DC Machines 300W
In spite of their declining use for industrial purposes DC machines constitute the basis for learning about electrical machines. They demonstrate in a straight-forward manner the various possibilities of open- and closed-loop control of machines.
The following training objectives are dealt with for shunt-wound, series-wound and compound-wound machines:
Motor operation:
Motor connection
Comparison of shunt-wound, series-wound and compound-wound machines
Typical machine data
Open-loop speed control with starter and field regulator
Reversing the rotation direction
Load characteristics at constant input voltage
Measurement evaluations
Generator operation:
Generator connection
Armature voltage as a function of the exciter current
Function and application of the field regulator
Voltage control, self-excitation and separate excitation
Armature current and armature voltage at constant speed and constant exciter current
Load diagram of the generator
