Tag: DC motors
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Key Facts about Thyristor DC Motor Drives Operation
For motors up to a few kilowatts the armature converter draws power from either a single phase or 3-phase utility supply. For large motors, 3-phase power supply is preferred because the waveforms are much smoother although traction uses single-phase with a series inductor to smooth the current. A separate thyristor or diode rectifier is used…
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Back emf and Torque Equations of a DC motor
The effect of the force in a magnetic field may be used to cause the rotation of a motor armature. A single loop of a conductor shown in the diagram above has its ends connected to a simple commutator; which comprises two copper segments insulated from each other. The commutator and loop are fixed to…