Patent · US Active

Electric motor with switchover elements in the magnetic circuit

US11218039B2 · kind B2 · utility

0Cited by

0References

14Claims

0Family size

Assignee

Schaeffler Technologies AG & Co. KG · DE

Inventors

Matthias Gramann · Neunkirchen, DE
Wolfgang Reik · Bühl, DE
Miriam Engler · Bühl, DE
Peter Schwanemann · Bühl, DE
Carsten Angrick · Appenweier, DE

Key dates

Filing date	Feb 28, 2018
Grant date	Jan 4, 2022
Priority date	—
Expiry date	Aug 19, 2038

Classification

Technology area (CPC H)Electricity
CPC primaryH02K2213/09
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

An internal rotor for an electric machine includes a rotational axis, an outer circumferential face which delimits the internal rotor, a pole arrangement comprising a centroid, and an actuating mechanism for moving the pole arrangement towards the rotational axis or away from the rotational axis to set a first spacing between the outer circumferential face and the centroid. In an example embodiment, the actuating mechanism has an actuator for moving the pole arrangement. The actuator has a hydraulically operable piston, a pneumatically operable piston, an electric motor actuator, or converts an axial force to a radial force. In an example embodiment, the actuating mechanism is operatively connected to the pole arrangement. The actuating mechanism is arranged between the rotational axis and the pole arrangement, or the actuating mechanism is arranged between the outer circumferential face and the pole arrangement.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.