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A 3D model reflecting entire internal structure of the asynchronous machine using finite elements method, has been presented here. Nodal finite elements have been used to approximate scalar potential and edge finite elements to approximate vector magnetic potential. This model includes both the skew of the rotor bars as well cross current flowing through the rotor iron laminates. The three-phase stator...
Dissipative inductances of the autotransformer influence greatly the commutative processes in multipulse electrical energy rectifiers. This paper discusses the model of multiwinding autotransformer used in calculations of transient states, based on FEM in 3D formulation. Once supplemented by a diode circuit, it was acting as a model of multipulse electrical energy rectifier, at calculations of transient...
In 3D FEM's of electric machines, the scalar potential is approximated by using node finite elements and vector magnetic potential by edge finite elements. Such 3D FEM's are able to include rotor cage bar skew and cross-currents in magnetic circuits. The electric machines can be modelled in its entirety, including housing, shaft and bearing areas, which makes it possible to study other phenomena....
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