Induction Machine

Induction Machine:

Approximate Circuit Model : An Approximate Circuit Model of an induction motor, which results in considerable computational ease in analysis, is obtained by shifting the …


Circuit Model Parameters Tests to Determine Circuit Model Parameters Circuit Model Parameters – As the Circuit Model Parameters of an induction motor is similar to that of a transformer, …


Classes of Squirrel cage motors : Classes of Squirrel cage motors – To cater to the different starting and running requirements of a various industrial …


Cogging and Crawling : Cogging and Crawling – A squirrel-cage rotor may exhibit a peculiar behaviour in starting for certain relationships between the number of …


Construction of Induction Motor : The stator of an Construction of Induction Motor is similar to that of a synchronous machine and is wound for …


Deep Bar Rotor : Deep Bar Rotor – The chief advantage of the slip-ring induction motor compared to the squirrel-cage one lies in the fact that …


Development of Circuit Model (Equivalent Circuit): Development of Circuit Model – As we shall be mostly dealing with phasor magnitudes the superbar on phasor symbols …


Double Cage Rotor : Double Cage Rotor – A rotor design, which though more expensive gives still better starting, and running performances than the deep-bar …


High Efficiency Induction Motors : With ever-increasing energy cost the life-time operating cost of an induction motor can be traded against a high efficiency and …


Induction Generator : It has been observed from Fig. 9.14 and Example 9.7 that an induction machine is in generating mode for s < 0 …


Induction machine Dynamics : Induction machine Dynamics – In general, the mechanical time-constant for any machine is much larger than the electrical time constant. Therefore, …


Introduction to Induction Machine : The Introduction to Induction Machine is an important class of electric machines which finds wide applicability as a motor in …


Inverted Induction Machine : In a wound-rotor induction machine the three-phase supply can be given to the rotor windings through the slip rings and the …


Isolated Induction Generator Working Principle : An Isolated Induction Generator Working Principle feeding a load is shown in Fig. 9.61. The delta-connected capacitors across the …


Power Across Air Gap Torque Power Output : Power Across Air Gap Torque Power Output – The circuit model of Fig. 9.7(e) is redrawn in …


Principle of Operation of Induction Motor : The Principle of Operation of Induction Motor Figure 9.4 shows the cross-sectional view of an induction motor. The …


Speed Control in Induction Machine : Speed Control in Induction Machine – Stepless control of speed of induction motors cannot be carried out as efficiently …


Starting Induction Motor : At the time of Starting Induction Motor slip being unity, the load resistance with reference to the approximate circuit model of …


Torque Slip Characteristic : The expression for Torque Slip Characteristic (T(s)) is easily obtained by finding the Thevenin equivalent of the circuit to the left …