Methods and apparatus for detecting aging and predicting failures in BLDC and PMSM motors
US11940776B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 8, 2022 |
| Grant date | Mar 26, 2024 |
| Priority date | — |
| Expiry date | Jul 8, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05B2219/41329
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A system is provided that predicts motor wear and failures before they occur. Telemetry data from motors in a motor application is collected and predictive algorithms are used to determine when a motor is aging and when it may fail. Identifying a potential failure in these types of applications can help mitigate risk of other equipment failures and realize cost savings. In one example, a motor aging detection system is provided that includes one or more DC motors, and a motor controller coupled to each motor. The motor controller reads three phase currents from each motor and converts the phase currents to digital values, calculates telemetry data including applied voltages, back electric-motive force, inductance, and resistance of each motor at periodic intervals, stores this telemetry data for each motor in a memory. An age detection circuit retrieves this information from the memory and determines age factors of the motor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.