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公开(公告)号：US20080106098A1
公开(公告)日：2008-05-08
申请号：US11555987
申请日：2006-11-02
IPC分类号： H02P9/04
CPC分类号： H02J3/1871 , F03D9/25 , H02J3/386 , H02P21/22 , Y02E10/725 , Y02E10/763
摘要： A method for determining electric currents for an electrical machine includes generating a first real power current demand signal and a first reactive power current demand signal. The method also includes determining at least one of a second real power current demand signal and a second reactive power current demand signal by prioritizing a second real power current demand signal over a second reactive power current demand signal. Alternatively, the method also includes determining at least one of a second real power current demand signal and a second reactive power current demand signal by prioritizing the second reactive power current demand signal over the second real power current demand signal. The method further includes comparing at least one of the first real power current demand signal and first reactive power current demand signal to at least one electrical machine current limit signal.
摘要翻译： 一种用于确定电机的电流的方法包括产生第一有功功率电流需求信号和第一无功功率电流需求信号。 该方法还包括通过在第二无功功率电流需求信号上优先化第二有功功率电流需求信号来确定第二有功功率电流需求信号和第二无功功率电流需求信号中的至少一个。 或者，该方法还包括通过在第二有功功率电流需求信号上优先化第二无功功率电流需求信号来确定第二有功功率电流需求信号和第二无功功率电流需求信号中的至少一个。 该方法还包括将第一有功功率电流需求信号和第一无功功率电流需求信号中的至少一个与至少一个电机限流信号进行比较。
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公开(公告)号：US07417333B2
公开(公告)日：2008-08-26
申请号：US11555987
申请日：2006-11-02
CPC分类号： H02J3/1871 , F03D9/25 , H02J3/386 , H02P21/22 , Y02E10/725 , Y02E10/763
摘要： A method for determining electric currents for an electrical machine includes generating a first real power current demand signal and a first reactive power current demand signal. The method also includes determining at least one of a second real power current demand signal and a second reactive power current demand signal by prioritizing a second real power current demand signal over a second reactive power current demand signal. Alternatively, the method also includes determining at least one of a second real power current demand signal and a second reactive power current demand signal by prioritizing the second reactive power current demand signal over the second real power current demand signal. The method further includes comparing at least one of the first real power current demand signal and first reactive power current demand signal to at least one electrical machine current limit signal.
摘要翻译： 一种用于确定电机的电流的方法包括产生第一有功功率电流需求信号和第一无功功率电流需求信号。 该方法还包括通过在第二无功功率电流需求信号上优先化第二有功功率电流需求信号来确定第二有功功率电流需求信号和第二无功功率电流需求信号中的至少一个。 或者，该方法还包括通过在第二有功功率电流需求信号上优先化第二无功功率电流需求信号来确定第二有功功率电流需求信号和第二无功功率电流需求信号中的至少一个。 该方法还包括将第一有功功率电流需求信号和第一无功功率电流需求信号中的至少一个与至少一个电机限流信号进行比较。
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公开(公告)号：US5914540A
公开(公告)日：1999-06-22
申请号：US865526
申请日：1997-05-29
申请人： Einar Larsen
发明人： Einar Larsen
摘要： A neutral conductor filter having three transformers. A first transformer has a primary winding connected to a first power conductor and the neutral conductor. A second transformer has a primary winding connected to a second power conductor and the neutral conductor. A third transformer has a primary winding connected to a third power conductor and the neutral conductor. The secondary windings of the transformers are connected in series with each other and a capacitor is connected in parallel with the series connected secondary windings. The capacitor is tuned with the leakage reactance of the transformers so that the impedance to zero-sequence third harmonic current is minimized.
摘要翻译： 具有三个变压器的中性导体滤波器。 第一变压器具有连接到第一电力导体和中性导体的初级绕组。 第二变压器具有连接到第二电力导体和中性导体的初级绕组。 第三变压器具有连接到第三电力导体和中性导体的初级绕组。 变压器的次级绕组彼此串联连接，电容器与串联的次级绕组并联连接。 电容器用变压器的漏电抗进行调谐，使得零序三次谐波电流的阻抗最小化。
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公开(公告)号：US07629705B2
公开(公告)日：2009-12-08
申请号：US11551430
申请日：2006-10-20
CPC分类号： H02P9/007 , H02J3/386 , H02P2101/15 , Y02E10/763
摘要： A method for operating an electrical machine includes coupling the electrical machine to an electric power system such that the electric power system is configured to transmit at least one phase of electric power to and from the electrical machine. The method also includes configuring the electrical machine such that the electrical machine remains electrically connected to the electric power system during and subsequent to a voltage amplitude of the electric power system operating outside of a predetermined range for an undetermined period of time.
摘要翻译： 一种用于操作电机的方法包括将电机耦合到电力系统，使得电力系统被配置为向电机传输至少一个电力相。 该方法还包括配置电机，使得电机在电力系统的电压振幅期间和之后保持电连接到电力系统，该电力系统在预定的时间段之外运行在预定范围之外。
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公开(公告)号：US20060012181A1
公开(公告)日：2006-01-19
申请号：US11230366
申请日：2005-09-19
申请人： Einar Larsen
发明人： Einar Larsen
IPC分类号： F03D9/00
CPC分类号： H02J3/386 , F03D9/257 , F05B2260/96 , Y02E10/72 , Y02E10/763
摘要： A wind turbine generator control system includes relatively fast regulation of voltage near the individual generators with relatively slower overall reactive power regulation at a substation or wind farm level. The setpoint of the relatively fast voltage regulator is adjusted by the relatively slow reactive power regulator. The fast voltage regulation can be at the generator terminals or at a synthesized remote point.
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公开(公告)号：US5910889A
公开(公告)日：1999-06-08
申请号：US864999
申请日：1997-05-29
申请人： Einar Larsen , Robert Delmerico
发明人： Einar Larsen , Robert Delmerico
摘要： A hybrid active power filter having programmed impedance characteristics is presented. In accordance with which, a passive device comprising a capacitor C.sub.F is connected in series with an active device which are together connected in shunt with a power source and a load at transmission lines of a power system. Capacitor C.sub.F substantially supports the full-line voltage V.sub.H of the power source, whereby the active filter is exposed to a substantially lower voltage than the line voltage V.sub.H. The active device includes on active filter, i.e., an inverter current regulator with a programmable controller for executing a control algorithm. The controller of the active device receives signals corresponding to a voltage V.sub.M, at the low side of filter capacitor C.sub.F. Voltage V.sub.M is at a substantially lower voltage than the line voltage V.sub.H, whereby the cost of sensing voltage V.sub.M is significantly less than sensing the high line voltage V.sub.. The control algorithm of the present invention is expressed as ##EQU1## where I.sub.A is the current in the active device and Y.sub.FAo is an order transfer function of the effective admittance of the active device. Y.sub.FAo is a continuous function which is defined to provide a low impedance path at desired frequencies. Accordingly, the control algorithm controls the current I.sub.A in response to voltage V.sub.M sensed at the low side of filter capacitor C.sub.F as dictated by the programmed function. The active device may be connected to the passive filter at a junction between two capacitors or at a junction between two inductors.
摘要翻译： 提出了具有编程阻抗特性的混合有源电力滤波器。 根据该方式，包括电容器CF的无源器件与有源器件串联连接，该有源器件一起连接在电源和电力系统的传输线路上的负载分流中。 电容器CF基本上支持电源的全线电压VH，由此有源滤波器暴露于比线电压VH更低的电压。 有源器件包括有源滤波器，即具有用于执行控制算法的可编程控制器的反相器电流调节器。 有源器件的控制器在滤波电容器CF的低侧接收对应于电压VM的信号。 电压VM的电压远低于线路电压VH，因此感测电压VM的成本明显低于感测高的线路电压V.本发明的控制算法表示为：IA是有效的电流 器件和YFAo是有源器件有效导纳的定单传递函数。 YFAo是一种连续功能，其定义为在所需频率下提供低阻抗路径。 因此，控制算法响应于由编程功能所规定的在滤波电容器CF的低侧检测到的电压VM来控制电流IA。 有源器件可以在两个电容器之间的接点处或两个电感器之间的连接处连接到无源滤波器。
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公开(公告)号：US20050046196A1
公开(公告)日：2005-03-03
申请号：US10655514
申请日：2003-09-03
申请人： Einar Larsen
发明人： Einar Larsen
CPC分类号： H02J3/386 , F03D9/257 , F05B2260/96 , Y02E10/72 , Y02E10/763
摘要： A wind turbine generator control system includes relatively fast regulation of voltage near the individual generators with relatively slower overall reactive power regulation at a substation or wind farm level. The setpoint of the relatively fast voltage regulator is adjusted by the relatively slow reactive power regulator. The fast voltage regulation can be at the generator terminals or at a synthesized remote point.
摘要翻译： 风力发电机控制系统包括在变电站或风电场级别下相对较慢地对单个发电机附近的电压进行相对较慢的总体无功功率调节。 相对较快的电压调节器的设定值由相对较慢的无功功率调节器调节。 快速电压调节可以在发电机端子或合成的远程点。
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公开(公告)号：US20080093853A1
公开(公告)日：2008-04-24
申请号：US11551430
申请日：2006-10-20
CPC分类号： H02P9/007 , H02J3/386 , H02P2101/15 , Y02E10/763
摘要： A method for operating an electrical machine includes coupling the electrical machine to an electric power system such that the electric power system is configured to transmit at least one phase of electric power to and from the electrical machine. The method also includes configuring the electrical machine such that the electrical machine remains electrically connected to the electric power system during and subsequent to a voltage amplitude of the electric power system operating outside of a predetermined range for an undetermined period of time.
摘要翻译： 一种用于操作电机的方法包括将电机耦合到电力系统，使得电力系统被配置为向电机传输至少一个电力相。 该方法还包括配置电机，使得电机在电力系统的电压振幅期间和之后保持电连接到电力系统，该电力系统在预定的时间段之外运行在预定范围之外。
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公开(公告)号：US20060255594A1
公开(公告)日：2006-11-16
申请号：US11484513
申请日：2006-07-10
申请人： Einar Larsen
发明人： Einar Larsen
IPC分类号： H02P9/04
CPC分类号： H02J3/386 , F03D9/257 , F05B2260/96 , Y02E10/72 , Y02E10/763
摘要： A wind turbine generator control system includes relatively fast regulation of voltage near the individual generators with relatively slower overall reactive power regulation at a substation or wind farm level. The setpoint of the relatively fast voltage regulator is adjusted by the relatively slow reactive power regulator. The fast voltage regulation can be at the generator terminals or at a synthesized remote point.
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10.发明申请公开(公告)号：US20060170219A1
公开(公告)日：2006-08-03
申请号：US10905991
申请日：2005-01-28
申请人： Einar Larsen
发明人： Einar Larsen
IPC分类号： F02D29/06
CPC分类号： H02J3/38 , F01D15/10 , H02J3/1885 , Y02E40/32
摘要： A method of controlling a compressor turbine motor train including: receiving a control signal from a plant process controller; receiving a feedback signal indicative of a state of the electrical grid and adjusting an operational parameter of the compressor turbine motor train to stabilize at least one of a frequency and a voltage of the electrical grid.
摘要翻译： 一种控制压缩机涡轮机组的方法，包括：从工厂过程控制器接收控制信号; 接收指示所述电网的状态的反馈信号，并且调整所述压缩机涡轮机组的操作参数以稳定所述电网的频率和电压中的至少一个。
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