JPS5768694A - Controller for synchronous motor - Google Patents

Controller for synchronous motor

Info

Publication number
JPS5768694A
JPS5768694A JP55142070A JP14207080A JPS5768694A JP S5768694 A JPS5768694 A JP S5768694A JP 55142070 A JP55142070 A JP 55142070A JP 14207080 A JP14207080 A JP 14207080A JP S5768694 A JPS5768694 A JP S5768694A
Authority
JP
Japan
Prior art keywords
power
synchronous motor
factor
change
output
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
JP55142070A
Other languages
Japanese (ja)
Inventor
Yoshio Sekiyama
Hideo Tagami
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 JP55142070A priority Critical patent/JPS5768694A/en
Publication of JPS5768694A publication Critical patent/JPS5768694A/en
Pending 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
    • H02P25/00—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details
    • H02P25/02—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the kind of motor
    • H02P25/022—Synchronous motors
    • H02P25/024—Synchronous motors controlled by supply frequency

Abstract

PURPOSE:To remove an abnormal phenomenon such as the step-out of the synchronous motor by correcting an unstable condition due to the change of a loop gain of an automatic power-factor control system of a field current circuit owing to the change of load. CONSTITUTION:An active power detector 10 outputs value proportional to the active power of the synchronous motor 1, and the output is multiplied 12 by the deviation value of the output value of a power-factor detector 8 to the set value of a power-factor setter 6 through a function generator 11. Consequently, the amplification degree of the output of the multiplier 12 is varied by the magnitude of load. Accordingly, the amplification degree of the automatic control system is varied automatically by the quantity of the active power of the synchronous motor 1, and the unstable condition due to the change of the gain of an automatic power-factor control loop can be corrected.
JP55142070A 1980-10-13 1980-10-13 Controller for synchronous motor Pending JPS5768694A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55142070A JPS5768694A (en) 1980-10-13 1980-10-13 Controller for synchronous motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55142070A JPS5768694A (en) 1980-10-13 1980-10-13 Controller for synchronous motor

Publications (1)

Publication Number Publication Date
JPS5768694A true JPS5768694A (en) 1982-04-27

Family

ID=15306723

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55142070A Pending JPS5768694A (en) 1980-10-13 1980-10-13 Controller for synchronous motor

Country Status (1)

Country Link
JP (1) JPS5768694A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5329223A (en) * 1992-06-26 1994-07-12 Green Technologies, Inc. Ideal voltage controller for conserving energy in inductive loads
US5444359A (en) * 1992-06-26 1995-08-22 Green Technologies, Inc. Load sensitive variable voltage motor controller

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5329223A (en) * 1992-06-26 1994-07-12 Green Technologies, Inc. Ideal voltage controller for conserving energy in inductive loads
US5444359A (en) * 1992-06-26 1995-08-22 Green Technologies, Inc. Load sensitive variable voltage motor controller

Similar Documents

Publication Publication Date Title
JPS5534854A (en) Controlling method of secondary winding-exciting motor
JPS5768694A (en) Controller for synchronous motor
JPS5631370A (en) Controlling method for reactive power compensation type cyclo-converter
JPS57196323A (en) Power-factor controlling system of overvoltage suppressing device for reactive power compensating power converter
JPS54155425A (en) Control of inverter
JPS57122686A (en) Parallel operation controller for dc motor
JPS5574400A (en) System stabilizer
JPS5537866A (en) Speed controller for motor
JPS6450800A (en) Output voltage controller for generator
JPS5798A (en) Automatic voltage adjusting device
JPS55154617A (en) Control circuit for direct current power supply unit
JPS5523750A (en) Power-factor controller for synchronous motor
JPS54108214A (en) Biaxial synchronous excitation controller for crosscompound generator
JPS5541137A (en) Excitation controller
JPS54147411A (en) Automatic voltage adjuster
JPS5346626A (en) Power controller
JPS531821A (en) Dc-ac converter
JPS5449523A (en) Power converter controlling system
JPS56103973A (en) Load balancing circuit for power circuit
JPS5461629A (en) Inverter controller
JPS5517221A (en) Speed control system of motor
JPS5686099A (en) Limiting device for insufficient excitation
JPS54153237A (en) Controlling system of ac-dc converter
JPS5482649A (en) Controller for reactive power
JPS5725170A (en) Effective power controller for self-excited inverter