ALEXANDRIA, Va., Nov. 18 -- United States Patent no. 12,476,455, issued on Nov. 18, was assigned to Huawei Digital Power Technologies Co. Ltd. (Shenzhen, China).

"Bipolar photovoltaic system, power supply system, and redundancy protection method" was invented by Zhiwu Xu (Shenzhen, China), Hongmiao Fang (Shanghai), Yanzhong Zhang (Shenzhen, China), Changshuan Sun (Shanghai) and Tiansan Lin (Shenzhen, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "A power supply system including three output ends of a power converter respectively connected to a first end of a positive/negative direct current bus and a first end of a neutral bus; two input ends of a first inverter respectively connected to a second end o...