公开(公告)号：US06778417B2

公开(公告)日：2004-08-17

申请号：US10109049

申请日：2002-03-29

申请人： Kazuhiko Itakura ,  Hiroshi Shimamori ,  Kazutoshi Fuchigami ,  Tsunehiro Ohno

发明人： Kazuhiko Itakura ,  Hiroshi Shimamori ,  Kazutoshi Fuchigami ,  Tsunehiro Ohno

IPC分类号： H02M744

CPC分类号： H02M1/36 ,  H02M3/33592 ,  H02M2001/008 ,  Y02B70/1475

摘要： This electric-power supplying device comprises switching elements, rectifying elements, and a control circuit. The switching elements are switched according to a switching pulse so as to perform a rectification. The rectifying elements are connected in parallel with the switching elements so as to perform a rectification. The control circuit alters the switching pulse gradually upon switching between the rectification performed by the switching elements and the rectification performed by the rectifying elements.

摘要翻译： 该电力供给装置包括开关元件，整流元件和控制电路。 根据开关脉冲切换开关元件，进行整流。 整流元件与开关元件并联连接，从而进行整流。 在由开关元件进行的整流和整流元件的整流之间切换时，控制电路逐渐改变切换脉冲。

公开(公告)号：US06239997B1

公开(公告)日：2001-05-29

申请号：US09653478

申请日：2000-09-01

申请人： Doug D. Deng

发明人： Doug D. Deng

IPC分类号： H02M744

CPC分类号： H02M7/53875 ,  H02J3/38 ,  H02J3/40 ,  H02M2007/53876

摘要： A system (10) and method (100) for connecting and synchronizing a supplemental power supply (10) and a power grid. The present invention detects current feedback signals ia and ib and grid phase voltage input signals Ua—g, Ub—g, and Uc—g for controlling and synchronizing the three-phase output voltages Ua—p, Ub—p, and Uc—p, of the supplemental power supply (10) with the power grid. The method (100) of the present invention detects the three-phase voltages of both the supplemental power supply, Ua—p, Ub—p, Uc—p and the power grid Ua—g, Ub—g, Uc—g, and converts the detected voltages into components Ud—com, Uq—com on a d-q plane.

摘要翻译： 一种用于连接和同步补充电源（10）和电网的系统（10）和方法（100）。 本发明检测用于控制和同步三相输出电压Ua-p，Ub-p和Uc-p的电流反馈信号ia和ib以及电网相电压输入信号Ua-g​​，Ub-g和Uc-g ，补充电源（10）与电网。 本发明的方法（100）检测补充电源Ua-p，Ub-p，Uc-p和电网Ua-g，Ub-g，Uc-g和 将检测到的电压在dq平面上转换成分量Ud-com，Uq-com。

公开(公告)号：US06720744B2

公开(公告)日：2004-04-13

申请号：US10013746

申请日：2001-12-10

申请人： Richard L. Black ,  Graham Christensen ,  Benjamin Aaron Johnson ,  Shawn L. Leichliter ,  Robert C. Newman, Jr. ,  Stephen Spencer Thompson ,  Chenming Wu

发明人： Richard L. Black ,  Graham Christensen ,  Benjamin Aaron Johnson ,  Shawn L. Leichliter ,  Robert C. Newman, Jr. ,  Stephen Spencer Thompson ,  Chenming Wu

IPC分类号： H02M744

摘要： An apparatus in an electronic control system allows two or three wire operation. A power supply can supply power to the enclosed circuitry in both two and three wire installations. Two separate zero cross detectors are used such that timing information can be collected in both two and three wire installations. Both zero cross detectors are monitored and are used to automatically configure the electronic control. Over voltage circuitry senses an over voltage condition across a MOSFET which is in the off state and turns the MOSFET on so that it desirably will not reach the avalanche region. Over current circuitry senses when the current through the MOSFETs has exceeded a predetermined current threshold and then turns the MOSFETs off so they do not exceed the MOSFETs' safe operating area (SOA) curve. Latching circuitry is employed to keep the protection circuitry in effect even after a fault condition has cleared. Lockout circuitry is used to prevent one protection circuit from tripping after the other circuit has already tripped from a fault condition. The protection circuitry output is desirably configured such that it can bypass and override the normal turn on and turn off impedance and act virtually directly on the gates of the MOSFETs. Preferably, the system has a high efficiency switching type power supply in parallel with a low frequency controllably conductive device.

公开(公告)号：US06229725B1

公开(公告)日：2001-05-08

申请号：US09605482

申请日：2000-06-28

申请人： Keith E. Nielsen

发明人： Keith E. Nielsen

IPC分类号： H02M744

CPC分类号： H02M7/53871 ,  G01R31/42 ,  H02M2001/0009

摘要： The present invention discloses a method and system for sensing currents in a power converter. The system having two current sensing transformers each having two primary windings, a main transformer, and a plurality of switching elements. Each current sensing transformer uses one of its primary windings to sense rail current and the other primary winding to sense main transformer current. The method having a sensing a rail current using a first primary winding in a first current sensing transformer and a third primary winding in a second current sensing transformer, sensing a main transformer current using a second primary winding in the first current sensing transformer and a fourth primary winding in the second current sensing transformer, summing the current sensed in the first primary winding and the current sensed in the second primary winding in a secondary winding of the first current sensing transformer and creating a first virtual current therein, and summing the current sensed in the third primary winding and the current sensed in the fourth primary winding in a secondary winding of the second current sensing transformer and creating a second virtual current therein, wherein the first virtual current and the second virtual current are used to control an output of the power converter.

摘要翻译： 本发明公开了一种用于感测电力转换器中的电流的方法和系统。 该系统具有两个电流检测变压器，每个具有两个初级绕组，主变压器和多个开关元件。 每个电流感测变压器使用其一个初级绕组来感测轨道电流，另一个初级绕组用于感测主变压器电流。 该方法使用第一电流感测变压器中的第一初级绕组和第二电流感测变压器中的第三初级绕组来感测轨道电流，使用第一电流感测变压器中的第二初级绕组感测主变压器电流，以及第四 在第二电流感测变压器中的初级绕组，将在第一初级绕组中感测的电流与在第一电流感测变压器的次级绕组中感测的第二初级绕组中感测的电流相加，并在其中产生第一虚拟电流，并将感测的电流相加 在所述第三初级绕组中和在所述第四初级绕组中检测到的电流在所述第二电流感测变压器的次级绕组中，并在其中产生第二虚拟电流，其中所述第一虚拟电流和所述第二虚拟电流用于控制所述第二初级绕组的输出 电源转换器

公开(公告)号：US06381158B1

公开(公告)日：2002-04-30

申请号：US09688161

申请日：2000-10-16

申请人： Cyrus David Harbourt ,  Paul Michael Szczesny

发明人： Cyrus David Harbourt ,  Paul Michael Szczesny

IPC分类号： H02M744

CPC分类号： H02M7/487

摘要： A signal is injected into a neutral point regulator of an inverter drive. The response to that injected signal is monitored as an indication of the capacitance of the inverter drive.

摘要翻译： 信号被注入逆变器驱动器的中性点调节器。 监视对该注入信号的响应作为变频器驱动电容的指示。

公开(公告)号：US06348767B1

公开(公告)日：2002-02-19

申请号：US09695887

申请日：2000-10-25

申请人： Timothy Chen ,  Louis R. Nerone

发明人： Timothy Chen ,  Louis R. Nerone

IPC分类号： H02M744

CPC分类号： H02M1/425 ,  H05B41/28 ,  H05B41/282 ,  H05B41/3924 ,  Y02B20/183 ,  Y02B70/126

摘要： An electronic ballast is configured to receive the input from a power source in order to control operation of a lamp connected to the electronic ballast. The ballast includes a positive side bus voltage line and a ground reference line. An input section is connected to the power source, to the positive side bus voltage line and the ground reference line. A complementary pair of switches, connected to bus and to the resonant network, is controlled by a gate drive network. The gate drive network receives feedback signals that is coupled to transformer and controls operation of the set of switches using the received and further processed signals. A triac dimmer is connected between the power source and the input section for providing a dimming capability. A resonant network includes at least a first resonant capacitor connected to the resonant network and to at least one of the positive side bus voltage line and the ground reference line. A second resonant capacitor is connected to the first resonant capacitor and to the input section. At least a portion of resonant current from the second resonant capacitor is applied back to the input section. The portion of resonant current applied back to the input section is sufficient to maintain a minimum triac holding current. In another embodiment of the present invention, a lamp is connected within the ballast circuit such that a portion of its current is also fed to the input circuit.

摘要翻译： 电子镇流器被配置为从电源接收输入，以便控制连接到电子镇流器的灯的操作。 镇流器包括正侧总线电压线和接地参考线。 输入部分连接到电源，正极总线电压线和接地参考线。 连接到总线和谐振网络的互补开关对由栅极驱动网络控制。 栅极驱动网络接收耦合到变压器的反馈信号，并使用接收和进一步处理的信号来控制该组开关的操作。 三端双向可控硅调光器连接在电源和输入部分之间，用于提供调光能力。 谐振网络包括至少连接到谐振网络的第一谐振电容器和正侧母线电压线和接地参考线中的至少一个。 第二谐振电容器连接到第一谐振电容器和输入部分。 来自第二谐振电容器的谐振电流的至少一部分被施加回输入部分。 施加到输入部分的谐振电流部分足以保持最小的三端双向可控硅开关元件保持电流。 在本发明的另一个实施例中，一个灯连接在镇流器电路内，使得其一部分电流也被馈送到输入电路。

公开(公告)号：US06343027B1

公开(公告)日：2002-01-29

申请号：US09792508

申请日：2001-02-23

申请人： William J. Kerwin

发明人： William J. Kerwin

IPC分类号： H02M744

CPC分类号： H02M7/53832

摘要： An inverter includes a fourth order impedance network coupled between the output and the input of an amplifier, causing the inverter to oscillate and produce a high voltage at an output of the impedance network. The impedance of one portion of the impedance network is preferably at least ten times the impedance of a second portion of the impedance network at the frequency of oscillation.

摘要翻译： 逆变器包括耦合在放大器的输出和输入之间的四阶阻抗网络，使得逆变器在阻抗网络的输出处振荡并产生高电压。 阻抗网络的一部分的阻抗优选为振荡频率下阻抗网络的第二部分的阻抗的至少十倍。

公开(公告)号：US06201720B1

公开(公告)日：2001-03-13

申请号：US09507021

申请日：2000-02-18

申请人： John G. Tracy ,  Edward Akbari ,  Miguel E. Chavez ,  Frederick Tassitino, Jr.

发明人： John G. Tracy ,  Edward Akbari ,  Miguel E. Chavez ,  Frederick Tassitino, Jr.

IPC分类号： H02M744

CPC分类号： H02M7/53875 ,  H02J9/062 ,  H02M2007/53876

摘要： Uninterruptible power supplies (UPSs), power conversion apparatus and power conversion methods are provided which may improve phase regulation of polyphase AC voltages in the presence of load imbalances. According to one embodiment, a UPS includes a DC voltage generating circuit that produces a DC voltage. A space vector domain controlled inverter couples the DC voltage generating circuit to an AC load, and produces a polyphase AC output voltage at the load by sensing a plurality of voltages at the load, transforming the plurality of sensed voltages according to a space vector (d-q) transformation to produce an output space vector, generating an error space vector from the output space vector and a reference space vector, and selectively coupling the DC voltage generating circuit to the load responsive to the error space vector. In this manner, a voltage control loop is closed in the d-q domain, which may improve per-phase regulation of the polyphase AC output. Preferably, compensation is applied to the error space vector to produce a control space vector that compensates for poles or other transfer characteristics of the forward path of the voltage control loop. In another embodiment, the reference space vector is generated by an outer voltage amplitude loop that compares a sum of the plurality of output voltages at the load to a reference voltage amplitude, generating an error amplitude voltage which is compensated and then transformed according to a space vector transformation to produce the reference space vector that serves as the set point for the inner space vector domain control loop.

摘要翻译： 提供了不间断电源（UPS），电力转换装置和电力转换方法，可以在存在负载不平衡的情况下改善多相交流电压的相位调节。 根据一个实施例，UPS包括产生DC电压的DC电压产生电路。 空间矢量域控制的逆变器将直流电压产生电路耦合到交流负载，并且通过在负载下感测多个电压而在负载下产生多相交流输出电压，根据空间矢量（dq）变换多个感测电压 ）变换以产生输出空间矢量，从输出空间矢量和参考空间矢量生成误差空间矢量，并且响应于误差空间矢量选择性地将DC电压产生电路耦合到负载。 以这种方式，d-q域中的电压控制环闭合，这可以改善多相交流输出的每相调节。 优选地，对误差空间矢量进行补偿以产生补偿电压控制回路的正向通路的极点或其它传递特性的控制空间矢量。 在另一个实施例中，参考空间矢量由外部电压振幅回路产生，该外部电压振幅回路将负载时的多个输出电压的和与参考电压振幅进行比较，产生误差幅度电压，该电压被补偿然后根据空间进行变换 向量变换以产生用作内部空间矢量域控制环路的设定点的参考空间矢量。