公开(公告)号：US10560014B2

公开(公告)日：2020-02-11

申请号：US16081440

申请日：2017-03-01

Applicant: General Electric Technology GmbH

Inventor： Javier Francisco Chivite-Zabalza ,  David Reginald Trainer ,  Jonathan Christopher Nicholls ,  Konstantin Vershinin ,  Ikenna Bruce Efika ,  Francisco Jose Moreno Munoz ,  John Lewis Outram ,  Rajaseker Reddy Ginnareddy

IPC: H02M1/32 ,  H02M1/34 ,  H02J3/36 ,  H02J7/34 ,  H02M7/797 ,  H02M7/49 ,  H02M7/483

Abstract: Fault protection of a voltage source converter is provided. An apparatus has a chain-link circuit in series with a director switch. The chain-link circuit includes cells including an energy storage element and cell switching elements connected with anti-parallel diodes. Each cell switching element has a cell switching element controller. The director switch includes director switch units, each having a director switching element and a director switch unit controller. Each cell switching element controller monitors for a fault current and turns-off its associated cell switching element and reports a fault event to a fault controller. Each director switch unit controller monitors for a fault current and reports a fault event to the fault controller but the director switch unit control keeps its associated director switching element turned-on. The fault controller monitors for reports of fault events to order the cell switching elements of at least some of the cells to turn-off.

公开(公告)号：US10090830B2

公开(公告)日：2018-10-02

申请号：US15549640

申请日：2016-02-11

Applicant: General Electric Technology GmbH

Inventor： Konstantin Vershinin ,  Jonathan Nicholls

IPC: H03K17/16 ,  H03K17/10 ,  H02M1/088 ,  H02M1/32 ,  H03K17/082 ,  H03K17/689 ,  H01H33/59 ,  H02M7/483 ,  H02H3/20

Abstract: An apparatus and methods of breaking a circuit using a switch are disclosed. In an example, a variable voltage is applied across a switch, which comprises a series connection of switching elements which are individually controllable between a blocking state and a conductive state. The state of the switching elements is controlled such that at least a portion of switching elements are in the blocking state, and fewer switching elements are in the blocking state when the applied voltage magnitude is low than when the applied voltage magnitude is high.