The electrification of the powertrain is a technology with a huge potential to reduce the vehicle fuel consumption. The different types of electrification, from start-stop via 48 V and high voltage hybrids up to all electric vehicles have to be considered to fulfil the different mobility needs. The 48 V technology has a huge potential to become standard in a large number of vehicles, based on its good ratio between fuel saving and integration costs. 48 V belt driven starter generator systems consist of an electrical machine with integrated power electronics beside the components of the electrical power supply. As e-machine type induction machines can beneficially be applied due to their special properties and potentials. In this contribution these properties are described in detail - as the robust design, high performance capabilities, high drive dynamics and advantageous system aspects. Finally also promising commercial benefits can be stated. Based on a reference design of a typical induction machine for the described application, beneficial illustrations of the typical e-motor characteristics are introduced, including the impact of some design modifications as the variation of motor stack length and the application of a Cu die cast rotor (instead of Al die cast). Furthermore the compliance of the e-motor performance to the load cycle requests with the impact of a belt ratio variation can be shown.
Special properties and potentials of induction machines in belt driven starter generator systems
2014
20 Seiten, Bilder, Tabellen
Conference paper
Storage medium
English
Special properties and potentials of induction machines in belt driven starter generator systems
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