September 20, 2022: U.S. Patent No. 11,451,139 "Three-Phase Single-Stage Soft-Switching AC-DC Converter with Power Factor Correction"

Queen’s Partnerships and Innovation is pleased to report the issuance of U.S. Patent No. 11,451,139 entitled, "Three-Phase Single-Stage Soft-Switching AC-DC Converter with Power Factor Correction," on September 20, 2022 to Mojtaba Forouszesh, Yan-Fei Liu, and Xiang Zhou. The patent relates to high power factor, single stage power conversion, and soft switching of all switches, resulting in high conversion efficiency in a cost-effective single-stage three-phase structure. The converters have low output voltage ripple without a double line frequency component, which allows non-electrolytic capacitor implementation.

U.S. Patent No. 11,451,139 (PDF, 1.1 MB)