FI891199A - ANORDNING FOER OEVERSPAENNINGSSKYDD AV EN LIKRIKTARBRYGGA SOM MATAR EN LIKSTROEMSMOTOR OCH FOER STYRNING AV LIKSTROEMSMOTORN VID NOEDBROMSNING. - Google Patents

ANORDNING FOER OEVERSPAENNINGSSKYDD AV EN LIKRIKTARBRYGGA SOM MATAR EN LIKSTROEMSMOTOR OCH FOER STYRNING AV LIKSTROEMSMOTORN VID NOEDBROMSNING. Download PDF

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Publication number
FI891199A
FI891199A FI891199A FI891199A FI891199A FI 891199 A FI891199 A FI 891199A FI 891199 A FI891199 A FI 891199A FI 891199 A FI891199 A FI 891199A FI 891199 A FI891199 A FI 891199A
Authority
FI
Finland
Prior art keywords
semiconductor
foer
voltage
oeverspaenningsskydd
noedbromsning
Prior art date
Application number
FI891199A
Other languages
Finnish (fi)
Other versions
FI85634C (en
FI85634B (en
FI891199A0 (en
Inventor
Heikki Tuusa
Original Assignee
Kone Oy
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 Kone Oy filed Critical Kone Oy
Priority to FI891199A priority Critical patent/FI85634C/en
Publication of FI891199A0 publication Critical patent/FI891199A0/en
Priority to IN519CA1989 priority patent/IN172421B/en
Priority to CN89106253A priority patent/CN1021681C/en
Priority to US07/460,786 priority patent/US5038244A/en
Publication of FI891199A publication Critical patent/FI891199A/en
Application granted granted Critical
Publication of FI85634B publication Critical patent/FI85634B/en
Publication of FI85634C publication Critical patent/FI85634C/en

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  • Stopping Of Electric Motors (AREA)
  • Control Of Direct Current Motors (AREA)

Abstract

This invention concerns a device for overvoltage protection of a rectifier bridge without null diodes, which bridge has been constructed with semiconductor couplers completely controllable from a lattice and which bridge supplies a DC motor, and for control of the DC motor in the event of emergency braking. For protecting at least the abovementioned semiconductor couplers in the rectifier bridge against overvoltage, which couplers can be completely controlled from a lattice, and for controlling the DC motor in the event of emergency braking by means of diodes D1-D10, the device comprises a capacitor C1 connected to both an AC circuit and a DC circuit and a semiconductor coupler T1 parallel to the connected series connection and completely controllable from a lattice, and a resistance R, which semiconductor coupler T1 is controlled by means of a control unit CO so that when the voltage between at least two connections 1-3, 7-10 in the AC and DC circuits exceeds the voltage in the capacitor C1, the semiconductor coupler T1 opens when the voltage between the abovementioned connections exceeds the start-up value and closes when the voltage is less than the closing value, and so that during emergency braking the semiconductor coupler T1 is made conductive. <IMAGE>
FI891199A 1989-03-14 1989-03-14 ANORDNING FOER OEVERSPAENNINGSSKYDD AV EN LIKRIKTARBRYGGA SOM MATAR EN LIKSTROEMSMOTOR OCH FOER STYRNING AV LIKSTROEMSMOTORN VID NOEDBROMSNING. FI85634C (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
FI891199A FI85634C (en) 1989-03-14 1989-03-14 ANORDNING FOER OEVERSPAENNINGSSKYDD AV EN LIKRIKTARBRYGGA SOM MATAR EN LIKSTROEMSMOTOR OCH FOER STYRNING AV LIKSTROEMSMOTORN VID NOEDBROMSNING.
IN519CA1989 IN172421B (en) 1989-03-14 1989-07-03
CN89106253A CN1021681C (en) 1989-03-14 1989-07-28 Device for overvoltage protection of rectifier bridge feeding dc motor and for control of dc motor
US07/460,786 US5038244A (en) 1989-03-14 1990-01-04 Device for overvoltage protection of a rectifier bridge feeding a d.c. motor and for control of the d.c. motor during emergency braking

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI891199A FI85634C (en) 1989-03-14 1989-03-14 ANORDNING FOER OEVERSPAENNINGSSKYDD AV EN LIKRIKTARBRYGGA SOM MATAR EN LIKSTROEMSMOTOR OCH FOER STYRNING AV LIKSTROEMSMOTORN VID NOEDBROMSNING.
FI891199 1989-03-14

Publications (4)

Publication Number Publication Date
FI891199A0 FI891199A0 (en) 1989-03-14
FI891199A true FI891199A (en) 1990-09-15
FI85634B FI85634B (en) 1992-01-31
FI85634C FI85634C (en) 1992-05-11

Family

ID=8528049

Family Applications (1)

Application Number Title Priority Date Filing Date
FI891199A FI85634C (en) 1989-03-14 1989-03-14 ANORDNING FOER OEVERSPAENNINGSSKYDD AV EN LIKRIKTARBRYGGA SOM MATAR EN LIKSTROEMSMOTOR OCH FOER STYRNING AV LIKSTROEMSMOTORN VID NOEDBROMSNING.

Country Status (1)

Country Link
FI (1) FI85634C (en)

Also Published As

Publication number Publication date
FI85634C (en) 1992-05-11
FI85634B (en) 1992-01-31
FI891199A0 (en) 1989-03-14

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Owner name: KONE OY