Digital phase match discriminator for three-phase power
US5212407A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 4, 1990 |
| Grant date | May 18, 1993 |
| Priority date | — |
| Expiry date | Oct 4, 2010 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02J3/38
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The resolution of two asynchronous three-phase power sources such that an optimal phase to phase matchup may be made between them. This is achieved with a logic system that receives a data point at the zero-voltage crossings of the three waveforms from each source. The data points create distinct "states" of the three-phase waveform for each power source. There are six data points for each power source per cycle. The states of the load and source, along with information pertaining to the connection configuration of the present source of power to the load, are used to determine the optimum configuration for connecting an alternate or new source to the load based on information obtained from a lookup table.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.