US 12,135,355 B2
Device for sensing a high-frequency event signal in a rotating electrical machine
Martin Meyer, Nuremberg (DE); Dirk Scheibner, Nuremberg (DE); and Jürgen Schimmer, Nuremberg (DE)
Assigned to Innomotics GmbH, Nuremberg (DE)
Appl. No. 17/785,766
Filed by INNOMOTICS GMBH, Nuremberg (DE)
PCT Filed Sep. 30, 2020, PCT No. PCT/EP2020/077305
§ 371(c)(1), (2) Date Jun. 15, 2022,
PCT Pub. No. WO2021/121700, PCT Pub. Date Jun. 24, 2021.
Claims priority of application No. 19216617 (EP), filed on Dec. 16, 2019.
Prior Publication US 2023/0053974 A1, Feb. 23, 2023
Int. Cl. G01R 31/34 (2020.01); H02K 11/20 (2016.01); H02K 11/35 (2016.01); H02K 15/00 (2006.01)
CPC G01R 31/343 (2013.01) [G01R 31/34 (2013.01); G01R 31/346 (2013.01); H02K 11/20 (2016.01); H02K 11/35 (2016.01); H02K 15/00 (2013.01)] 20 Claims
OG exemplary drawing
 
1. Apparatus for sensing a high-frequency event signal in a rotating electrical machine, said apparatus comprising:
a HF evaluation apparatus;
at least two sensors arranged in the rotating electrical machine and designed to sense a low-frequency sensor signal, each of the at least two sensors comprising an antenna for decoupling the high-frequency event signal from a high-frequency electromagnetic field of the rotating electrical machine; and
a coupling element, in particular reactive coupling element, connecting the at least two sensors to the HF evaluation apparatus, said coupling element designed to transfer the high-frequency event signal from at least one of the at least two sensors to the HF evaluation apparatus and to decouple the low-frequency sensor signal.