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synchronous motors - Can i have this in English please

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Simon:
I am also confused at to where E has come from. I was initially told that there was no back e.m.f as there was no relative motion between the stator field and the rotor.

ahbushnell:

--- Quote from: Simon on December 30, 2018, 09:13:18 am ---I was not aware I was making a joke.

--- End quote ---
I was making a joke that was poor. 

BigMark:

--- Quote from: Simon on December 30, 2018, 02:01:39 pm ---I am also confused at to where E has come from. I was initially told that there was no back e.m.f as there was no relative motion between the stator field and the rotor.

--- End quote ---


E is the vector angle on the Figure 1 diagram. All the vectors are using capital letters.

Simon:
Yea I am not totally blind. E is "back e.m.f.". They say this having stated that synchronous motors do not have back e.m.f. I have now read alternative material and it has been made clearer that as the load angle increases because of the mechanical resistance from the load the shaft shifts from fully locked in and once the fields are not perfectly aligned back e.m.f. will be induced.

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