A compact servo drive: five phase, air cooled, with highly integrated inverter for industrial use

A five-phase, permanent-magnet synchronous motor with smart stator teeth "SST concept" and without star point connection is presented. The whole power electronics is integrated in the motor housing. This servo drive is much more compact and powerful than the state-of-the-art compact servo drives shown in Fig. 1 and previously published air-cooled concepts, published in [1] or [2]. The drive realizes precise rotor positioning with a low-cost magnetic encoder. Thermal problems of the integrated inverter had been solved by distributing the heat intake of the power semiconductors. This report is based on the project "EMiLE" which is funded by the German Federal Ministry of Education and Research under promotional reference number 16EMO0007. The authors are responsible for the contents of this publication.