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This paper concerns an initial simplified steadystate method to start to evaluate the behavior of a dc-excited fluxswitching motor at a steady-state, or slow dynamic, vehicle level. Starting from a simplified finite-element motor representation, a two-dimensional co-energy lookup table model is extracted. Then, a model reduction is performed to create steady-state loss maps of the system parts at different torque-speed points, considering the simplified losses. These loss maps are integrated into an electric vehicle model, where a discussion is introduced to illustrate the limitation of using efficiency maps. Finally, to determine an average efficiency of the electrical powertrain during drive cycles, a fast simplified steady-state calculation is performed.

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A demand for the highest possible power density in electrical machinery in some applications often requires a change in conventional and well-known three-phase stator winding solution. This paper discusses high-power turbogenerators with a six-phase winding. Mutual inductance between two three-phase windings requires updating of the equations for transient processes modelling. The equivalent circuits and equations for the dq0-reference frame are summarised, sudden six-phase and three-phase winding short circuit processes of the generator under load are modelled.