WO2014049338A3 - Motor safety control by analysing duty cycle and/or frequency of feedback signal - Google Patents

Motor safety control by analysing duty cycle and/or frequency of feedback signal Download PDF

Info

Publication number
WO2014049338A3
WO2014049338A3 PCT/GB2013/052482 GB2013052482W WO2014049338A3 WO 2014049338 A3 WO2014049338 A3 WO 2014049338A3 GB 2013052482 W GB2013052482 W GB 2013052482W WO 2014049338 A3 WO2014049338 A3 WO 2014049338A3
Authority
WO
WIPO (PCT)
Prior art keywords
duty cycle
analysing
frequency
feedback signal
electric motor
Prior art date
Application number
PCT/GB2013/052482
Other languages
French (fr)
Other versions
WO2014049338A2 (en
Inventor
Ken Thompson
Original Assignee
Sevcon Limited
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 Sevcon Limited filed Critical Sevcon Limited
Publication of WO2014049338A2 publication Critical patent/WO2014049338A2/en
Publication of WO2014049338A3 publication Critical patent/WO2014049338A3/en

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
    • B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
    • B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
    • B60L3/0046—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to electric energy storage systems, e.g. batteries or capacitors
    • 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
    • B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
    • B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
    • B60L3/0061—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to electrical machines
    • 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
    • B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
    • B60L3/02—Dead-man's devices
    • 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
    • B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
    • B60L3/04—Cutting off the power supply under fault conditions
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/08—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Electric Motors In General (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

Monitoring for malfunction of an electric motor of an electric vehicle is described. In response to malfunction, a motor controller may be shut-down to inhibit unsafe operation of the vehicle. One example provides an electric motor control apparatus configured to selectively enable or inhibit operation of an electric motor based on characteristics of a time varying signal, these characteristics may include the duty cycle, and/or the frequency content of the time varying signal. The apparatus may enable or inhibit operation of the electric motor based on the amplitude of the time varying signal in a selected frequency band.
PCT/GB2013/052482 2012-09-28 2013-09-23 Motor safety control WO2014049338A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB1217430.6A GB2506423B (en) 2012-09-28 2012-09-28 Motor safety control
GB1217430.6 2012-09-28

Publications (2)

Publication Number Publication Date
WO2014049338A2 WO2014049338A2 (en) 2014-04-03
WO2014049338A3 true WO2014049338A3 (en) 2014-07-31

Family

ID=47225406

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2013/052482 WO2014049338A2 (en) 2012-09-28 2013-09-23 Motor safety control

Country Status (2)

Country Link
GB (1) GB2506423B (en)
WO (1) WO2014049338A2 (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1564365A (en) * 1976-02-04 1980-04-10 Interelec Safety device for a railway vehicle travelling on a track divided into sequential operating sections
GB2189906A (en) * 1986-04-16 1987-11-04 Byrne & Davidson Doors Door controller
EP0498234A1 (en) * 1991-02-08 1992-08-12 W.u.H. Neukirchen GmbH & Co. KG Drive for a closure member with electronic control system
EP0505774A1 (en) * 1991-03-09 1992-09-30 PILZ GmbH & CO. Security switching device
DE10121693A1 (en) * 2001-05-04 2002-11-14 Bosch Gmbh Robert Method and device for detecting the contact of hands with the steering wheel
JP2008043069A (en) * 2006-08-07 2008-02-21 Toshiba Corp Electric vehicle control unit

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7034552B2 (en) * 2004-02-17 2006-04-25 Markus Kirchner Operator sensing circuit for disabling motor of power equipment

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1564365A (en) * 1976-02-04 1980-04-10 Interelec Safety device for a railway vehicle travelling on a track divided into sequential operating sections
GB2189906A (en) * 1986-04-16 1987-11-04 Byrne & Davidson Doors Door controller
EP0498234A1 (en) * 1991-02-08 1992-08-12 W.u.H. Neukirchen GmbH & Co. KG Drive for a closure member with electronic control system
EP0505774A1 (en) * 1991-03-09 1992-09-30 PILZ GmbH & CO. Security switching device
DE10121693A1 (en) * 2001-05-04 2002-11-14 Bosch Gmbh Robert Method and device for detecting the contact of hands with the steering wheel
JP2008043069A (en) * 2006-08-07 2008-02-21 Toshiba Corp Electric vehicle control unit

Also Published As

Publication number Publication date
GB2506423B (en) 2014-12-31
WO2014049338A2 (en) 2014-04-03
GB2506423A (en) 2014-04-02
GB201217430D0 (en) 2012-11-14

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