Power factor correction method with zero crossing detection and adjustable stored reference voltage
US6756771B1 · kind B1 · utility
46Cited by
5References
20Claims
0Family size
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Key dates
| Filing date | Jun 20, 2003 |
| Grant date | Jun 29, 2004 |
| Priority date | — |
| Expiry date | Jun 20, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05F1/70
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A power factor correction device (26, 75) stores the output of an error amplifier (32) on a storage element (39). A zero crossing detector (37) detects the zero crossings of the AC input voltage and enables the power factor correction device (26, 75) to adjust the value of the voltage stored on the storage element (39).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.