By Ernest Mendrela, Janina Fleszar, Ewa Gierczak
Modeling of Induction cars with One and levels of Mechanical Freedom offers the mathematical version of induction cars with levels of mechanical freedom (IM-2DMF), shaped within the electromagnetic box in addition to in circuit thought, which permits interpreting the functionality of those 3 teams of cars bearing in mind facet results, winding and present asymmetry. The version derived relies at the idea of magnetic box wave relocating within the air-gap with a helical movement. ordinarily, the rotor strikes helically too with the rotary-linear slip. The electromagnetic box in addition to motor functionality of the actual vehicles is analyzed.
The mathematical version of IM-2DMF is extra common to the version of induction vehicles with one measure of mechanical freedom, i.e. rotary and linear cars. Examples of modeling varieties of rotary disc automobiles and flat linear motor with twisted basic half are offered with inclusion of finite stator and rotor size and width results. The simulation effects are subsidized by means of the measurements conducted at the laboratory types, that have been confirmed at the specified size stand.
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Additional info for Modeling of Induction Motors with One and Two Degrees of Mechanical Freedom
Example text
For this purpose the test was carried out on the motor with the reluctance rotor shown in Fig. 4-20. L(n - n) l ' n. 13 at Sxz = 0, the minor changes around the synchronous rotary speed n. should result in the change of the linear motion direction. The experiment proved this conclusion. The change of rotary speed above and below its synchronous value caused an oscillatory motion of the motor. A study on steady-state stability conditions of the rotary-linear motors can be found in [43]. In [33] motor with the rotating-traveling field generated by the set of linear motors is presented.
0028 m 49 Simulation ofInduction Motors with Two Degrees ... 288 m Figure 4-11. Laboratory model of double-winding rotary-linear induction motor 50 Chapter 4 The calculations of the electromagnetic field and motor performance were done for the supply frequency f = 50Hz. The magnetic flux density distributions determined on the rotor surface along the stator length (z axis) at different rotor speeds, when two windings were supplied, are shown in Fig. 4-12. In the middle of the stator length the maximums can be spotted.
In general, the finite armature length affects not only the torque and thrust but also contributes to an increase of currents and electric power losses and a decrease of power factor. This is shown in more detail in [16,20,55]. To verify the accuracy of modeling the motor, the laboratory motor model was tested on the measurement stand that is described in section 104 and in the references [32, 36]. Fig. 4-8 shows the magnetic flux density distributions along both armatures measured and calculated on the rotor surface.
