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JPS5489205A - Permanent magnet type ac generator - Google Patents

Permanent magnet type ac generator

Info

Publication number
JPS5489205A
JPS5489205A JP15647477A JP15647477A JPS5489205A JP S5489205 A JPS5489205 A JP S5489205A JP 15647477 A JP15647477 A JP 15647477A JP 15647477 A JP15647477 A JP 15647477A JP S5489205 A JPS5489205 A JP S5489205A
Authority
JP
Japan
Prior art keywords
permanent magnet
magnetic
armature
generator
overloading
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.)
Pending
Application number
JP15647477A
Other languages
Japanese (ja)
Inventor
Yoshikazu Takekoshi
Takeshi Yagisawa
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP15647477A priority Critical patent/JPS5489205A/en
Publication of JPS5489205A publication Critical patent/JPS5489205A/en
Pending legal-status Critical Current

Links

Landscapes

  • Permanent Magnet Type Synchronous Machine (AREA)

Abstract

PURPOSE: To provide, when overloading occurs due to a shorting accident or the like, demagnetization-protection for a permanent magnet used as a rotor, by providing magnetic by-pass circuits at the opening portions of a plurality of slots formed in the inner periphery of a cylindrical iron-core.
CONSTITUTION: In an AC generator using a permanent magnet 3 as a rotor, magnetic wedges 5 are inserted into the opening portions of a plurality of slots provided in the inner surface of a cylindrical armature core to form the by-pass for the magnetic flux when overloading occurs due to a shorting accident or the like. Thus, in case of overloading, the magnetic flux 6 from the magnetic poles of the permanent magnet 3 passing through the armature core portion 7 is supprssed by the increased load resistance and said flux by-passes without crossing the armature coil 8, so that the voltage induced in the armature coil 8 and hence the armature current is reduced, resulting in the improvement of the demagnetization effect on the permanent magnet 3 forming the magetic poles.
COPYRIGHT: (C)1979,JPO&Japio
JP15647477A 1977-12-27 1977-12-27 Permanent magnet type ac generator Pending JPS5489205A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15647477A JPS5489205A (en) 1977-12-27 1977-12-27 Permanent magnet type ac generator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15647477A JPS5489205A (en) 1977-12-27 1977-12-27 Permanent magnet type ac generator

Publications (1)

Publication Number Publication Date
JPS5489205A true JPS5489205A (en) 1979-07-16

Family

ID=15628534

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15647477A Pending JPS5489205A (en) 1977-12-27 1977-12-27 Permanent magnet type ac generator

Country Status (1)

Country Link
JP (1) JPS5489205A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004039338A (en) * 2002-07-01 2004-02-05 Iq Four:Kk Large-sized discharge lamp-lighting system using small gas turbine generator
US8132528B2 (en) 2005-04-13 2012-03-13 I.M.A. Industria Macchine Automatiche S.P.A. Rotary pan

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004039338A (en) * 2002-07-01 2004-02-05 Iq Four:Kk Large-sized discharge lamp-lighting system using small gas turbine generator
US8132528B2 (en) 2005-04-13 2012-03-13 I.M.A. Industria Macchine Automatiche S.P.A. Rotary pan

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