International Journal of Computer Architecture and Mobility (ISSN 2319-9229) Volume 2-Issue 9, July 2014 Available Online at: www.ijcam.com 2D Modelling Induction Machine Dahmane HACHI 1 , Badreddine NAAS 1, 2 , Bachir NAAS 1, 2 , AIDA Kamel, CHAHARA Belkacem Faculty of Science and Technology, University of Djelfa, 17000 DZ, Algeria 1 Applied Automation and Industrial Diagnostic Laboratory (LAADI), Algeria 2 [email protected], [email protected], [email protected], Abstract— In this study of the induction machine is simulated using a 2D Finite elements methods by FEMM. Its main goal is to find the best geometrical structure. The simulations have been performed using the magnetic vector potential A formulation and have been limited to a magnetodynamic case. The influence of the geometrical parameters and there magnetic properties are taken account in order to optimise the conception of the induction machine. Keywords— induction machine IM, Finite element method FEM, Magnetodynamic Finite Element Formulation. I. INTRODUCTION The asynchronous motor is currently the electric motor whose use is most prevalent in the industry. Its main advantage lies in the absence of sliding electrical contacts, which leads to a simple, robust and easy to build structure. The power range from a few W to several MW. Directly connected to industrial network with constant voltage and frequency it runs at a slightly different speed synchronous speed. This is the engine that is used for producing virtually all the drives at a constant speed. Thanks to the power electronics and control, asynchronous motor also allows the realization of variable speed drives. It takes place in the latter area is growing. Have an engine with minimum torque ripple, economic and compact as possible, these are the objectives that a manufacturer sets. But more often, the manufacturer is forced to make a choice that depends on the specifications imposed on it. Indeed, the construction of a power machine is a function of the intended application. The machine can operate either below or above its power [2]. In the first case, there will be oversized and it will be costly. In the second case, we will under-sizing, which will result in overheating of the coils etc.. This shows the construction of a specific preliminary analytical calculation electrical machines of any electrical machine presents certain difficulties. The terms of reference alone is not enough for the manufacturer's sizing machine. In general, it is necessary to be limited, in the preliminary calculation to estimate a parameter based on the data of a machine of the same type already built. After the calculation of the main dimensions, one calculates the various constraints (electrical, magnetic, ...) in different parts of the machine. The results must be located within the permissible limits established by the experience of other existing machines. II. MODELLING INDUCTION MOTOR IN 2 D Generally, an electromagnetic device comprises several materials, some of which have nonlinear characteristics. Furthermore, the electromagnetic phenomena vary significantly within the structure. Therefore, a complete analysis of the structure in three dimensions (3D) is wasteful and costly in terms of computation time. The use of 2D models is particularly simple and effective choice is realistic. In this case, the density of the magnetic excitation potential and the current vector is perpendicular to the cross section of the engine, which represents the study plan and wherein the magnetic flux flows. Furthermore, the vector potential has only one component along (OZ) which is independent of the third dimension (z) and the condition of the Coulomb gauge is naturally satisfied in this case.
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International Journal of Computer Architecture and Mobility
(ISSN 2319-9229) Volume 2-Issue 9, July 2014
Available Online at: www.ijcam.com
2D Modelling Induction Machine
Dahmane HACHI 1
, Badreddine NAAS 1, 2
, Bachir NAAS 1, 2
, AIDA Kamel, CHAHARA Belkacem
Faculty of Science and Technology, University of Djelfa, 17000 DZ, Algeria 1