Electric motor theory

sendler2112

Member
Jan 2, 2021
36
22
Syracuse, NY USA
Motors naturally have a range of operating rpm depending on the number of turns in the winding. The designer has to choose trade offs between low and high rpm ranges and move the power band to suit. Back EMF eventually impedes the output of all electric motors to zero at some rpm depending on the design choices of power band.
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"The term back electromotive force is also commonly used to refer to the voltage that occurs in electric motors where there is relative motion between the armature and the magnetic field produced by the motor's field coils or permanent magnet field, thus also acting as a generator while running as a motor. "
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motor power curve.jpg

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