US Patent Issued to Panasonic Intellectual Property Management on March 18 for "Power conversion device" (Japanese Inventors)

ALEXANDRIA, Va., March 19 -- United States Patent no. 12,255,538, issued on March 18, was assigned to Panasonic Intellectual Property Management Co. Ltd. (Osaka, Japan).

"Power conversion device" was invented by Shogo Hirota (Osaka, Japan), Kenji Hanamura (Osaka, Japan) and Takashi Shirakawa (Osaka, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "For power transfer from a first DC part to a second DC part in a dual active bridge (DAB) converter by stepping down a voltage, a first bridge circuit includes a period in which the first DC part and a primary winding of an insulated transformer conduct and a period in which ends of a primary winding of the insulated transformer are short-circuited in the first...