-
公开(公告)号：US11594953B1
公开(公告)日：2023-02-28
申请号：US17506790
申请日：2021-10-21
Applicant: General Electric Company
Abstract: A method for operating a multi-level bridge power converter of an electrical power system connected to a power grid includes providing a plurality of switching devices of the power converter in one of a neutral point clamped topology or an active neutral point clamped topology, the plurality of switching devices including a first group and a second group of switching devices. The method also includes providing a multi-state deadtime for the first and second groups of switching devices that changes based on different state transitions of the power converter. Further, the method includes operating the first and second groups of switching devices according to the multi-state deadtime to allow the first group to switch differently than the second group during the different state transitions, thereby decreasing voltage overshoots on the first group during one or more of the different state transitions and providing safe transition between commutation states of the power converter.
-
公开(公告)号：US11552575B1
公开(公告)日：2023-01-10
申请号：US17405311
申请日：2021-08-18
Applicant: General Electric Company
Inventor： Nathaniel Robert Michener , Fernando Arturo Ramirez Sanchez , Steven Wade Sutherland , Robert Gregory Wagoner , Rajesh Bhupathi , Igor Berroteran
Abstract: A method for operating a multi-level bridge power converter includes providing a plurality of switching devices of the power converter in one of a neutral point clamped topology or an active neutral point clamped topology. The method also includes providing a plurality of deadtimes for the switching devices. Further, the method includes selecting one of the deadtimes for each of the switching devices such that at least two of the switching devices operate according to different deadtimes. Moreover, the method includes operating the switching devices at the selected deadtimes to allow a first group of the switching devices to switch slower than a second group of the switching devices such that the first group of the switching devices satisfy safe operating requirements while the second group of the switching devices switch faster than the first group.
-
3.发明公开公开(公告)号：US20230344332A1
公开(公告)日：2023-10-26
申请号：US17725683
申请日：2022-04-21
Applicant: General Electric Company
Inventor： Nathaniel Robert Michener , Robert Gregory Wagoner
CPC classification number: H02M1/32 , H02M1/084 , H02M5/4585 , H02J3/0012
Abstract: A method for operating a multi-level bridge power converter of an electrical power system connected to a power grid includes receiving a commanded state for one or more switching devices thereof. The method also includes receiving a gate-emitter voltage of one or more of the switching devices. Further, the method includes comparing, via at least one comparator, the gate-emitter voltage of the one or more switching devices to a reference voltage range corresponding to the commanded state of the one or more switching devices. In addition, the method includes determining an actual state of the one or more switching devices based on the comparison. Thus, the method also includes implementing a control action based on the actual state of the one or more switching devices.
-
Patent Agency Ranking
公开(公告)号：US20220060123A1
公开(公告)日：2022-02-24
申请号：US17000435
申请日：2020-08-24
Applicant: General Electric Company
Inventor： Bacil Shaqqo , Fernando Arturo Ramirez Sanchez , Nathaniel Robert Michener , Steven Wade Sutherland
Abstract: A method for operating a multi-level bridge power converter of an electrical power system connected to a power grid includes receiving, via a controller of the power converter, an indication of a transient event occurring in the power grid or the electrical power system. The power converter has a plurality of switching devices arranged in an active neutral point clamped topology. Accordingly, upon receiving the indication, the method includes activating a crowbar algorithm programmed in the controller of the power converter to bifurcate a current received by the power converter into a plurality of different current paths defined by the plurality of switching devices.
-
公开(公告)号：US11843325B2
公开(公告)日：2023-12-12
申请号：US17000435
申请日：2020-08-24
Applicant: General Electric Company
Inventor： Bacil Shaqqo , Fernando Arturo Ramirez Sanchez , Nathaniel Robert Michener , Steven Wade Sutherland
IPC: H02M7/487 , F03D9/25 , H02P9/00 , H02P9/10 , H02P101/15
CPC classification number: H02M7/487 , F03D9/255 , H02P9/007 , H02P9/102 , H02P2101/15
Abstract: A method for operating a multi-level bridge power converter of an electrical power system connected to a power grid includes receiving, via a controller of the power converter, an indication of a transient event occurring in the power grid or the electrical power system. The power converter has a plurality of switching devices arranged in an active neutral point clamped topology. Accordingly, upon receiving the indication, the method includes activating a crowbar algorithm programmed in the controller of the power converter to bifurcate a current received by the power converter into a plurality of different current paths defined by the plurality of switching devices.
-
公开(公告)号：US12113433B2
公开(公告)日：2024-10-08
申请号：US17725683
申请日：2022-04-21
Applicant: General Electric Company
Inventor： Nathaniel Robert Michener , Robert Gregory Wagoner
CPC classification number: H02M1/32 , H02J3/0012 , H02M1/084 , H02M5/4585
Abstract: A method for operating a multi-level bridge power converter of an electrical power system connected to a power grid includes receiving a commanded state for one or more switching devices thereof. The method also includes receiving a gate-emitter voltage of one or more of the switching devices. Further, the method includes comparing, via at least one comparator, the gate-emitter voltage of the one or more switching devices to a reference voltage range corresponding to the commanded state of the one or more switching devices. In addition, the method includes determining an actual state of the one or more switching devices based on the comparison. Thus, the method also includes implementing a control action based on the actual state of the one or more switching devices.
-
公开(公告)号：US11909302B2
公开(公告)日：2024-02-20
申请号：US17199848
申请日：2021-03-12
Applicant: General Electric Company
CPC classification number: H02M1/08 , H02M5/4585 , H02M7/487 , H02P9/007
Abstract: A method for operating a multi-level bridge power converter of an electrical power system connected to a power grid includes providing a plurality of switching devices of the power converter in an active neutral point clamped topology. The method also includes operating the plurality of switching devices in a plurality of operating states such that current simultaneously flows through at least two parallel recovery paths of the plurality of switching devices during operation of the power converter to minimize a commutation path of the current when at least one diode of the plurality of switching devices recovers, thereby reducing parasitic inductance affecting the recovering antiparallel diode or the switch.
-
公开(公告)号：US20220294333A1
公开(公告)日：2022-09-15
申请号：US17199848
申请日：2021-03-12
Applicant: General Electric Company
Abstract: A method for operating a multi-level bridge power converter of an electrical power system connected to a power grid includes providing a plurality of switching devices of the power converter in an active neutral point clamped topology. The method also includes operating the plurality of switching devices in a plurality of operating states such that current simultaneously flows through at least two parallel recovery paths of the plurality of switching devices during operation of the power converter to minimize a commutation path of the current when at least one diode of the plurality of switching devices recovers, thereby reducing parasitic inductance affecting the recovering antiparallel diode or the switch.
-
-
-
-
-
-
-
Search Results
8
records
(took 0.017 seconds)
