JPS57202803A - Controller for electric motor vehicle - Google Patents

Controller for electric motor vehicle

Info

Publication number
JPS57202803A
JPS57202803A JP56085780A JP8578081A JPS57202803A JP S57202803 A JPS57202803 A JP S57202803A JP 56085780 A JP56085780 A JP 56085780A JP 8578081 A JP8578081 A JP 8578081A JP S57202803 A JPS57202803 A JP S57202803A
Authority
JP
Japan
Prior art keywords
flow rate
current flow
frequency
circuit
signal
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.)
Granted
Application number
JP56085780A
Other languages
Japanese (ja)
Other versions
JPH0334281B2 (en
Inventor
Kazuyoshi Kotake
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 JP56085780A priority Critical patent/JPS57202803A/en
Publication of JPS57202803A publication Critical patent/JPS57202803A/en
Publication of JPH0334281B2 publication Critical patent/JPH0334281B2/ja
Granted legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L15/00—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles
    • B60L15/02—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles characterised by the form of the current used in the control circuit
    • B60L15/08—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles characterised by the form of the current used in the control circuit using pulses
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/64—Electric machine technologies in electromobility
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/72—Electric energy management in electromobility

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Dc-Dc Converters (AREA)

Abstract

PURPOSE:To reduce the variation in the traction force of an electric motor vehicle at the time of switching a frequency by temporarily reducing a chopper current flow rate at the time of switching the chopper frequency when a chopper current flow rate or counterelectromotive force of a main motor or a vehicle speed reaches a set value. CONSTITUTION:A current flow rate detector 11 detects a current flow rate alpha or a current flow rate command, then detects that the currnt flow rate of a starting frequency f1 becomes double of the minimum current flow rate and produces a signal of logic level ''1''. When an AND circuit receives the output signal of the detector 11, a power drive command S1 and a gate start command S2, a frequency switching circuit 13 switches the frequency of a control system from f1 to f2. Simultaneously, a one shot circuit 14 produces a one shot signal with the output signal from the AND circuit 12. A minimum current flow rate instructing circuit 15 operates during the one shot signal and sets the minimum current flow rate state of the frequency f2.
JP56085780A 1981-06-05 1981-06-05 Controller for electric motor vehicle Granted JPS57202803A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56085780A JPS57202803A (en) 1981-06-05 1981-06-05 Controller for electric motor vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56085780A JPS57202803A (en) 1981-06-05 1981-06-05 Controller for electric motor vehicle

Publications (2)

Publication Number Publication Date
JPS57202803A true JPS57202803A (en) 1982-12-11
JPH0334281B2 JPH0334281B2 (en) 1991-05-22

Family

ID=13868392

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56085780A Granted JPS57202803A (en) 1981-06-05 1981-06-05 Controller for electric motor vehicle

Country Status (1)

Country Link
JP (1) JPS57202803A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5422606A (en) * 1977-07-19 1979-02-20 Mitsubishi Electric Corp Control system of chopper of electric rolling stock
JPS5574377A (en) * 1978-11-29 1980-06-04 Hitachi Ltd Modulator for pulse width modulation inverter

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5422606A (en) * 1977-07-19 1979-02-20 Mitsubishi Electric Corp Control system of chopper of electric rolling stock
JPS5574377A (en) * 1978-11-29 1980-06-04 Hitachi Ltd Modulator for pulse width modulation inverter

Also Published As

Publication number Publication date
JPH0334281B2 (en) 1991-05-22

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