System for monitoring a supply line of an electrical machine fed from a frequency converter
US12385964B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 13, 2022 |
| Grant date | Aug 12, 2025 |
| Priority date | — |
| Expiry date | Aug 22, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F21/56
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A device for monitoring a supply line of a frequency converter-fed electrical machine is used to predict failure, wear and/or ageing of the electrical supply line. The electrical supply line is designed and installed to connect an electrical machine in an industrial machine or plant or in a land or aircraft vehicle to a frequency converter. The frequency converter is designed and intended to supply the electrical machine with a single-phase or multi-phase alternating voltage with preferably variable voltage amplitude and pulse duration through the electrical supply line, wherein a change in pulse duration and/or voltage amplitude of the alternating voltage serves to change a speed or torque of the electrical machine. The frequency converter is set up and intended to provide each phase of the AC voltage as a sequence of square-wave pulses with a high edge steepness for feeding the electrical machine.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.