JPS5563501A - Slip detecting device for electric car - Google Patents
Slip detecting device for electric carInfo
- Publication number
- JPS5563501A JPS5563501A JP13581378A JP13581378A JPS5563501A JP S5563501 A JPS5563501 A JP S5563501A JP 13581378 A JP13581378 A JP 13581378A JP 13581378 A JP13581378 A JP 13581378A JP S5563501 A JPS5563501 A JP S5563501A
- Authority
- JP
- Japan
- Prior art keywords
- current
- group
- motors
- slip
- resistors
- 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
Landscapes
- Control Of Multiple Motors (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
PURPOSE: To detect slips, in the case of concurrence of slips on motors in the same group of an electric car in which plural electric motors are controlled by being divided into plural groups, by utilizing change of current occurring at the time of switching from series connection to parallel connection.
CONSTITUTION: An occurrence of slip in an electric car driving coaches by first group 8 consisting of electric motors M1 and M2 and second group 9 consisting of electric motors M3 and M4, is detected at a slip detecting circuit by a current transformers 30 and 31, resistors 32 through 34 and a relay-exciting coil 35. In case if equal currents flow through armature circuits of the two groups, as voltages occurring in the resistors 32 and 33 are equal, no current flows through the resistor 34, and therefore, no current flows through the relay-exciting coil 35. If there was any difference of current between armature circuits of the first and the second group, slips are supposed to have occurred on motors in one of these 2 groups, a difference of current is caused between the resistors 32 and 33, current passes through the resistor 34 and the relay- exciting coil 35, and therefore, the occurrence of slip is detected.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13581378A JPS5563501A (en) | 1978-11-06 | 1978-11-06 | Slip detecting device for electric car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13581378A JPS5563501A (en) | 1978-11-06 | 1978-11-06 | Slip detecting device for electric car |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5563501A true JPS5563501A (en) | 1980-05-13 |
Family
ID=15160406
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13581378A Pending JPS5563501A (en) | 1978-11-06 | 1978-11-06 | Slip detecting device for electric car |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5563501A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020174621A1 (en) * | 2019-02-27 | 2020-09-03 | 三菱電機株式会社 | Motor drive device and air conditioner |
-
1978
- 1978-11-06 JP JP13581378A patent/JPS5563501A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020174621A1 (en) * | 2019-02-27 | 2020-09-03 | 三菱電機株式会社 | Motor drive device and air conditioner |
| WO2020175637A1 (en) * | 2019-02-27 | 2020-09-03 | 三菱電機株式会社 | Motor drive device, and air conditioner |
| JPWO2020175637A1 (en) * | 2019-02-27 | 2021-09-30 | 三菱電機株式会社 | Motor drive and air conditioner |
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