GB940233A - Dynamo-electric machines - Google Patents

Dynamo-electric machines

Info

Publication number
GB940233A
GB940233A GB708661A GB708661A GB940233A GB 940233 A GB940233 A GB 940233A GB 708661 A GB708661 A GB 708661A GB 708661 A GB708661 A GB 708661A GB 940233 A GB940233 A GB 940233A
Authority
GB
United Kingdom
Prior art keywords
machine
laminμ
projecting
dynamo
jarret
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
GB708661A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB940233A publication Critical patent/GB940233A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H02K1/22—Rotating parts of the magnetic circuit
    • H02K1/24—Rotor cores with salient poles ; Variable reluctance rotors
    • H02K1/246—Variable reluctance rotors
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K19/00—Synchronous motors or generators
    • H02K19/02—Synchronous motors
    • H02K19/04—Synchronous motors for single-phase current
    • H02K19/06—Motors having windings on the stator and a variable-reluctance soft-iron rotor without windings, e.g. inductor motors
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K19/00—Synchronous motors or generators
    • H02K19/16—Synchronous generators
    • H02K19/22—Synchronous generators having windings each turn of which co-operates alternately with poles of opposite polarity, e.g. heteropolar generators
    • H02K19/24—Synchronous generators having windings each turn of which co-operates alternately with poles of opposite polarity, e.g. heteropolar generators with variable-reluctance soft-iron rotors without winding

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Synchronous Machinery (AREA)
  • Permanent Magnet Type Synchronous Machine (AREA)

Abstract

940,233. Dynamo-electric machines. J. JARRET, and J. JARRET. Feb. 27, 1961 [Feb. 29, 1960], No. 7086/61. Heading H2A. In a dynamo-electric machine, for example an inductor alternator or a synchronous motor the rotor comprises alternate projecting laminµ 2 (Fig. 2) of high purity iron separated by silicon steel spacers 10, the projecting laminµ 2 being magnetically saturated in use at a value of magnetizing field much lower than that at which the other magnetic parts of the machine are saturated. The Specification alleges that since the maximum torque of a machine is dependent on the amplitude of the flux variation (from a maximum when the rotor and stator teeth are aligned to a minimum when they are out of register) the use of high purity iron projections reduces hysteresis losses, thus allowing a greater field excitation to be used and thus increasing the efficiency of the machine. The description explains with reference to a bipolar synchronous motor (Fig. 2, not shown) how to calculate the ratio of the thickness of the projecting laminµ to the thickness of the spacers. A 4-pole alternator (Fig. 3) embodying the principle of the invention has stator windings 14a, 14b, 14c, 14d interconnected to form an impedance bridge with a D.C. source 17 connected across one diagonal and an A.C. output taken across the other. The invention may also be applied to reciprocating machines.
GB708661A 1960-02-29 1961-02-27 Dynamo-electric machines Expired GB940233A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR819923A FR1258306A (en) 1960-02-29 1960-02-29 Improvements made to electric machines of the variable reluctance type

Publications (1)

Publication Number Publication Date
GB940233A true GB940233A (en) 1963-10-30

Family

ID=8726039

Family Applications (1)

Application Number Title Priority Date Filing Date
GB708661A Expired GB940233A (en) 1960-02-29 1961-02-27 Dynamo-electric machines

Country Status (4)

Country Link
BE (1) BE600687A (en)
CH (1) CH373098A (en)
FR (1) FR1258306A (en)
GB (1) GB940233A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2149587A (en) * 1983-09-29 1985-06-12 Okuma Machinery Works Ltd Synchronous motors and control units thereof

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH413084A (en) * 1962-02-05 1966-05-15 Jarret Jean Electric variable reluctance machine
FR2541832B1 (en) * 1983-02-28 1985-06-07 Alsthom Atlantique ROTATING COMPENSATOR
JPH10108437A (en) * 1996-09-30 1998-04-24 Aisin Seiki Co Ltd Switched reluctance motor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2149587A (en) * 1983-09-29 1985-06-12 Okuma Machinery Works Ltd Synchronous motors and control units thereof

Also Published As

Publication number Publication date
BE600687A (en) 1961-06-16
FR1258306A (en) 1961-04-14
CH373098A (en) 1963-11-15

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