Back to results
US 12,647,001 B2Granted
Assembly for an electric machine
AssigneeRolls-Royce Deutschland Ltd & Co KG
InventorWolfram Birkmayer
Life of this patent
Estimating the term…
Abstract
An assembly for an electric machine includes: a body; a plurality of teeth fixed to the body; a plurality of tooth windings, wherein each tooth winding includes a first electrical conductor and a second electrical conductor that are wound around the same tooth at least at one winding section along a winding axis and thereby alternate in the direction of the winding axis; and a differential protection device with a plurality of sensors, (e.g., current sensors), wherein each sensor is configured to detect a voltage at, and/or the strength of a current through, the first conductor or the second conductor at least at two points of a tooth winding of the plurality of tooth windings.
Claims19
An assembly for an electric machine, the assembly comprising:
- a body;
- a plurality of stator teeth anchored on the body;
- a plurality of tooth windings, wherein each tooth winding of the plurality of tooth windings has a first electrical conductor and a second electrical conductor, wherein at least one winding portion of the respective first electrical conductor and at least one winding portion of the respective second electrical conductor are wound along a winding axis around a same tooth and alternate in a direction of the winding axis;
- a differential protection device with a plurality of sensors configured to detect a voltage on and/or a current strength through the first electrical conductor or the second electrical conductor at two or more points of a tooth winding of the plurality of tooth windings, wherein the differential protection device comprises:
- first current sensors and/or second current sensors, wherein first signals from the first current sensors are configured to be provided to a first comparator and/or second signals from the second current sensors are configured to be provided to a second comparator;
- and
- a multiplexer configured to receive differential signals of a plurality of comparators comprising the first comparator and the second comparator.
4 more elements
An assembly for an electric machine, the assembly comprising:
- a body;
- a plurality of stator teeth anchored on the body;
- a plurality of tooth windings, wherein each tooth winding of the plurality of tooth windings has a first electrical conductor and a second electrical conductor, wherein at least one winding portion of the respective first electrical conductor and at least one winding portion of the respective second electrical conductor are wound along a winding axis around a same tooth and alternate in a direction of the winding axis;
- and
- a differential protection device with a plurality of sensors configured to detect a voltage on and/or a current strength through the first electrical conductor or the second electrical conductor at two or more points of a tooth winding of the plurality of tooth windings,
- wherein the differential protection device comprises a first current sensor that, in order to measure a differential current strength through the first electrical conductor, is arranged at points of the first electrical conductor electrically connected to one another via the at least one winding portion, and/or a second current sensor that, in order to measure a differential current strength through the second electrical conductor, is arranged at points of the second electrical conductor electrically connected to one another via the at least one winding portion.
3 more elements
An electric machine comprising:
- an assembly;
- and
- a further assembly,
- wherein the assembly and the further assembly are rotatable relative to one another, and
- wherein the assembly comprises:
- a body;
- a plurality of stator teeth anchored on the body;
- a plurality of tooth windings, wherein each tooth winding of the plurality of tooth windings has a first electrical conductor and a second electrical conductor, wherein at least one winding portion of the respective first electrical conductor and at least one winding portion of the respective second electrical conductor are wound along a winding axis around a same tooth and alternate in a direction of the winding axis;
- and
- a differential protection device with a plurality of sensors configured to detect a voltage on and/or a current strength through the first electrical conductor or the second electrical conductor at two or more points of a tooth winding of the plurality of tooth windings,
- wherein the differential protection device comprises a first current sensor that, in order to measure a differential current strength through the first electrical conductor, is arranged at points of the first electrical conductor electrically connected to one another via the at least one winding portion, and/or a second current sensor that, in order to measure a differential current strength through the second electrical conductor, is arranged at points of the second electrical conductor electrically connected to one another via the at least one winding portion.
8 more elements
Dependencies are inferred from the claim text.