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JPS5662056A - Dc machine - Google Patents

Dc machine

Info

Publication number
JPS5662056A
JPS5662056A JP13775579A JP13775579A JPS5662056A JP S5662056 A JPS5662056 A JP S5662056A JP 13775579 A JP13775579 A JP 13775579A JP 13775579 A JP13775579 A JP 13775579A JP S5662056 A JPS5662056 A JP S5662056A
Authority
JP
Japan
Prior art keywords
yoke
section
magnetic flux
poles
nonmagnetic
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
JP13775579A
Other languages
Japanese (ja)
Inventor
Hajime Ii
Ikuo Oishi
Kenji Midorikawa
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP13775579A priority Critical patent/JPS5662056A/en
Publication of JPS5662056A publication Critical patent/JPS5662056A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K23/00—DC commutator motors or generators having mechanical commutator; Universal AC/DC commutator motors
    • H02K23/40—DC commutator motors or generators having mechanical commutator; Universal AC/DC commutator motors characterised by the arrangement of the magnet circuits

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Dc Machiner (AREA)

Abstract

PURPOSE:To obtain an excellent commutating property even when the subject machine is driven by a pulsating voltage using a method wherein a nonmagnetic section, to be used for reducing the magnetic flux circulating cross section, is provided at a point between the main poles and the intered poles on the inner circumference of a circular yoke. CONSTITUTION:A plurality of main poles 4 and inter poles 7 are provided on the inner surface of a circular yoke 1, and on the inner surface of the yoke 1 located between each main pole 4 and inter pole 7, a cut slit 9 directing from the inner circumference toward the outer circumference and extending to the axial direction, for instance, or a nonmagnetic section, which has been formed by filling up a nonmagnetic material in the slit 9, is provided. Hereby, the magnetic flux circulating cross section of the yoke 1 on the external side of the nonmagnetic section is reduced, the AC magnetic flux, to be contained in the field magnetic flux and having the property of running the inner circumference of the yoke 1, is sharply decreased, thereby enabling to reduce the transformer electromotive force which will be generated at an armature.
JP13775579A 1979-10-26 1979-10-26 Dc machine Pending JPS5662056A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13775579A JPS5662056A (en) 1979-10-26 1979-10-26 Dc machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13775579A JPS5662056A (en) 1979-10-26 1979-10-26 Dc machine

Publications (1)

Publication Number Publication Date
JPS5662056A true JPS5662056A (en) 1981-05-27

Family

ID=15206068

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13775579A Pending JPS5662056A (en) 1979-10-26 1979-10-26 Dc machine

Country Status (1)

Country Link
JP (1) JPS5662056A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3521039A1 (en) * 1985-06-12 1986-12-18 Robert Bosch Gmbh, 7000 Stuttgart Commutator motor
US4874975A (en) * 1984-11-13 1989-10-17 Digital Equipment Corporation Brushless DC motor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4874975A (en) * 1984-11-13 1989-10-17 Digital Equipment Corporation Brushless DC motor
DE3521039A1 (en) * 1985-06-12 1986-12-18 Robert Bosch Gmbh, 7000 Stuttgart Commutator motor

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