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Unformatted text preview: Introduction DC motors do not run at constant speeds because the Emf due to the field inside them is not constant. The flow of current is in the opposite direction as compared to the synchronous motors. DC motors operate very differently depending on the type of connection configuration. If connected in series with a series field, a reversed series field, or with just a shunt connection the motor will produce different results under load. This experiment measures those results under different controlled parameters. . The AC machine was coupled to the DC machine as a generator with the FPS to control the field current and the stator windings were connected to the resistive load box to vary the armature current. Purpose The main purpose of this experiment was to obtain the current and power curves of a DC motor under varying load and connection configurations. These curves help us understand the relationship between the speed and armature current of a DC motor under load and with different...
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This note was uploaded on 12/07/2011 for the course ECE 447 taught by Professor Staff during the Fall '08 term at Ohio State.
- Fall '08