公开(公告)号：US10291109B2

公开(公告)日：2019-05-14

申请号：US15868486

申请日：2018-01-11

Applicant: Virginia Tech Intellectual Properties, Inc.

Inventor： Zhengrong Huang ,  Zhengyang Liu ,  Fred C. Lee ,  Qiang Li ,  Furong Xiao

IPC: H02M1/12 ,  H02M7/21 ,  H02M7/797 ,  H02M7/5387 ,  H02M1/08 ,  H02M7/219 ,  H02M1/00

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).

公开(公告)号：US20180205306A1

公开(公告)日：2018-07-19

申请号：US15868486

申请日：2018-01-11

Applicant: Virginia Tech Intellectual Properties, Inc.

Inventor： Zhengrong Huang ,  Zhengyang Liu ,  Fred C. Lee ,  Qiang Li ,  Furong Xiao

IPC: H02M1/08 ,  H02M7/797 ,  H02M1/12

CPC classification number: H02M1/083 ,  H02M1/126 ,  H02M7/219 ,  H02M7/797 ,  H02M2001/0058 ,  Y02B70/1491

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).