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公开(公告)号：US09837922B2
公开(公告)日：2017-12-05
申请号：US15337918
申请日：2016-10-28
Applicant: ABB Technology Oy
Inventor： Matthias Lüscher , Juerg Rauchenstein , Christian Stulz
CPC classification number: H02M5/42 , H02M1/32 , H02M5/4585 , H02M7/487 , H02M2001/322
Abstract: A method is disclosed in one embodiment for discharging DC link capacitors. In one form the method includes switching a first half bridge of a first converter unit to a positive state, in which its AC output is connected with its positive DC output, and simultaneously switching a second half bridge of a second converter unit to a negative state, in which its AC output is connected with its negative DC output, such that a DC link capacitor of the first converter unit and a DC link capacitor of the second converter unit are interconnected oppositely to each other and discharged via the electrical filter.
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公开(公告)号：US20170047856A1
公开(公告)日：2017-02-16
申请号：US15337918
申请日：2016-10-28
Applicant: ABB Technology Oy
Inventor： Matthias Lüscher , Juerg Rauchenstein , Christian Stulz
IPC: H02M5/42
CPC classification number: H02M5/42 , H02M1/32 , H02M5/4585 , H02M7/487 , H02M2001/322
Abstract: A method is disclosed in one embodiment for discharging DC link capacitors. In one form the method includes switching a first half bridge of a first converter unit to a positive state, in which its AC output is connected with its positive DC output, and simultaneously switching a second half bridge of a second converter unit to a negative state, in which its AC output is connected with its negative DC output, such that a DC ink capacitor of the first converter unit and a DC link capacitor of the second converter unit are interconnected oppositely to each other arid discharged via the electrical filter.
Abstract translation: 在用于放电DC链路电容器的一个实施例中公开了一种方法。 在一种形式中，该方法包括将第一转换器单元的第一半桥切换到正状态，其中其输出与其正的直流输出连接，同时将第二转换器单元的第二半桥切换到负状态 其中其AC输出与其负DC输出连接，使得第一转换器单元的直流墨水电容器和第二转换器单元的直流链路电容器互相相互相互连接，并通过电过滤器放电。
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公开(公告)号：US09882503B2
公开(公告)日：2018-01-30
申请号：US15443365
申请日：2017-02-27
Applicant: ABB Technology Oy
Inventor： Juerg Rauchenstein , Kefas Damazio-Coelho , Matthias Lüscher
CPC classification number: H02M5/44 , H02M7/483 , H02M7/487 , H02M2007/4835
Abstract: A converter system comprises two phase modules, each phase module comprising a first converter leg and a second converter leg interconnected with a DC link, and a charging transformer for charging the DC link. The DC link comprises two capacitors connected in series between a positive point, a middle point and a negative point, each converter leg adapted for interconnecting an output with the positive point, the middle point or the negative point of the DC link. The phase modules are connected in series via outputs of the converter legs, such that a second converter leg of a lower phase module is connected with a first converter leg of a higher phase module. The charging transformer is connected to the middle point of the DC link of a highest phase module, which provides a phase output of the converter system with an output of a second converter leg. The converter system includes two converter phases, each converter phase comprising at least two series connected phase modules. At a star point of the converter phases the converter phases are star-connected via outputs of first converter legs of lowest converter modules, which are series connected with higher converter modules, whereby a module side start point of the charging transformer is connected or is not connected with the star point of the converter phases.
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公开(公告)号：US20170170742A1
公开(公告)日：2017-06-15
申请号：US15443365
申请日：2017-02-27
Applicant: ABB Technology Oy
Inventor： Juerg Rauchenstein , Kefas Damazio-Coelho , Matthias Lüscher
IPC: H02M5/44
CPC classification number: H02M5/44 , H02M7/483 , H02M7/487 , H02M2007/4835
Abstract: A converter system comprises two phase modules, each phase module comprising a first converter leg and a second converter leg interconnected with a DC link, and a charging transformer for charging the DC link. The DC link comprises two capacitors connected in series between a positive point, a middle point and a negative point, each converter leg adapted for interconnecting an output with the positive point, the middle point or the negative point of the DC link. The phase modules are connected in series via outputs of the converter legs, such that a second converter leg of a lower phase module is connected with a first converter leg of a higher phase module. The charging transformer is connected to the middle point of the DC link of a highest phase module, which provides a phase output of the converter system with an output of a second converter leg. The converter system includes two converter phases, each converter phase comprising at least two series connected phase modules. At a star point of the converter phases the converter phases are star-connected via outputs of first converter legs of lowest converter modules, which are series connected with higher converter modules, whereby a module side start point of the charging transformer is connected or is not connected with the star point of the converter phases.
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