US Patent Issued to HITACHI MITSUBISHI HYDRO on April 29 for "Method of controlling power generation apparatus and pumped storage power generation apparatus" (Japanese Inventor)

ALEXANDRIA, Va., June 9 -- United States Patent no. 12,289,076, issued on April 29, was assigned to HITACHI MITSUBISHI HYDRO Corp. (Tokyo).

"Method of controlling power generation apparatus and pumped storage power generation apparatus" was invented by Masahiro Yoshida (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method of controlling a power generation apparatus and a pumped storage power generation apparatus including a motor directly connected to a rotor of a generator or generator motor, the method performing speed control by providing a guide vane opening degree command to the motor, the guide vane opening degree command being calculated by a rotational speed controller including a proportion...