JPS5556402A - Electric motor vehicle - Google Patents
Electric motor vehicleInfo
- Publication number
- JPS5556402A JPS5556402A JP12850078A JP12850078A JPS5556402A JP S5556402 A JPS5556402 A JP S5556402A JP 12850078 A JP12850078 A JP 12850078A JP 12850078 A JP12850078 A JP 12850078A JP S5556402 A JPS5556402 A JP S5556402A
- Authority
- JP
- Japan
- Prior art keywords
- frequency
- triangular wave
- voltage
- electric motor
- motor vehicle
- 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
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
PURPOSE: To reduce the torque variation of an electric motor vehicle due to conversion of triangular wave in frequency by providing a period for providing six times frequency while converting the frequency of the triangular wave from 9 times of sine wave to 3 times.
CONSTITUTION: An induction motor 5 for driving an electric motor vehicle is energized through a pantograph 2 and an inverter 3 by a variable frequency and voltage power supply. The frequency f1 of a pulse generated by a pulse generator 6 directly coupled to the motor 5 is converted by a frequency-to-analog converter 7 to analog voltage V1, and a voltage ΔV corresponding to n times of predetermined slip frequency is added to the analog voltage V1 by an adder 8. Then, the sum from the adder 8 is applied to a voltage oscillator 9 to generate a frequency f2. The frequency f2 is divided by 1/n by a frequency divider 10 to three phases, and sine generator 11 is connected to thereby produce three phase sine wave of f2/n. Triangular wave generators 20-1W 20-5 generate 1W15 times of the sine wave to a triangular wave switching circuit 27, which switch the frequency of the triangular wave as reaquired.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12850078A JPS5556402A (en) | 1978-10-20 | 1978-10-20 | Electric motor vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12850078A JPS5556402A (en) | 1978-10-20 | 1978-10-20 | Electric motor vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5556402A true JPS5556402A (en) | 1980-04-25 |
Family
ID=14986270
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12850078A Pending JPS5556402A (en) | 1978-10-20 | 1978-10-20 | Electric motor vehicle |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5556402A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57145503A (en) * | 1981-03-04 | 1982-09-08 | Hitachi Ltd | Controlling device of induction motor driven electric motor vehicle |
| JPS5839201A (en) * | 1981-08-31 | 1983-03-07 | Toyo Electric Mfg Co Ltd | Control device for electric vehicle |
| CN110707977A (en) * | 2018-07-09 | 2020-01-17 | 中车株洲电力机车研究所有限公司 | Suppression method and system for voltage oscillation on direct current side |
-
1978
- 1978-10-20 JP JP12850078A patent/JPS5556402A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57145503A (en) * | 1981-03-04 | 1982-09-08 | Hitachi Ltd | Controlling device of induction motor driven electric motor vehicle |
| JPH0313802B2 (en) * | 1981-03-04 | 1991-02-25 | Hitachi Ltd | |
| JPS5839201A (en) * | 1981-08-31 | 1983-03-07 | Toyo Electric Mfg Co Ltd | Control device for electric vehicle |
| JPH0520963B2 (en) * | 1981-08-31 | 1993-03-23 | Toyo Electric Mfg Co Ltd | |
| CN110707977A (en) * | 2018-07-09 | 2020-01-17 | 中车株洲电力机车研究所有限公司 | Suppression method and system for voltage oscillation on direct current side |
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