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The paper analyses the influence of induction machine (IM) design on rotor slotting harmonics used for sensorless control strategies. These harmonics have a direct impact on flux and rotor position estimation accuracy. Therefore prediction of their magnitude helps in selecting suitable machine designs with regard to stator/rotor slotting and winding configuration. The paper at hand focuses on the...
This paper presents a main flux oriented model of an induction machine which considers the saturation in both magnetizing and leakage inductances. The model is based on a virtual air gap. With this model it is possible to simulate the saturation characteristic and the cross-saturation effect. The validity of these results is proved with measurements on a test bench. A procedure is presented that shows...
This paper presents a new induction motor model specifically developed for simulating self-sensored variable speed drives which employ signal injection based sensorless control techniques. The model is to be used to investigate improved filtering algorithms and closed loop speed controllers. The model employs a simple state space equivalent circuit based model of the induction machine, which is enhanced...
The model of the squirrel cage AC Motor is based on multiple coupled circuits and takes into account the geometry and winding layout of the machine. All inductances are derived by means of the winding function approach and are integrated with the decomposition into their Fourier series. An important issue in such effort is the modeling of the induction motor including rotor slot harmonics (RSH) under...
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