Question

A foreign excitation motor is powered by a downcomer recuperative with a firing angle of 30 degrees, which is powered by a 400V and 50Hz network and by a voltage downshift cutter. The drum resistance is 0.4Ω, the resistor 120Ω and the motor voltage constant 1.827V/A-rad/sec. Average drum current is 200A and excitation voltage 300V. The drum current is uninterrupted and without ripple. If the limiters (clippers) operating cycle is 65% calculate:
1) the power absorbed by the source
2) engine speed
3) the developing torque

Answer 1

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