US 11,837,923 B2
Rotor for an electric machine and electric machine having a rotor
Ulrich Kehr, Tettnang (DE); and Jochen Eggler, Waldburg (DE)
Assigned to ZF FRIEDRICHSHAFEN AG, Friedrichshafen (DE)
Filed by ZF Friedrichshafen AG, Friedrichshafen (DE)
Filed on Jan. 5, 2022, as Appl. No. 17/568,769.
Claims priority of application No. 10 2021 201 610.3 (DE), filed on Feb. 19, 2021.
Prior Publication US 2022/0271625 A1, Aug. 25, 2022
Int. Cl. H02K 11/25 (2016.01); B60K 1/00 (2006.01)
CPC H02K 11/25 (2016.01) [B60K 1/00 (2013.01); H02K 2211/03 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A rotor (1) for an electric machine (2) operated with a pulsed voltage, the rotor (1) comprising:
at least one sensor element (3) for detecting at least one condition variable of the rotor (1);
a signal processing unit (4) connected to the at least one sensor element (3), the signal processing unit (4) generating measured data based at least in part on the at least one condition variable of the rotor (1) and transmitting the measured data to a control device (5); and
at least one induction coil (7) including at least one electrical conductor (8), the at least one induction coil (7) being at least indirectly supported on an end face of the rotor (1), the at least one induction coil (7) being tuned to a modulation of a fundamental wave field of a magnetic front stray field (12) formed during operation of the electric machine (2) with pulsed voltage to generate electrical energy from the fundamental wave field,
wherein the at least one induction coil (7) is within a pole at the rotor (1), wherein a coil width (6) of each of the at least one induction coil (7) is equal to 50% to 150% of one pole pitch (P).