ALEXANDRIA, Va., Dec. 2 -- United States Patent no. 12,489,377, issued on Dec. 2, was assigned to ABB SCHWEIZ AG (Baden, Switzerland).
"System and method for zero-voltage detection in resonant pole inverters" was invented by Eddy Aeloiza (Richmond, Va.), Weiqiang Chen (Richmond, Va.) and Goran Mandic (Henrico, Va.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A zero voltage detection device may include a voltage divider that scales down a first voltage to a second voltage, a comparator that compare the second voltage to one or more voltage thresholds and outputs a first set of signals indicative of an estimation of the first voltage approaching a zero-voltage instant, the one or more voltage thresholds conf...