You will prepare and submit a term paper on Speed Control of DC and AC Machines. Your paper should be a minimum of 2750 words in length. Rectifiers remove the need of having feedback for the purpose of obtaining speed control via changing the voltages fed to the armature winding of the motor.
To be able to achieve separate motor excitation of the DC motor, making use of the steady-state conditions is a necessity. The experimental setup will require subjecting the motor to varying loads and voltages via the rectifier. Single-phase rectifiers that are half-controlled are available. They have a flywheel diode to make power conversion a near-perfect process. To achieve experimental results without complex analysis criteria, using a fixed value for the firing angle is recommended.
Armature winding drives the motor and as a result of varying resistance and voltage properties of the armature will enhance the realization of motor speed control. Flux properties of the armature winding make up the magnetic properties that hold the motor operation together. With regard to this, the method for controlling the speed of the motor is through the controlling of field and armature properties variations.
By connecting an additional resistance externally through parallel or series criterion, armature properties are varied hence control of speed. Realization is through connecting it to the motor armature voltage supply circuitry. Using a series of rheostat arrangement enables the achievement of speed controls. The external resistance connected in his case affects the armature winding.
The method of the field diverter is imperative for achieving variation of the motor magnetic properties. Controlling motor speed via armature control has superior qualities in comparison to the other available means. The strategy offers capabilities of speed control in a fine mode of operation. The features are uniformity of speed acceleration, sophisticated regulation channels, and enhanced speed control. .