公开(公告)号：US06636405B2

公开(公告)日：2003-10-21

申请号：US09977640

申请日：2001-10-11

申请人： Michael Z. Lowenstein

发明人： Michael Z. Lowenstein

IPC分类号： H02H100

CPC分类号： H02J3/01 ,  Y02E40/40

摘要： In a multiple phase system for supplying power from an AC source to nonlinear loads, a device for substantially eliminating currents in a neutral wire. The device includes a completely-passive parallel resonant circuit having three passive electrical branches connected in parallel tuned to a third harmonic frequency of the AC source. The three branches comprise a first branch consisting of a capacitor, a second branch consisting of a reactor, and a third branch consisting of a resistor. The resonant circuit is connected to the neutral wire.

公开(公告)号：US20030160515A1

公开(公告)日：2003-08-28

申请号：US10237281

申请日：2002-09-09

发明人： Luke Yu ,  Henry Yu

IPC分类号： H02J001/02

CPC分类号： H02J3/01 ,  Y02E40/40

摘要： A broad-spectrum harmonic filter is developed. This filter is to be connected in series ahead of the load which generates harmonics. This filter basically consists of 3 fixed elements, i.e. a series reactor and a shunt reactor in series with a capacitor. It can function to completely filter out 5th harmonic current in 3 phase systems (or 3rd harmonic current in single phase systems) and to reduce other harmonic components by high percentages say, typically close to 70%. Thus the portions of various harmonics flowing toward the electrical power source can be held within acceptable limits. By adjusting these two reactors and the capacitor, a desirable and controllable filtering performance can be achieved. A satisfactory performance of the filter and the electrical system can be expected by use of this invented filter with only 3 major elements. A voltage compensator, a reactor of nullnegative valuenull is recommended to compensate for the harmonic voltage distortion across the series reactor (or the filter), if necessary, or to compensate for the voltage drops under power frequency operations.

摘要翻译： 开发了广谱谐波滤波器。 该滤波器将在产生谐波的负载之前串联连接。 该滤波器基本上由3个固定元件组成，即串联电抗器和与电容器串联的分流电抗器。 它可以用于完全滤除三相系统中的5次谐波电流（或单相系统中的三次谐波电流），并以通常接近70％的高百分比来减少其他谐波分量。 因此，流向电源的各种谐波的部分可以保持在可接受的限度内。 通过调节这两个电抗器和电容器，可以实现期望和可控的滤波性能。 通过使用仅具有3个主要元件的本发明的过滤器可以期望过滤器和电气系统的令人满意的性能。 建议使用电压补偿器，“负值”电抗器，以补偿串联电抗器（或滤波器）上的谐波电压失真，如有必要，或补偿电源频率下的电压降。

公开(公告)号：US20030062774A1

公开(公告)日：2003-04-03

申请号：US10203950

申请日：2002-08-14

发明人： Gerardo Escobar ,  Alex M. Stankovic ,  Paolo Mattavelli

IPC分类号： H02J007/00

CPC分类号： H02J3/01 ,  H02J9/00 ,  H02M2007/53876 ,  Y02E40/40 ,  Y10T307/615

摘要： A controller (236) for an uninterruptible power supply (UPS) compensates for harmonic distortion in the output current (224,26,228). The controller also provides a control vector (230) also with input from the adaptation processor (234).

摘要翻译： 用于不间断电源（UPS）的控制器（236）补偿输出电流中的谐波失真（224,26,228）。 控制器还提供来自适配处理器（234）的输入的控制向量（230）。

公开(公告)号：US06486570B1

公开(公告)日：2002-11-26

申请号：US09618498

申请日：2000-07-18

申请人： Edward G. Price ,  Theodore Thibault ,  Andrew Pickett

发明人： Edward G. Price ,  Theodore Thibault ,  Andrew Pickett

IPC分类号： H02J102

CPC分类号： H02J3/01 ,  Y02E40/40

摘要： A waveform correction filter is connected into an alternating current power line to absorb and remove various forms of power pollution, including high-frequency spikes, surges and other forms of high-frequency oscillations, such as those which result from switching inductive loads on and off. The waveform correction filter of the invention includes a fuse and a coaxial amorphous toroidal inductor connected between a power line and neutral with a low-pass filter connected in series with the fuse and coaxial amorphous toroidal inductor. The filter includes a capacitor, a varistor connected in parallel with said capacitor, and a magnetic core inductor connected in series with each other and in parallel with the capacitor and said varistor. A lamp may be connected in series with the resistor and the magnetic core inductor or across the resistor. Various arrangements are shown for connecting a plurality of the waveform correction filters into single phase or three-phase Wine or delta circuits.

摘要翻译： 波形校正滤波器连接到交流电源线中以吸收和去除各种形式的功率污染，包括高频尖峰，浪涌和其他形式的高频振荡，例如由开关感应负载和断开产生的那些 。 本发明的波形校正滤波器包括一个熔断器和一个连接在电源线和中性点之间的同轴无定形环形电感器，并具有与保险丝和同轴非晶环形电感器串联连接的低通滤波器。 滤波器包括电容器，与所述电容器并联连接的变阻器，以及与电容器和所述变阻器并联并联的串联连接的磁芯电感器。 灯可以与电阻器和磁芯电感器或电阻器串联连接。 示出了将多个波形校正滤波器连接成单相或三相葡萄酒或三角洲电路的各种布置。

公开(公告)号：US06472775B1

公开(公告)日：2002-10-29

申请号：US09683203

申请日：2001-11-30

申请人： Fengtai Huang ,  Bing Cheng

发明人： Fengtai Huang ,  Bing Cheng

IPC分类号： H02J102

CPC分类号： H02M1/12 ,  H02J3/01 ,  H02M7/53875 ,  Y02E40/40

摘要： In one embodiment, a harmonic feedback system is characterized by: a three-phase to two-phase transformer configured to convert an output fundamental frequency current from a distributed power system and to convert the output fundamental frequency current from a three-phase current to a two-phase stationary reference current; a harmonic frequency transformer configured to convert the two-phase stationary reference current to a synchronous reference current, said harmonic frequency transformer having a target synchronous reference frame frequency based upon a reference harmonic current of the output fundamental frequency current; at least one filter device configured to remove predetermined components from the synchronous reference current to output a harmonic feedback current; a summation component to compare the harmonic feedback current with the reference harmonic current and to output a harmonic error current for driving the distributed power system to produce the output current.

摘要翻译： 在一个实施例中，谐波反馈系统的特征在于：三相到二相变压器被配置为转换来自分布式电力系统的输出基频电流，并将输出基频电流从三相电流转换为 两相静止参考电流; 谐波变压器，其被配置为将所述两相固定基准电流转换为同步参考电流，所述谐波变压器基于所述输出基频电流的基准谐波电流具有目标同步参考帧频率; 至少一个滤波器装置，被配置为从所述同步参考电流中去除预定分量以输出谐波反馈电流; 将谐波反馈电流与参考谐波电流进行比较，并输出用于驱动分布式电力系统产生输出电流的谐波误差电流的求和分量。

公开(公告)号：US20020101743A1

公开(公告)日：2002-08-01

申请号：US09859054

申请日：2001-05-16

申请人： Dip-Digital Power Ltd.

发明人： Ron Kallus ,  Prosper Dahan

IPC分类号： H02J003/00

CPC分类号： H02M1/4258 ,  H02J3/01 ,  H02M2001/007 ,  Y02B70/126 ,  Y02E40/40

摘要： A power line separator, comprising an input for connecting to a source of AC line voltage, an output for connecting to at least one user appliance intended for operation with a source of AC power having similar characteristics to the AC line voltage, and a front-end power factor correction unit coupled between the input and the output for producing from the AC line voltage a sinusoidal voltage that causes no distortion of the AC line voltage, while providing power to none-linear load, or loads with imaginary portion (reactive/inductive).

摘要翻译： 一种电力线分离器，包括用于连接到AC线路电压源的输入端，用于连接到用于与具有与AC线路电压具有相似特性的交流电源的操作的至少一个用户设备的输出端， 耦合在输入和输出之间的端部功率因数校正单元，用于从AC线电压产生正弦电压，该正弦电压不引起AC线电压的失真，同时为非线性负载提供功率，或者具有虚部（无功/电感 ）。

公开(公告)号：US20020017973A1

公开(公告)日：2002-02-14

申请号：US09797415

申请日：2001-03-01

发明人： John Desmond Ainsworth

IPC分类号： H01F021/08

CPC分类号： H02J3/01 ,  Y02E40/40

摘要： A tuned filter for connection to a busbar in a high voltage electric power system. The filter incorporates a variable inductor comprising a main winding, auxiliary windings and switching circuitry associated with each auxiliary winding. The auxiliary windings are arranged to act in inductive series with respect to the main winding, and the switching circuitry is used to selectively connect the auxiliary windings in electrical series with the main winding, so allowing the inductance of the inductor to be varied. To achieve enhanced variability of the inductance, each auxiliary winding has a number of turns substantially equal to x2(nnull1) where n is a positive integer corresponding to the position of each auxiliary winding in the inductive series of auxiliary windings and x is also a positive integer. The switching circuitry is preferably constituted such that each auxiliary winding is selectively connectable to the main winding in any one of three connection modes, comprising a first connection mode in which the auxiliary winding assists the inductance of the main winding, a second connection mode in which the auxiliary winding opposes the inductance of the main winding, an a third connection mode in which the auxiliary winding is bypassed with respect to the main winding.

摘要翻译： 用于连接到高压电力系统中母线的调谐滤波器。 滤波器包括可变电感器，其包括与每个辅助绕组相关联的主绕组，辅助绕组和开关电路。 辅助绕组被布置为相对于主绕组感应串联起动，并且开关电路用于选择性地将辅助绕组与主绕组电连接，从而允许电感器的电感变化。 为了实现电感的增强的可变性，每个辅助绕组的匝数基本上等于x2（n-1），其中n是对应于辅助绕组的感应系列中每个辅助绕组的位置的正整数，x也是 一个正整数。 开关电路优选地构成为使得每个辅助绕组以三种连接模式中的任何一种选择性地连接到主绕组，包括辅助绕组辅助主绕组的电感的第一连接模式，其中第二连接模式 辅助绕组与主绕组的电感相反，辅助绕组相对于主绕组旁路的第三连接模式。

公开(公告)号：US6009004A

公开(公告)日：1999-12-28

申请号：US140247

申请日：1998-08-26

申请人： Mahesh Mysore Swamy

发明人： Mahesh Mysore Swamy

IPC分类号： H02J3/01 ,  H02M1/12

CPC分类号： H02M1/4266 ,  H02J3/01 ,  Y02B70/123 ,  Y02E40/40

摘要： Disclosed is a new single-phase passive harmonic filter for one or more nonlinear loads. The filter improves the total system performance by drastically reducing the line side current harmonics generated by nonlinear loads. The filter includes two inductive portions across one of which is connected a tuning capacitor. The parallel combination of one inductive portion with the tuning capacitor forms a series tuned filter configuration while the second inductive portion is used for harmonic attenuation. A shunt capacitor is employed for shunting higher order harmonic components. A single-phase passive voltage regulator provides the needed voltage bucking to prevent over voltage at the load terminals of the filter. The filter provides an alternate path for the harmonic currents generated by nonlinear loads. The over voltage caused by the increased capacitive reactance is controlled by either capacitor switching or by the use of the passive voltage regulator or a combination of the two. Capacitor switching is dependent upon load conditions.

摘要翻译： 公开了一种用于一个或多个非线性负载的新型单相无源谐波滤波器。 滤波器通过大幅度减少由非线性负载产生的线路侧电流谐波来提高总系统性能。 滤波器包括两个电感部分，其中一个电感部分连接有调谐电容器。 一个电感部分与调谐电容器的并联组合形成串联调谐滤波器配置，而第二电感部分用于谐波衰减。 采用并联电容器分流高次谐波分量。 单相无源电压调节器提供所需的电压降压，以防止过滤器负载端子处的过电压。 滤波器为非线性负载产生的谐波电流提供了一条备用路径。 由增加的容性电抗引起的过电压由电容器切换或使用无源电压调节器或两者的组合控制。 电容开关取决于负载条件。

公开(公告)号：US5986907A

公开(公告)日：1999-11-16

申请号：US973249

申请日：1998-04-01

申请人： Rudolf Limpaecher

发明人： Rudolf Limpaecher

IPC分类号： H02J3/01 ,  H02J3/18 ,  H02M3/18

CPC分类号： H02J3/01 ,  H02J3/1814 ,  Y02E40/18 ,  Y02E40/40

摘要： A method of transferring energy from a power source into an output node including the steps of separately charging each of a plurality of energy storage elements from the power source; after the plurality of energy storage elements are charged, discharging a selected one of the energy storage elements through an inductive element into the output node; and as the selected energy storage element is being discharged through the inductive element, when its voltage reaches a preselected value, discharging another one of the energy storage elements through the inductive element into the output node.

摘要翻译： PCT No.PCT / US96 / 10740 Sec。 371日期：1998年4月1日 102（e）1998年4月1日PCT PCT 1996年6月21日PCT公布。 出版物WO97 / 01213 PCT 日期1997年1月9日一种将能量从电源传输到输出节点的方法，包括从电源分别对多个能量存储元件分别充电的步骤; 在多个能量存储元件被充电之后，通过电感元件将选定的一个能量存储元件放电到输出节点中; 并且当所选择的能量存储元件通过电感元件放电时，当其电压达到预选值时，通过电感元件将另一个能量存储元件放电到输出节点中。

公开(公告)号：US5886888A

公开(公告)日：1999-03-23

申请号：US638054

申请日：1996-04-26

申请人： Masahiko Akamatsu ,  Shinzo Tamai ,  Fuminori Nakamura ,  Shotaro Murakami ,  Tomohiko Aritsuka ,  Takeaki Asaeda

发明人： Masahiko Akamatsu ,  Shinzo Tamai ,  Fuminori Nakamura ,  Shotaro Murakami ,  Tomohiko Aritsuka ,  Takeaki Asaeda

IPC分类号： H02M7/155 ,  H02J3/01 ,  H02J3/36 ,  H02M7/12 ,  H02M7/17 ,  H02M7/19 ,  H02M7/72 ,  H02M7/515

CPC分类号： H02J3/36 ,  H02J3/01 ,  H02M7/17 ,  H02M7/19 ,  H02M7/493 ,  H02M7/23 ,  H02M7/25 ,  H02M7/487 ,  Y02E40/10 ,  Y02E40/40 ,  Y02E60/60

摘要： A voltage source type power converting apparatus having voltage source type power converter units and phase-shifting transformers. The transformers have either a common multiple-phase primary winding or a group of parallel connected multiple-phase primary windings, either of which being connected in parallel or series to a multiple-phase AC system. The transformer further include a group of multiple-phase secondary windings with phase differences with respect to each other and which are connected to voltage source type power converter units. The voltage source type power converter units are operated with the phase differences. Accordingly, the construction of the multiplexing phase-shifting transformer is simple, and fundamental electric variables can be controlled by a simple phase controlling operation. In addition, a higher harmonic defect of the AC system can be reduced, and the DC voltage can be easily raised.

摘要翻译： 一种具有电压型功率转换器单元和移相变压器的电压型电力转换装置。 变压器具有公共多相初级绕组或一组并联的多相初级绕组，其中任一个并联或串联连接到多相AC系统。 该变压器还包括一组相对于彼此具有相位差并连接到电压源型功率转换器单元的多相次级绕组。 电压源式功率转换器单元以相位差运行。 因此，复用移相变压器的构造简单，可以通过简单的相位控制操作来控制基本的电变量。 此外，可以降低AC系统的高次谐波缺陷，并且可以容易地提高DC电压。