RESEARCH
CPES Patent Information
US Patent: 10291109
Critical-Mode-Based Soft-Switching Techniques for Three-Phase Bi-Directional AC/DC Converters
Zhengrong Huang, Zhengyang Liu, Fred C. Lee, Qiang Li, Furong Xiao
Issued: May 14, 2019
Abstract:
Critical-mode soft-switching techniques for a power converter are described. In one example, a power converter includes a converter electrically coupled between an alternating current (AC) power system and a direct current (DC) power system, where the converter includes a number of phase legs. The power converter can also include a control system configured, during a portion of a whole line cycle of the AC power system, to clamp a first phase leg of the converter from switching and operate second and third phase legs of the converter independently in either critical conduction mode (CRM) or in discontinuous conduction mode (DCM).
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