Different formula for generator and motor ?

  • Thread starter omgange
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  • #1
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Is there a different formula for generator and motor effects? What are they?
 

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  • #2
sophiecentaur
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Couldn't you find the formulae on Wikipedia?
They are, essentially, the same formula - or at least the same relationship. The main difference is the sign. RH generator rule - (generighter) and LH motor rule (motors drive on the left, in the UK).
 
  • #3
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I wonder if omgange is doing electrical engineering?

In EE the terms refer to polarity conventions.

If the current and voltage rise in the same direction across circuit element E, as on the left in the attached sketch, the circuit is said to be using the generator convention.
A positive VI product means that the element is sourcing or producing power and is thus acting as a generator.

If we adopt the motor convention then the current is assumed in the opposite direction to the voltage.
A positive VI product here means the element is consuming power.
 

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