JPS5629449A - Detector for abnormality in field-winding at revolving-field type rotary machine - Google Patents

Detector for abnormality in field-winding at revolving-field type rotary machine

Info

Publication number
JPS5629449A
JPS5629449A JP10273879A JP10273879A JPS5629449A JP S5629449 A JPS5629449 A JP S5629449A JP 10273879 A JP10273879 A JP 10273879A JP 10273879 A JP10273879 A JP 10273879A JP S5629449 A JPS5629449 A JP S5629449A
Authority
JP
Japan
Prior art keywords
search coil
magnetic flux
field winding
field
detector
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.)
Granted
Application number
JP10273879A
Other languages
Japanese (ja)
Other versions
JPS6336224B2 (en
Inventor
Motoya Ito
Toshio Saito
Yukinori Sato
Noriyoshi Takahashi
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 JP10273879A priority Critical patent/JPS5629449A/en
Publication of JPS5629449A publication Critical patent/JPS5629449A/en
Publication of JPS6336224B2 publication Critical patent/JPS6336224B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
    • H02K11/20—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for measuring, monitoring, testing, protecting or switching
    • H02K11/26—Devices for sensing voltage, or actuated thereby, e.g. overvoltage protection devices
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
    • H02K11/20—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for measuring, monitoring, testing, protecting or switching

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • Synchronous Machinery (AREA)

Abstract

PURPOSE:To detect a leaking magnetic flux in a condition having little influence of a main magnetic flux and to detect an interlayer short trouble of a field winding with a detected abnormal current by a method wherein a magnetic flux detector is provided outside core gap at a corresponding position in a vicinity of outside diameter side of a field winding. CONSTITUTION:A search coil 14 is provided at a point outside the end surface of a stator core 2 of axial air gap 9 corresponding to a section extending to the axial direction of a field winding 8. Said search coil 14 has a mounting groove at the head of its end section spacer 16 and it is fixed by inserting the base section of an L- shaped supportng arm 19, to be used to fix a search coil 14, into said mounting groove. A nonmagnetic and nonconductive material is used for the supporting arm 19 and at the point of which a search coil 14 is tightly fixed with resin. As a result, a pulsating wave form of groove period is observed from a voltage wave form generated at the search coil 14 and an interlayer short can be detected accurately.
JP10273879A 1979-08-14 1979-08-14 Detector for abnormality in field-winding at revolving-field type rotary machine Granted JPS5629449A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10273879A JPS5629449A (en) 1979-08-14 1979-08-14 Detector for abnormality in field-winding at revolving-field type rotary machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10273879A JPS5629449A (en) 1979-08-14 1979-08-14 Detector for abnormality in field-winding at revolving-field type rotary machine

Publications (2)

Publication Number Publication Date
JPS5629449A true JPS5629449A (en) 1981-03-24
JPS6336224B2 JPS6336224B2 (en) 1988-07-19

Family

ID=14335577

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10273879A Granted JPS5629449A (en) 1979-08-14 1979-08-14 Detector for abnormality in field-winding at revolving-field type rotary machine

Country Status (1)

Country Link
JP (1) JPS5629449A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1220429A3 (en) * 2000-12-27 2003-05-07 Minebea Co., Ltd. Stepping motor, stepping motor device and driving method thereof

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5443509A (en) * 1977-09-13 1979-04-06 Sony Corp Detecting rotor poition in brushless motor

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5443509A (en) * 1977-09-13 1979-04-06 Sony Corp Detecting rotor poition in brushless motor

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1220429A3 (en) * 2000-12-27 2003-05-07 Minebea Co., Ltd. Stepping motor, stepping motor device and driving method thereof
US6700240B2 (en) 2000-12-27 2004-03-02 Minebea Co., Ltd. Stepping motor, stepping motor device and driving method thereof
US6900612B2 (en) 2000-12-27 2005-05-31 Minebea Co., Ltd. Stepping motor, stepping motor device and driving method thereof

Also Published As

Publication number Publication date
JPS6336224B2 (en) 1988-07-19

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