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Zum Vergleich von verschiedenen Fahrzeugen bezü glich Kraftstoff-bzw. Energieverbrauch sind unterschiedliche Fahrzyklen konzipiert worden. Sechzehn der davon am meisten verwendeten Fahrzyklen werden in vorliegender Arbeit analysiert. Dadurch kann festgestellt werden, ob eine bestimmte elektrische Traktionsmaschine generell fü r Elektrofahrzeuge geeignet ist bzw. eine optimierte Auslegung der elektrischen Traktionsmaschinen fü r bestimmte Fahrzyklen sinnvoll ist.Schlü sselwö rter: Fahrzyklus; Elektrofahrzeug; elektrische Traktionsmaschine; Asynchronmaschine; geschaltete Reluktanzmaschine Analysis of different driving cycles for the introduction of electric vehicles.Driving cycles are tools designed for the comparison of fuel or energy consumption between different vehicles. In this paper, sixteen of the most used driving cycles are analyzed. It will be examined, if one particular electric traction machine is generally adapted for electric vehicles and if an optimal design of these machines for particular driving cycles makes sense.

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This article presents a method to determine the convective heat transfer coefficient on the end windings of an induction motor. Based on dimensional analysis and heat transfer coefficient values derived by computational fluid dynamics, a correlation between given boundary conditions and the heat transfer coefficient on the end windings has been found.The results can be used in transient simulations of operating cycles. In order to make the application more universal, the approach has been made independent of the characteristics of the fan used for cooling the electrical machine.