JPS54113820A - Protective device for ac motor - Google Patents

Protective device for ac motor

Info

Publication number
JPS54113820A
JPS54113820A JP2085378A JP2085378A JPS54113820A JP S54113820 A JPS54113820 A JP S54113820A JP 2085378 A JP2085378 A JP 2085378A JP 2085378 A JP2085378 A JP 2085378A JP S54113820 A JPS54113820 A JP S54113820A
Authority
JP
Japan
Prior art keywords
motor
input terminal
voltage
reactor
higher harmonic
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
JP2085378A
Other languages
Japanese (ja)
Inventor
Akira Nadawae
Hiroshi Uchino
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP2085378A priority Critical patent/JPS54113820A/en
Publication of JPS54113820A publication Critical patent/JPS54113820A/en
Pending legal-status Critical Current

Links

Landscapes

  • Control Of Ac Motors In General (AREA)

Abstract

PURPOSE: To make a reduction of higher harmonic voltage in the armature winding, by connecting a condenser between input terminals or between the input terminal and the ground of AC motor as well as connecting a reactor between the input terminal of the AC motor and an output terminal of the switching device.
CONSTITUTION: Between an input terminal of the AC motor 3 and an output terminal of the switching device 2, for on-off controlling a voltage applied to the input terminal of the AC motor 3, is connected a higher harmonic absorbing reactor 4 to 6, and between the input terminals of the AC motor 3 or between the input terminal and the ground, is connected a condenser 7 to 9. In this way, a higher harmonic voltage is almost mainly applied to the reactor 10, with a voltage, applied to the armature winding, reduced to ΔEd.
COPYRIGHT: (C)1979,JPO&Japio
JP2085378A 1978-02-27 1978-02-27 Protective device for ac motor Pending JPS54113820A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2085378A JPS54113820A (en) 1978-02-27 1978-02-27 Protective device for ac motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2085378A JPS54113820A (en) 1978-02-27 1978-02-27 Protective device for ac motor

Publications (1)

Publication Number Publication Date
JPS54113820A true JPS54113820A (en) 1979-09-05

Family

ID=12038649

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2085378A Pending JPS54113820A (en) 1978-02-27 1978-02-27 Protective device for ac motor

Country Status (1)

Country Link
JP (1) JPS54113820A (en)

Similar Documents

Publication Publication Date Title
JPS53109154A (en) Higher harmonic remover
JPS5484425A (en) Switching regulator
JPS538731A (en) Control device of inverter
JPS54113820A (en) Protective device for ac motor
JPS5317932A (en) Electric current source circuit
JPS536852A (en) Converting means
JPS5431546A (en) Direct current constant voltage electric source device
JPS5324514A (en) Generator device
JPS5317931A (en) Electric current source circuit
JPS54106816A (en) Control system for ac motor
JPS53106417A (en) Thyristor scherbius device
JPS52149743A (en) Elevator starting control device
JPS5385341A (en) Inverter control circuit
JPS54111613A (en) Starting system of synchronous motor
JPS51118059A (en) Switching mode regulator circuit
JPS5260921A (en) Voltage regulator in vehicle a.c. generator
JPS5325819A (en) Wave form and power factor improving system
JPS53107632A (en) Operating dc power transmission system
JPS52120353A (en) Protective device for dc power transmission system
JPS53100420A (en) Thyristor motor control device
JPS5415132A (en) Inverter
JPS54108251A (en) Protective relay device
JPS54156130A (en) Power converter
JPS5559514A (en) Ac constant current circuit
JPS5350418A (en) Starting system for motor