An Integrated Brake Disc and Electric Drive for Vehicle Propulsion
EXAMENSARBETE I ELEKTROTEKNIK 300 HP, AVANCERAD NIVÅ STOCKHOLM, SVERIGE 2015 An integrated brake disc and electric drive for vehicle propulsion A FEASIBILITY STUDY JOHAN LINDER KTH KUNGLIGA TEKNISKA HÖGSKOLAN SKOLAN FÖR ELEKTRO- OCH SYSTEMTEKNIK An integrated brake disc and electric drive for vehicle propulsion -A feasibility study JOHAN LINDER Master of Science thesis in Electrical Machines and Drives at the School of Electrical Engineering KTH Royal Institute of Technology Stockholm, Sweden, February 2016. Supervisor: Oskar Wallmark Examiner: Oskar Wallmark TRITA-EE 2016:019 An integrated brake disc and electric drive for vehicle propulsion -A feasibility study JOHAN LINDER c JOHAN LINDER, 2016. School of Electrical Engineering Department of Electric Power and Energy Systems KTH Royal Institute of Technology SE–100 44 Stockholm Sweden Abstract In this thesis, the feasibility to integrate an brake disc and electric machine is investigated. In wheel motors (IWMs) have several advantages, such as saving space in the vehicle, individual and direct control at the wheels and the absence of a mechanical transmission. However, today’s IWMs are heavy and, thus, negatively affect the driving performance of the vehicle due to the increase of the unsprung mass. By integrating an already existing part in the wheel, this increase of the unsprung mass can be minimized. The brake disc manages high temperatures, a significant wear in rough environ- ment, which puts high demands on the rotor. The second part of the machine, the stator, will be significantly affected by the high temperatures of the rotor. The temperatures of the stator are transferred by convection, conduction and radiation from the rotor or brake disc.
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