In fact, however, the N-pole side and the S-pole side are excited through the same field winding, which means that this model shows MMF that is only half the actual value.
事实上,N极边和s极边由相同的励磁绕组励磁,这意味着模型中的磁动势只是实际磁动势的一半。
2
The output power mechanism of a separately excited DC motor can be equivalent to a variable resistance, which is parallel with the armature winding of the motor.