Performance equations of three phase induction motor , Electrical Engineering

Assignment Help:

Performance Equations of Three Phase Induction Motor

When balanced 3-? voltages are applied to the  stator  winding  a rotating magnetic field  of constant amplitude is produced in the air gap. The speed of this rotating  field is given by .

The rotating flux  wave  cuts  the stationary rotor  conductors and  therefore  emf are induced  in the rotor  conductors. As  the  rotor  circuit is short  circuited these  induced emfs  give rise  to current  in the rotor  conductors. The interaction of these  rotor  currents  with  rotating  flux  wave produces torque in the rotor of a  3-? induction motor  and as a consequence rotor  begins to rotate. According  to len law the develop torque must oppose the cause by which  it is produce i flux  cutting  action. This is possible  only  if  the developed  torque forces the rotor  to  rotate  in the direction of rotating field. Due  to this  the relative speed  between rotating flux  and rotor  conductors  is reduced and therefore  the flux  cutting action also gets reduced. This  relative speed between  rotating flux  wave and rotor.


Related Discussions:- Performance equations of three phase induction motor

Time constant at decay of current, Time constant at decay of current In...

Time constant at decay of current In decay of current by an inductor, a method to find values of time constant similar as in rise of current through an inductor. The difference

What are operations performed on data in 8085, What are operations performe...

What are operations performed on data in 8085 The various operations performed are Store 8-bit data Perform arithmetic and logical operations Test for conditio

Explain graphics adapters, Explain graphics adapters. Video card conve...

Explain graphics adapters. Video card converts digital output by the computer in an analog video signal and sends the signal by a cable to the monitor also termed as a graphic

In-depth technical competence, Professional engineers engage with a wide ra...

Professional engineers engage with a wide range of technically advanced and complex problem. So technical know-how is necessary to solve problems, advance existing technologies and

Determine the current flow, Q. A charge q(t) = 50 + 1.0t C flows into an el...

Q. A charge q(t) = 50 + 1.0t C flows into an electric component. Find the current flow.

Avalanche breakdown, Avalanche Breakdown: This type of breakdown takes...

Avalanche Breakdown: This type of breakdown takes place when both sides of junction are lightly doped and consequently the depletion layer is large. In this case, the electric

Calculate the impedance, What is the impedance Z between terminals A and B ...

What is the impedance Z between terminals A and B of the networks shown below? Express your answers in polar form. Three voltages represented by v 1 (t)=100cosωt, v 2 (t)=7

Life interactive ups systems , Normal 0 false false false ...

Normal 0 false false false EN-IN X-NONE X-NONE Life   Interactive UPS Systems

D flip-flop - latch or delay element, Q. D flip-flop - latch or delay eleme...

Q. D flip-flop - latch or delay element? The symbol for the clocked D flip-flop is shown in Figure (a), in which the two output terminals Q and ¯ Q behave just as in the SRFF,

Decoder - introduction to microprocessors , Decoder A decoder is  logic...

Decoder A decoder is  logic  circuit  that energizes a particular  output line for each  combination of input  signal. Fig   shown  the block  diagram  logic diagram  and fu

Write Your Message!

Captcha
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