JPS5771289A - Power converter for driving of permanent magnet type motor - Google Patents

Power converter for driving of permanent magnet type motor

Info

Publication number
JPS5771289A
JPS5771289A JP55145808A JP14580880A JPS5771289A JP S5771289 A JPS5771289 A JP S5771289A JP 55145808 A JP55145808 A JP 55145808A JP 14580880 A JP14580880 A JP 14580880A JP S5771289 A JPS5771289 A JP S5771289A
Authority
JP
Japan
Prior art keywords
permanent magnet
set value
switching element
power converter
type motor
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
JP55145808A
Other languages
Japanese (ja)
Other versions
JPS6337600B2 (en
Inventor
Tsunehiro Endo
Fumio Tajima
Kenichi Iizuka
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 JP55145808A priority Critical patent/JPS5771289A/en
Publication of JPS5771289A publication Critical patent/JPS5771289A/en
Publication of JPS6337600B2 publication Critical patent/JPS6337600B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P6/00—Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/08—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)

Abstract

PURPOSE:To prevent reduced magnetism owing to overcurrent of a permanent magnet by making a switching element turned ON when current flowing through a power converter exceeds a first set value and turned OFF when it exceeds the second set value. CONSTITUTION:Three-phase AC is applied to an armature winding 6-1 of a permanent magnet type motor from a DC/AC converter 5 while DC of the converter 5 is detected with a current detector section 8, the outputs VId of which are applied to comparators 10 and 11. They are compared with a set value VI1 smaller than the allowable maximum current value of a switching element TR through the comparator 10 and with a set value VI2 smaller than the allowable maximum value of current flowing through the armature winding 6-1 without reducing magnetism of a permanent magnet 6-2 and signals S21-S26 are generated to turn OFF or ON the switching element TR. This prevents the flowing of overcurrent due to the breakdown of a transistor thereby avoiding the reduced magnetism of the permanent magnet 6-2.
JP55145808A 1980-10-20 1980-10-20 Power converter for driving of permanent magnet type motor Granted JPS5771289A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55145808A JPS5771289A (en) 1980-10-20 1980-10-20 Power converter for driving of permanent magnet type motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55145808A JPS5771289A (en) 1980-10-20 1980-10-20 Power converter for driving of permanent magnet type motor

Publications (2)

Publication Number Publication Date
JPS5771289A true JPS5771289A (en) 1982-05-04
JPS6337600B2 JPS6337600B2 (en) 1988-07-26

Family

ID=15393613

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55145808A Granted JPS5771289A (en) 1980-10-20 1980-10-20 Power converter for driving of permanent magnet type motor

Country Status (1)

Country Link
JP (1) JPS5771289A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4951529A (en) * 1972-09-22 1974-05-18
JPS5563579A (en) * 1978-11-04 1980-05-13 Fanuc Ltd Protective device for electric motor driving inverter circuit

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4951529A (en) * 1972-09-22 1974-05-18
JPS5563579A (en) * 1978-11-04 1980-05-13 Fanuc Ltd Protective device for electric motor driving inverter circuit

Also Published As

Publication number Publication date
JPS6337600B2 (en) 1988-07-26

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