Back to results
US 12,749,951 B2Granted
Rotor for an externally excited synchronous machine
AssigneeMahle International GmbH
InventorsFlorian Osdoba, Penyo Topalov, Philipp Zimmerschied
Life of this patent
Estimating the term…
Abstract
A rotor for an externally excited synchronous machine, e.g., for use as a traction motor of a motor vehicle, is disclosed. The rotor includes rotor windings arranged on a rotor shaft having at least one cavity. A rectifier is electrically connected to the rotor windings. The rectifier is at least partly arranged in the cavity of the rotor shaft.
Claims20
A rotor for an externally excited synchronous machine, comprising:
- rotor windings arranged on a rotor shaft having at least one cavity,
- a rectifier electrically connected to the rotor windings,
- wherein the rectifier is at least partly arranged in the cavity of the rotor shaft;
- wherein:
- an at least partly hollow shaft end comprising an interior space is provided, wherein the rectifier is arranged in the interior space of the shaft end and the shaft end is at least partly arranged in the at least one cavity of the rotor shaft, or
- a sleeve is provided, wherein the rectifier is arranged in the sleeve and the sleeve is at least partly arranged in the at least one cavity of the rotor shaft;
- and
- wherein:
- longitudinal slits running in the axial direction, into which the rectifier formed as a plug-in printed circuit board is inserted and fixed, are provided in a wall of the at least one cavity, of the interior space or of the sleeve, or
- longitudinal openings, which run in the axial direction and which are injection-molded with plastic, are provided in a wall of the at least one cavity or of the interior space, wherein longitudinal slits running in the axial direction, into which the rectifier formed as a plug-in printed circuit board is inserted and fixed, are provided in the plastic.
7 more elements
An externally excited synchronous machine, comprising:
- a rotor that can be electrically supplied with current, the rotor including:
- rotor windings arranged on a rotor shaft having at least one cavity,
- a rectifier electrically connected to the rotor windings,
- wherein the rectifier is at least partly arranged in the cavity of the rotor shaft,
- an at least partly hollow shaft end comprising an interior space, wherein the rectifier is arranged in the interior space of the shaft end and the shaft end is at least partly arranged in the at least one cavity of the rotor shaft,
- longitudinal slits running in the axial direction, into which the rectifier formed as a plug-in printed circuit board is inserted and fixed, are provided in a wall of the at least one cavity or of the interior space, and
- a rotary transformer rotor of a rotary transformer comprising a secondary coil and a rotary transformer stator.
4 more elements
A traction motor of a motor vehicle, comprising:
- a rotor that can be electrically supplied with current, the rotor including:
- rotor windings arranged on a rotor shaft having at least one cavity,
- a rectifier electrically connected to the rotor windings,
- wherein the rectifier is at least partly arranged in the cavity of the rotor shaft,
- wherein:
- an at least partly hollow shaft end comprising an interior space is provided, wherein the rectifier is arranged in the interior space of the shaft end and the shaft end is at least partly arranged in the at least one cavity of the rotor shaft, or
- a sleeve is provided, wherein the rectifier is arranged in the sleeve and the sleeve is at least partly arranged in the at least one cavity of the rotor shaft;
- and
- wherein:
- longitudinal slits running in the axial direction, into which the rectifier formed as a plug-in printed circuit board is inserted and fixed, are provided in a wall of the at least one cavity, of the interior space or of the sleeve, or
- longitudinal openings, which run in the axial direction and which are injection-molded with plastic, are provided in a wall of the at least one cavity or of the interior space, wherein longitudinal slits running in the axial direction, into which the rectifier formed as a plug-in printed circuit board is inserted and fixed, are provided in the plastic, and
- a rotary transformer including a rotary transformer rotor comprising a secondary coil and a rotary transformer stator.
9 more elements
Dependencies are inferred from the claim text.