Power waveform harmonic analysis using summed samples
US7502237B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 7, 2007 |
| Grant date | Mar 10, 2009 |
| Priority date | — |
| Expiry date | Oct 16, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R23/20
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Provided are methods and apparatus for characterizing a power waveform. Some such methods include sampling the power waveform to generate a plurality of samples and, for each of the samples, recursively processing the sample to generate an aggregate signal energy value, processing the sample to generate a harmonic component signal energy value associated with at least one target harmonic frequency, and accumulating the aggregate signal energy value and the component signal energy value with previously generated aggregate signal energy values and component signal energy values to generate an accumulated aggregate signal energy value and an accumulated harmonic component signal energy value. Methods also include characterizing the power waveform responsive to the accumulated aggregate signal energy value and the accumulated harmonic component signal energy value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.