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In this work an integrated model for acoustic evaluation of electric vehicles is introduced. The paper focuses on the force excitation part of the model. The analysis is performed for permanent magnet synchronous machines. The excitation forces are placed on the stator teeth and calculated for a structure dynamic model of the power train. A model for the acoustic emission is adapted and finally the...
A new type of direct drive motor for the scroll type of compressor is studied analytically. The first model with 2-pole stator and 4-pole orbiter, which is corresponding to the rotor in a usual motor, and the second model with 4-pole stator and 2-pole orbiter is presented. The analysis is done by using two-dimensional finite element method. The motor has the driving force to compress the gas and normal...
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