US Patent Issued to Drexel University, Lehigh University on May 13 for "Active snubbers for solid state circuit breakers to improve switch voltage utilization rate" (Pennsylvania Inventors)

ALEXANDRIA, Va., June 12 -- United States Patent no. 12,300,990, issued on May 13, was assigned to Drexel University (Philadelphia) and Lehigh University (Bethlehem, Pa.).

"Active snubbers for solid state circuit breakers to improve switch voltage utilization rate" was invented by Fei Lu (Wynnewood, Pa.), Hua Zhang (Philadelphia) and Reza Kheirollahi (Philadelphia).

According to the abstract* released by the U.S. Patent & Trademark Office: "There may be two active snubbers for direct current (dc) solid-state circuit breakers (SSCBs): metal-oxide-varistor with resistor-capacitor-switch (MOV-RCS) and active-MOV with resistor-capacitor-diode (AMOV-RCD). In the snubber branch, either half- or full-controlled switch can be used, leading to fou...