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In this paper, we present the performance of massively parallel processing in finite element electromagnetic field analyses with time periodic explicit error correction. The Domain decomposition technique is used for parallelization, and the Message Passing Interface (MPI) library is used for processing communications. Results show over a 64-fold speed increase compared with the sequential solver,...
This paper describes the implementation and functionality of a new analytic-numeric dynamic core loss model for permanent magnet synchronous machines (PMSM). The tool chain is presented and validated by experimental results. In contrast to conventional core loss models (according to Steinmetz, Bertotti and Jordan), the presented method uses the stator flux linkage vector — an integral and thus indirectly...
Using ANSYS finite element package, an electromagnetic simulation model is developed for switched reluctance generator (SRG) in which dynamic characteristics are predicted precisely with finite element method (FEM). Carrying out 2D finite element (FE) transient analysis, instantaneous phase current and stator pole flux waveform are predicted when magnetic saturation is considered in the analysis....
Blockage of hollow strands' waterway can cause cooling-water flux decreasing, cooling effect falling and stator bar overheating in water-cooling turbo-generators, which could induce generators not to operate normally. It helps to calculate precisely temperature field of generators and diagnose incipiently the plugging fault of cooling-waterway that one study fluid characteristic of cooling-water on...
A method for steady-state calculation of mechanical or structural systems formulated by the finite element method (FEM) is presented. The procedure introduced is used to calculate the mechanical vibrations caused by the electromagnetic excitation of induction motors. Compared to other approaches, this method enables the free choice of the time discretisation algorithm. The method is presented for...
We present a hybrid magnetic bearing based on a novel structure. The X and Y magnetic fields of the bearing are independent of each other, which decreases the magnetic field coupling of the two dimensions significantly. An external rotor structure is designed into the magnetic bearing. We discuss the working principle of the magnetic bearing and derive its mathematical model. Our computer-aided simulation...
Saturation effects in salient pole synchronous machines are generally modelled by assuming that the saturation effect is primarily limited to the field pole. However, saturation of the stator teeth and core can also become saturated such as when operating as a generator with a leading power factor load. This paper addresses the modeling and simulation of simultaneous saturation of both the stator...
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