- #1
ugenetic
- 50
- 3
Hi Forum, once again I seek your help
I have a very good understanding of rotating magnetic field due to stator, armature reaction, and the phasor diagram.
from energy point of view it is very clear that if Gov increases, while output voltage remains locked by the gird, Amp will increase
From phasor diagram, it is very clear power angle between Ea and Vout will increase, thus the Amp needs to be longer to prop Ea up.
and from torque's point of view, Amps increases in magnitude and its resulting Armature flux will have a reduced angle with respect to Field Flux (as in closer to 90 degrees than before), thus explaining the torque increase.
HOWEVER, all these explanations only explain the necessity of Amp's increase, it's like saying "due to conservation of energy, heat must be generated somewhere" I need an explanation like "due to impact and molecule interactions, heat was transferred."
I CAN NOT think of a reason Amp increases for the first place. When Gov increases, field flux does not change in magnitude nor the change rate, how is the torque of water translated into current increase?
thanks
I have a very good understanding of rotating magnetic field due to stator, armature reaction, and the phasor diagram.
from energy point of view it is very clear that if Gov increases, while output voltage remains locked by the gird, Amp will increase
From phasor diagram, it is very clear power angle between Ea and Vout will increase, thus the Amp needs to be longer to prop Ea up.
and from torque's point of view, Amps increases in magnitude and its resulting Armature flux will have a reduced angle with respect to Field Flux (as in closer to 90 degrees than before), thus explaining the torque increase.
HOWEVER, all these explanations only explain the necessity of Amp's increase, it's like saying "due to conservation of energy, heat must be generated somewhere" I need an explanation like "due to impact and molecule interactions, heat was transferred."
I CAN NOT think of a reason Amp increases for the first place. When Gov increases, field flux does not change in magnitude nor the change rate, how is the torque of water translated into current increase?
thanks