GB912990A - Synchronous induction motor speed control - Google Patents

Synchronous induction motor speed control

Info

Publication number
GB912990A
GB912990A GB17109/60A GB1710960A GB912990A GB 912990 A GB912990 A GB 912990A GB 17109/60 A GB17109/60 A GB 17109/60A GB 1710960 A GB1710960 A GB 1710960A GB 912990 A GB912990 A GB 912990A
Authority
GB
United Kingdom
Prior art keywords
inverter
motor
stator
rotor
rectifier
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
GB17109/60A
Inventor
Rex Mountford Davis
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.)
Brush Electrical Engineering Co Ltd
Original Assignee
Brush Electrical Engineering Co 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 Brush Electrical Engineering Co Ltd filed Critical Brush Electrical Engineering Co Ltd
Priority to GB17109/60A priority Critical patent/GB912990A/en
Publication of GB912990A publication Critical patent/GB912990A/en
Expired 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
    • B60L50/00—Electric propulsion with power supplied within the vehicle
    • B60L50/10—Electric propulsion with power supplied within the vehicle using propulsion power supplied by engine-driven generators, e.g. generators driven by combustion engines
    • B60L50/13—Electric propulsion with power supplied within the vehicle using propulsion power supplied by engine-driven generators, e.g. generators driven by combustion engines using AC generators and AC motors
    • 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
    • B60L2200/00—Type of vehicles
    • B60L2200/26—Rail vehicles
    • 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
    • B60L2220/00—Electrical machine types; Structures or applications thereof
    • B60L2220/10—Electrical machine types
    • B60L2220/12—Induction 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
    • B60L2220/00—Electrical machine types; Structures or applications thereof
    • B60L2220/10—Electrical machine types
    • B60L2220/14—Synchronous machines

Landscapes

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

Abstract

912,990. Control of A.C. motors. BRUSH ELECTRICAL ENGINEERING CO. Ltd. May 10, 1961 [May 14, 1960], No. 17109/60. Class 38 (3). At speeds below synchronous, a motor 9, e.g. in a locomotive, operates as an induction motor and has A.C. from a source 1, e.g. an enginedriven alternator, applied to its rotor 8 while its stator 7 is connected to a rectifier 6, followed by an inverter 4 by means of which slip energy is fed back to the source 1. In this condition the speed is controlled by adjustment of the firing angle of the inverter. For higher speeds, switches 3a and 3b change-over to connect the rotor to a D.C. supply 2 while the stator is supplied from the inverter, the rectifier 6 now being connected to the A.C. source 1. Due to the alternating e.m.f. induced in the stator by the rotor the inverter becomes selfcommutating so that the frequency of its output corresponds to the speed of the motor. The motor is thus now operating as a synchronous motor with the rectifier-inverter combination forming a frequency changer to step up the supply frequency to any desired value within the limitations of the motor and the inverter. The speed is now adjusted either by varying the D.C. supply to the inverter 4, giving a constant torque characteristic, or, for constant horse-power, by varying the D.C. excitation of the motor. The inverter can be a mercury arc or a solid state, controlled rectifier. The roles of the stator and rotor of the motor may be transposed.
GB17109/60A 1960-05-14 1960-05-14 Synchronous induction motor speed control Expired GB912990A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB17109/60A GB912990A (en) 1960-05-14 1960-05-14 Synchronous induction motor speed control

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB17109/60A GB912990A (en) 1960-05-14 1960-05-14 Synchronous induction motor speed control

Publications (1)

Publication Number Publication Date
GB912990A true GB912990A (en) 1962-12-12

Family

ID=10089410

Family Applications (1)

Application Number Title Priority Date Filing Date
GB17109/60A Expired GB912990A (en) 1960-05-14 1960-05-14 Synchronous induction motor speed control

Country Status (1)

Country Link
GB (1) GB912990A (en)

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