GB2205452B - Electrical machine - Google Patents

Electrical machine

Info

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
Application number
GB8817246A
Other versions
GB2205452A (en
GB8817246D0 (en
Inventor
Edward Spooner
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
University of Manchester Institute of Science and Technology (UMIST)
University of Manchester
Original Assignee
University of Manchester Institute of Science and Technology (UMIST)
University of Manchester
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from GB8601429A external-priority patent/GB8601429D0/en
Priority claimed from GB8608228A external-priority patent/GB8608228D0/en
Application filed by University of Manchester Institute of Science and Technology (UMIST), University of Manchester filed Critical University of Manchester Institute of Science and Technology (UMIST)
Publication of GB8817246D0 publication Critical patent/GB8817246D0/en
Publication of GB2205452A publication Critical patent/GB2205452A/en
Application granted granted Critical
Publication of GB2205452B publication Critical patent/GB2205452B/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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.
GB8817246A 1986-01-21 1987-01-20 Electrical machine Expired - Lifetime GB2205452B (en)

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)

* Cited by examiner, † Cited by third party
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

Patent Citations (7)

* Cited by examiner, † Cited by third party
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
GB2205452A (en) 1988-12-07
GB8817246D0 (en) 1988-08-24

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19940120