JPS6434132A - Device for driving ac motor - Google Patents

Device for driving ac motor

Info

Publication number
JPS6434132A
JPS6434132A JP62188257A JP18825787A JPS6434132A JP S6434132 A JPS6434132 A JP S6434132A JP 62188257 A JP62188257 A JP 62188257A JP 18825787 A JP18825787 A JP 18825787A JP S6434132 A JPS6434132 A JP S6434132A
Authority
JP
Japan
Prior art keywords
motor
value
converter circuit
circuit
predetermined value
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
JP62188257A
Other languages
Japanese (ja)
Other versions
JPH0681416B2 (en
Inventor
Toru Tanahashi
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 JP62188257A priority Critical patent/JPH0681416B2/en
Publication of JPS6434132A publication Critical patent/JPS6434132A/en
Publication of JPH0681416B2 publication Critical patent/JPH0681416B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

  • Control Of Ac Motors In General (AREA)
  • Inverter Devices (AREA)
  • Protection Of Generators And Motors (AREA)
  • Protection Of Static Devices (AREA)

Abstract

PURPOSE:To increase the overload resistance of a converter circuit by detecting the input current of the converter circuit, turning OFF the transistor of the converter at a first predetermined value or more, and stopping a motor with a second predetermined value or more. CONSTITUTION:When a parallel circuit of a transistor and a diode energizes an AC motor 5 by a converter circuit 2 and an inverter circuit 4 provided at the sides of a bridge, the current value of the input side of the converter circuit 2 is detected by a detection circuit 14. If the detected value is larger than a first predetermined value, the transistor of the converter circuit 2 is turned OFF, and a main current is supplied to the diode. When the detected value becomes larger than a second predetermined value larger than the first value, the motor 5 is stopped. Thus, the motor 5 can be continued within a range of the energizing capacity of the diode even at the time of overload.
JP62188257A 1987-07-28 1987-07-28 AC motor drive Expired - Fee Related JPH0681416B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62188257A JPH0681416B2 (en) 1987-07-28 1987-07-28 AC motor drive

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62188257A JPH0681416B2 (en) 1987-07-28 1987-07-28 AC motor drive

Publications (2)

Publication Number Publication Date
JPS6434132A true JPS6434132A (en) 1989-02-03
JPH0681416B2 JPH0681416B2 (en) 1994-10-12

Family

ID=16220518

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62188257A Expired - Fee Related JPH0681416B2 (en) 1987-07-28 1987-07-28 AC motor drive

Country Status (1)

Country Link
JP (1) JPH0681416B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05207766A (en) * 1992-01-23 1993-08-13 Mitsubishi Electric Corp Method and device for overcurrent protection and overcurrent detector
JP2007006606A (en) * 2005-06-23 2007-01-11 Toshiba Corp Power converter
JP2011092004A (en) * 2004-10-04 2011-05-06 Daikin Industries Ltd Method for protecting pwm rectifier circuit and apparatus therefor

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05207766A (en) * 1992-01-23 1993-08-13 Mitsubishi Electric Corp Method and device for overcurrent protection and overcurrent detector
JP2011092004A (en) * 2004-10-04 2011-05-06 Daikin Industries Ltd Method for protecting pwm rectifier circuit and apparatus therefor
JP2011092005A (en) * 2004-10-04 2011-05-06 Daikin Industries Ltd Method for protecting pwm rectifier circuit and apparatus therefor
JP2007006606A (en) * 2005-06-23 2007-01-11 Toshiba Corp Power converter

Also Published As

Publication number Publication date
JPH0681416B2 (en) 1994-10-12

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Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees