Motor drive with resonance detection and impedance computation
US9960723B2 · kind B2 · utility
3Cited by
6References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 6, 2016 |
| Grant date | May 1, 2018 |
| Priority date | — |
| Expiry date | Oct 27, 2036 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B70/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Disclosed examples include power conversion systems, computer readable mediums and methods for mitigating input filter resonance, in which a controller operates an active front end (AFE) rectifier in a first mode to turn a single rectifier switching device on and off and measures a filter voltage or current signal while all of the rectifier switches are off. The controller determines a resonant frequency based on a transient response of the measured voltage or current signal, and selectively adjusts a rectifier control parameter to mitigate filter resonance based on the resonant frequency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.