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公开(公告)号：US07456696B2
公开(公告)日：2008-11-25
申请号：US11553528
申请日：2006-10-27
申请人： Fu-Chin Shen
发明人： Fu-Chin Shen
CPC分类号： H03K5/135 , H03H7/325 , H03K5/145 , H03K2005/00071 , H04L25/03885 , H04L25/08
摘要： The compensation circuit comprises an oscillator, a first variable delay line, a second variable delay line, a phase detector and a controller. The oscillator generates an oscillation signal to input into a first transmission line and a second transmission line. The first variable delay line receives the oscillation signal transmitted through the first transmission line. The second variable delay line receives the oscillation signal transmitted through the second transmission line. The phase detector compares the phases of the two oscillation signals from the variable delay lines to generate a phase difference signal. The controller adjusts the variable delay lines to compensate for asynchronous signal transmission of the transmission lines according to the phase difference signal.
摘要翻译： 补偿电路包括振荡器，第一可变延迟线，第二可变延迟线，相位检测器和控制器。 振荡器产生振荡信号以输入到第一传输线和第二传输线。 第一可变延迟线接收通过第一传输线传输的振荡信号。 第二可变延迟线接收通过第二传输线传输的振荡信号。 相位检测器比较来自可变延迟线的两个振荡信号的相位，以产生相位差信号。 控制器根据相位差信号调整可变延迟线，以补偿传输线的异步信号传输。
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公开(公告)号：US20230358455A1
公开(公告)日：2023-11-09
申请号：US18026184
申请日：2021-09-21
发明人： Masaki KOUNO , Reiji KAWASHIMA , Toshiyuki MAEDA , Keisuke OHTA
CPC分类号： F25B49/02 , H02J3/22 , H02J3/01 , H02J3/16 , H02J13/00007 , F25B2600/024 , F25B2700/21 , F25B2700/02
摘要： [Object] On the basis of a limit of an operation of a control unit that is connected to a power-receiving path of a converting unit, is electrically parallel with the converting unit, and controls apparent power in the power-receiving path of the converting unit, the operation of the control unit is controlled.
[Solution] A power control system includes: an acquisition section that acquires control unit information related to a limit of an operation by a control unit provided for a heat pump system that regulates temperature and/or humidity; and a control section that controls an operation of the control unit on the basis of the control unit information. The control unit is connected to a power-receiving path of a converting unit that converts received power and supplies the converted power to a load used for the regulating. The control unit is electrically parallel with the converting unit. The control unit controls apparent power in the power-receiving path.-
公开(公告)号：US11631976B2
公开(公告)日：2023-04-18
申请号：US16956474
申请日：2018-11-20
IPC分类号： H02J3/01 , F03D7/04 , H02M1/12 , H02J3/00 , H02J3/18 , H02J3/22 , H02J3/24 , H02J3/46 , H02J3/48 , H02J3/50 , H02J3/38
摘要： Harmonics of a power output of a power plant at a point of common coupling between the power plant and a utility grid, wherein the power plant comprises a plurality of energy production units. The method comprises determining an electrical characteristic at the point of common coupling; determining the electrical characteristic at an output terminal of each of the energy production units and dispatching a control signal to at least one of the energy production units to control the electrical characteristic at an output terminal of the respective energy production units. The control signal is based on the measurement of the electrical characteristic at the point of common coupling and arranged for damping the harmonic of the power output of the power plant at the point of common coupling, wherein the control signal is determined on the basis of a predetermined prioritizing sequence of said electrical characteristic.
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公开(公告)号：US20220069581A1
公开(公告)日：2022-03-03
申请号：US17310675
申请日：2020-02-13
发明人： Samuel James HILL
摘要： A method and apparatus are disclosed for indicating one or more characteristics associated with a power factor for a power line. The apparatus includes at least one feedback element for coupling to a power line that delivers electrical power from an Alternating Current (AC) source to a load and for providing a first feedback voltage that represents a voltage provided by the power line; at least one further feedback element for coupling to the power line for providing a further feedback voltage that represents a current provided by the power line; and at least one impedance element, having an electrical impedance, wherein a first potential difference across the impedance element that is responsive to a potential difference between the first feedback voltage and the further feedback voltage, indicates a characteristic associated with a power factor for the power line.
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5.发明申请DEVICE FOR STABLE SUBSEA ELECTRIC POWER TRANSMISSION TO RUN SUBSEA HIGH SPEED MOTORS OR OTHER SUBSEA LOADS 有权用于稳定的SUBSEA电力传输用于运行SUBSEA高速电机或其他SUBSEA负载的装置公开(公告)号：US20140203640A1
公开(公告)日：2014-07-24
申请号：US14240932
申请日：2012-09-11
申请人： Kjell Olav Stinessen
发明人： Kjell Olav Stinessen
CPC分类号： H02J3/22 , H02M5/32 , H02P5/74 , Y02E10/38 , Y10T307/406
摘要： The invention provides a device for operative connection between a subsea step out cable far end and subsea loads such as pumps, compressors and control systems, distinctive in that the device is a rotating frequency stepper device, more specifically a rotating step up or step down device, and it comprises: a motor and a generator operatively connected so that the motor drives the generator, at least one gas and/or liquid filled vessel into which at least one of the motor and generator are arranged, and the step out length is long, which means long enough to cause problems due to the Ferranti effect at frequency and power levels feasible for subsea pump and compressor motors, and where the device via the step out cable receives input electrical power at a low enough frequency to have stable transmission and the device, operatively connected to the subsea motor, delivers an output electrical frequency, amperage and voltage feasible for operation of the connected motors. System for pressure boosting of hydrocarbon fluid or other fluid subsea, comprising the device.
摘要翻译： 本发明提供了一种用于海底步进电缆远端和海底负载（例如泵，压缩机和控制系统）之间的操作连接的装置，其特征在于该装置是旋转频率步进装置，更具体地说是旋转升压或降压装置 ，其包括：电动机和发电机，其可操作地连接，使得所述电动机驱动所述发电机，至少一个气体和/或液体填充容器，所述电动机和发电机中的至少一个被布置在所述容器中，所述伸出长度为长 ，这意味着由于在海底泵和压缩机电机可能的频率和功率水平下的Ferranti效应而导致问题，并且其中经由输出电缆的装置以足够低的频率接收输入电力以具有稳定的传输，并且 装置，可操作地连接到海底马达，输送可用于连接的马达的操作的输出电频率，电流和电压。 包括该装置的烃流体或其它流体海底的增压系统。
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6.发明授权Switching power supply circuit, semiconductor device, and LED lighting device 失效开关电源电路，半导体器件和LED照明器件公开(公告)号：US08742693B2
公开(公告)日：2014-06-03
申请号：US13489167
申请日：2012-06-05
申请人： Masakazu Ikeda
发明人： Masakazu Ikeda
IPC分类号： H05B37/02 , H05B39/04 , H05B41/36 , G05F1/00 , H05B41/16 , H05B41/24 , H02J1/00 , H02J3/00 , H02J3/22
CPC分类号： G05F1/44 , H02M3/33507 , H05B33/0815
摘要： A switching power supply circuit includes a full-wave rectification circuit that performs full-wave rectification of an AC input voltage so as to generate a primary voltage, a transformer that transforms the primary voltage into a secondary voltage utilizing electromagnetic induction between first and second isolated windings, a rectifying and smoothing circuit that generates a DC output voltage from the secondary voltage so as to supply the DC output voltage to a load, a primary current control circuit that performs on/off control of primary current based on a result of comparison between a primary current detection voltage corresponding to the primary current flowing in the first winding and a first reference voltage, and a reference voltage correction circuit for monitoring an on-duty ratio of secondary current flowing in the second winding so as to correct the first reference voltage.
摘要翻译： 开关电源电路包括全波整流电路，其执行AC输入电压的全波整流以产生初级电压;变压器，其利用第一和第二隔离之间的电磁感应将初级电压转换为次级电压 绕组，整流和平滑电路，其从次级电压产生DC输出电压，以将DC输出电压提供给负载;基于电流的开/关控制的一次电流控制电路，其基于比较的结果， 对应于在第一绕组中流动的初级电流的初级电流检测电压和第一参考电压;以及参考电压校正电路，用于监视在第二绕组中流动的二次电流的占空比，以便校正第一参考电压 。
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公开(公告)号：US20240322568A1
公开(公告)日：2024-09-26
申请号：US18188086
申请日：2023-03-22
发明人： Yaseen Saleh , Wasseem Ali Khardawi
CPC分类号： H02J3/22 , H02J3/381 , H02J13/00002
摘要： A distribution system includes: at least one Power Management System (PMS) that controls electrical power transmitted by the distribution system; and a first power station located at an onshore platform including an onshore terminal that distributes electric power to the first power station and to at least one onshore load, a plurality of onshore reactors that monitor inbound reactive power received from the onshore terminal or that monitor outbound reactive power sent to a remote location, and an onshore synchronous motor that operates on the inbound reactive power received from the onshore terminal.
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公开(公告)号：US20230163592A1
公开(公告)日：2023-05-25
申请号：US17795880
申请日：2021-01-29
申请人： AKER SOLUTIONS AS
CPC分类号： H02J3/00125 , H02J13/00002 , H02J3/381 , H02J3/22 , F17D1/18 , H02J2300/28
摘要： An AC transmission system for a power transmission to an offshore plant. The AC transmission system includes an onshore power station which transmits an electric power, an offshore plant which receives the electric power, a submarine cable which connects the onshore power station to the offshore plant, and at least one pipeline with an electrical heating system which is connected to the onshore power station through the submarine cable.
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公开(公告)号：US10447041B2
公开(公告)日：2019-10-15
申请号：US15574854
申请日：2016-05-17
摘要： A dynamic line rating determination apparatus configured to control the current applied to a power line conductor by determining a dynamic maximum current rating for said power line conductor, based on measured voltage and current phase vectors taken at two temporally spaced sample times, the phase vectors including a voltage and current phase vector for each phase of electrical power carried by the power line conductor at a first and second end of the power line conductor; and determining the dynamic maximum current rating by; applying the phase vectors to a power line model to estimate the conductor temperature, applying the estimate to a thermal model to predict a steady state temperature that the power line conductor will reach, and calculate the dynamic maximum current rating based on the prediction of the steady state temperature, a power line conductor current, and a maximum temperature limitation value.
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公开(公告)号：US20180131189A1
公开(公告)日：2018-05-10
申请号：US15574854
申请日：2016-05-17
CPC分类号： H02J3/22 , H02J3/00 , H02J3/20 , H02J2003/003 , H02J2003/007 , Y02E60/76 , Y04S40/22
摘要： A dynamic line rating determination apparatus configured to control the current applied to a power line conductor by determining a dynamic maximum current rating for said power line conductor, based on measured voltage and current phase vectors taken at two temporally spaced sample times, the phase vectors including a voltage and current phase vector for each phase of electrical power carried by the power line conductor at a first and second end of the power line conductor; and determining the dynamic maximum current rating by; applying the phase vectors to a power line model to estimate the conductor temperature, applying the estimate to a thermal model to predict a steady state temperature that the power line conductor will reach, and calculate the dynamic maximum current rating based on the prediction of the steady state temperature, a power line conductor current, and a maximum temperature limitation value.
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