-
公开(公告)号：US20230283197A1
公开(公告)日：2023-09-07
申请号：US18005701
申请日：2020-07-17
发明人： Ilhom Gafur , Dominik Schuster
CPC分类号： H02M7/4835 , H02M1/084
摘要： A method for controlling a modular multilevel power converter which has at least one phase module branch with a series circuit of modules. Each of the modules has an energy storage device and a power semiconductor circuit with electronic switching elements. A duty cycle of the phase module branch is ascertained, wherein the duty cycle describes the ratio between the voltage which is being output by the phase module branch and the voltage which can be maximally output by the phase module branch. The maximum value of the duty cycle during a preselected time period is ascertained, and the maximum value of the duty cycle is controlled to a target value for the maximum value of the duty cycle by a controller.
-
公开(公告)号：US11424618B2
公开(公告)日：2022-08-23
申请号：US17600924
申请日：2020-03-17
发明人： Martin Pieschel , Dominik Schuster
摘要： A converter has a plurality of partial converters, each partial converter having three-phase converter-side supply connections for parallel connection to the same electrical three-phase supply system and three-phase converter-side output connections with a star point for making contact with a star point of a three-phase output system. The converter-side output connections of the three-phase partial converters are connected in parallel. The partial converters each have a converter module for each partial converter-side three-phase supply connection, and the converter modules each have two or more submodules having their outputs connected in series, and a transformer.
-
公开(公告)号：US10333386B2
公开(公告)日：2019-06-25
申请号：US15306138
申请日：2014-04-25
发明人： Ronny Ermisch , Nizar Lassoued , Dominik Schuster
IPC分类号： H02M1/32 , H02M7/217 , G01R19/165 , H02H7/125 , H02M7/483
摘要： A method detects a working voltage collapse by use of an electric component, in which the exceeding of a critical characteristic of the working voltage is monitored and an excess is detected as a collapse. Accordingly, in order to recognize the collapse breakdown in a simple trouble-free manner, a model voltage generated by a model circuit is used as the critical characteristic.
-
4.发明授权公开(公告)号：US10199922B2
公开(公告)日：2019-02-05
申请号：US15323328
申请日：2014-07-01
IPC分类号： H02M1/32 , H02M7/5395 , H02M7/483 , H02M1/00
摘要： A sub-module of a modular braking unit that is connected to a DC transmission network. Each sub-module has an inverse diode, and a storage capacitor connected in parallel with the inverse diode via a free-wheeling diode. An energy-consuming switching unit is connected to the storage capacitor. In order to provide a sub-module of this type such that the braking unit can function with relatively low losses in the stand-by and idle state, the sub-module is provided with an actively switchable semiconductor bypass path in parallel with the inverse diode. A braking unit has a plurality of series-connected sub-modules and we disclose a method for operating a braking unit of this type.
-
-
-
搜索结果
4 条记录 (耗时 0.013 秒)
