International Business Machines Corporation

Dianne E Gaddis

Forrest K Smith

Kirk J Treubert

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.

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Manassas, VA, United States of America

Dianne E Gaddis