GB1450032A - Electrical synchronous machines - Google Patents

Electrical synchronous machines

Info

Publication number
GB1450032A
GB1450032A GB3116972A GB3116972A GB1450032A GB 1450032 A GB1450032 A GB 1450032A GB 3116972 A GB3116972 A GB 3116972A GB 3116972 A GB3116972 A GB 3116972A GB 1450032 A GB1450032 A GB 1450032A
Authority
GB
United Kingdom
Prior art keywords
rotor
stator
elements
coils
synchronous
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
GB3116972A
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.)
EDA OVERSEAS Ltd
Original Assignee
EDA OVERSEAS 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 EDA OVERSEAS Ltd filed Critical EDA OVERSEAS Ltd
Priority to GB3116972A priority Critical patent/GB1450032A/en
Priority to ZA00739548A priority patent/ZA739548B/en
Priority to AU63781/73A priority patent/AU489307B2/en
Priority to DE2363834A priority patent/DE2363834A1/en
Priority to FR7346095A priority patent/FR2211786B1/fr
Priority to JP49004648A priority patent/JPS5047108A/ja
Priority to IN1321/CAL/1974A priority patent/IN142916B/en
Priority to US05/577,450 priority patent/US4007387A/en
Publication of GB1450032A publication Critical patent/GB1450032A/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
    • H02K21/02—Details
    • H02K21/04—Windings on magnets for additional excitation ; Windings and magnets for additional excitation
    • H02K21/042—Windings on magnets for additional excitation ; Windings and magnets for additional excitation with permanent magnets and field winding both rotating
    • 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
    • H02K7/18—Structural association of electric generators with mechanical driving motors, e.g. with turbines
    • H02K7/1807—Rotary generators

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Permanent Magnet Type Synchronous Machine (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)

Abstract

1450032 Synchronous machines EDA (OVERSEAS) Ltd 21 Dec 1973 [23 Dec 1972] 31169/72 Heading H2A In a synchronous motor/generator, the rotor 10 comprises a plurality of field coils 31 of spatially alternating polarity arranged on magnetic core elements 25 disposed around the axis of the rotor for producing a magnetic field which extends axially away from the rotor, and the stator (Fig. 6, not shown) comprises a facewound annular core of the type described in Specification 1,450,031, the rotor and stator being relatively mounted and positioned with no direct mechanical connection therebetween, e.g. as in Figs. 7, 8 (not shown) or Figs. 9, 10 (not shown) as detailed in the foregoing Specification. The elements 25, which are mounted on a backplate 12 and which have chamfered-edge pole shoes 29 fixed at their front faces, incorporate permanent magnets 27 for increasing the starting fields when the machine acts as a generator. When however the machine acts as a motor, the elements may incorporate a flat squirrel cage type auxiliary winding as in Fig. 11 (not shown) wherein radial bars (110) are shorted by outer/inner bars (112, 114) any tendency to depart from synchronous speed then being counterbalanced by an induction motor effect. The coils 31 are normally fed from a D.C. source (38, Fig. 5, not shown) via slip rings (37), but are connected so that when the source is not applied the coils form a closed circuit. Fig. 12 (not shown) relates to a machine wherein the stator core comprises a closed circular band having a relatively large central aperture.
GB3116972A 1972-07-04 1972-12-23 Electrical synchronous machines Expired GB1450032A (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
GB3116972A GB1450032A (en) 1972-12-23 1972-12-23 Electrical synchronous machines
ZA00739548A ZA739548B (en) 1972-12-23 1973-12-18 Electrical synchronous machines
AU63781/73A AU489307B2 (en) 1972-07-04 1973-12-19 Electrical synchronous machines
DE2363834A DE2363834A1 (en) 1972-12-23 1973-12-21 ELECTRIC SYNCHRONOUS MACHINE
FR7346095A FR2211786B1 (en) 1972-12-23 1973-12-21
JP49004648A JPS5047108A (en) 1972-12-23 1973-12-24
IN1321/CAL/1974A IN142916B (en) 1972-12-23 1974-06-17
US05/577,450 US4007387A (en) 1972-12-23 1975-05-14 Electrical synchronous machines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3116972A GB1450032A (en) 1972-12-23 1972-12-23 Electrical synchronous machines

Publications (1)

Publication Number Publication Date
GB1450032A true GB1450032A (en) 1976-09-22

Family

ID=10319064

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3116972A Expired GB1450032A (en) 1972-07-04 1972-12-23 Electrical synchronous machines

Country Status (6)

Country Link
JP (1) JPS5047108A (en)
AU (1) AU489307B2 (en)
DE (1) DE2363834A1 (en)
GB (1) GB1450032A (en)
IN (1) IN142916B (en)
ZA (1) ZA739548B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008111851A1 (en) * 2007-03-14 2008-09-18 Fjerdingstad Technology Particle counter apparatus

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US365298A (en) * 1887-06-21 Child s carriage

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008111851A1 (en) * 2007-03-14 2008-09-18 Fjerdingstad Technology Particle counter apparatus
US8424397B2 (en) 2007-03-14 2013-04-23 Fras Technology As Particle counter apparatus

Also Published As

Publication number Publication date
AU489307B2 (en) 1977-12-07
JPS5047108A (en) 1975-04-26
AU6378173A (en) 1975-06-19
DE2363834A1 (en) 1974-06-27
IN142916B (en) 1977-09-10
ZA739548B (en) 1975-10-29

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Legal Events

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