ALEXANDRIA, Va., June 9 -- United States Patent no. 12,289,064, issued on April 29, was assigned to Sparq Systems Inc. (Kingston, Canada).

"Differential geometry based DC/AC inverters" was invented by Majid Pahlevaninezhad (Kingston, Canada) and Praveen Jain (Kingston, Canada).

According to the abstract* released by the U.S. Patent & Trademark Office: "A DC/AC inverter and microinverter architectures using the DC/AC inverter are disclosed. The DC/AC inverter is based on a differential geometry control scheme to balance and optimize the flying capacitor voltages across the flying capacitors used in the inverter's power circuit. Based on changing inverter and overall system conditions, including capacitor voltages, grid voltages, grid curre...