US Patent Issued to DENSO on May 19 for "Abnormality detection apparatus" (Japanese Inventor)

ALEXANDRIA, Va., May 19 -- United States Patent no. 12,633,737, issued on May 19, was assigned to DENSO Corp. (Kariya-city, Japan).

"Abnormality detection apparatus" was invented by Kunihiko Matsuda (Kariya-city, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A monitoring voltage output unit outputs a monitoring voltage that has a positive correlation with the current flowing through a shunt resistor connected in series with an upper arm element and a lower arm element of each phase. A monitoring circuit monitors an inverter overcurrent abnormality due to an upper arm element or a lower arm element of one or more phases being stuck in an ON state based on the monitoring voltage. A comparator of the mon...