JPS55111685A - Motor speed controller - Google Patents

Motor speed controller

Info

Publication number
JPS55111685A
JPS55111685A JP1733479A JP1733479A JPS55111685A JP S55111685 A JPS55111685 A JP S55111685A JP 1733479 A JP1733479 A JP 1733479A JP 1733479 A JP1733479 A JP 1733479A JP S55111685 A JPS55111685 A JP S55111685A
Authority
JP
Japan
Prior art keywords
current
motor
signal
current instruction
magnetic phase
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
JP1733479A
Other languages
Japanese (ja)
Inventor
Takeyoshi Ando
Kiyoya Shima
Toshiaki Kurosawa
Hiromi Inaba
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 JP1733479A priority Critical patent/JPS55111685A/en
Publication of JPS55111685A publication Critical patent/JPS55111685A/en
Pending legal-status Critical Current

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  • Control Of Direct Current Motors (AREA)

Abstract

PURPOSE: To improve the reliability and economy of a motor by forming a current controller for generating a phase signal corresponding to the deviation value between the current command from a signal controller and a current signal from the motor of a pair of positive and negative magnetic phase shifters.
CONSTITUTION: An elevator motor 8 is controlled at its speed by producing a current instruction in response to the deviation between the output from a speed instructing unit 1 and the outut from a speed detector 2, supplying the current instruction to a pair of positive and negative magnetic phase shifters 15, 16 with voltage drop occurred at the auxiliary winding 10 of the motor 8 as a feedback signal and controlling thyristor bridges 7a, 7b through pulse circuits 17, 18. The current instruction is applied to a hysteresis circuit 19. When the current instruction exceeds certain level, the polarity of the output signal is inverted. Thus, the current can be simply detected by using a magnetic phase shifter having preferable insulation to improve the safety and reliability of the motor.
COPYRIGHT: (C)1980,JPO&Japio
JP1733479A 1979-02-19 1979-02-19 Motor speed controller Pending JPS55111685A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1733479A JPS55111685A (en) 1979-02-19 1979-02-19 Motor speed controller

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1733479A JPS55111685A (en) 1979-02-19 1979-02-19 Motor speed controller

Publications (1)

Publication Number Publication Date
JPS55111685A true JPS55111685A (en) 1980-08-28

Family

ID=11941147

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1733479A Pending JPS55111685A (en) 1979-02-19 1979-02-19 Motor speed controller

Country Status (1)

Country Link
JP (1) JPS55111685A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63107481A (en) * 1986-10-21 1988-05-12 Sharp Corp Control system for 4-quadrant chopper

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63107481A (en) * 1986-10-21 1988-05-12 Sharp Corp Control system for 4-quadrant chopper

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