JPS55127801A - Controlling system for electric car - Google Patents

Controlling system for electric car

Info

Publication number
JPS55127801A
JPS55127801A JP3328179A JP3328179A JPS55127801A JP S55127801 A JPS55127801 A JP S55127801A JP 3328179 A JP3328179 A JP 3328179A JP 3328179 A JP3328179 A JP 3328179A JP S55127801 A JPS55127801 A JP S55127801A
Authority
JP
Japan
Prior art keywords
current
chopper
relay
circuit
power
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
JP3328179A
Other languages
Japanese (ja)
Inventor
Hiroshi Narita
Masahiko Ibamoto
Shigetoshi Okamatsu
Eiji Takatsu
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP3328179A priority Critical patent/JPS55127801A/en
Publication of JPS55127801A publication Critical patent/JPS55127801A/en
Pending legal-status Critical Current

Links

Landscapes

  • Motor And Converter Starters (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

PURPOSE: To make fine inching running possible even for an electric car having a filter circuit in a power supply by expenditing the current-decreasing speed in proportion to the decreasing input current to the filter circuit.
CONSTITUTION: Power is supplied to a driving motor A through a filter Fil, and the motor is controlled by a current control system ACR such as a chopper and the like. When a power-supply current IS is small and an output voltage VIS from a current detector (DCCT)s does not reach the Zener voltage of a constant-voltage diode ZD, a transistor Tr1 is not conducted, a relay Ry1 is not operated, and an integrating circuit TI is not connected to a relay Ry which turns the gate of a chopper CH off. Therefore, when a switch S is switched from a contact 1 to a contact 2 by a circuit-breaking signal, a transistor Tr is turned off, the relay Ry is turned off, the gate to the chopper CH is stopped, and a motor current IM becomes zero. In this constitution, an operator can make a fine inching running.
COPYRIGHT: (C)1980,JPO&Japio
JP3328179A 1979-03-23 1979-03-23 Controlling system for electric car Pending JPS55127801A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3328179A JPS55127801A (en) 1979-03-23 1979-03-23 Controlling system for electric car

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3328179A JPS55127801A (en) 1979-03-23 1979-03-23 Controlling system for electric car

Publications (1)

Publication Number Publication Date
JPS55127801A true JPS55127801A (en) 1980-10-03

Family

ID=12382138

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3328179A Pending JPS55127801A (en) 1979-03-23 1979-03-23 Controlling system for electric car

Country Status (1)

Country Link
JP (1) JPS55127801A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1299927C (en) * 2003-12-29 2007-02-14 泛亚汽车技术中心有限公司 High-voltage DC insulating monitoring circuit for electric automobile

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1299927C (en) * 2003-12-29 2007-02-14 泛亚汽车技术中心有限公司 High-voltage DC insulating monitoring circuit for electric automobile

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