JPS5546895A - Control device for induction motor - Google Patents

Control device for induction motor

Info

Publication number
JPS5546895A
JPS5546895A JP11875278A JP11875278A JPS5546895A JP S5546895 A JPS5546895 A JP S5546895A JP 11875278 A JP11875278 A JP 11875278A JP 11875278 A JP11875278 A JP 11875278A JP S5546895 A JPS5546895 A JP S5546895A
Authority
JP
Japan
Prior art keywords
control
voltage
basic
motor
speed
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
JP11875278A
Other languages
Japanese (ja)
Other versions
JPS5828832B2 (en
Inventor
Tadayoshi Banba
Hiroshi Miki
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.)
Fuji Electric Co Ltd
Original Assignee
Fuji Electric 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 Fuji Electric Co Ltd filed Critical Fuji Electric Co Ltd
Priority to JP53118752A priority Critical patent/JPS5828832B2/en
Publication of JPS5546895A publication Critical patent/JPS5546895A/en
Publication of JPS5828832B2 publication Critical patent/JPS5828832B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Control Of Ac Motors In General (AREA)

Abstract

PURPOSE: To control a motor stably and at a constant power level, by controlling a voltage-power ratio constantly until the basic r.p.m. of a motor is reached, and by changing the type of control from the voltage control to the r.p.m. control.
CONSTITUTION: A speed instruction is given by a speed setting unit 3, and the r.p.m. of a motor 2 reaches the instructed speed after the time set by an acceleration and deceleration regulator 4. If the speed instruction indicates the r.p.m. below the basic r.p.m., limiting action of a voltage limiter 6 is not actuated, and the output voltage and frequency of an invertor are limited to the constant ratio resulted from the comparison of the speed-instruction signal and the output voltage V. If the speed instruction is set above the basic r.p.m., the voltage limiter initiates the limiting action, and the output voltage of the inverter becomes constant regardless of the instruction. In this constitution, since the constant V/F control is made up to the basic r.p.m. of the motor, and the control is changed from the voltage control to the r.p.m. control in the region beyond the basic r.p.m., the stable control and the constant-power control of a motor can be made.
COPYRIGHT: (C)1980,JPO&Japio
JP53118752A 1978-09-27 1978-09-27 Induction motor control device Expired JPS5828832B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP53118752A JPS5828832B2 (en) 1978-09-27 1978-09-27 Induction motor control device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP53118752A JPS5828832B2 (en) 1978-09-27 1978-09-27 Induction motor control device

Publications (2)

Publication Number Publication Date
JPS5546895A true JPS5546895A (en) 1980-04-02
JPS5828832B2 JPS5828832B2 (en) 1983-06-18

Family

ID=14744170

Family Applications (1)

Application Number Title Priority Date Filing Date
JP53118752A Expired JPS5828832B2 (en) 1978-09-27 1978-09-27 Induction motor control device

Country Status (1)

Country Link
JP (1) JPS5828832B2 (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5031331A (en) * 1973-05-15 1975-03-27
JPS5396111A (en) * 1977-01-31 1978-08-23 Mitsubishi Electric Corp Induction motor control circuit for electric car

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5031331A (en) * 1973-05-15 1975-03-27
JPS5396111A (en) * 1977-01-31 1978-08-23 Mitsubishi Electric Corp Induction motor control circuit for electric car

Also Published As

Publication number Publication date
JPS5828832B2 (en) 1983-06-18

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