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Extra info for COMPEL - Selected papers from the international conference on electrical machines (ICEM) 2002, Bruges, Belgium (Volume 22, Number 4, 2003)

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1223-6. Ku¨ppers, S. (1996), “Numerische Verfahren zur Berechnung und Auslegung von DrehstromKlauenpolgeneratoren (Numerical methods for the calculation and design of three-phase claw-pole alternators)”, PhD thesis, Department of Electrical Machines, Aachen Institute of Technology, Shaker verlag, Aachen. , Siek, J. edu/research/itl, [Online] Ramesohl, I. (1999), “Numerische Gera¨uschberechnung von Drehstrom-Klauenpolgeneratoren (Numerical acoustic cal-culation of tree-phase claw-pole alternators)”, PhD thesis, Department of Electrical Machines, Aachen Institute of Technology, Shaker verlag, Aachen.

Current traces at different speed values in uncoupled phases active. It is however, still possible that two phases adjacent to each other come into operation in an overlapping time period. What is happening in such a case will be addressed in the following. We know that in principle, the flux linkage of the two phases comes from the coil sides which lay in the same pole break side by side. The respective inductance therefore must be closely related to the slot stray inductance in the wide slot which makes up the pole break.

The main difference between these motors is that the 15 kW motor has open and the 37 kW motor has closed rotor slots. The values of the varied parameters in the analysis were the following: the used voltages were 100, 250 V and the rated voltage (380 V for 15 kW motor and 400 V for 37 kW motor). 6 percent for the 37 kW motor. The frequency response functions (FRF) were calculated using a displacement pulse with amplitudes 10, 20, 30 and 40 percent of the air gap. Figure 3. The cross-sectional geometry of the 15 kW motor An unbalanced magnetic pull 869 Figure 4.

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