Modeling the Energy Evaluation for an Electric Machine

Abstract

The regulations concerning CO2 emissions and the need for fuel economy and low harmful emissions press forward the vehicle manufacturers in their electric vehicles development tendencies. Currently, most of the vehicle manufacturers are producing and selling hybrid and electric vehicles, being acceptable solutions against pollution inside crowded urban areas. The electric machine for the electric vehicles is not only the energy consumer, but also the energy producer during regenerative braking. Its design and type vary, being chosen for achieving the established performances. The electric vehicle powertrain efficiency depends on the electric machine performances. Therefore, by investigating the functional behavior for an electric machine as part of an electric powertrain new research issues appear. This paper highlights the needs for evaluating the energy efficiency for electric machines long before being produced, by using virtual mock-up-ing approach. The evaluation consists in determining the thermal losses using simulation.