I have two questions about reactive power. 1) I have read that the flow of reactive power is proportional to the magnitude of voltage difference between nodes. Could someone explain me this? 2) At the merchant vessel that i am working, if i increase the field excitation ( the current of generator's rotor ) the power factor increases. Why this happens? Thank you.
The magnetic field in a synchronous machine is caused by the net effect of the field current and the armature current. Increasing the field current of a generator can either increase or reduce the power factor of the generator depending on whether the starting point is a leading power factor or a lagging power factor as shown below.