公开(公告)号：US20230323848A1

公开(公告)日：2023-10-12

申请号：US18022890

申请日：2021-08-30

Applicant: Pauli Harila

Inventor： Jarkko Maatta ,  Pauli Harila

IPC: F03B11/00 ,  F03B11/04 ,  F03B15/16

CPC classification number: F03B11/008 ,  F03B11/04 ,  F03B15/16 ,  F05B2220/32 ,  F05B2270/1095

Abstract: This document discloses a solution for analysing cavitation in a hydro turbine of a hydroelectric power plant. According to an aspect, a method comprises: measuring, by using at least one motion sensor coupled to a rotor of the hydro turbine, motion of the rotor during operation of the hydro turbine and thereby generating measurement data; acquiring, by at least one processor, the measurement data and one or more operational parameters of the hydro turbine employed during said measuring, the one or more operational parameters indicative of power supply of the hydro turbine; computing, by the at least one processor on the basis of the measurement data and the operational parameters, at least one metric indicative of an effect of the cavitation on the hydro turbine; comparing, by the at least one processor, the at least one metric with at least one threshold and determining, on the basis of the comparison, that the effect of the cavitation is too high; and outputting, by the at least one processor on the basis of said determining, information indicating unsuitability of the one or more operational parameters.

公开(公告)号：US20180266383A1

公开(公告)日：2018-09-20

申请号：US15763487

申请日：2016-10-24

Applicant: Lori BARG ,  COMMUNITY HYDRO, LLC

Inventor： Lori BARG ,  Allan CHERTOK

IPC: F03B13/08 ,  F03B15/14 ,  F03B15/16 ,  F03B3/06

CPC classification number: F03B13/08 ,  F03B3/04 ,  F03B3/06 ,  F03B15/04 ,  F03B15/08 ,  F03B15/14 ,  F03B15/16 ,  F05B2270/20 ,  Y02E10/22 ,  Y02E10/226

Abstract: A system for generating power from a flow of liquid having at most fifty feet of head and a flow rate of at most 300 cubic feet per second, includes: an axial-flow turbine, a penstock, an intake, a generator, and a control circuit. Each blade of the turbine runner is releasably coupled to the hub and each blade: 1) is configured to extract energy from liquid flowing through the runner by rotating the hub when the flow of liquid contacts the blade, and 2) has a pitch that is adjustable. The length of the penstock is adjustable. The generator is operable to generate electric power from rotation of the turbine. The control circuit to determines changes in the flow of liquid and in response modifies at least one of the following: 1) the speed of the axial-flow turbine's hub, and 2) the flow of liquid that the runner receives.

公开(公告)号：US09006919B2

公开(公告)日：2015-04-14

申请号：US13412709

申请日：2012-03-06

Applicant: Gerard J. Lynch

Inventor： Gerard J. Lynch

IPC: F03B13/00 ,  H02P9/04 ,  H02N2/18 ,  F03B17/06 ,  F03D5/00

CPC classification number: F03B13/10 ,  F03B1/04 ,  F03B15/16 ,  F03B17/06 ,  F03D5/00 ,  H02N2/181 ,  H02N2/185 ,  H02P9/04 ,  Y02E10/28 ,  Y02E10/70

Abstract: An adaptive system for harvesting hydrokinetic energy from flowing fluid uses a hydrofoil-type vane in a flow-way and an electrical power generator to convert torque generated by the oscillating vane to electrical current. The generator may be electromagnetic or piezoelectric. The system includes a control module that measures the oscillation of the vane, the generated torque, or the characteristics of the generated current, and modifies the resistance of the vane or the conversion of the electrical current in response to changes therein. Some systems include a frame that can be anchored in a body of water. Some systems are portable and provide illumination. Some systems are adapted for use as hiking or camping gear and may be inserted into stream beds or used as walking sticks. Some systems are in-line devices. Some systems are adapted as fishing lures.

Abstract translation: 用于从流动的流体中收集流体动能的自适应系统使用流路中的水翼式叶片和发电机将由振荡叶片产生的扭矩转换成电流。 发电机可以是电磁的或压电的。 该系统包括控制模块，其测量叶片的振荡，产生的转矩或所产生的电流的特性，并根据其中的变化来修改叶片的电阻或电流的转换。 一些系统包括可以锚定在水体中的框架。 一些系统是便携式的并且提供照明。 一些系统适用于远足或露营装置，并且可以插入流床或用作手杖。 一些系统是在线设备。 一些系统适用于钓鱼诱饵。

公开(公告)号：US20140236367A1

公开(公告)日：2014-08-21

申请号：US14129196

申请日：2012-06-25

Applicant: Vicente Ruiz Gomis ,  Joaquin Orts Paredes ,  Jaime Lledo Lara ,  Jose Carlos Orts Paredes

Inventor： Vicente Ruiz Gomis ,  Joaquin Orts Paredes ,  Jaime Lledo Lara ,  Jose Carlos Orts Paredes

IPC: F03D7/02 ,  F03D7/04

CPC classification number: F03D7/0272 ,  E03B7/072 ,  F03B15/16 ,  F03D7/043 ,  F05B2270/3011 ,  F05B2270/3013 ,  F05B2270/335 ,  Y02E10/226

Abstract: Control device for hydraulic turbines configured to adjust the resistant torque provided by the generator to the movement of the impeller of an hydraulic turbine (3) so that a stable pressure is set at the inlet (Pi) and at the outlet (Po) regardless of the circulating flow rate (Q), and to adjust the electrical energy produced by the turbine to achieve the desired hydraulic behavior, the device comprising a control means (100) and a power means (200); wherein said control means (100) is connected to means for detecting the pressure at the inlet (Pi) and at the outlet (Po) and to a flow-meter (1) for obtaining the circulating flow rate (Q), as well as to means for measuring the power (2) of the turbine (3); all this, in such a way that the control means (100) acts on the power means (200) for causing the application of the braking torque necessary to maintain a stable set-point value on the turbine (3).

Abstract translation: 用于水轮机的控制装置被配置成将由发电机提供的阻力扭矩调节到水轮机（3）的叶轮的运动，使得在入口（Pi）和出口（Po）处设置稳定的压力，而不管 循环流量（Q），并且调节由涡轮产生的电能以实现所需的液压行为，所述装置包括控制装置（100）和动力装置（200）; 其中所述控制装置（100）连接到用于检测入口（Pi）和出口（Po）处的压力和用于获得循环流量（Q）的流量计（1）的装置，以及 用于测量涡轮机（3）的功率（2）的装置; 所有这一切，使得控制装置（100）作用在动力装置（200）上，以使施加维持在涡轮机（3）上的稳定设定值的必要的制动转矩。

公开(公告)号：US08686580B2

公开(公告)日：2014-04-01

申请号：US13245101

申请日：2011-09-26

Applicant: Gerald Hearns ,  Christopher Alan Smith ,  Simon Gray ,  Matthew James Cunningham

Inventor： Gerald Hearns ,  Christopher Alan Smith ,  Simon Gray ,  Matthew James Cunningham

IPC: H02P9/04

CPC classification number: F03B13/12 ,  F03B13/142 ,  F03B15/00 ,  F03B15/16 ,  Y02E10/32 ,  Y02E10/38

Abstract: In an oscillating water column (OWC) assembly power may be generated based on a power reference that is derived from an estimate of the available mechanical power in the air turbine 2 or a measured pressure drop across the turbine. The power reference is used to derive a power control torque reference within a power controller 14. A speed controller 16 uses a comparison of a measured speed of the generator 8 and a maximum speed limit to derive a speed control torque reference. A selector function 22 selects whichever of the power control and speed control torque references is the maximum at any time instant. The selected torque reference is input to an anti stall torque function 24 where it is selectively modified by applying a speed dependent gain that decreases with decreasing turbine speed, preferably so that the main torque reference is zero for a minimum speed limit.

Abstract translation: 在振荡水柱（OWC）中，可以基于从空气涡轮机2中的可用机械功率的估计或跨越涡轮机的测量的压降导出的功率基准来产生组件功率。 功率参考用于在功率控制器14内导出功率控制转矩参考。速度控制器16使用发电机8的测量速度与最大速度极限的比较来导出速度控制转矩参考。 选择器功能22在任何时刻选择功率控制和速度控制转矩基准中的哪个最大值。 选择的转矩基准被输入到防失速转矩功能24中，其中通过施加随着涡轮转速降低而降低的速度相关增益来选择性地修改，优选地使得主转矩基准对于最小速度限制为零。

公开(公告)号：US20120319406A1

公开(公告)日：2012-12-20

申请号：US13523785

申请日：2012-06-14

Applicant: Norbert Hoffmann ,  Jasper Behrendt ,  Nicolas Houis ,  Nik Scharmann ,  Bejamin Hagemann ,  Markus Perschall ,  Alexander Poddey ,  Daniel Thull ,  Michael Hilsch

Inventor： Norbert Hoffmann ,  Jasper Behrendt ,  Nicolas Houis ,  Nik Scharmann ,  Bejamin Hagemann ,  Markus Perschall ,  Alexander Poddey ,  Daniel Thull ,  Michael Hilsch

IPC: F03B15/00 ,  F03B13/16

CPC classification number: F03B15/16 ,  F03B13/183 ,  F03B15/12 ,  G01C13/002 ,  Y02E10/38

Abstract: A method for operating a wave energy converter for converting energy from a wave movement of a fluid into a different form of energy. The wave energy converter including at least one rotor and at least one energy converter coupled to the at least one rotor. A first torque acting on the at least one rotor is generated by the movement of the waves and a second torque acting on the at least one rotor is generated by the at least one energy converter. A desired effective force acting perpendicular to an axis of rotation of the at least one rotor is set by setting the first and/or second torque.

Abstract translation: 一种用于操作波能量转换器的方法，用于将来自流体的波浪运动的能量转换成不同形式的能量。 所述波能转换器包括至少一个转子和耦合到所述至少一个转子的至少一个能量转换器。 通过波的移动产生作用在至少一个转子上的第一扭矩，并且由至少一个能量转换器产生作用在至少一个转子上的第二扭矩。 通过设定第一和/或第二扭矩来设定垂直于至少一个转子的旋转轴作用的期望的有效力。

公开(公告)号：US5754446A

公开(公告)日：1998-05-19

申请号：US699653

申请日：1996-08-19

Applicant: Richard K. Fisher, Jr. ,  Richard A. Johnson ,  Ronald E. Deitz

Inventor： Richard K. Fisher, Jr. ,  Richard A. Johnson ,  Ronald E. Deitz

IPC: F03B15/12 ,  F03B15/16 ,  G05B13/04 ,  G06F17/00

CPC classification number: F03B15/12 ,  F03B15/16 ,  Y02E10/226

Abstract: A method and system for optimizing performance of a Kaplan turbine power generating unit are provided wherein an optimal "N-dimensional" virtual cam is populated with gate and blade positional settings producing maximum power output for a set of N operating parameters. The preferred parameters include head, flow, power generation level, physical situation of the unit, operating state of neighboring units, trash rack loss and a parameter indicative of cavitation (such as relative submersion level). When the system detects a unique set of operating conditions for which optimization is needed, an iterative optimization search is performed for the best gate and blade positional settings, which are then saved in memory (populating the cam matrix) for subsequent use when the same operating conditions are encountered. The optimal matrix divides parameters having ranges into range segments and treats other parameters as having discrete states. The optimization search is preferably performed while maintaining flow constant, and a flow characteristic search is performed to determine candidate gate and blade settings resulting in constant flow.

Abstract translation: 提供了一种用于优化Kaplan涡轮发电单元的性能的方法和系统，其中最优的“N维”虚拟凸轮填充有对于一组N个操作参数产生最大功率输出的门和刀片位置设置。 优选的参数包括头部，流量，发电水平，单元的物理情况，相邻单元的操作状态，垃圾架损失和指示空化（例如相对浸入水平）的参数。 当系统检测到需要进行优化的唯一操作条件集合时，对最佳的门和刀片位置设置执行迭代优化搜索，然后将其保存在存储器中（填充凸轮矩阵），以便在相同的操作 遇到条件 最佳矩阵将具有范围的参数划分为范围段，并将其他参数视为具有离散状态。 优化搜索优选在维持流量恒定的同时执行，并且执行流特征搜索以确定导致恒定流量的候选门和刀片设置。

公开(公告)号：US5402332A

公开(公告)日：1995-03-28

申请号：US80334

申请日：1993-06-22

Applicant: Eberhard Kopf

Inventor： Eberhard Kopf

IPC: F03B15/04 ,  F03B15/12 ,  F03B15/16 ,  G05B13/04

CPC classification number: F03B15/16 ,  F03B15/04 ,  F03B15/12 ,  Y02E10/226

Abstract: A method for optimizing the efficiency of a set of machines comprising a double-controlled turbine and a generator. A correlation is determined between the efficiency .beta., flow Q, variable height of fall H, gate opening .DELTA..gamma. and runner opening .phi. on a model set of machines by test series. The determination yields a model optimum curve for the respective height of fall, the model optimum curve having the optimum gate opening as a function of flow and runner opening. An optimum efficiency for an operating point of a large-scale system is determined by, based on the model optimum curve, making variations of the gate opening .DELTA..gamma. and of the runner opening .phi. on the large-scale system, the variations being such that the flow of the model set of machines would remain constant for the same variations, and wherein the flow of the large-scale system is also presumed to be constant. The power outputs before and after the variations are compared to determine stepwise the .DELTA..gamma./.phi. operating point with optimum efficiency.

Abstract translation: 一种用于优化包括双重控制的涡轮机和发电机的一组机器的效率的方法。 通过试验系列，在一组模型机器上，在效率β，流量Q，下降H的可变高度，开口DELTAγ和流道开口phi之间确定相关性。 该确定产生相应的下降高度的模型最佳曲线，模型最佳曲线具有作为流动和流道开口的函数的最佳门开口。 通过基于模型最佳曲线，在大型系统上使闸门开度DELTA gamma和转轮开口phi的变化确定大规模系统的操作点的最佳效率，其变化使得 模型组的机器​​的流动对于相同的变化将保持恒定，并且其中大规模系统的流动也被认为是恒定的。 比较变化之前和之后的功率输出，以最佳效率逐步确定DELTA gamma / phi工作点。

公开(公告)号：US5322412A

公开(公告)日：1994-06-21

申请号：US886108

申请日：1992-05-21

Applicant: Josef Erlach

Inventor： Josef Erlach

IPC: F03B3/18 ,  F03B15/04 ,  F03B15/16 ,  H02P9/04 ,  F01D17/00

CPC classification number: F03B15/16 ,  H02P9/04 ,  H02P2101/10 ,  Y02E10/223 ,  Y02E10/226

Abstract: In a water turbine having a distributor with adjustable guide vanes and a runner having adjustable runner blades, optimization of the operating parameters is performed indirectly in that fluctuations in intensity of the generator output or the bearing oscillations of the water turbine are determined without taking account of the absolute values and are set or adjusted to a minimum.

Abstract translation: 在具有具有可调节导向叶片的分配器和具有可调节流道叶片的流道的水轮机中，间接执行操作参数的优化，其中确定发电机输出的强度波动或水轮机的轴承振荡，而不考虑 将绝对值设置或调整为最小值。

公开(公告)号：US4287429A

公开(公告)日：1981-09-01

申请号：US62034

申请日：1979-07-30

Applicant: Oleg I. Bashnin ,  Vasily V. Semenov ,  Vasily N. Fedorov ,  Evgeny I. Rodionov ,  Boris A. Davidson ,  Gleb S. Schegolev

Inventor： Oleg I. Bashnin ,  Vasily V. Semenov ,  Vasily N. Fedorov ,  Evgeny I. Rodionov ,  Boris A. Davidson ,  Gleb S. Schegolev

IPC: F03B15/16 ,  H02P9/04 ,  F01D15/10

CPC classification number: F03B15/16 ,  H02P9/04 ,  F05B2200/11 ,  H02P2101/10 ,  Y02E10/226

Abstract: An apparatus for automatically controlling the active power produced by the generator of a hydraulic turbine-generator unit, comprising a frequency-responsive summing means having its inputs respectively connected to a reference signal source which develops an assigned power signal, to a power measuring means responsive to the active power produced by the generator, and to a gate opening sensing means responsive to the degree of opening of the hydraulic turbine gate apparatus, and its output connected to a control means for controlling the degree of opening of the gate apparatus. The frequency-responsive summing means is adapted to develop at its output a signal representative of an algebraic sum of the signal applied to its input connected to the reference signal source, the low-frequency components of the signal applied to its input connected to the power measuring means and the high-frequency components of the signal applied to its input connected to the gate opening sensing means.

Abstract translation: 一种用于自动控制由水轮机 - 发电机单元的发电机产生的有功功率的装置，包括频率响应求和装置，其频率响应求和装置将其输入分别连接到产生分配功率信号的参考信号源，以响应于功率测量装置 涉及由发电机产生的有功功率，以及响应于液压涡轮闸门装置的打开程度的闸门开启感测装置，其输出端连接到用于控制门装置的打开程度的控制装置。 频率响应求和装置适于在其输出处产生表示施加到其连接到参考信号源的输入的信号的代数和的信号，施加到其连接到功率的输入的信号的低频分量 测量装置和施加到其连接到闸门开启感测装置的输入端的信号的高频分量。