JPS6460285A - Controller for induction motor - Google Patents

Controller for induction motor

Info

Publication number
JPS6460285A
JPS6460285A JP62215517A JP21551787A JPS6460285A JP S6460285 A JPS6460285 A JP S6460285A JP 62215517 A JP62215517 A JP 62215517A JP 21551787 A JP21551787 A JP 21551787A JP S6460285 A JPS6460285 A JP S6460285A
Authority
JP
Japan
Prior art keywords
carrier wave
induction motor
pwm
frequency
generator
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
JP62215517A
Other languages
Japanese (ja)
Other versions
JPH0787716B2 (en
Inventor
Nobuyoshi Muto
Keijiro Sakai
Sadayuki Igarashi
Akiteru Ueda
Hiroyuki Tomita
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
Hitachi Keiyo Engineering Co Ltd
Original Assignee
Hitachi Ltd
Hitachi Keiyo Engineering 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 Hitachi Ltd, Hitachi Keiyo Engineering Co Ltd filed Critical Hitachi Ltd
Priority to JP62215517A priority Critical patent/JPH0787716B2/en
Publication of JPS6460285A publication Critical patent/JPS6460285A/en
Publication of JPH0787716B2 publication Critical patent/JPH0787716B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Control Of Ac Motors In General (AREA)
  • Inverter Devices (AREA)

Abstract

PURPOSE:To allow an induction motor to be stably driven with current respon siveness fully ensured even in high speed range, by increasing the frequency of a carrier wave when the motor speed exceeds the limits where the pulse number of a PWM signal comes to be reduced rapidly. CONSTITUTION:A DC power supply 10 is applied to an induction motor 40 through a PWM inverter 20. Comparators 91, 93 compares each voltage com mand signal with the carrier wave from a carrier wave generator 113. They produce three-phase PWM signals and a gate drive circuit 100 produces gate signals in correspondence with these PWM signals and applies them to each power switching element of a PWM inverter 20. The carrier wave frequency from the carrier wave generator 113 is variably controlled by the command from a carrier wave frequency command generator 112 in accordance with the rotating speed of the induction motor 40.
JP62215517A 1987-08-31 1987-08-31 Induction motor controller Expired - Lifetime JPH0787716B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62215517A JPH0787716B2 (en) 1987-08-31 1987-08-31 Induction motor controller

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62215517A JPH0787716B2 (en) 1987-08-31 1987-08-31 Induction motor controller

Publications (2)

Publication Number Publication Date
JPS6460285A true JPS6460285A (en) 1989-03-07
JPH0787716B2 JPH0787716B2 (en) 1995-09-20

Family

ID=16673721

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62215517A Expired - Lifetime JPH0787716B2 (en) 1987-08-31 1987-08-31 Induction motor controller

Country Status (1)

Country Link
JP (1) JPH0787716B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017017803A (en) * 2015-06-29 2017-01-19 東芝三菱電機産業システム株式会社 Triangular wave comparison pwm generation device

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS538885A (en) * 1976-07-13 1978-01-26 Nippon Shinpan Seisakushiyo Kk Device for detecting and exhausting defective goods of work in machine tool with autoloader
JPS59188377A (en) * 1983-04-08 1984-10-25 Mitsubishi Electric Corp Controlling method of pulse width modulation type voltage inverter
JPS6091898A (en) * 1983-10-20 1985-05-23 Nissan Motor Co Ltd Controller of ac motor
JPS60187292A (en) * 1984-03-07 1985-09-24 Mitsubishi Electric Corp Inverter device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS538885A (en) * 1976-07-13 1978-01-26 Nippon Shinpan Seisakushiyo Kk Device for detecting and exhausting defective goods of work in machine tool with autoloader
JPS59188377A (en) * 1983-04-08 1984-10-25 Mitsubishi Electric Corp Controlling method of pulse width modulation type voltage inverter
JPS6091898A (en) * 1983-10-20 1985-05-23 Nissan Motor Co Ltd Controller of ac motor
JPS60187292A (en) * 1984-03-07 1985-09-24 Mitsubishi Electric Corp Inverter device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017017803A (en) * 2015-06-29 2017-01-19 東芝三菱電機産業システム株式会社 Triangular wave comparison pwm generation device

Also Published As

Publication number Publication date
JPH0787716B2 (en) 1995-09-20

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