Repulsion start induction motor. Alternating current series motor without careful examination it may appear that the typical dc series or shunt motor can be operated from an ac supply. Repulsion induction motor in the field of repulsion motor this type is becoming very popular because of its good all round characteristics which are comparable to those of a compound dc. The stator carries a single phase exciting winding similar to the main winding of single phase induction motor. The rotor has distributed dc winding connected to the commutator at one end just like in dc motor.
Construction of repulsion motor. This is a class of motor that overcomes the induction motors low starting torque and incorporates the large starting torque while loosing the noise and brush wear of a repulsion motor. Also know about their practical applications. A large cast iron 12 jaw wood planer powered by a repulsion start induction run motor.
They started as repulsion motors but once they were running at a sizable fraction of full speed the brushes were lifted mechanically and all commutator bars were short circuited together to create the equivalent of a squirrel cage induction motor. The main components of repulsion motor are stator rotor and commutator brush assembly. This is a repulsion start induction run motor. Know about the various types of repulsion motors the disadvantages of conventional repulsion motors and how these shortcomings are minimized by various types of design which includes compensated repulsion motor repulsion start induction run motors and repulsion induction motor.
The repulsion start induction run motor has the advantages of high starting torque and good speed regulation. It starts as a repulsion motor and runs as an induction motor where the starting torque should be high for repulsion motor and very good running characteristics for induction motor. Repulsion motor top trends. Edmonton power historical foundation presents the emerson 1901 one half horsepower single phase ac induction motor.
Emerson repulsion start induction run ac motor duration. The repulsion induction motor the repulsion motor and the repulsion start induction run motor all have the same schematic diagram symbol. I rescue a vintage mccoll repulsion start electric motor duration. Repulsion start induction run motor the repulsion induction motor starts on one principle of operation and when almost up to speed changes over to another type of operation.
Very high twisting forces are produced during starting by the repulsion between the magnetic pole in the armature and the same kind of pole in the adjacent stator field winding. The main application of repulsion motor is electric trains.