Determination of squirrel cage induction machine parameters including skin effect in steady-state operation

2008 ◽  
Author(s):  
O. Touhami ◽  
M. Mehenoun ◽  
M.O. Mahmoudi ◽  
N. Benakba
Keyword(s):  
Steady State ◽  
Skin Effect ◽  
Induction Machine ◽  
Squirrel Cage ◽  
Steady State Operation

scholarly journals An Improved 2-D Subdomain Model of Squirrel-Cage Induction Machine Including Winding and Slotting Harmonics at Steady State

2018 ◽  
Vol 54 (2) ◽  
pp. 1-12 ◽  
Author(s):  
Emile Devillers ◽  
Jean Le Besnerais ◽  
Thierry Lubin ◽  
Michel Hecquet ◽  
Jean-Philippe Lecointe
Keyword(s):  
Steady State ◽  
Induction Machine ◽  
Squirrel Cage

Fractional Order: Frequential Parametric Identification of the Skin Effect in the Rotor Bar of Squirrel Cage Induction Machine

2003 ◽  
Author(s):  
Sylvain Canat ◽  
Jean Faucher
Keyword(s):  
Fractional Order ◽  
Frequency Band ◽  
Iterative Procedure ◽  
Skin Effect ◽  
Transfer Functions ◽  
Induction Machine ◽  
Parametric Identification ◽  
Squirrel Cage ◽  
Asynchronous Motors ◽  
Levenberg Marquardt

In this article, the authors propose a method of modeling of the skin effect in the rotor bars of asynchronous motors. Two compact transfer functions with a fractional order were selected to represent the admittance of the bar. The compactness of these transfer functions makes it possible to take into account the diffusive phenomenon of the skin effect on a broad frequency band and is characterized by a small quantity of parameters to identify. The authors carried out an identification by the method of the model associated with an iterative procedure of Levenberg-Marquardt.

An Insightful Steady-State Performance of a Squirrel Cage Induction Generator Enhanced with STATCOM

2014 ◽  
Vol 15 (3) ◽  
pp. 205-215 ◽  
Author(s):  
Olorunfemi Ojo ◽  
Mehdy Khayamy ◽  
Mehari Bule
Keyword(s):  
Steady State ◽  
Reactive Power ◽  
Voltage Source ◽  
Induction Generator ◽  
Squirrel Cage ◽  
Steady State Operation ◽  
Terminal Voltage ◽  
Squirrel Cage Induction Generator ◽  
Generator Terminal ◽  
Static Compensator

Abstract This paper presents the regulation of the terminal voltage and reactive power of a grid-connected squirrel cage induction generator. A shunt connected voltage source inverter (VSI) with a capacitor in the DC side operating as a Static Compensator (STATCOM) and a shunt capacitor are used for regulating the generator terminal voltage and limit the reactive power demand from the grid. Simulation results for steady-state operation for a wide variation of speed in the super-synchronous region are presented as well as the dynamic stability of the system. Closed-form steady-state characteristics equations for the system are used to determine key variables and to demonstrate how the operation of the system depends on various parameters. This characteristics curve which contains all of the equations of the system provides the all in one insightful view to the inherent characteristics of the system and the effect of the parameter variation on the terminal voltage plane.

scholarly journals Mathematical Model and Characteristics of the Induction Motor with a Power Supply from a Current Source

2021 ◽  
Vol 64 (5) ◽  
pp. 421-434
Author(s):  
V. S. Malyar ◽  
A. V. Malyar
Keyword(s):  
Mathematical Model ◽  
Steady State ◽  
Power Supply ◽  
Skin Effect ◽  
Jacobi Matrix ◽  
Current Source ◽  
Static Characteristics ◽  
Squirrel Cage ◽  
The Mathematical Model ◽  
Electrical Equilibrium

. Methods and mathematical models for studying the modes and characteristics of the three-phase squirrel-cage induction motor with the power supplied to the stator winding from the current source have been developed. The specific features of the algorithms for calculating transients, steady-state modes and static characteristics are discussed. The results of the calculation of the processes and characteristics of induction motors with the power supply from the current source and the voltage source are compared. Steady-state and dynamic modes cannot be studied with a sufficient adequacy based on the known equivalent circuits; this requires using dynamic parameters, which are the elements of the Jacobi matrix of the system of equations of the electromechanical equilibrium. In the mathematical model, the state equations of the stator and rotor circuits are written in the fixed two-phase coordinate system. The transients are described by the system of differential equations of electrical equilibrium of the transformed circuits of the motor and the equation of the rotor motion and the steady-state modes by the system of algebraic equation. The developed algorithms are based on the mathematical model of the motor in which the magnetic path saturation and skin effect in the squirrel-cage bars are taken into consideration. The magnetic path saturation is accounted for by using the real characteristics of magnetizing by the main magnetic flux and leakage fluxes of the stator and rotor windings. Based on them, the differential inductances are calculated, which are the elements of the Jacobi matrix of the system of equations describing the dynamic modes and static characteristic. In order to take into account the skin effect in the squirrel-cage rotor, each bar along with the squirrel-cage rings is divided height-wise into several elements. As a result, the mathematical model considers the equivalent circuits of the rotor with different parameters which are connected by mutual inductance. The non-linear system of algebraic equations of electrical equilibrium describing the steady-state modes is solved by the parameter continuation method. To calculate the static characteristics, the differential method combined with the Newton’s Iterative refinement is used.

STEADY-STATE DETERMINATION OF FUEL-BOND NITROGEN IN DIESEL AND INDUSTRIAL GAS OIL

Clean Air ◽  
2007 ◽  
Vol 8 (4) ◽  
pp. 359-371
Author(s):  
A. Medeiros ◽  
R. Edenhofer ◽  
K. Lucka ◽  
H. Kohne
Keyword(s):  
Steady State ◽  
Gas Oil ◽  
State Determination
Sign in / Sign up

Export Citation Format

Share Document