In the attached image below, I don't understand the text and phasor diagram that I have highlighted in yellow.

enter image description here

Why does the induced emf on the armature winding lag the magnetic flux of the corresponding rotor pole by 90 degrees? I thought they would have been in phase.

Also how does the power factor affect this?


In first approximation, a synchronous generator is just a coil.

The behavior of a coil is that current and voltage have 90deg phase angle.

Flux is directly related to current I, because current I generates flux in the coil. So also flux and voltage always have 90deg phase shift.


Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.