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公开(公告)号：US20190173393A1
公开(公告)日：2019-06-06
申请号：US16325957
申请日：2017-08-08
Applicant: General Electric Technology GmbH
Inventor： Francisco Javier Chivite Zabalza , David Reginald Trainer , John Lewis Outram , Colin Donald Murray Oates , Colin Chamock Davidson
IPC: H02M7/483 , H02M1/34 , H03K17/0814 , H03K17/10
Abstract: This application describes methods and apparatus for achieving voltage balancing of clamp capacitors of director switch units of a voltage source converter (VSC). An arm or director switch may be formed from a number of director switch units connected in series, each director switch unit having a semiconductor switching element such as an IGBT. Typically a clamp capacitor may be connected across the IGBT. In some arrangements a floating power supply may draw power from the clamp capacitor to provide power for the director switch unit. In the present application the director switch unit is operable in a voltage balancing mode such that the power drawn from the clamp capacitor varies based on the voltage across the clamp capacitor. In this way the power demand for power drawn from the clamp capacitor may have the characteristic of a resistive load.
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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
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.
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公开(公告)号：US20160164296A1
公开(公告)日：2016-06-09
申请号：US14907242
申请日：2014-06-13
Applicant: GENERAL ELECTRIC TECHNOLOGY GMBH
Inventor： Robert Stephen Whitehouse , Colin Chamock Davidson
Abstract: A module for use in a voltage source converter includes: first and second terminals; an energy storage device; at least one switching element to switch the energy storage device into or out of circuit with the terminals to selectively provide a voltage source; and a voltage-limiting component and/or a resistive element. The switching element(s) are switchable to selectively form a current path that passes through the voltage-limiting component and/or the resistive element and are further switchable to selectively switch the energy storage device into or out of circuit with the voltage-limiting component and/or the resistive element. The module includes electrical blocks including first and second pairs of electrical blocks connected in parallel with the energy storage device in a full-bridge arrangement. Each of the electrical blocks include a switching element, and one of the electrical blocks includes the voltage-limiting component and/or the resistive element.
Abstract translation: 一种用于电压源转换器的模块，包括：第一和第二端子; 能量储存装置; 至少一个开关元件，用于将所述能量存储装置与所述端子切换到电路中以选择性地提供电压源; 以及电压限制部件和/或电阻元件。 开关元件可切换以选择性地形成通过限压部件和/或电阻元件的电流路径，并且可进一步切换以便将电能存储装置选择性地切换到电压限制部件 和/或电阻元件。 该模块包括电气块，其包括以全桥布置与电能存储装置并联连接的第一和第二对电气块。 每个电气块包括开关元件，并且电气块中的一个包括电压限制部件和/或电阻元件。
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