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1. (WO2017186755) DRIVE SYSTEM FOR INDIVIDUALLY DRIVING TWO INDIVIDUAL PROPELLERS OF A DOUBLE PROPELLER

Pub. No.:    WO/2017/186755    International Application No.:    PCT/EP2017/059859
Publication Date: Fri Nov 03 00:59:59 CET 2017 International Filing Date: Thu Apr 27 01:59:59 CEST 2017
IPC: H02K 7/18
Applicants: SIEMENS AKTIENGESELLSCHAFT
Inventors: FREITAG, Gunter
TEOFILI, Gabriele
Title: DRIVE SYSTEM FOR INDIVIDUALLY DRIVING TWO INDIVIDUAL PROPELLERS OF A DOUBLE PROPELLER
Abstract:
The invention relates to a drive system based on an electric motor concept for driving a double propeller, in particular a contra-rotating double propeller. The drive system comprises a common stator with two individually controllable coil arrangements that are arranged axially one behind the other in a common stator housing. Further, two rotors which are positioned axially one behind the other and coaxially with the coil arrangements are provided with permanent magnets that respectively interact electromagnetically with one of the coil arrangements when coils of the coil arrangements are energized with electric current. The rotors further have respectively a connection device for connecting the respective rotor to the individual propeller that is to be driven by the respective rotor.