JPS57186953A - Monitor for synchronous brushless machine - Google Patents

Monitor for synchronous brushless machine

Info

Publication number
JPS57186953A
JPS57186953A JP56071814A JP7181481A JPS57186953A JP S57186953 A JPS57186953 A JP S57186953A JP 56071814 A JP56071814 A JP 56071814A JP 7181481 A JP7181481 A JP 7181481A JP S57186953 A JPS57186953 A JP S57186953A
Authority
JP
Japan
Prior art keywords
voltage
detected
earth
rotor shaft
points
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
JP56071814A
Other languages
Japanese (ja)
Inventor
Nobumasa Amagasa
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP56071814A priority Critical patent/JPS57186953A/en
Priority to EP19820901372 priority patent/EP0078852A4/en
Priority to US06/456,013 priority patent/US4492999A/en
Priority to PCT/JP1982/000161 priority patent/WO1982004164A1/en
Publication of JPS57186953A publication Critical patent/JPS57186953A/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
    • G01R31/343—Testing dynamo-electric machines in operation

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)

Abstract

PURPOSE:To perform surely monitoring of an abnormality of shaft voltage of a synchronous brushless machine by a method wherein a voltage between two points of a rotor shaft, a voltage between the rotor shaft and the earth, and a voltage between the neutral point of the secondary winding of an excitor and the earth are detected to compare the voltage values and the frequency values. CONSTITUTION:Slip rings 13 and brushes 14 for detection are provided at the two points of the rotor shaft 4 of a synchronous brushless machine, and the voltage between the two points are detected with a voltage detector 16. A resistor 15 is inserted between the rotor shaft and the earth, and the voltage is detected with a voltage detector 17. Moreover a slip ring 18 and a brush 19 for detection are connected to the neutral point of the secondary winding of the brushless excitor 5, and the voltage between the earth is detected with a voltage detector 21. Detected signals of the respective detectors 16, 17, 21 are inputted into a voltage comparing circuit 22 and a frequency comparing circuit 23 to be compared, and when an abnormality is generated, output is send out from an abnormality detecting circuit 24 to monitor the shaft voltage.
JP56071814A 1981-05-09 1981-05-09 Monitor for synchronous brushless machine Pending JPS57186953A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP56071814A JPS57186953A (en) 1981-05-09 1981-05-09 Monitor for synchronous brushless machine
EP19820901372 EP0078852A4 (en) 1981-05-09 1982-05-10 Monitoring unit for the shaft-voltage of a rotary electric machine.
US06/456,013 US4492999A (en) 1981-05-09 1982-05-10 Supervisory unit for rotary electrical machinery and apparatus
PCT/JP1982/000161 WO1982004164A1 (en) 1981-05-09 1982-05-10 Monitoring unit for the shaft-voltage of a rotary electric machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56071814A JPS57186953A (en) 1981-05-09 1981-05-09 Monitor for synchronous brushless machine

Publications (1)

Publication Number Publication Date
JPS57186953A true JPS57186953A (en) 1982-11-17

Family

ID=13471399

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56071814A Pending JPS57186953A (en) 1981-05-09 1981-05-09 Monitor for synchronous brushless machine

Country Status (1)

Country Link
JP (1) JPS57186953A (en)

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