US Patent Issued to TMEIC on May 13 for "Power conversion device and method of diagnosing failures of switching devices" (Japanese Inventors)

ALEXANDRIA, Va., June 12 -- United States Patent no. 12,301,130, issued on May 13, was assigned to TMEIC Corp. (Chuo-ku, Japan).

"Power conversion device and method of diagnosing failures of switching devices" was invented by Kouki Morisaki (Tokyo) and Haiqing Li (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "A power conversion device with a three-level TNPP circuit, includes: a voltage detection unit; a test pulse output unit that outputs a test pulse to an inner switching device connected in a forward direction from the DC neutral point to an AC output terminal when the voltages detected by the voltage detection unit rise and exceed a predetermined threshold; and a determination unit that determines...