines |
CA1103298A (en) * | 1977-02-25 | 1981-06-16 | Masami Uchiyama | Electric motor with discrete rotor position and speed sensors |
GB1604121A (en) * | 1977-04-08 | 1981-12-02 | Sony Corp | Dc motors |
AU577514B2 (en) * | 1983-02-19 | 1988-09-29 | Servo Motor Technology Corporation. | Permanent magnet electric machines |
-
1983
- 1983-02-16 AU AU11453/83A patent/AU577514B2/en not_active Ceased
- 1983-02-19 GB GB8304655A patent/GB2135832B/en not_active Expired
- 1983-02-22 CA CA000422140A patent/CA1186361A/en not_active Expired
- 1983-02-23 NL NL8300681A patent/NL8300681A/en not_active Application Discontinuation
- 1983-02-23 SE SE8301002A patent/SE441796B/en not_active IP Right Cessation
- 1983-02-24 FR FR8303025A patent/FR2541833B1/en not_active Expired
- 1983-02-25 DE DE19833306758 patent/DE3306758A1/en not_active Ceased
- 1983-02-28 JP JP3267383A patent/JPS59159655A/en active Pending
Also Published As
Publication number | Publication date |
---|---|
SE441796B (en) | 1985-11-04 |
AU1145383A (en) | 1984-08-23 |
CA1186361A (en) | 1985-04-30 |
GB2135832A (en) | 1984-09-05 |
AU577514B2 (en) | 1988-09-29 |
SE8301002D0 (en) | 1983-02-23 |
DE3306758A1 (en) | 1984-08-30 |
JPS59159655A (en) | 1984-09-10 |
FR2541833A1 (en) | 1984-08-31 |
GB8304655D0 (en) | 1983-03-23 |
GB2135832B (en) | 1986-10-08 |
FR2541833B1 (en) | 1989-06-09 |
NL8300681A (en) | 1984-09-17 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
NUG | Patent has lapsed |
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