JPS57113380A - Stator core loss discriminating apparatus using 3rd higher harmonic component - Google Patents

Stator core loss discriminating apparatus using 3rd higher harmonic component

Info

Publication number
JPS57113380A
JPS57113380A JP18866080A JP18866080A JPS57113380A JP S57113380 A JPS57113380 A JP S57113380A JP 18866080 A JP18866080 A JP 18866080A JP 18866080 A JP18866080 A JP 18866080A JP S57113380 A JPS57113380 A JP S57113380A
Authority
JP
Japan
Prior art keywords
harmonic component
higher harmonic
stator
stator core
core loss
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
JP18866080A
Other languages
Japanese (ja)
Inventor
Noriaki Jinno
Yasuo Iijima
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP18866080A priority Critical patent/JPS57113380A/en
Publication of JPS57113380A publication Critical patent/JPS57113380A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/34—Testing dynamo-electric machines

Abstract

PURPOSE:To increase testing power and make arrangments simple by a method wherein whether stator core loss is acceptable or not is judged by exciting a stator with a predetermined frequency and by comparing the third higher harmonic component with a reference value. CONSTITUTION:A stator 1 of a motor for testing is excited by an excitation means consisting of a commercial power supply 3, a transformer 4, a current transformer 5 and a one turn excitation winding 6 with a copper bar and a signal detected by a detection winding 8 is amplified by an amplifier 9. Then the third higher harmonic component is extracted by a BPF10 with a central frequency 3 times as large as the basic wave. After this, a detected output reduced to a DC digital value by an AC-DC converter 11 and an AD converter 12 is compared with the reference value Vr in a digital comparator 13 and the result is displayed by a lamp 14. Thus data processing can be readily carried out for certain, whereas it can demonstrate effectiveness when utilized in production lines.
JP18866080A 1980-12-29 1980-12-29 Stator core loss discriminating apparatus using 3rd higher harmonic component Pending JPS57113380A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18866080A JPS57113380A (en) 1980-12-29 1980-12-29 Stator core loss discriminating apparatus using 3rd higher harmonic component

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18866080A JPS57113380A (en) 1980-12-29 1980-12-29 Stator core loss discriminating apparatus using 3rd higher harmonic component

Publications (1)

Publication Number Publication Date
JPS57113380A true JPS57113380A (en) 1982-07-14

Family

ID=16227609

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18866080A Pending JPS57113380A (en) 1980-12-29 1980-12-29 Stator core loss discriminating apparatus using 3rd higher harmonic component

Country Status (1)

Country Link
JP (1) JPS57113380A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009288010A (en) * 2008-05-28 2009-12-10 Nippon Steel Corp Core loss optimizing system
JP2014134448A (en) * 2013-01-10 2014-07-24 Kyushu Univ Magnetic property measuring device, magnetic property measuring probe, and magnetic property measuring method
PL423580A1 (en) * 2017-11-24 2019-06-03 Politechnika Gdanska Method for diagnostics of rolling bearings in the induction motor

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009288010A (en) * 2008-05-28 2009-12-10 Nippon Steel Corp Core loss optimizing system
JP2014134448A (en) * 2013-01-10 2014-07-24 Kyushu Univ Magnetic property measuring device, magnetic property measuring probe, and magnetic property measuring method
PL423580A1 (en) * 2017-11-24 2019-06-03 Politechnika Gdanska Method for diagnostics of rolling bearings in the induction motor

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