Predicting zero-crossings for point-on-wave (POW) switching techniques

A non-transitory, computer-readable storage medium, comprising instructions that, when executed by one or more processors, cause the one or more processors to perform operations comprising:

• receiving a command to move one or more armatures of a switching device from a first position to a second position, wherein the first position of the one or more armatures electrically couples a first contact to a second contact and the second position of the one or more armatures electrically uncouples the first contact from the second contact;
• selecting a current zero-crossing point along an electric waveform as a synchronization point, wherein the electric waveform is indicative of a change in current through the first contact and the second contact;
• determining a predicted current zero-crossing point by adding a period measurement associated with a previously detected current zero-crossing point or a previously detected line-to-line crossing point in the electric waveform to the synchronization point;
• and
• transmitting a command to the switching device to move the one or more armatures from the first position to the second position before or at the predicted current zero-crossing point.

A method, comprising:

• receiving, via one or more processors, a command to move one or more armatures of a switching device from a first position to a second position, wherein the first position of the one or more armatures electrically couples a first contact to a second contact and the second position of the one or more armatures electrically uncouples the first contact from the second contact;
• selecting, via the one or more processors, a current zero-crossing point along an electric waveform as a synchronization point, wherein the electric waveform is indicative of a change in current through the first contact and the second contact;
• determining, via the one or more processors, a predicted current zero-crossing point by adding a period measurement associated with a previously detected current zero-crossing point or a previously detected line-to-line crossing point in the electric waveform to the synchronization point;
• and
• transmitting, via the one or more processors, a command to the switching device to move the one or more armatures from the first position to the second position before or at the predicted current zero-crossing point.