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公开(公告)号：US08916985B2
公开(公告)日：2014-12-23
申请号：US13850340
申请日：2013-03-26
发明人： Joerg Oesterheld , Juergen Hoffmann
CPC分类号： H02P9/08 , F01D19/00 , F02C7/26 , F02C9/18 , F05D2220/764 , F05D2260/85 , F05D2270/061
摘要： A method for the start of a power plant installation which includes a gas turbine, a generator coupled to the gas turbine, and a frequency converter to feed current into an electrical grid. In accordance with the method, during the start of the gas turbine, the generator is connected to the electrical grid via the frequency converter before the operating rotational speed of the gas turbine is reached, wherein the frequency converter is controlled such that it generates an output current with the grid frequency. A power plant installation can execute the above method.
摘要翻译： 一种用于启动发电厂安装的方法，其包括燃气轮机，连接到燃气轮机的发电机和用于将电流馈入电网的变频器。 根据该方法，在燃气轮机起动期间，在达到燃气轮机的操作转速之前，发电机通过变频器连接到电网，其中变频器被控制成使其产生输出 电流与电网频率。 电厂安装可以执行上述方法。
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公开(公告)号：US08976555B2
公开(公告)日：2015-03-10
申请号：US13705631
申请日：2012-12-05
摘要： A converter has converting groups with a first stage connected to input lines thereof and a second stage connected to output lines. The first and second stages have positive and negative branches that are connected together.
摘要翻译： A转换器具有连接到其输入线的第一级的转换组和连接到输出线的第二级。 第一和第二阶段具有连接在一起的正分支和负分支。
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公开(公告)号：US20130194849A1
公开(公告)日：2013-08-01
申请号：US13752990
申请日：2013-01-29
摘要： The converter includes a plurality of input lines and one or more output lines. Each input line is connected to a group of supply circuits and the supply circuits of each group are connected to different output lines. The electric generator comprises a stator and a rotor. The stator has a plurality of windings. Each winding has a plurality of phases. Each phase comprises bars connected in series. The phases have a first connection at one end, a second connection at the other end and a third connection in an intermediate position between the first and the second connection.
摘要翻译： 转换器包括多个输入线和一个或多个输出线。 每个输入线连接到一组电源电路，并且每组的电源电路连接到不同的输出线。 发电机包括定子和转子。 定子具有多个绕组。 每个绕组具有多个相。 每相包括串联连接的条。 相在一端具有第一连接，在另一端具有第二连接，在第一和第二连接之间的中间位置具有第三连接。
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公开(公告)号：US10020764B2
公开(公告)日：2018-07-10
申请号：US14868546
申请日：2015-09-29
发明人： Joerg Oesterheld , Luca Alberti , Giovanni Cataldi
摘要： The present disclosure relates to a system to compensate for mechanical forces on a rotating rotor of an electric machine, to a method for compensating mechanical forces on a rotating rotor of an electric machine, and to a use of a corresponding system. Disclosed is a system for compensating torsions at a rotating rotor. The system includes at least one measuring device for measuring specific properties of the rotor, an analyzer unit for analyzing the measurement data of the measuring device, a compensation means for compensating the torsions at the rotor, the compensation means comprise a power supply unit generating a signal adapted in amplitude and frequency to the measured properties of the rotor, and to apply the generated signal to the rotor, and the power supply unit is a frequency converter.
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公开(公告)号：US09316160B2
公开(公告)日：2016-04-19
申请号：US14024781
申请日：2013-09-12
发明人： Kevin Chan , Hongtao Li , Joerg Oesterheld
CPC分类号： F02C9/16 , F02C9/00 , F02C9/28 , F05D2270/053 , F05D2270/061 , F05D2270/091 , H02J3/24
摘要： The invention relates to a method for operating a thermal power plant, which includes a gas turbine and a generator driven directly by the gas turbine by means of a shaft and being connected to an electrical grid having a grid frequency (FG) via an electronic decoupling apparatus and a step-up transformer. A synthetic inertia response is achieved by said method includes the steps of: sensing said grid frequency (FG); detecting if in case of an excursion of said grid frequency (FG) additional inertial power is required or not; if inertial power is required, calculating the magnitude and duration of the additional inertial power; and releasing additional inertial power to said electrical grid in accordance with said calculations via said electronic decoupling apparatus.
摘要翻译： 本发明涉及一种用于操作火力发电厂的方法，其包括燃气轮机和通过轴直接由燃气涡轮驱动的发电机，并通过电子去耦连接到具有电网频率（FG）的电网 装置和升压变压器。 通过所述方法实现合成惯性响应，包括以下步骤：感测所述电网频率（FG）; 检测在所述电网频率（FG）的偏移的情况下是否需要额外的惯性功率; 如果需要惯性功率，则计算附加惯性功率的大小和持续时间; 并且根据经由所述电子去耦装置的所述计算，向所述电网释放额外的惯性功率。
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公开(公告)号：US20130249213A1
公开(公告)日：2013-09-26
申请号：US13850340
申请日：2013-03-26
发明人： Joerg Oesterheld , Juergen Hoffmann
IPC分类号： H02P9/08
CPC分类号： H02P9/08 , F01D19/00 , F02C7/26 , F02C9/18 , F05D2220/764 , F05D2260/85 , F05D2270/061
摘要： The invention relates to a method for the start of a power plant installation (10), which comprises a gas turbine (2), a generator (18) coupled to the gas turbine (2), and a frequency converter (27) to feed current into an electrical grid (1). In accordance with the method, during the start of the gas turbine (2), the generator (18) is connected to the electrical grid (1) via the frequency converter (27) before the operating rotational speed of the gas turbine (2) is reached, wherein the frequency converter (27) is controlled such that it generates an output current with the grid frequency. The invention further relates to a power plant installation (10) for the execution of such a method.
摘要翻译： 本发明涉及一种用于启动发电厂安装（10）的方法，其包括燃气轮机（2），联接到燃气轮机（2）的发电机（18）和用于馈送 电流进入电网（1）。 根据该方法，在燃气轮机（2）启动期间，在燃气轮机（2）的操作转速之前，发电机（18）经由变频器（27）连接到电网（1） ，其中所述变频器（27）被控制成使得其产生具有所述电网频率的输出电流。 本发明还涉及一种用于执行这种方法的发电厂安装（10）。
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公开(公告)号：US20130148395A1
公开(公告)日：2013-06-13
申请号：US13705631
申请日：2012-12-05
IPC分类号： H02M7/48
摘要： A converter has converting groups with a first stage connected to input lines thereof and a second stage connected to output lines. The first and second stages have positive and negative branches that are connected together.
摘要翻译： A转换器具有连接到其输入线的第一级的转换组和连接到输出线的第二级。 第一和第二阶段具有连接在一起的正分支和负分支。
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公开(公告)号：US20140069104A1
公开(公告)日：2014-03-13
申请号：US14024781
申请日：2013-09-12
发明人： Kevin Chan , Hongtao Li , Joerg Oesterheld
IPC分类号： F02C9/16
CPC分类号： F02C9/16 , F02C9/00 , F02C9/28 , F05D2270/053 , F05D2270/061 , F05D2270/091 , H02J3/24
摘要： The invention relates to a method for operating a thermal power plant, which includes a gas turbine and a generator driven directly by the gas turbine by means of a shaft and being connected to an electrical grid having a grid frequency (FG) via an electronic decoupling apparatus and a step-up transformer. A synthetic inertia response is achieved by said method includes the steps of: sensing said grid frequency (FG); detecting if in case of an excursion of said grid frequency (FG) additional inertial power is required or not; if inertial power is required, calculating the magnitude and duration of the additional inertial power; and releasing additional inertial power to said electrical grid in accordance with said calculations via said electronic decoupling apparatus.
摘要翻译： 本发明涉及一种用于操作火力发电厂的方法，其包括燃气轮机和通过轴直接由燃气涡轮驱动的发电机，并通过电子去耦连接到具有电网频率（FG）的电网 装置和升压变压器。 通过所述方法实现合成惯性响应，包括以下步骤：感测所述电网频率（FG）; 检测在所述电网频率（FG）的偏移的情况下是否需要额外的惯性功率; 如果需要惯性功率，则计算附加惯性功率的大小和持续时间; 并且根据经由所述电子去耦装置的所述计算，向所述电网释放额外的惯性功率。
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