US Patent Issued to TMEIC on May 5 for "Insulation diagnostic device and insulation diagnostic method" (Japanese Inventors)

ALEXANDRIA, Va., May 5 -- United States Patent no. 12,618,892, issued on May 5, was assigned to TMEIC Corp. (Tokyo).

"Insulation diagnostic device and insulation diagnostic method" was invented by Kazuhei Hirao (Tokyo), Yasuhiro Hada (Tokyo) and Masaki Miyazaki (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "An insulation diagnostic device according to an embodiment performs an insulation diagnosis of a three-phase AC motor on the basis of a U-phase current, a V-phase current, and a W-phase current supplied to the three-phase AC motor, and includes: a current vector calculation module that calculates at least one of a zero sequence current vector or a negative sequence current vector on the basis of th...