GB2205452B - Electrical machine - Google Patents
Electrical machineInfo
- Publication number
- GB2205452B GB2205452B GB8817246A GB8817246A GB2205452B GB 2205452 B GB2205452 B GB 2205452B GB 8817246 A GB8817246 A GB 8817246A GB 8817246 A GB8817246 A GB 8817246A GB 2205452 B GB2205452 B GB 2205452B
- Authority
- GB
- United Kingdom
- Prior art keywords
- windings
- stator
- generate
- magnetic field
- gap
- 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 - Lifetime
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K41/00—Propulsion systems in which a rigid body is moved along a path due to dynamo-electric interaction between the body and a magnetic field travelling along the path
- H02K41/06—Rolling motors, i.e. motors having the rotor axis parallel to the stator axis and following a circular path as the rotor rolls around the inside or outside of the stator ; Nutating motors, i.e. having the rotor axis parallel to the stator axis inclined with respect to the stator axis and performing a nutational movement as the rotor rolls on the stator
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/06—Means for converting reciprocating motion into rotary motion or vice versa
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K99/00—Subject matter not provided for in other groups of this subclass
- H02K99/20—Motors
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Electromagnetism (AREA)
- Windings For Motors And Generators (AREA)
- Synchronous Machinery (AREA)
Abstract
An electrical machine comprising a member (3) of magnetic material, and a stator (1) supporting windings which when energised generate magnetic fields in a gap defined between the member (3) and the stator (1). The stator (1) supports at least two windings each of which is energisable to generate a different number of magnetic pole pairs from the other winding or windings. At least one winding comprises a plurality of subwindings arranged to be energised by respective phases of a polyphase current so as to generate a moving magnetic field in the gap. A resultant magnetic field appears in the gap which is a moving magnetic field that is the sum of the magnetic fields resulting from energisation of each of the windings. The resultant distribution of attractive force between the two members (1, 3) may have a long wavelength compared to the winding pole pitches, which is of value in harmonic drive type devices, or may rotate at twice the angular frequency of a supply current, which enables high speed operation.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB8601429A GB8601429D0 (en) | 1986-01-21 | 1986-01-21 | Electrical machine |
GB8608228A GB8608228D0 (en) | 1986-04-04 | 1986-04-04 | Rotary to linear motion converter |
PCT/GB1987/000034 WO1987004574A1 (en) | 1986-01-21 | 1987-01-20 | Electrical machine |
Publications (3)
Publication Number | Publication Date |
---|---|
GB8817246D0 GB8817246D0 (en) | 1988-08-24 |
GB2205452A GB2205452A (en) | 1988-12-07 |
GB2205452B true GB2205452B (en) | 1990-06-06 |
Family
ID=26290253
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB8817246A Expired - Lifetime GB2205452B (en) | 1986-01-21 | 1987-01-20 | Electrical machine |
Country Status (3)
Country | Link |
---|---|
AU (1) | AU6896087A (en) |
GB (1) | GB2205452B (en) |
WO (1) | WO1987004574A1 (en) |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2857536A (en) * | 1955-07-18 | 1958-10-21 | Edward C Light | Variable reluctance machine |
US3200668A (en) * | 1964-05-22 | 1965-08-17 | Charles F Janes | Electro-magnetic actuator |
FR1461135A (en) * | 1965-12-22 | 1966-01-07 | Rolling rotor inductor synchronous motor | |
BE713809A (en) * | 1968-04-17 | 1968-09-16 | ||
FR2351530A1 (en) * | 1976-05-14 | 1977-12-09 | Matra | IMPROVEMENTS TO REDUCING DEVICES WITH ELECTRIC MOTORS |
DE3043233A1 (en) * | 1980-11-15 | 1982-07-01 | Teldix Gmbh, 6900 Heidelberg | Stepping motor assembly - has electromagnet tilting rotor so that teeth engage stator teeth and lock rotor in position |
FR2547885A1 (en) * | 1983-06-13 | 1984-12-28 | Windwinder Corp | DEVICE FOR CONVERTING MOTION OF ROTATION IN MOTION OF TRANSLATION |
-
1987
- 1987-01-20 WO PCT/GB1987/000034 patent/WO1987004574A1/en unknown
- 1987-01-20 AU AU68960/87A patent/AU6896087A/en not_active Abandoned
- 1987-01-20 GB GB8817246A patent/GB2205452B/en not_active Expired - Lifetime
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2857536A (en) * | 1955-07-18 | 1958-10-21 | Edward C Light | Variable reluctance machine |
US3200668A (en) * | 1964-05-22 | 1965-08-17 | Charles F Janes | Electro-magnetic actuator |
FR1461135A (en) * | 1965-12-22 | 1966-01-07 | Rolling rotor inductor synchronous motor | |
BE713809A (en) * | 1968-04-17 | 1968-09-16 | ||
FR2351530A1 (en) * | 1976-05-14 | 1977-12-09 | Matra | IMPROVEMENTS TO REDUCING DEVICES WITH ELECTRIC MOTORS |
DE3043233A1 (en) * | 1980-11-15 | 1982-07-01 | Teldix Gmbh, 6900 Heidelberg | Stepping motor assembly - has electromagnet tilting rotor so that teeth engage stator teeth and lock rotor in position |
FR2547885A1 (en) * | 1983-06-13 | 1984-12-28 | Windwinder Corp | DEVICE FOR CONVERTING MOTION OF ROTATION IN MOTION OF TRANSLATION |
Also Published As
Publication number | Publication date |
---|---|
AU6896087A (en) | 1987-08-14 |
WO1987004574A1 (en) | 1987-07-30 |
GB8817246D0 (en) | 1988-08-24 |
GB2205452A (en) | 1988-12-07 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 19940120 |