A REVIEW OF EXPERIMENTAL STUDY AND ANALYSIS OF SPEED CONTROL OF PERMANENT MAGNET AND WOUNDED TYPE DC MOTOR

The permanent magnet DC motors are used in various applications as heater, wiper and personal computer. A DC motor is any of a class of electrical machines that converts direct current electrical power into mechanical power. The most common types rely on the forces produced by magnetic fields. Nearly all types of DC motors have some internal mechanism, either electromechanical or electronic; to periodically change the direction of current flow in part of the motor. Most types produce rotary motion; a linear motor directly produces force and motion in a straight line.