... Volume integral formulation Unstructured PEEC Surface impedance condition Losses A major interest in using volume integral methods for three-dimensional magnetic and electric fields analysis is that the air region does not need to be meshed. Moreover, the development of new efficient matrix...

... is evaluated through the voltages and current measured on the device terminals without introducing models for evaluation of the iron core losses. The results presented in this paper show that the efficiency of the tested devices decreases with the decreasing modulation frequency when supplied by the PWM...

...Michael G. Pantelyat; Oszkár Bíró; Andrej Stermecki Purpose The paper seeks to present a methodology of computer simulation of 3D transient electromagnetic fields, losses and forces due to negative sequence currents in fragments of large synchronous turbogenerator rotors. The methodology allows...

... to estimate eddy‐current losses in iron stacks, and on the other hand it can be incorporated into 2D FE analysis including the losses in the field solution and enhancing its power and energy balance. The adequate modelling of eddy currents in electrical machines is intrinsically a 3D problem. However...