In a multipolar electrical machine (motor or generator), relationship between the mechanical angle and electrical angle is given by:
Electrical angle = (P/2) x Mechanical angle
where: P = Number of poles
So:
- In a two-pole motor (P = 2): Electrical Angle = Mechanical Angle
- In a four-pole motor (P = 4): Electrical Angle = 2 times Mechanical Angle
- In a six-pole motor (P = 6): Electrical Angle = 3 times Mechanical Angle
etc.
Yes, it is the number of pole pair of the motor.
In the case of asynchronous machine, you must also take the slip in consideration.
Luc-A
For asynchronous machines, the electrical angle (thetaE) is related to the mechanical angle (thetaM) in terms of the number of poles (N) as follows:
thetaE = (N/2) * thetaM
In a multipolar electrical machine (motor or generator), relationship between the mechanical angle and electrical angle is given by:
Electrical angle = (P/2) x Mechanical angle
where: P = Number of poles
So:
- In a two-pole motor (P = 2): Electrical Angle = Mechanical Angle
- In a four-pole motor (P = 4): Electrical Angle = 2 times Mechanical Angle
- In a six-pole motor (P = 6): Electrical Angle = 3 times Mechanical Angle
etc.
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