公开(公告)号：US11611289B2

公开(公告)日：2023-03-21

申请号：US17378941

申请日：2021-07-19

Applicant: VIRGINIA TECH INTELLECTUAL PROPERTIES, INC.

Inventor： Jian Liu ,  Dong Dong ,  Rolando Burgos

IPC: H02M7/483 ,  H02M1/00

Abstract: Aspects are described for hybrid modular multilevel converters that include half-bridge submodules. In some embodiments, a hybrid modular multilevel converter can include a direct current (DC) bus and an alternating current (AC) node. A first arm of the hybrid modular multilevel converter includes a first submodule chain link and a first arm inductor and a second arm includes a second submodule chain link and a second arm inductor. A capacitor connects between a first side of the first arm and a first side of the second arm.

公开(公告)号：US20230026670A1

公开(公告)日：2023-01-26

申请号：US17378941

申请日：2021-07-19

Applicant: VIRGINIA TECH INTELLECTUAL PROPERTIES, INC.

Inventor： Jian Liu ,  Dong Dong ,  Rolando Burgos

IPC: H02M7/483 ,  H02M1/00 ,  H02J3/36

Abstract: Aspects are described for hybrid modular multilevel converters that include half-bridge submodules. In some embodiments, a hybrid modular multilevel converter can include a direct current (DC) bus and an alternating current (AC) node. A first arm of the hybrid modular multilevel converter includes a first submodule chain link and a first arm inductor and a second arm includes a second submodule chain link and a second arm inductor. A capacitor connects between a first side of the first arm and a first side of the second arm.

公开(公告)号：US11515807B1

公开(公告)日：2022-11-29

申请号：US17477678

申请日：2021-09-17

Applicant: VIRGINIA TECH INTELLECTUAL PROPERTIES, INC.

Inventor： Jian Liu ,  Dong Dong

IPC: H02M7/42 ,  H02M7/483 ,  H02M7/5387

Abstract: Aspects are described for line frequency commutated voltage source converters for multiphase modular multilevel converters. A voltage source converter (VSC) capacitor voltage of a multiphase VSC of a multiphase power converter can be identified. The multiphase VSC can include a half-bridge circuit for each phase of the multiphase power converter. A circuit parameter can be identified and utilized to determine an arm voltage of an arm of a branch of the multiphase converter. Switch control signals can be generated to insert or bypass the VSC capacitor for the arm of the branch of the multiphase converter device, based at least in part on a comparison between the arm voltage and the VSC capacitor voltage.