US 12,500,488 B2Granted

Electrical machine

AssigneeHamilton Sundstrand Corporation

InventorsGrzegorz Ryszard Popek, Mital Shah

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Abstract

An electrical machine includes a first set of windings, a second set of windings and a power controller connected to the first set of windings by a first set of feeder cables. The power controller controls the current and/or voltage supplied to the first set of windings at a control frequency and generates a test signal to supply to the first set of windings. The test signal has one or more frequency components having a frequency that is significantly higher than the control frequency. The test signal in the first set of windings generates an electromagnetic field that induces a current or voltage in the second set of windings. The power controller includes a detector connected to the second set of windings by a second set of feeder cables. The detector measures the voltage and/or current response of the induced current or voltage.

Claims15

Dependent claims

An electrical machine comprising:

a first set of windings;
a second set of windings;
a power controller connected to the first set of windings by a first set of feeder cables;
wherein the power controller is arranged to control the current and/or voltage supplied to the first set of windings via the first set of feeder cables at a control frequency;
wherein the power controller is further arranged to generate a current and/or voltage test signal to supply to the first set of windings via the first set of feeder cables;
wherein the current and/or voltage test signal comprises one or more frequency components having a frequency that is significantly higher than the control frequency;
wherein the first set of windings is arranged such that the test signal causes the first set of windings to generate an electromagnetic field;
wherein the first set of windings and the second set of windings are arranged relative to each other such that the electromagnetic field generated by the first set of windings induces a current or voltage in the second set of windings;
wherein the power controller comprises:
a detector connected to the second set of windings by a second set of feeder cables;
wherein the detector is arranged to measure the voltage and/or current response of the current or voltage induced in the second set of windings;
wherein the first set of windings and the second set of windings are connected to each other via the respective ends of the first set of feeder cables and the second set of feeder cables that are proximal to the power controller.

9 more elements

Dependencies are inferred from the claim text.

Facts

Application: 18/342,299Filed 27 Jun 2023
Priority: EP 2218543118 Jul 2022
Published: US 2024/0022143 A118 Jan 2024
Granted: 16 Dec 2025
Term ends: Not estimatedThe source records don’t support an estimate.

Classification10 codes

H02K 11/33
Structural association with control circuits or drive circuits: drive circuits, e.g. power electronics
H02P 9/007
Arrangements for controlling electric generators for the purpose of obtaining a desired output: control circuits for doubly fed generators
G01R 31/346
Testing dynamo-electric machines: testing of armature or field windings
H02K 3/28
Windings characterised by the conductor shape, form or construction, e.g. with bar conductors: layout of windings or of connections between windings