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The most critical part of the induction machines which determines on their life time operation are rolling element bearings. To ensure reliable drive with an induction machine requires deep insight in electro-mechanical dynamics during its operation. The flexible multibody modeling technique enables the simulation of dynamic loads on all drive components. This paper focuses on complex dynamic modeling...
This paper deals with the effect of laminations on natural frequencies of asynchronous machine magnetic core. Measurement of natural frequency of stator core is presented. Numerical model and calculation of natural frequency of core is described in next part. Comparison of measurement and mathematical model is discussed.
The modern design of an induction traction machine includes a complex of coupled electromagnetic and thermal analyses for effective utilization of machine's space. This paper summarizes a comparison between less and more complicated ways of induction machine's modelling.
In the supervision of electrical equipment, the task of diagnostic system is to detect an upcoming machine fault as soon as possible, in order to save expensive manufacturing processes or to replace fault parts. An important issue in such effort is the modelling of the induction machine (IM) including rotor bar and end-ring faults, with a minimum of computational complexity. In this paper, a simpler...
The total losses of a frequency converter are calculated by using a fast fixed-step circuit simulator. A simple model for calculating the frequency converter total losses at different operating points is presented. Direct torque control (DTC) is applied as the control method of the converter. The simulated converter losses are verified by measurements.
The need for detection of rotor faults at an earlier stage, so that maintenance can be planned ahead, has pushed the development of monitoring methods with increasing sensitivity and noise immunity. An important issue in such effort is the modelling of the induction machine including rotor bar and end-ring faults, with a minimum of computational complexity. In this paper, a simpler method is employed...
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