02-10-2010, 10:31 AM
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Modeling of Armature Controlled D.C Motor
INTRODUCTION
What is DC Motor?A direct current (DC) motor is a fairly simple electric motor that uses electricity and a magnetic field to produce torque, which turns the motor.
A dc motor is used to convert electrical energy into mechanical energy for driving loads.
PRINCIPLE OF OPERATION
The operation of a dc motor is based on electromagnetism.
A current -carrying conductor generates a magnetic field; when this is then placed in an external magnetic field, it will experience a force proportional to the current in the conductor, and to the strength of the external magnetic field.
METHODS OF SPEED CONTROL OF DC MOTOR
N=K V-IaRa\ r.p.s Flux\ Pole
Flux control method.
Rheostatic Control method.
Voltage control method.
