Abstract
In this paper, we study the construction, the equations and parameters of induction electrical machines, and also particularities of dynamic properties.
Highlights
Three phase squirrel cage type Induction Motor (IM) are commonly utilized in the industries from the capacity of several kilowatts to thousands of kilowatts as the driving units for the fans, pumps and compressors [1]
The structural representation of three-phase induction machine is shown on Fig. 1
THE PARAMETERS MATRICES OF WINDINGS Active resistances of symmetrical phase stator and rotor windings are well represented by diagonal matrices with (m*m) dimensions (n*n) dimensions respectively: RS = RS. 1; RR = RR. 1 where RS and RR- stator and rotor phase windings resistances ;1-unit matrix
Summary
Three phase squirrel cage type Induction Motor (IM) are commonly utilized in the industries from the capacity of several kilowatts to thousands of kilowatts as the driving units for the fans, pumps and compressors [1]. The traditional methods of modeling of IMs have been applied by several authors. In this method of analysis, it is assumed that the effect of saturation is negligible. In order to investigate the problems like large currents, voltage dips, oscillatory torques and harmonics in power systems during severe transient operations and introduce, the dq-axis model has been found to be well tested and proven describes the basic concept of transient modeling of the machine [2]. The effect of considering the main flux saturation is investigated. The effect of saturation in induction machines can be included through variation of main flux inductance while assuming the leakage inductances to be constant. Transient performance of any electrical machine is greatly affected by sudden changes in its supply system, operating speed, shaft load including any variation of moment of inertia
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