JPS5549903A - Method of controlling separately-excited dynamic braking of electric vehicle - Google Patents
Method of controlling separately-excited dynamic braking of electric vehicleInfo
- Publication number
- JPS5549903A JPS5549903A JP12221878A JP12221878A JPS5549903A JP S5549903 A JPS5549903 A JP S5549903A JP 12221878 A JP12221878 A JP 12221878A JP 12221878 A JP12221878 A JP 12221878A JP S5549903 A JPS5549903 A JP S5549903A
- Authority
- JP
- Japan
- Prior art keywords
- braking force
- cam shaft
- output
- controller
- field current
- 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
Links
Abstract
PURPOSE: To prevent the current of an armature from rising above a necessary level and prevent a braking force from greatly fluctuating, by controlling a field current in accordance with an instructed braking force pattern instructed from a motorman's seat.
CONSTITUTION: When initial braking is performed, the output of an instruction pattern circuit 11 for instructing a prescribed braking force is reduced at a predetermined ratio by a braking force pattern change circuit 12 depending on a signal from a cam shaft controller 10. A braking force comparison amplifier 13 compares the outputs of a dynamic braking force detector 8 and the instruction pattern circuit 11 with each other to control the output of a separate excitation controller 5 to the prescribed level. When a field current IF reaches an upper limit level dependent upon the capacity of a field coil 3 and the capability of the separate excitation controller 5, a maximum field current detector 9 generates an output so that the cam shaft controller 10 short-circuits a resistance section of a main resistor 2 and advances a cam shaft to the second step.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12221878A JPS5549903A (en) | 1978-10-03 | 1978-10-03 | Method of controlling separately-excited dynamic braking of electric vehicle |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12221878A JPS5549903A (en) | 1978-10-03 | 1978-10-03 | Method of controlling separately-excited dynamic braking of electric vehicle |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5549903A true JPS5549903A (en) | 1980-04-11 |
Family
ID=14830465
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12221878A Pending JPS5549903A (en) | 1978-10-03 | 1978-10-03 | Method of controlling separately-excited dynamic braking of electric vehicle |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5549903A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56158602U (en) * | 1980-04-24 | 1981-11-26 | ||
US9614466B2 (en) | 2014-05-20 | 2017-04-04 | Black & Decker Inc. | Electronic braking for a universal motor in a power tool |
US11047528B2 (en) | 2016-02-12 | 2021-06-29 | Black & Decker Inc. | Electronic braking for a power tool having a brushless motor |
-
1978
- 1978-10-03 JP JP12221878A patent/JPS5549903A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56158602U (en) * | 1980-04-24 | 1981-11-26 | ||
US9614466B2 (en) | 2014-05-20 | 2017-04-04 | Black & Decker Inc. | Electronic braking for a universal motor in a power tool |
US11047528B2 (en) | 2016-02-12 | 2021-06-29 | Black & Decker Inc. | Electronic braking for a power tool having a brushless motor |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS5534854A (en) | Controlling method of secondary winding-exciting motor | |
US4016496A (en) | Method and apparatus for producing ramp signals with rounded inflection points | |
CA2065868A1 (en) | Locomotive dynamic brake control | |
JPS5465322A (en) | Motor speed control system | |
JPS5549903A (en) | Method of controlling separately-excited dynamic braking of electric vehicle | |
CA1163316A (en) | Three phase power factor controller | |
JPS5537873A (en) | Controller for dc motor | |
US4235309A (en) | Control for starting electric motors | |
KR850005819A (en) | Elevator speed controller | |
JPS552371A (en) | Control device for electric car | |
US4345190A (en) | Chopper control system | |
JPS5610004A (en) | Controlling method of ac electric car | |
JPS5549902A (en) | Method of controlling separately-excited dynamic braking of electric vehicle | |
JPS55166407A (en) | Control unit for electric motor vehicle | |
JPS5513610A (en) | Controller for current-type inverter | |
US4357996A (en) | Speed control device for an elevator | |
SU770873A1 (en) | Apparatus for pulse-type controlling of direct current voltage of traction electric motor | |
JPS5316206A (en) | System for controlling electric motor vehicle | |
JPS56124520A (en) | Feeding circuit for trolley wire | |
JPS5653503A (en) | Electric car control system | |
JPS5775501A (en) | Controlling method for motor generator of vehicle | |
JPS56107706A (en) | Control unit for electric vehicle | |
JPS57145502A (en) | Regenerative brake controlling device of electric motor vehicle | |
JPS5495314A (en) | Electric train controller | |
JPS5456125A (en) | Dynamic braking control system for electric motor vehicle |