公开(公告)号：US12003169B2

公开(公告)日：2024-06-04

申请号：US18061932

申请日：2022-12-05

Applicant: General Electric Technology GmbH

Inventor： Patrick Horton ,  Colin Chamock Davidson ,  Adrian Keitley ,  Mikel Olalquiaga San Emeterio

IPC: H02M7/483 ,  H02M1/00 ,  H02M7/25

CPC classification number: H02M1/007 ,  H02M1/0006 ,  H02M7/25 ,  H02M7/4835

Abstract: In the field of chain-link modules for voltage source converters, there is a need for an improved chain-link module. A chain-link module, for connection in series with other chain-link modules to form a chain-link converter selectively operable to provide a stepped variable voltage source within a voltage source converter, includes at least one pair of series-connected switching elements that are connected in parallel with a number of series-connected energy storage devices. Each energy storage device has an auxiliary power supply unit connected in parallel therewith to source energy therefrom for supply to an auxiliary chain-link module control circuit. The chain-link module also includes a modulation controller which is interconnected between each auxiliary power supply unit and the auxiliary chain-link module control circuit. The modulation controller is configured to modulate the proportion of energy supplied to the auxiliary chain-link module control circuit by each auxiliary power supply unit.