Air Gap Power - Torque and Output Power Assignment Help

Assignment Help: >> Induction Motors - Air Gap Power - Torque and Output Power

Air Gap Power, Torque and Output Power:

As illustrated in Figure, the power crossing the terminals 1-2 is the electrical power input per phase minus the stator copper loss and iron loss. It is the power transferred from the stator to the rotor via the air gap magnetic field. The PG is the three-phase value and known as air gap power.

It is apparent from the equivalent circuit that

                 169_Air Gap Power - Torque and Output Power.png

Power across air gap = Rotor copper loss /Slip

2346_Equivalent Circuit of Induction Motor.jpg

Figure: Equivalent Circuit of Induction Motor

Therefore mechanical power output (Gross)

284_Air Gap Power - Torque and Output Power1.png

Rotor speed is

ωr  = (1 - S ) ωs  rad (mech)/sec

Then the electromagnetic torque developed is given by

(1 - S ) ωs Te  = Pm  = (1 - S ) PG


                     627_Air Gap Power - Torque and Output Power2.png

The net mechanical power output and torque are attain by subtracting losses-windage, friction and stray load loss.

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd