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sharath4
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India - Member - Proud to be INDIAN Engineering Fields - Power Engineering - New Member

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Location: Bengaluru, India
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Rotor Losses

07/29/2011 2:08 AM

Hello everybody,

In a Brushless Permanent Magnet motor,

How to calculate the losses occur in rotor containing Permanent magnets?

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Anonymous Poster #1
#1

Re: Rotor losses

07/29/2011 3:50 AM

Mechanical losses (Due to bearings)

Windage losses (depends upon the geometry, RPM, a bit complicated though possible)
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PWSlack
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#2

Re: Rotor losses

07/29/2011 5:54 AM

(Volts multiplied by amps) - (shaft torque multiplied by angular velocity) = losses.

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bravo88
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#3

Re: Rotor losses

07/29/2011 6:00 AM

It is a piece of Permanent magnet ratating , there is no loss by the magnet.

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