Back EMF in Synchronous Motor Formulas

Back EMF is a voltage that is generated in a motor or generator due to the motion of the armature or rotor. It is called "back" EMF as its polarity opposes the voltage applied. And is denoted by E_b. Back EMF is usually measured using the Volt for Electric Potential. Note that the value of Back EMF is always negative.

Formulas to find Back EMF in Synchronous Motor

fxBack EMF of Synchronous Motor using Mechanical PowerGo

fxBack EMF of Synchronous Motor given Armature Winding ConstantGo

Synchronous Motor formulas that make use of Back EMF

fxVoltage Equation of Synchronous MotorGo

fxMechanical Power of Synchronous MotorGo

fxMechanical Power Developed by Synchronous MotorGo

fxArmature Winding Constant of Synchronous MotorGo

fxMagnetic Flux of Synchronous Motor given Back EMFGo

List of variables in Synchronous Motor formulas

fx Mechanical Power Go

fx Armature Current Go

fx Load Angle Go

fx Phase Difference Go

fx Armature Winding Constant Go

fx Magnetic Flux Go

fx Synchronous Speed Go

FAQ

What is the Back EMF?

Back EMF is a voltage that is generated in a motor or generator due to the motion of the armature or rotor. It is called "back" EMF as its polarity opposes the voltage applied. Back EMF is usually measured using the Volt for Electric Potential. Note that the value of Back EMF is always negative.

Can the Back EMF be negative?

Yes, the Back EMF, measured in Electric Potential can be negative.

What unit is used to measure Back EMF?

Back EMF is usually measured using the Volt[V] for Electric Potential. Millivolt[V], Microvolt[V], Nanovolt[V] are the few other units in which Back EMF can be measured.

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