GB1255934A - Improvements in control systems for direct current electric motors - Google Patents

Improvements in control systems for direct current electric motors

Info

Publication number
GB1255934A
GB1255934A GB3201468A GB3201468A GB1255934A GB 1255934 A GB1255934 A GB 1255934A GB 3201468 A GB3201468 A GB 3201468A GB 3201468 A GB3201468 A GB 3201468A GB 1255934 A GB1255934 A GB 1255934A
Authority
GB
United Kingdom
Prior art keywords
controllable rectifier
motor
operating coil
current
direct current
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.)
Expired
Application number
GB3201468A
Inventor
Frank Manners
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.)
Linde Material Handling UK Ltd
Original Assignee
Lansing Bagnall 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 Lansing Bagnall Ltd filed Critical Lansing Bagnall Ltd
Priority to GB3201468A priority Critical patent/GB1255934A/en
Publication of GB1255934A publication Critical patent/GB1255934A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H02H7/0833—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 for electric motors with control arrangements
    • H02H7/0844—Fail safe control, e.g. by comparing control signal and controlled current, isolating motor on commutation error
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P7/00—Arrangements for regulating or controlling the speed or torque of electric DC motors
    • H02P7/06—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current
    • H02P7/18—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power
    • H02P7/24—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices
    • H02P7/28—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices
    • H02P7/285—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices controlling armature supply only
    • H02P7/29—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices controlling armature supply only using pulse modulation

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Control Of Ac Motors In General (AREA)

Abstract

1,255,934. Control of D.C. motors. LANSING BAGNALL Ltd. 8 July, 1969 [1 July, 1968], No. 32014/68. Divided out of 1,255,933. Heading H2J. [Also in Division G3] The subject-matter of this Specification is identical with that described in Specification 1,255,933 but the claims are concerned with a control system for a D.C. motor, comprising a controllable rectifier which on receipt of a trigger signal is rendered conductive and permits current to flow to energize the motor, means for providing trigger signals for the controllable rectifier alternately with further signals for an extinguishing means for the conduction of the controllable rectifier, a contactor of which a pair of contacts are operative to allow energization of the motor when sufficient current flows through an operating coil, the operating coil being arranged to be energized in accord with the voltage across the controllable rectifier; and in which there are provided means responsive to the current through the operating coil to prevent the passage of a trigger signal to the controllable rectifier if the said current falls below a predetermined value.
GB3201468A 1968-07-01 1968-07-01 Improvements in control systems for direct current electric motors Expired GB1255934A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3201468A GB1255934A (en) 1968-07-01 1968-07-01 Improvements in control systems for direct current electric motors

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3201468A GB1255934A (en) 1968-07-01 1968-07-01 Improvements in control systems for direct current electric motors

Publications (1)

Publication Number Publication Date
GB1255934A true GB1255934A (en) 1971-12-01

Family

ID=10331754

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3201468A Expired GB1255934A (en) 1968-07-01 1968-07-01 Improvements in control systems for direct current electric motors

Country Status (1)

Country Link
GB (1) GB1255934A (en)

Similar Documents

Publication Publication Date Title
GB1108964A (en) Electrical power transfer system
GB1178132A (en) Electric Limiter Circuit
GB1083153A (en) Improved system for controlling a motor
GB1261325A (en) Field weakening circuit for a series field motor
GB1132797A (en) Load circuit control for generating system
GB1344614A (en) Improvements in or relating to control means for electric motors operated from batteries
GB1255934A (en) Improvements in control systems for direct current electric motors
GB1381777A (en) Control of electric motors for battery-operated vehicles
GB1125310A (en) Improved electric motor control system
GB1266659A (en)
GB1008135A (en) Improvements in circuits for protecting electrical loads from an adverse condition
GB1436861A (en) Circuit arrangement for monitoring the heating-up of a device to be protected through which current flows
GB1174641A (en) Improvements in Voltage Regulators
GB1177072A (en) Improvements relating to Electric Motor Control Systems
GB1293046A (en) A device to protect against the connection of a battery with the wrong polarity
GB1271768A (en) Alarm device
GB1264503A (en)
GB911494A (en) Switching follow-up positioning system
GB1060172A (en) Surge protection circuits for use with accumulator charging systems
GB1318405A (en) Switching system for a three-chennel flight control system
GB1110742A (en) Control systems for electric motors
GB594397A (en) Improvements in and relating to limit switch arrangements
GB523840A (en) Improvements in or relating to electric motor control systems
GB1178271A (en) Improvements in or relating to Apparatus for Room Temperature Control.
GB1031623A (en) Control apparatus for burner systems