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公开(公告)号：US20170331296A1
公开(公告)日：2017-11-16
申请号：US15668808
申请日：2017-08-04
CPC分类号： H02J3/386 , G01R19/10 , G01R31/42 , H02J3/01 , H02M1/12 , H02M5/4585 , Y02E10/763 , Y02E40/40
摘要： Provided is an apparatus for delivering electrical power, in particular for delivering regeneratively produced electrical power, which has at least one converter and at least one filter for matching the delivery of power by the converter to a load impedance. Also provided is a method for operating the apparatus for delivering electrical power which allows improved monitoring of the functioning of the filters or mains filters and which uses means for determining at least one filter current in at least one filter, which means are designed in such a manner that said means make it possible to determine the at least one filter current during operation of the apparatus. Comparison means are provided and generate an error information signal using the desired value and actual value of the filter current and a predefinable error criterion.
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公开(公告)号：US11990834B2
公开(公告)日：2024-05-21
申请号：US17863064
申请日：2022-07-12
CPC分类号： H02M1/325 , H02J3/0012 , H02J3/32 , H02J3/381 , H02M1/0009 , H02M7/5387 , H02J2300/24 , H02J2300/28
摘要： Disclosed is a method for operating a three-phase inverter on a three-phase load. The three-phase inverter has a direct voltage intermediate circuit, at least one three-phase bridge circuit, and at least one control unit for controlling the bridge circuit. In the at least one bridge circuit, at least two power switches per phase are provided, which are connected in series parallel to the direct voltage intermediate circuit. Depending on predefined target voltage values of the three phases of the inverter, the power switches of each individual phase are actuated via the control unit such that a three-phase alternating voltage is generated on the three-phase load via switching operations of the power switches. Very good dynamic control behaviour can be achieved despite cost-effective dimensioning of the IGBT power switches of the three-phase bridge circuit.
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公开(公告)号：US20220345030A1
公开(公告)日：2022-10-27
申请号：US17863064
申请日：2022-07-12
摘要： Disclosed is a method for operating a three-phase inverter on a three-phase load. The three-phase inverter has a direct voltage intermediate circuit, at least one three-phase bridge circuit, and at least one control unit for controlling the bridge circuit. In the at least one bridge circuit, at least two power switches per phase are provided, which are connected in series parallel to the direct voltage intermediate circuit. Depending on predefined target voltage values of the three phases of the inverter, the power switches of each individual phase are actuated via the control unit such that a three-phase alternating voltage is generated on the three-phase load via switching operations of the power switches. Very good dynamic control behaviour can be achieved despite cost-effective dimensioning of the IGBT power switches of the three-phase bridge circuit.
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公开(公告)号：US10090680B2
公开(公告)日：2018-10-02
申请号：US15668808
申请日：2017-08-04
摘要： Provided is an apparatus for delivering electrical power, in particular for delivering regeneratively produced electrical power, which has at least one converter and at least one filter for matching the delivery of power by the converter to a load impedance. Also provided is a method for operating the apparatus for delivering electrical power which allows improved monitoring of the functioning of the filters or mains filters and which uses means for determining at least one filter current in at least one filter, which means are designed in such a manner that said means make it possible to determine the at least one filter current during operation of the apparatus. Comparison means are provided and generate an error information signal using the desired value and actual value of the filter current and a predefinable error criterion.
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公开(公告)号：US20090267572A1
公开(公告)日：2009-10-29
申请号：US12304369
申请日：2007-05-30
IPC分类号： H02P9/10
摘要： In a method and an apparatus for controlling the output or drawn active and reactive power of a double-fed asynchronous machine (5), the maintenance of a maximum permissible current (16) of the machine—without the use of a subordinate current controller—is ensured by virtue of the fact that, during the operation of the double-fed asynchronous machine, a maximum permissible desired value for the active power (10a) to be output or to be drawn and a maximum permissible desired value for the reactive power (10b) to be output or to be drawn are calculated with the aid of a model of the asynchronous machine from the maximum permissible current (16), preferably corrected at least using the actual value of the current to be limited of the machine, in such a way that the maximum permissible current (16) is not exceeded; The predetermined active and reactive power desired values are then limited to the calculated maximum permissible values.
摘要翻译： 在用于控制双馈异步电机（5）的输出或抽取的有功功率和无功功率的方法和装置中，维护机器的最大允许电流（16） - 不使用从属电流控制器 - 通过以下事实确保：在双馈异步电机的操作期间，有功功率（10a）的输出或拉出的最大允许期望值和无功功率的最大允许期望值（ 10b）被输出或被绘制是根据最大允许电流（16）借助于异步电机的型号来计算的，优选地至少使用要限制机器的电流的实际值进行校正。 不超过最大允许电流（16）的方式; 然后将预定的有功和无功功率期望值限制到计算的最大允许值。
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公开(公告)号：US08373293B2
公开(公告)日：2013-02-12
申请号：US13090420
申请日：2011-04-20
申请人： Stephan Engelhardt , Lars Kock
发明人： Stephan Engelhardt , Lars Kock
CPC分类号： H02P9/006 , F03D9/255 , H02P9/007 , H02P9/10 , H02P29/0241 , H02P2101/15 , H02P2207/073 , Y02E10/72
摘要： A protection system for a doubly-fed induction machine; with a stator and a rotor. The stator of the doubly-fed induction machine is connected to a grid, and the rotor of the doubly-fed induction machine is connected to the grid via a converter. The converter includes a machine side converter, and a DC-link and a line side converter. The protection system also includes at least one crowbar, the crowbar being connected to the rotor, at least one DC-chopper provided in the DC-link, a converter controller, and a separate protection device for DC-chopper and the at least one crowbar.
摘要翻译： 双馈感应电机的保护系统; 具有定子和转子。 双馈感应电机的定子连接到电网，双馈感应电机的转子通过转换器连接到电网。 该转换器包括机器侧转换器，以及DC链路和线路侧转换器。 保护系统还包括至少一个撬棒，撬棒连接到转子，设置在DC链节中的至少一个DC斩波器，转换器控制器和用于DC斩波器的单独的保护装置，以及至少一个撬棒 。
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公开(公告)号：US08653683B2
公开(公告)日：2014-02-18
申请号：US13111339
申请日：2011-05-19
IPC分类号： H02P9/42
CPC分类号： H02P9/007 , F03D9/25 , F03D9/257 , F05B2240/96 , H02J3/386 , H02P9/105 , H02P2101/15 , Y02E10/725 , Y02E10/763
摘要： The invention relates to a device and method for controlling a double-fed asynchronous machine (4), preferably for a power plant, in particular for a wind or water power plant. The device includes an indirect converter (6) which is connected on the rotor side to the double-fed asynchronous machine (4). The indirect converter (6) includes a rotor-side converter (20) and a line-side converter (24). At least one control element (8) is provided for controlling the indirect converter (6). At least one software-based and/or hardware-based damping element (40, 46, 48, 120) is provided which has changeable damping characteristics.
摘要翻译： 本发明涉及一种用于控制双馈异步机（4）的装置和方法，优选地用于发电厂，特别是用于风力或水力发电厂。 该装置包括间接转换器（6），该间接转换器（6）在转子侧连接到双馈异步机（4）。 间接转换器（6）包括转子侧转换器（20）和线路侧转换器（24）。 提供至少一个控制元件（8）用于控制间接转换器（6）。 提供至少一个基于软件的和/或基于硬件的阻尼元件（40,46,48,120），其具有可变阻尼特性。
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8.发明授权Method of and apparatus for compensation of oscillation effects in the event of mains asymmetry in a double-fed asynchronous machine 有权在双馈异步电机的电源不对称情况下，振荡效应补偿的方法和装置公开(公告)号：US08415818B2
公开(公告)日：2013-04-09
申请号：US12674278
申请日：2008-08-09
IPC分类号： H02P9/00
CPC分类号： F03D7/028 , F03D7/0272 , F03D7/044 , F03D9/255 , F03D15/20 , F05B2260/96 , H02P9/007 , H02P9/102 , H02P21/00 , H02P2101/15 , Y02E10/723
摘要： In a method for the compensation of rotor torque oscillations upon the occurrence of mains asymmetries in relation to a double-fed asynchronous machine (1) it is provided that at least one respective currently prevailing machine parameter is measured and/or derived, the at least one machine parameter is respectively decomposed by calculation into a positive and a negative sequence system component and optionally a DC component, and for the positive sequence system component, the negative sequence system component and optionally for the DC component of the at least one machine parameter, there are respective separate control members for controlling an adjusting value, to which the respective components of the machine parameters are fed as input components and the output values of which are additively superposed. In that case the control members are so adapted for controlling the adjusting value in such a way that the torque oscillations are counteracted. Alternatively there is provided a control member to which the cross-product of the positive sequence system components and negative sequence system components as well as the cross-product of the negative sequence system components and positive sequence system components are fed as an input value, the control member being so adapted for controlling the adjusting value in such a way that second-order torque oscillations are counteracted.
摘要翻译： 在相对于双馈异步机（1）发生电源不对称性时补偿转子转矩振荡的方法中，提供至少一个相应的当前主要的机器参数被测量和/或导出，至少 一个机器参数分别通过计算分解为正和负序列系统组件和任选的DC分量，并且对于正序列系统组件，负序系统组件和可选地用于至少一个机器参数的DC分量， 存在用于控制调整值的各自的单独的控制构件，机器参数的各个部件被馈送到调整值作为输入部件，并且输出值被相加地重叠。 在这种情况下，控制构件适于以这样的方式控制调节值，使得扭矩振荡被抵消。 或者，提供了控制构件，将正序列系统组件和负序系统组件的交叉乘积以及负序系统组件和正序系统组件的交叉乘积作为输入值， 控制构件适于以这样的方式控制调节值，使得二阶扭矩振荡被抵消。
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公开(公告)号：US08242753B2
公开(公告)日：2012-08-14
申请号：US12304369
申请日：2007-05-30
摘要： In a method and an apparatus for controlling the output or drawn active and reactive power of a double-fed asynchronous machine (5), the maintenance of a maximum permissible current (16) of the machine—without the use of a subordinate current controller—is ensured by virtue of the fact that, during the operation of the double-fed asynchronous machine, a maximum permissible desired value for the active power (10a) to be output or to be drawn and a maximum permissible desired value for the reactive power (10b) to be output or to be drawn are calculated with the aid of a model of the asynchronous machine from the maximum permissible current (16), preferably corrected at least using the actual value of the current to be limited of the machine, in such a way that the maximum permissible current (16) is not exceeded. The predetermined active and reactive power desired values are then limited to the calculated maximum permissible values.
摘要翻译： 在用于控制双馈异步电机（5）的输出或抽取的有功功率和无功功率的方法和装置中，维护机器的最大允许电流（16） - 不使用从属电流控制器 - 通过以下事实确保：在双馈异步电机的操作期间，有功功率（10a）的输出或拉出的最大允许期望值和无功功率的最大允许期望值（ 10b）被输出或被绘制是根据最大允许电流（16）借助于异步电机的型号来计算的，优选地至少使用要限制机器的电流的实际值进行校正。 不超过最大允许电流（16）的方式。 然后将预定的有功和无功功率期望值限制到计算的最大允许值。
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公开(公告)号：US20110210553A1
公开(公告)日：2011-09-01
申请号：US13090420
申请日：2011-04-20
申请人： Stephan Engelhardt , Lars Kock
发明人： Stephan Engelhardt , Lars Kock
CPC分类号： H02P9/006 , F03D9/255 , H02P9/007 , H02P9/10 , H02P29/0241 , H02P2101/15 , H02P2207/073 , Y02E10/72
摘要： The invention relates to a protection system of a doubly-fed induction machine, the system comprises a doubly-fed induction machine with a stator and a rotor, the stator of said doubly-fed induction machine is connected to a grid and the rotor of said doubly-fed induction machine is connected to the grid via a converter, said converter comprises a machine side converter, a DC-link and a line side converter. The system comprises additionally at least one crowbar, said crowbar is connected to the rotor, at least one DC-chopper provided in the DC-link, a converter controller and a separate protection device. The object of the present invention to provide a protection system and a protection method of a doubly-fed induction machine which can be easily used with high sampling rates and which provides a good protection for the doubly fed induction machine is resolved in that the DC-chopper and the crowbar are controlled with the separate protection device.
摘要翻译： 本发明涉及双馈感应电机的保护系统，该系统包括具有定子和转子的双馈感应电机，所述双馈感应电机的定子连接到电网并且所述转子的所述转子 双馈感应电机通过转换器连接到电网，所述转换器包括机器侧转换器，直流链路和线路侧转换器。 该系统还包括至少一个撬棒，所述撬棒连接到转子，设置在DC链路中的至少一个DC斩波器，转换器控制器和单独的保护装置。 本发明的目的是提供一种双馈感应电机的保护系统和保护方法，其可以容易地以高采样率使用并且为双馈感应电机提供良好的保护，解决了DC- 斩波器和撬棍由独立的保护装置控制。
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