Author Topic: Difference in commutation of brushless motor against pole numbers  (Read 381 times)

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Offline sean87

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Hi all,

I have a BLDC motor with HALL sensors. Datasheet reads the motor is 4 pole. Somewhere else it says "Number of pole pairs 2"...I assume they both mean the same thing???
It also has 3 HALL sensors at 120°

I have some code samples that are for a 6 pole motor. My question is, what would be fundamentally different in commutation of a BLDC motor in respect to the number of poles.
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Offline Brumby

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Re: Difference in commutation of brushless motor against pole numbers
« Reply #1 on: October 31, 2017, 10:34:21 pm »
Datasheet reads the motor is 4 pole. Somewhere else it says "Number of pole pairs 2"...I assume they both mean the same thing???
The pole count is a simple counting exercise.
Poles tend to work in pairs groups.  A group of 2 is common.

So  4 = 2 x 2  looks right to me.
« Last Edit: October 31, 2017, 10:40:05 pm by Brumby »
 


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