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21.发明授权Naturally commutated cycloconverter with controlled input displacement power factor 失效具有控制输入位移功率因数的自然通用循环切换器
公开(公告)号：US4013937A
公开(公告)日：1977-03-22
申请号：US593813
申请日：1975-10-09
Applicant: Brian R. Pelly , Laszlo Gyugyi
Inventor： Brian R. Pelly , Laszlo Gyugyi
CPC classification number: H02J3/1835 , H02M5/271 , Y02E40/30
Abstract: A naturally commutated cycloconverter having at the input a source of higher frequency than at its output is used as a static reactive power generator to correct displacement angle in an alternating current power system when coupled thereto at the output. Reactive power correction is obtained with such "high frequency link" by automatically controlling the output voltage of the cycloconverter so as to deviate by a required amount from the AC power system voltage. At the same time, a circulating current is established between the positive and negative banks of thyristors of the cycloconverter of such a magnitude as to compensate for the variations of the lagging quadrature component of the input current of the cycloconverter caused by output current variations, thereby permitting optimization of the high frequency link.The concept of generating controllable reactive power with a naturally commutated cycloconverter is used (1) with one cycloconverter as a controllable source of reactive power coupled to a power system; (2) with two cycloconverters tying a power system with a load, or two power systems together. In either instance, the output voltage of the cycloconverter is controlled for automatic compensation in the line power factor, and concurrently a circulating current is established in the single or in the two cycloconverters for automatic correction against variations in the lagging current at the cycloconverter input when the load conditions at the output thereof vary.
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公开(公告)号：US20080180164A1
公开(公告)日：2008-07-31
申请号：US12055982
申请日：2008-03-26
Applicant: Brian R. Pelly
Inventor： Brian R. Pelly
CPC classification number: H02M1/12 , H02M5/458 , H02M2001/123 , H02P29/50 , H02P2201/07
Abstract: An active filter for reducing the common mode current in a pulse width modulated drive circuit driving a load, said drive circuit comprising an a-c source, a rectifier connected to said a-c source and producing a rectified output voltage connected to a positive d-c bus and a negative d-c bus, a PWM inverter having input terminals coupled to said positive d-c bus and negative d-c bus and having a controlled a-c output, a load driven by said a-c output of said PWM inverter, a ground wire extending from said load, and a current sensor for measuring the common mode current in said drive circuit, said current sensor producing an output current related to said common mode current; said active filter comprising a first and second transistor, each having first and second main electrodes and a control electrode, and an amplifier circuit driving said transistors; said first electrode of said first and second transistor coupled to a common node, said second electrodes of said first and second transistors being coupled to said positive d-c bus and said negative d-c respectively; said amplifier circuit having an input coupled to said output of said current sensor and having an output connected to said control electrodes; and a d-c isolating capacitor connecting said common node of said first electrode of said first and second transistors to said ground wire; and wherein said current sensor is a current transformer having a primary winding connected in series with said ground wire and a secondary winding connected as the signal input to the amplifier circuit.
Abstract translation: 一种有源滤波器，用于降低驱动负载的脉宽调制驱动电路中的共模电流，所述驱动电路包括交流电源，连接到所述交流源的整流器，并产生与正直流母线相连的整流输出电压和负的 DC总线，PWM逆变器，其具有耦合到所述正直流总线和负直流总线的输入端子，并且具有受控的交流输出，由所述PWM逆变器的所述交流输出驱动的负载，从所述负载延伸的接地线，以及电流传感器 用于测量所述驱动电路中的共模电流，所述电流传感器产生与所述共模电流相关的输出电流; 所述有源滤波器包括第一和第二晶体管，每个具有第一和第二主电极和控制电极，以及驱动所述晶体管的放大器电路; 所述第一和第二晶体管的所述第一电极耦合到公共节点，所述第一和第二晶体管的所述第二电极分别耦合到所述正d-c总线和所述负d-c; 所述放大器电路具有耦合到所述电流传感器的所述输出并具有连接到所述控制电极的输出的输入; 以及将所述第一和第二晶体管的所述第一电极的所述公共节点连接到所述接地线的d-c隔离电容器; 并且其中所述电流传感器是具有与所述接地线串联连接的初级绕组的电流互感器和作为输入到放大器电路的信号的次级绕组。
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公开(公告)号：US6038155A
公开(公告)日：2000-03-14
申请号：US302777
申请日：1999-04-30
Applicant: Brian R. Pelly
Inventor： Brian R. Pelly
CPC classification number: H02M1/36 , H02M7/1626
Abstract: A soft start circuit for controlling a rectifier circuit, the rectifier circuit for converting power from an AC source having one or more phases to DC power having an output voltage (Vo) from a Vo+ node to a Vo- node, the rectifier circuit including: (i) at least first and second rectifier legs coupled from the Vo- node to the Vo+ node, each rectifier leg including a diode and a silicon controlled rectifier (SCR), wherein anodes of the diodes are coupled to the Vo- node, cathodes of the diodes are coupled to anodes of the SCRs at AC input nodes, and cathodes of the SCRs are coupled to the Vo+ node; and (ii) a bus capacitor coupled from the Vo+ node to the Vo- node, the soft start circuit operable to control respective firing angles of the SCRs such that: (i) the output voltage substantially linearly ramps from a low initial value to a relatively high final value, and (ii) charge up currents into the bus capacitor are controlled.
Abstract translation: 一种用于控制整流电路的软启动电路，用于将具有一个或多个相的AC电源的功率转换成具有从Vo +节点到Vo节点的输出电压（Vo）的DC电力的整流器电路，所述整流器电路包括： （i）从Vo节点耦合到Vo +节点的至少第一和第二整流器支脚，每个整流器支腿包括二极管和可控硅整流器（SCR），其中二极管的阳极耦合到Vo节点，阴极 的二极管耦合到AC输入节点处的SCR的阳极，并且SCR的阴极耦合到Vo +节点; 以及（ii）从所述Vo +节点耦合到所述Vo节点的总线电容器，所述软启动电路可操作以控制所述SCR的各个触发角度，使得：（i）所述输出电压基本上从低初始值向 相对较高的最终值，（ii）对总线电容器的充电电流进行控制。
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公开(公告)号：US6009008A
公开(公告)日：1999-12-28
申请号：US52271
申请日：1998-03-31
Applicant: Brian R. Pelly
Inventor： Brian R. Pelly
Abstract: A soft start bridge rectifier circuit is described for controlling the operation of the bridge rectifier in order to ramp up the DC output upon connection with the AC input in order to limit in-rush current. Additionally, short-circuit/overload protection, temporary line loss protection and undervoltage checking circuitry is provided.
Abstract translation: 描述了一种软启动桥式整流电路，用于控制桥式整流器的工作，以便在与AC输入连接时斜升直流输出，以限制浪涌电流。 另外，还提供短路/过载保护，临时线路损耗保护和欠压检查电路。
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公开(公告)号：US5982136A
公开(公告)日：1999-11-09
申请号：US784233
申请日：1997-01-16
Applicant: Brian R. Pelly
Inventor： Brian R. Pelly
CPC classification number: H02H7/1216 , H02H1/0007 , H02M5/458 , H02P27/08 , H02M2001/0009
Abstract: The invention relates to a circuit and method for sensing inverter current in a motor drive power train for purposes of detecting overload and fault conditions, based on the use of simple low cost ac current transformers and/or a low cost current-viewing resistor with non-critical inductance characteristics. The invention employs a current-viewing resistor in the negative dc bus of the inverter and a current transformer, connected in series with the current-viewing resistor, which is coupled to detect the current in the smoothing capacitor of the inverter circuit. If a motor braking circuit is included, the voltage developed across the braking resistor is summed with the inverter current signal to obtain a signal indicative of the total current in the inverter circuit. In accordance with another embodiment, a respective current transformer is coupled to each leg of the ac input line and a further current transformer is coupled to sense the filter capacitor current. The positive components of the three phase ac input line signal are added in an operational amplifier to the capacitor to obtain the total inverter current, which can then be compared to a reference signal.
Abstract translation: 本发明涉及一种基于使用简单的低成本交流电流互感器和/或具有非低成本交流电流互感器的低成本电流检测电阻器来检测电动机驱动传动系中的逆变器电流的电路和方法，用于检测过载和故障状况 临界电感特性。 本发明在逆变器的负直流母线中使用电流检测电阻器和与电流检测电阻器串联连接的电流互感器，其连接以检测逆变器电路的平滑电容器中的电流。 如果包括电动机制动电路，则跨过制动电阻器产生的电压与逆变器电流信号相加，以获得表示逆变器电路中的总电流的信号。 根据另一个实施例，相应的电流互感器耦合到交流输入线的每个支路，并且另外的电流互感器被耦合以感测滤波电容器电流。 将三相交流输入线路信号的正向分量加到运算放大器中，以获得总逆变器电流，然后将其与参考信号进行比较。
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Patent Agency Ranking
公开(公告)号：US5574610A
公开(公告)日：1996-11-12
申请号：US323271
申请日：1994-10-14
Applicant: Henry N. Tachick , Brian R. Pelly
Inventor： Henry N. Tachick , Brian R. Pelly
Abstract: An electrical isolation device is connected at input terminals in lines between a structure to be cathodically protected and a ground, or between two cathodically protected structures, to block selected low levels of DC voltage while freely conducting normal AC currents and all fault currents. The device has two diode stacks, formed of layers, and the stacks are connected in parallel with one another in opposite polarity and in parallel with a capacitor across the input terminals of the device. Each diode layer include a junction wafer and a conducting metal disk. The layers in each stack are preferably pressed tightly together and to metal bus conductors by a clamp to maximize the contact of the diode layers to each other and to the conductors to minimize contact resistance. AC currents are conducted (e.g., to ground) through the capacitor while low level DC voltages are blocked by the cumulative threshold voltages of the plural diode layers connected in series in each of the stacks. When a large AC or DC fault occurs, the voltage across a stack exceeds the turn-on voltage of the stack so that fault currents are conducted to ground through the diode stacks. The number of diodes in each stack may be selected to provide a continued cathodic protection voltage in the presence of large AC fault currents. The diode stacks may also be connected together in a bridge structure to reduce the number of diodes required.
Abstract translation: 电绝缘装置连接在要被阴极保护的结构和接地之间或两个阴极保护结构之间的线路中的输入端子处，以阻止选定的低电平的DC电压，同时自由地传导正常的交流电流和所有的故障电流。 该器件具有由层构成的两个二极管叠层，并且堆叠以相反的极性相互并联并且与器件的输入端上的电容器并联连接。 每个二极管层包括接合晶片和导电金属盘。 每个堆叠中的层优选通过夹具紧紧地压在一起并连接到金属总线导体，以使二极管层彼此和导体之间的接触最大化，以使接触电阻最小化。 交流电流通过电容器进行（例如，接地），而低电平的直流电压被每个堆叠中串联连接的多个二极管层的累积阈值电压阻挡。 当发生大的交流或直流故障时，堆叠上的电压超过堆叠的导通电压，故故障电流通过二极管堆叠传导到地。 可以选择每个堆叠中的二极管的数量以在存在大的AC故障电流的情况下提供持续的阴极保护电压。 二极管堆叠也可以以桥式结构连接在一起以减少二极管的数量。
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27.发明授权
公开(公告)号：US5455758A
公开(公告)日：1995-10-03
申请号：US198212
申请日：1994-02-17
Applicant: Brian R. Pelly
Inventor： Brian R. Pelly
CPC classification number: H02M3/337 , H02M3/158 , Y02B70/1425 , Y02B70/1433
Abstract: A resonant power supply for use in conjunction with power transistor switching circuits. In one embodiment, a series-connected LC resonant circuit is coupled to the high voltage pulsed output of the power transistors and designed to draw power from the pulsed output and deliver the same to a low voltage output capacitor at which a low voltage output is provided. The low voltage output is regulated by a zener diode connected in parallel with the output capacitor. A starting resistor of a relatively high value, typically in the Megohm range, supplies initial charge to the output capacitor to permit the first switching event to occur so that the resonant power supply can begin to provide power. The resonant frequency of the LC circuit is significantly higher than the maximum switching frequency of the power transistors, enabling the resonating high frequency wave forms of the LC circuit to supply repeated charge bursts to the output capacitor.
Abstract translation: 与功率晶体管开关电路结合使用的谐振电源。 在一个实施例中，串联连接的LC谐振电路耦合到功率晶体管的高电压脉冲输出，并被设计成从脉冲输出引出功率并将其传送到提供低电压输出的低电压输出电容器 。 低压输出由与输出电容并联连接的齐纳二极管调节。 典型地在兆欧范围内具有较高值的起动电阻器将初始电荷提供给输出电容器，以允许发生第一次开关事件，使得谐振电源可以开始提供电力。 LC电路的谐振频率明显高于功率晶体管的最大开关频率，使得LC电路的谐振高频波形能够向输出电容器提供重复的电荷脉冲串。
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公开(公告)号：US5047912A
公开(公告)日：1991-09-10
申请号：US580101
申请日：1990-03-09
Applicant: Brian R. Pelly
Inventor： Brian R. Pelly
CPC classification number: H02M1/4225 , H02M3/1563 , H02M7/217 , Y02B70/126 , Y02P80/112
Abstract: A four-terminal, unity power factor, electronic rectifier module. The electronic rectifier module is self-contained and includes therein bridge diodes which form a full wave bridge rectifier, a control circuit, and a diode which components act together to draw a sinusoidal current from the line. The self-contained, four-terminal module is designed to permit a high-frequency input capacitor and a line inductor to be connected to its input terminals and a smoothing capacitor to its output terminal. The module avoids the need to provide a separate pair of power terminals for the standard filtering components, resulting in a more economical package and in an easier-to-use module.
Abstract translation: 一个四端子，统一功率因数，电子整流模块。 电子整流器模块是独立的，并且其中包括形成全波桥式整流器的桥式二极管，控制电路和二极管，其组件一起起作用以从线路中吸取正弦电流。 独立的四端子模块设计用于允许高频输入电容器和线路电感器连接到其输入端子和平滑电容器到其输出端子。 该模块避免了为标准过滤组件提供单独的一对电源端子，从而实现更经济的封装和更易于使用的模块。
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公开(公告)号：US5045768A
公开(公告)日：1991-09-03
申请号：US428163
申请日：1989-10-27
Applicant: Brian R. Pelly
Inventor： Brian R. Pelly
IPC: H02J7/00
CPC classification number: H02J7/008
Abstract: A universal battery charger circuit has polarized capacitors disposed in the input a-c lines to a bridge-connected rectifier. A voltage clamping circuit is connected to the d-c terminals of the bridge and diodes are connected in parallel with each of the polarized capacitors to define a circuit for the flow of charging current. Regulation circuits are provided for both battery voltage and charging current so that any battery of given voltage output can be charged from different input voltage sources.
Abstract translation: 通用电池充电器电路具有设置在输入a-c线路中的极化电容器连接到桥式整流器。 电压钳位电路连接到桥的d-c端子，并且二极管与每个极化电容器并联连接，以限定用于充电电流的电路。 提供电池电压和充电电流的调节电路，以便可以从不同的输入电压源对任何给定电压输出的电池进行充电。
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公开(公告)号：US5006782A
公开(公告)日：1991-04-09
申请号：US366689
申请日：1989-06-15
Applicant: Brian R. Pelly
Inventor： Brian R. Pelly
IPC: H02M3/158
CPC classification number: H02M3/158 , H02M2001/007
Abstract: Two or more buck converter circuits are cascaded in such a manner that the output of one serves as the input to the next, with the input voltage to each succeeding buck converter stage being reduced in magnitude. The total circuit losses are substantially reduced as compared to the losses generated in a single buck converter having the same input voltage range and the same output voltage and output current. Both positive and negative output terminals may be provided for an output stage.
Abstract translation: 两个或更多个降压转换器电路以这样的方式级联，使得一个的输出用作下一个的输入，其中每个后续降压转换器级的输入电压大小减小。 与具有相同输入电压范围和相同输出电压和输出电流的单个降压转换器中产生的损耗相比，总电路损耗显着降低。 正输出端和负输出端都可以用于输出级。
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