In: Electrical Engineering
assuming n=m=1
A 230+m V, series DC motor has a field winding of 35+m turns per pole, Its armature resistance is 0.09+.01*m ohm and field resistance is 0.06+0.01*m ohm. The magnetization curve expressed in terms of magneto motive force verses EA at 850+n rpm is given below by the following table. Rated current is 70+m A. Rotational loss is 50+m Watt. Find Motor’s torque, Speed and output power at 90% of full load armature current.
EA
V
|
95
|
150
|
188
|
212
|
229
|
243
|
ℒ, A.
turn
|
500
|
1000
|
1500
|
2000
|
2500
|
3000
|