GB1332642A - Rotary electric machines - Google Patents

Rotary electric machines

Info

Publication number
GB1332642A
GB1332642A GB1332642DA GB1332642A GB 1332642 A GB1332642 A GB 1332642A GB 1332642D A GB1332642D A GB 1332642DA GB 1332642 A GB1332642 A GB 1332642A
Authority
GB
United Kingdom
Prior art keywords
rotor
webs
magnet
adjacent
slots
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
Application number
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.)
Plessey Co Ltd
Original Assignee
Plessey Co Ltd
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
Application filed by Plessey Co Ltd filed Critical Plessey Co Ltd
Publication of GB1332642A publication Critical patent/GB1332642A/en
Expired legal-status Critical Current

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
    • H02K21/38—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with rotating flux distributors, and armatures and magnets both stationary
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
    • G01P3/42—Devices characterised by the use of electric or magnetic means
    • G01P3/44—Devices characterised by the use of electric or magnetic means for measuring angular speed
    • G01P3/46—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring amplitude of generated current or voltage
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
    • G01P3/42—Devices characterised by the use of electric or magnetic means
    • G01P3/44—Devices characterised by the use of electric or magnetic means for measuring angular speed
    • G01P3/46—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring amplitude of generated current or voltage
    • G01P3/465—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring amplitude of generated current or voltage by using dynamo-electro tachometers or electric generator
    • 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
    • H02K21/38—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with rotating flux distributors, and armatures and magnets both stationary
    • H02K21/42—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with rotating flux distributors, and armatures and magnets both stationary with flux distributors rotating around the armatures and within the magnets

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Permanent Magnet Type Synchronous Machine (AREA)

Abstract

1332642 Machines with permanent magnets PLESSEY CO Ltd 1 Jan 1971 [3 Oct 1969] 48744/69 Heading H2A A motor or generator (e.g. a tachometer generator) comprises an annular permanent magnet 1 presenting a plurality of adjacent pole-pairs on one face to a slotted rotor 3 located between the magnet and a winding 10. As shown, the machine has a planar air gap and the winding 10 is surrounded by an annular steel casing 11 of U-shaped cross-section, the limbs of which are located adjacent inner and outer parts 9, 8 of the rotor on opposite sides of the slots 6. Adjacent webs 7 between the slots are reduced at opposite ends by arcuate slots 12 which form magnetically saturated portions so that the webs in effect form imbricated poles. When the machine operates as a generator adjacent webs are oppositely magnetized by the magnet 1 and the parts 8, 9 of the rotor thus assume opposite polarities which alternate as the rotor rotates. Alternatively when the machine operates as a motor an alternating signal applied to the coil 10 alternately magnetizes the parts 8, 9, and hence adjacent webs, with opposite polarities, the magnetized webs reacting with the poles of magnet 1 to produce rotation of the rotor. The webs may be made asymmetical to assist starting or two rotors may be placed side-byside with one displaced relative to the other by half a slot. According to a further embodiment, Fig. 3 (not shown), the rotor is cupshaped and the skirt of the cup rotates between the permanent magnet and coil which are positioned coaxially one within the other.
GB1332642D 1969-10-03 1969-10-03 Rotary electric machines Expired GB1332642A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4874469 1969-10-03

Publications (1)

Publication Number Publication Date
GB1332642A true GB1332642A (en) 1973-10-03

Family

ID=10449756

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1332642D Expired GB1332642A (en) 1969-10-03 1969-10-03 Rotary electric machines

Country Status (1)

Country Link
GB (1) GB1332642A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2362516A1 (en) * 1975-08-22 1978-03-17 Tokai Rika Co Ltd Miniature motor with permanent magnet stator - has disc type rotor slotted to produce effect of discrete poles
FR2396448A1 (en) * 1977-06-30 1979-01-26 Horstmann Magnetics Ltd IMPROVEMENTS TO ELECTRIC MOTORS
EP0128520A2 (en) * 1983-06-14 1984-12-19 Kollmorgen Corporation DC tachometer
ITRM20130612A1 (en) * 2013-11-07 2014-02-06 Domenico Chianese ROTARY IRON ELECTRIC CURRENT GENERATOR, WITH PERMANENT MAGNETS, INDUCTORS AND REAL ESTATE STATORS, WITHOUT BRUSHES, WITH EASY ROTATION THROUGH A MAGNETIC REPULSION SYSTEM
EP3079243A1 (en) * 2015-04-08 2016-10-12 Panasonic Intellectual Property Management Co., Ltd. Electric generator
EP2649712A4 (en) * 2010-12-08 2017-08-02 Prototus, Ltd. Electromagnetic generator and method of using same

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2362516A1 (en) * 1975-08-22 1978-03-17 Tokai Rika Co Ltd Miniature motor with permanent magnet stator - has disc type rotor slotted to produce effect of discrete poles
FR2396448A1 (en) * 1977-06-30 1979-01-26 Horstmann Magnetics Ltd IMPROVEMENTS TO ELECTRIC MOTORS
EP0128520A2 (en) * 1983-06-14 1984-12-19 Kollmorgen Corporation DC tachometer
EP0128520A3 (en) * 1983-06-14 1987-01-21 Kollmorgen Technologies Corporation Flux contoured rotary electromagnetic machine
EP2649712A4 (en) * 2010-12-08 2017-08-02 Prototus, Ltd. Electromagnetic generator and method of using same
AU2016201725B2 (en) * 2010-12-08 2018-03-08 Prototus, Ltd. Electromagnetic generator and method of using same
US10243440B2 (en) 2010-12-08 2019-03-26 Floor 36, Inc. Electromagnetic generator and method of using same
US11139726B2 (en) 2010-12-08 2021-10-05 Prototus, Ltd. Electromagnetic generator and method of using same
US11705797B2 (en) 2010-12-08 2023-07-18 Prototus, Ltd. Electromagnetic generator and method of using same
ITRM20130612A1 (en) * 2013-11-07 2014-02-06 Domenico Chianese ROTARY IRON ELECTRIC CURRENT GENERATOR, WITH PERMANENT MAGNETS, INDUCTORS AND REAL ESTATE STATORS, WITHOUT BRUSHES, WITH EASY ROTATION THROUGH A MAGNETIC REPULSION SYSTEM
EP3079243A1 (en) * 2015-04-08 2016-10-12 Panasonic Intellectual Property Management Co., Ltd. Electric generator
CN106059154A (en) * 2015-04-08 2016-10-26 松下知识产权经营株式会社 Electric generator

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees