JPH048185A - Emergency stop circuit for synchronous motor - Google Patents

Emergency stop circuit for synchronous motor

Info

Publication number
JPH048185A
JPH048185A JP10925090A JP10925090A JPH048185A JP H048185 A JPH048185 A JP H048185A JP 10925090 A JP10925090 A JP 10925090A JP 10925090 A JP10925090 A JP 10925090A JP H048185 A JPH048185 A JP H048185A
Authority
JP
Japan
Prior art keywords
synchronous motor
rotational speed
emergency stop
short circuit
feeder lines
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
JP10925090A
Other languages
Japanese (ja)
Inventor
Mitsuaki Sato
Original Assignee
Nec Corp
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 Nec Corp filed Critical Nec Corp
Priority to JP10925090A priority Critical patent/JPH048185A/en
Publication of JPH048185A publication Critical patent/JPH048185A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To shorten the brake distance at the time of emergency stop by detecting the rotational speed of a synchronous motor and making the short circuit resistance between feeder lines for the synchronous motor variable according to thus detected rotational speed.
CONSTITUTION: AC voltages R, S, T are fed to an inverter circuit 1 for driving a synchronous motor M1. A variable short circuit resistance circuit 2 is connected between feeder lines for the synchronous motor M1 and short-circuits the feeder lines through a resistor at the time of emergency stop. A rotational speed detecting circuit 3 is connected between the feeder lines for the synchronous motor M1 in order to detect the rotational speed of the synchronous motor M1 and to output a rotational speed signal Vω which is then fed to the variable short circuit resistance circuit 2 in order to vary the short circuit resistance in the variable short circuit resistance circuit 2 according to the rotational speed signal Vω.
COPYRIGHT: (C)1992,JPO&Japio
JP10925090A 1990-04-25 1990-04-25 Emergency stop circuit for synchronous motor Pending JPH048185A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10925090A JPH048185A (en) 1990-04-25 1990-04-25 Emergency stop circuit for synchronous motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10925090A JPH048185A (en) 1990-04-25 1990-04-25 Emergency stop circuit for synchronous motor

Publications (1)

Publication Number Publication Date
JPH048185A true JPH048185A (en) 1992-01-13

Family

ID=14505418

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10925090A Pending JPH048185A (en) 1990-04-25 1990-04-25 Emergency stop circuit for synchronous motor

Country Status (1)

Country Link
JP (1) JPH048185A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996006318A1 (en) * 1994-08-22 1996-02-29 Meratla Zoher M Method and apparatus for removing pollutants from flue gas
JPH1084694A (en) * 1996-04-15 1998-03-31 Mech Magnetique:Soc Turbo-molecular pump with dynamic magnetic bearing
JP2000037002A (en) * 1998-07-16 2000-02-02 Railway Technical Res Inst Electric braking device employing synchronous machine
JP2000510319A (en) * 1996-05-10 2000-08-08 エリクソン,ハンズ,ビルガー Motor braking method and braking device usable at all voltages
AT504808B1 (en) * 2003-11-14 2009-08-15 Bernecker & Rainer Ind Elektro Synchronous machine
WO2014091602A1 (en) * 2012-12-13 2014-06-19 三菱電機株式会社 Motor control device

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996006318A1 (en) * 1994-08-22 1996-02-29 Meratla Zoher M Method and apparatus for removing pollutants from flue gas
JPH1084694A (en) * 1996-04-15 1998-03-31 Mech Magnetique:Soc Turbo-molecular pump with dynamic magnetic bearing
JP2000510319A (en) * 1996-05-10 2000-08-08 エリクソン,ハンズ,ビルガー Motor braking method and braking device usable at all voltages
JP2000037002A (en) * 1998-07-16 2000-02-02 Railway Technical Res Inst Electric braking device employing synchronous machine
AT504808B1 (en) * 2003-11-14 2009-08-15 Bernecker & Rainer Ind Elektro Synchronous machine
WO2014091602A1 (en) * 2012-12-13 2014-06-19 三菱電機株式会社 Motor control device
TWI504132B (en) * 2012-12-13 2015-10-11 Mitsubishi Electric Corp Motor control device
JP5955414B2 (en) * 2012-12-13 2016-07-20 三菱電機株式会社 Motor control device
US9515581B2 (en) 2012-12-13 2016-12-06 Mitsubishi Electric Corporation Motor control device
JPWO2014091602A1 (en) * 2012-12-13 2017-01-05 三菱電機株式会社 Motor control device

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