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

Can you explain honorarium?, Can you explain Honorarium? Ans: Honora...

Can you explain Honorarium? Ans: Honorarium is a remuneration for work performed which is intermittent or occasional in character and either so laborious or of such special

Working of simple air evaporative, With the help of neat sketch T-S diagram...

With the help of neat sketch T-S diagram illustrate the working of simple air evaporative cooling system used in air craft. With the help of neat diagram and T-S diagram iillust

Equalizer rings, purpose of equalizer rings in lap winding

purpose of equalizer rings in lap winding

Obtain the node voltages and current through each element, Q. For the circu...

Q. For the circuit shown in Figure, develop and execute a PSpice program to obtain the node voltages and the current through each element.

Find the t- domain forced response, Consider an RLC series circuit excited ...

Consider an RLC series circuit excited by v(t) = Ve st in the time domain. Assume no initial capacitor voltage or inductive current at t = 0. Draw the transformed network in the s

Holding current - thyristor , Holding current The holding  current i...

Holding current The holding  current is  the value  of on state  current  required  to maintain  conduction once the  device  the device has  fully timed  on and  the  gate

Engine management systems for ic engines, In continuation of Part-B, the st...

In continuation of Part-B, the student is required to configure an engine management system for the proposed engine and produce a report including the following: A preamble

Determine the energy fluence - fluence rate, 1. The photon fluence rate is ...

1. The photon fluence rate is 10 7 photons mm -2 sec -1 for a beam of γ rays. One fourth of the photons have energies of 100 keV, one half have energies of 80 keV and the remain

Illustratecommon base configuration, Q. IllustrateCommon base configuration...

Q. IllustrateCommon base configuration? Common base configuration: In this circuit the base is common to both input and the output.Such a configuration is also known as groun

Capacitive coupling, A Class, "A" Amplifier is needed with the following sp...

A Class, "A" Amplifier is needed with the following specification: Collector Current = 5mA Needed offset voltage across RE= 2V Lowest input Frequency = 50Hz Use a BC108

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