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

Explain and draw hysteresis loop for soft magnetic material, Draw the hyste...

Draw the hysteresis loop for a soft magnetic material and compare it with the hysteresis loop of hard magnetic material. Give two examples of each. Soft and hard magnetic mate

Biasing clamper, Ask question #Minwhat is biasing of clamper imum 100 words...

Ask question #Minwhat is biasing of clamper imum 100 words accepted#

Evaluate parameters of a bjt, Q. The parameters of a BJT are given by α = 0...

Q. The parameters of a BJT are given by α = 0.98, I CBO = 90 nA, and i C = 7.5 mA. Find β, iB, and iE.

Explain the drain characteristics of jfet with external bias, Q. Explain th...

Q. Explain the drain characteristics of JFET with external bias? It gives relation between Id and Vds for different values of Vgs.(which is called the running variable). The ab

Test quipment, The frequency of an oscillator may be measured by an oscillo...

The frequency of an oscillator may be measured by an oscilloscope with a callbrated time base(True/False)

Explain about the typical embedded system hardware unit, Explain about the ...

Explain about the typical embedded system hardware unit. Typical Embedded System Hardware Unit: Program Flow and data path Control Unit (CU): comprises a fetch unit for fetc

Sub instruction - op code format , SUB Instruction Op code  format is...

SUB Instruction Op code  format is of SUB  instruction is Replace  the three bit code  of the register R from   to obtain the op code of the  required SUB  instruction . o

Magnetic field, what is the difference between static and induced emf

what is the difference between static and induced emf

Video graphics array and colour graphics adapter, What are the differences ...

What are the differences between Colour Graphics Adapter and Video Graphics Array graphics adapters? The Colour Graphics Adapter (CGA), originally also termed as the Colour/G

Signals, Using the audiorecorder() function in MATLAB, make a recording of ...

Using the audiorecorder() function in MATLAB, make a recording of your voice. Use a sample rate of 8kHz, 16 bits per sample, and aim to record around 2 seconds worth. Quantize th

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