公开(公告)号：US12081020B2

公开(公告)日：2024-09-03

申请号：US18281362

申请日：2022-02-24

申请人： HITACHI ENERGY LTD

发明人： Nicklas Johansson ,  Jan Svensson ,  Panagiotis Bakas ,  Roberto Alves

IPC分类号： H02J3/00 ,  H02J3/24 ,  H02P13/00

CPC分类号： H02J3/001 ,  H02J3/241 ,  H02P13/00

摘要： A method for controlling an output voltage of at least one transformer in a power grid comprises providing the one transformer(s) with a power electronics converter and an output voltage controller, determining a grid frequency, comparing the grid frequency with a reference value, producing an error signal, applying the error signal as feedback to the controller, and generating a control action to cause the controller to change the output voltage of the transformer comprising a power electronics converter. The power electronics converter is an AC-AC converter, and the method comprises connecting the AC-AC converter to either a primary side or a secondary side of the transformer. The AC-AC converter has a first AC side and a second AC side and the method comprises connecting two terminals on the first AC side to a winding of the transformer, and connecting the second AC side to an external circuit line.

公开(公告)号：US10944315B2

公开(公告)日：2021-03-09

申请号：US16522924

申请日：2019-07-26

申请人： Rockwell Automation Technologies, Inc.

发明人： Patrick E. Ozimek ,  Jonathan D. Hoffman

IPC分类号： H02K41/035 ,  H02P13/00 ,  H02K41/02 ,  H02K41/03 ,  H02K11/215 ,  H02K11/04 ,  H02P7/292 ,  B60L13/00 ,  H02N1/00 ,  G01R33/09 ,  G05D3/14

摘要： Drive coils in sections of a linear motor track that are normally used to electromagnetically propel movers along the track when such movers are nearby can be used to generate a mid-bus voltage for the section when not being used to propel movers. Such drive coils not being used to propel movers are considered “idle” and available for mid-bus voltage generation. The mid-bus voltage, and a full-bus voltage from which the mid-bus voltage is derived, in turn, can be applied across other drive coils that are near movers with varying polarities and magnitudes to propel movers along the track. Track sensors can be positioned along the track to detect presences or absences of movers with respect to drive coils for determining propulsion of such movers or generation of the mid-bus voltage. Accordingly, power supplies can be used more efficiently by not requiring them to generate mid-bus voltages in addition to full-bus voltages and DC references.

公开(公告)号：US20180003760A1

公开(公告)日：2018-01-04

申请号：US15543063

申请日：2015-12-18

申请人： OMICRON ELECTRONICS GMBH

发明人： Dirk Flax ,  Markus Pütter

IPC分类号： G01R31/02 ,  H02P13/00

CPC分类号： G01R31/027 ,  H02P13/00

摘要： A transformer testing device (10) comprises outputs (31-33) for detachably connecting the transformer testing device to windings of multiple phases of a transformer (50). The transformer testing device (10) further comprises a plurality of sources (21-23), each of which is designed to generate a test signal. The transformer testing device (10) also comprises a switching matrix (40) that is connected between the plurality of sources (21-23) and the outputs (31-33).

公开(公告)号：US09654018B2

公开(公告)日：2017-05-16

申请号：US14696103

申请日：2015-04-24

申请人： LSIS CO., LTD.

发明人： Yong Kil Choi

IPC分类号： H02M5/458 ,  G01R35/02 ,  G01R19/12 ,  H01F27/42 ,  H02P13/00

CPC分类号： H02M5/458 ,  G01R19/12 ,  G01R35/02 ,  H01F27/425 ,  H02P13/00

摘要： A deviation compensation method of a potential transformer is provided. The deviation compensation method includes: detecting an output voltage value of a first potential transformer; checking a compensation value applied to the first potential transformer; compensating for the output voltage value based on the compensation value to measure an actual voltage value for a location at which the first potential transformer is installed; verifying the validity of the measured actual voltage value; and resetting a deviation compensator measuring the actual voltage value according to a result of verification on the validity of the actual voltage value.

公开(公告)号：US20130200722A1

公开(公告)日：2013-08-08

申请号：US13797534

申请日：2013-03-12

申请人： NUCURRENT, INC.

发明人： Vinit SINGH ,  Jacob BABCOCK ,  Christine A. FRYSZ

IPC分类号： H02P13/00

CPC分类号： H01Q1/38 ,  A61N1/0553 ,  A61N1/3605 ,  A61N1/37229 ,  A61N1/3756 ,  A61N1/3787 ,  B33Y80/00 ,  H01F5/00 ,  H01F5/003 ,  H01F7/06 ,  H01F17/00 ,  H01F17/0006 ,  H01F17/0013 ,  H01F17/02 ,  H01F21/005 ,  H01F27/28 ,  H01F27/2804 ,  H01F27/30 ,  H01F27/42 ,  H01F29/02 ,  H01F38/14 ,  H01F41/00 ,  H01F41/04 ,  H01F41/041 ,  H01F41/32 ,  H01F2027/2809 ,  H01Q7/00 ,  H01R43/00 ,  H01R43/20 ,  H02J7/025 ,  H02J17/00 ,  H02J50/12 ,  H02P13/00 ,  H03H7/01 ,  H04B5/0031 ,  H04B5/0037 ,  H04B5/0062 ,  H04B5/0068 ,  H04B5/0075 ,  H05B6/06 ,  H05B6/1245 ,  H05B6/36 ,  H05B6/362 ,  H05K1/165 ,  H05K2201/0352 ,  Y02B40/126 ,  Y10T29/49005 ,  Y10T29/4902 ,  Y10T29/4908 ,  Y10T29/49117 ,  Y10T29/49155 ,  Y10T29/49169 ,  Y10T29/49195

摘要： A multi-layer, multi-turn structure for an inductor having a plurality of conductor layers separated by layers of insulator is described. The inductor further comprises a connector electrically connected between the conductor layers. The structure of the inductor may comprise a cavity therewithin. The structure of the inductor constructed such that electrical resistance is reduced therewithin, thus increasing the efficiency of the inductor. The inductor is particularly useful at operating within the radio frequency range and greater.

摘要翻译： 描述了具有由绝缘体层隔开的多个导体层的电感器的多层多匝结构。 电感器还包括电连接在导体层之间的连接器。 电感器的结构可以包括其中的空腔。 电感器的结构使得电阻在其中减小，从而提高电感器的效率。 电感器在无线电频率范围内工作时特别有用。

公开(公告)号：US5943228A

公开(公告)日：1999-08-24

申请号：US086336

申请日：1998-05-29

申请人： Kook-Won Kim

发明人： Kook-Won Kim

IPC分类号： H04Q9/00 ,  H04N5/63 ,  H02P13/00

CPC分类号： H04N5/63 ,  G09G2300/026 ,  G09G2330/02

摘要： A method for switching the power to a display monitor with a remote controller includes the steps of: (a) selecting a power-on/off switch of the display monitor by means of the remote controller; (b) checking whether the power to the display monitor before activation of a remote control to select the power-on/off switch is "on" or "off"; (c) reading the power-on/off state of the display monitor from a memory according to the result of step (b); and (d) generating a power-on/off signal according to the power-on/off state read from the memory. An arrangement for switching the power to a display monitor carries out functions corresponding to the above steps.

摘要翻译： 用遥控器切换到显示器的功率的方法包括以下步骤：（a）通过遥控器选择显示监视器的通电/断电开关; （b）在激活遥控器以选择开机/关闭开关之前，检查显示器监视器的电源是否处于“开”或“关”状态。 （c）根据步骤（b）的结果从存储器读取显示监视器的通电/断开状态; 和（d）根据从存储器读取的电源接通/断开状态产生通电/断开信号。 用于切换到显示监视器的电源的布置执行与上述步骤相对应的功能。

公开(公告)号：US4410936A

公开(公告)日：1983-10-18

申请号：US340373

申请日：1982-01-18

申请人： Yoshikazu Suzuki

发明人： Yoshikazu Suzuki

IPC分类号： H02M3/28 ,  H02M3/335 ,  H02P13/00

CPC分类号： H02M3/33546 ,  H02M3/335

摘要： A switching power converter with high conversion efficiency has been found. The converter has a DC power source (1), a switching element (2), a transformer (3) so that said DC power source (1) supplies the primary power to the transformer (3) through the switching element (2). A rectifier and an output filter circuit are provided at the secondary side of the transformer (3). A parallel circuit with a capacitor (12) and a coil (13) is inserted in the primary current path, and a control circuit (14) controls the ON and/or OFF status of said switching element (2) so that the switching element (2) is turned to the ON status when the current in the coil (13) reaches a predetermined value which depends upon the output power of the present power converter, and said switching element (2) is turned to the OFF status after the current in said switching element (2) reaches zero. Since the current in the switching element is zero when the switching element is turned to the OFF status, no power loss occurs in the OFF transition, and thus, the conversion efficiency is improved.

摘要翻译： 已经发现具有高转换效率的开关电源转换器。 转换器具有直流电源（1），开关元件（2），变压器（3），使得所述直流电源（1）通过开关元件（2）将一次电源提供给变压器（3）。 整流器和输出滤波电路设置在变压器（3）的次级侧。 具有电容器（12）和线圈（13）的并联电路插入到初级电流路径中，并且控制电路（14）控制所述开关元件（2）的导通和/或截止状态，使得开关元件 （2）在线圈（13）中的电流达到取决于当前功率转换器的输出功率的预定值时，转到ON状态，并且所述开关元件（2）在电流 在所述开关元件（2）中达到零。 由于当开关元件变为OFF状态时开关元件中的电流为零，所以在OFF转换中不发生功率损耗，因此转换效率提高。

公开(公告)号：US4398120A

公开(公告)日：1983-08-09

申请号：US252808

申请日：1981-04-10

申请人： Jean Pierre Guillon

发明人： Jean Pierre Guillon

IPC分类号： H02M3/28 ,  H05G1/02 ,  H05G1/32 ,  H01J29/98 ,  H02M3/18 ,  H02P13/00

CPC分类号： H02M3/28 ,  H05G1/02 ,  H05G1/32 ,  Y10T307/305

摘要： A direct current supply, making it possible to produce a number of separate regulated voltages from a single regulated supply, constituted by a voltage multiplier with cascade-connected doubler stages. One of the doubler stages, preferably the first, supplies by the connection point of its two rectifiers at least one circuit for generating a complementary d.c. voltage. This generator circuit comprises a variable capacitor connected downstream to two oppositely connected diodes and connected to earth or to a fixed d.c. potential, one directly and the other across a resistor and a capacitor connected in parallel.

摘要翻译： 直流电源，可以由单个稳压电源产生多个单独的调节电压，由具有级联连接的倍频器级的电压倍增器构成。 倍增器级之一，优选地是第一级，由其两个整流器的连接点提供至少一个用于产生互补直流的电路。 电压。 该发电机电路包括连接到两个相对连接的二极管的下游的可变电容器，并连接到地或固定的直流电。 电位，一个直接和另一个跨过电阻和并联的电容器。

公开(公告)号：US4336585A

公开(公告)日：1982-06-22

申请号：US219773

申请日：1980-12-23

申请人： Robert M. Moriarty ,  John W. Walton ,  Samuel C. Caldwell

发明人： Robert M. Moriarty ,  John W. Walton ,  Samuel C. Caldwell

IPC分类号： H02M7/527 ,  H02P13/00

CPC分类号： H02M7/527 ,  H02M2007/4811

摘要： A selective commutation technique used with an inverter eliminates one of the two commutation pulses at those points at which there is a particular relationship of inverter operating characteristics. The power factor angle .theta., the voltage phase angle .delta., and the voltage pattern notch angle .beta. are sensed to determine this particular relationship. Because at the switching point there is no current flowing through the gated thyristor, the gated thyristor can then be transitioned to the nonconducting state merely by the removal of its gate signal. A single makeup pulse is then rung through the system to initialize the commutation capacitors for the next switch point.

摘要翻译： 与逆变器一起使用的选择性换向技术在那些具有逆变器工作特性的特定关系的点消除了两个换向脉冲之一。 感测功率因数角度θ，电压相位角度Δ和电压模式切口角度β以确定该特定关系。 因为在开关点没有电流流过门控晶闸管，所以门控晶闸管可以仅通过去除其栅极信号而转变到非导通状态。 然后，单个补充脉冲通过系统梯级，以初始化下一个切换点的换向电容器。

公开(公告)号：US4172277A

公开(公告)日：1979-10-23

申请号：US875538

申请日：1978-02-06

申请人： Denis Pinson

发明人： Denis Pinson

IPC分类号： H02M3/335 ,  H02M7/00 ,  H02P13/00

CPC分类号： H02M3/33546

摘要： A system for controlling chopping for a converter in a DC electrical power supply.A transistor is arranged for chopping the DC input voltage which is connected to a chopping transformer. A control transistor controls the chopping transistor by means of pulses which it receives from a clock, via a pulse transformer.

摘要翻译： 一种用于控制直流电源中的转换器的斩波的系统。