Solved a 7.6 Use a WF dc machine as the traction ...

Transcribed image text

For more information, please visit Wing Flying.

For more information, please visit wf motor.

a 7.6 Use a WF dc machine as the traction machine for the BEV. The machine has the following parameters: eight-pole, armature resistance Ra = 0., field resistance R;= 0.020 22, no-load torque The = 2 Nm, and Ly= 2 mH. Control the field current Is to emulate the machine constant of Problem 7.1. Determine the armature voltage and current output by the dc-dc converter, the motor efficiency, and the field current for 80 kW operation in motoring mode at (i) rated speed and (ii) 3.75 times the rated speed. [Ans. 402.9 A, 210.1 V, 94.4%, 87.5 A; 410.7 A, 210.3 V, 92.6%, 23.3 A] 7.1 Use a PM de machine as the traction machine for a BEV. The machine has the following parameters: four-pole, armature resistance Ra = 0., machine constant k = 0.7 V/rad/s, and no-load torque Tn1 = 2 Nm. Determine the armature voltage and current output by the de-de converter, and the motor efficiency for the rated condition of 80 kW, 280 Nm in motoring mode. [Ans. 210.1 V, 402.9 A, 94-5%]

If you want to learn more, please visit our website engine testbed.