公开(公告)号：US06636107B2

公开(公告)日：2003-10-21

申请号：US09816590

申请日：2001-03-23

Applicant: Brian R. Pelly

Inventor： Brian R. Pelly

IPC: H03K500

CPC classification number: H02M1/12 ,  H02M5/458 ,  H02M2001/123 ,  H02P29/50 ,  H02P2201/07

Abstract: An active filter reduces the common mode current in the ground wire of a PWM controlled motor drive circuit. The active filter is, in part, integrated into an integrated circuit chip and contains a buffer amplifier which drives two junction type or MOSFET transistors linearly to divert common mode current from a ground wire and through the transistors. The transistors are connected between positive and negative d-c busses which supply d-c power to a PWM inventor which drives an a-c motor, producing the common mode ground current in its grounded frame. A current transformer monitors the common mode current and its output is coupled to the input of the buffer amplifier to control the transistors. An internal power supply for the amplifiers is formed at the nodes between two current sources and two zener diodes which are connected between the d-c bus conductors. Headroom control circuits are disclosed to insure sufficient headroom voltage for each of the transistors under all input a-c voltage conditions.

Abstract translation: 有源滤波器降低PWM控制电机驱动电路的接地线中的共模电流。 有源滤波器部分地集成到集成电路芯片中，并且包含缓冲放大器，其驱动两个结型或MOSFET晶体管，以使共模电流从地线和晶体管转移。 晶体管连接在正和负d-c总线之间，该总线向驱动a-c电机的PWM发明者提供d-c电源，在接地的框架中产生共模接地电流。 电流互感器监视共模电流，其输出耦合到缓冲放大器的输入端以控制晶体管。 在两个电流源和连接在d-c总线导体之间的两个齐纳二极管之间的节点处形成用于放大器的内部电源。 公开了裕量控制电路，以在所有输入a-c电压条件下为每个晶体管确保足够的裕量电压。

公开(公告)号：US5818214A

公开(公告)日：1998-10-06

申请号：US783189

申请日：1997-01-15

Applicant: Brian R. Pelly ,  Yi Zhang

Inventor： Brian R. Pelly ,  Yi Zhang

IPC: H02M3/155 ,  G05F1/66 ,  H02M3/156 ,  G05F1/44

CPC classification number: G05F1/66 ,  H02M3/156 ,  H01L2924/0002

Abstract: A buck regulator circuit provides a low voltage, e.g., about 15 V, power source, directly from a variable high-voltage dc bus voltage that varies from 250 V to about 450 V. A monolithic gate driver circuit is used to drive the switching device, e.g., a MOSgate transistor, which delivers the high voltage dc to the load output node via a charging inductor for controlled time periods. The control principle for controlling the on and off times of the transistor (with the monolithic gate driver circuit) relies on turning on the transistor for fixed time periods that are equal to the intrinsic delay of the gate driver circuit. In contrast, the off period of the switching device is varied to regulate and maintain the output voltage at a constant value, independent of the input dc bus voltage or of the output current.

Abstract translation: 降压调节器电路直接从250V至约450V的可变高压直流母线电压提供低电压，例如约15V的电源。单片栅极驱动器电路用于驱动开关器件 ，例如MOSgate晶体管，其通过充电电感器将高电压dc传送到负载输出节点，以控制时间段。 用于控制晶体管（具有单片栅极驱动电路）的导通和截止时间的控制原理依赖于等于栅极驱动器电路的固有延迟的固定时间段的导通晶体管。 相反，切换装置的关闭周期是变化的，以将输出电压调节和保持在恒定值，与输入直流母线电压或输出电流无关。

公开(公告)号：US5751530A

公开(公告)日：1998-05-12

申请号：US696116

申请日：1996-08-13

Applicant: Brian R. Pelly ,  Henry N. Tachick

Inventor： Brian R. Pelly ,  Henry N. Tachick

IPC: H02H1/00 ,  H02H3/00 ,  H02H3/16 ,  H02H7/16 ,  H02H9/04 ,  H02H9/00

CPC classification number: H02H3/00 ,  H02H7/16 ,  H02H9/041

Abstract: A high power DC blocking device is provided which blocks DC current, passes AC current, and limits the voltage across it under fault conditions. A DC blocking capacitor is used to block the flow of DC current, while allowing the passage of normal AC currents. A main bypass path includes switching devices which provide a low impedance path across the capacitor under fault conditions. Auxiliary switching devices are used to connect a storage capacitor across the device at the initiation of a fault, thereby charging the storage capacitor to a stored voltage level before the main switching devices are fired. After the fault passes, the auxiliary switching devices are fired once again to apply the stored voltage in the storage capacitor to the main switching devices to commutate them off. The storage capacitor and auxiliary switching devices also form part of a voltage clamp circuit which dissipates inductive energy stored in a system to which the DC blocking device is connected. Multiple backup firing circuits are provided which activate the low impedance bypass path in the event of failure of the main firing circuits or of the blocking device control system. The effectiveness of the DC blocking device is continuously monitored using a DC current sensing circuit which is capable of distinguishing small DC currents in the presence of large AC currents.

Abstract translation: 提供了一种大功率DC阻断装置，其阻断直流电流，通过交流电流，并在故障条件下限制其上的电压。 使用隔直流电容器阻止直流电流的流动，同时允许正常的交流电流通过。 主旁路路径包括在故障条件下在电容器两端提供低阻抗路径的开关装置。 辅助开关器件用于在故障发生时在器件上连接存储电容器，从而在主开关器件触发之前将存储电容器充电至存储的电压电平。 故障通过后，辅助开关装置再次点火，将存储电容器中的存储电压施加到主开关装置，使其切换。 存储电容器和辅助开关器件也构成电压钳位电路的一部分，该电压钳位电路消耗存储在与DC阻断器件连接的系统中的感应能量。 提供多个备用点火电路，其在主发射电路或阻塞装置控制系统发生故障的情况下激活低阻抗旁路。 使用直流电流检测电路连续监测直流阻塞装置的有效性，该电流检测电路能够在存在大的交流电流的情况下区分小直流电流。

公开(公告)号：US4389702A

公开(公告)日：1983-06-21

申请号：US412103

申请日：1982-08-27

Applicant: Stefano Clemente ,  Brian R. Pelly ,  Rutton Ruttonsha

Inventor： Stefano Clemente ,  Brian R. Pelly ,  Rutton Ruttonsha

IPC: H02M1/10 ,  H02M3/335

CPC classification number: H02M1/10 ,  H02M3/33546

Abstract: A switching power supply is disclosed using a single transistor circuit which provides a constant output voltage for a range of input voltages extending from a nominal 115 volt power supply to a nominal 220/240 volt power supply without requiring a change in the circuit configuration throughout the range of input voltages. The circuit is disclosed in connection with a single transistor forward converter circuit, in which the transformer winding of the converter circuit is provided with a uni-directional clamp to prevent the transformer voltage of a given polarity from exceeding the clamping voltage magnitude. By clamping one polarity of the transformer voltage which is in series with the switching transistor, the maximum peak-to-peak voltage on the transistor is reduced from that which would be produced in the absence of clamping and enables the use of a power MOSFET transistor for the circuit. The clamping circuit is disclosed as a zener clamp and as a circuit including a parallel resistor and capacitor and series diode.

Abstract translation: 公开了一种使用单晶体管电路的开关电源，该晶体管电路为从标称115伏特电源延伸到标称220/240伏电源的一系列输入电压提供恒定的输出电压，而不需要改变整个电路的电路配置 输入电压范围。 公开了与单晶体管正转变换器电路有关的电路，其中变换器电路的变压器绕组设置有单向钳位件，以防止给定极性的变压器电压超过钳位电压幅度。 通过夹紧与开关晶体管串联的变压器电压的一个极性，晶体管上的最大峰 - 峰电压从不存在钳位时产生的峰值电压降低，并且能够使用功率MOSFET晶体管 为电路。 钳位电路被公开为齐纳钳位器，并且作为包括并联电阻器和电容器和串联二极管的电路公开。

公开(公告)号：US07385438B2

公开(公告)日：2008-06-10

申请号：US11619481

申请日：2007-01-03

Applicant: Brian R. Pelly

Inventor： Brian R. Pelly

IPC: H03K5/00

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，用于降低脉冲宽度调制驱动电路中的共模电流，驱动负载所述驱动电路，所述驱动电路包括交流电源，连接到所述交流源的整流器，并产生连接到正直流母线和负直流的整流输出电压 总线，具有耦合到所述正直流总线和负直流总线并具有可控交流输出的输入端的PWM逆变器，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， 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。

公开(公告)号：US07187229B2

公开(公告)日：2007-03-06

申请号：US10843538

申请日：2004-05-10

Applicant: Brian R. Pelly

Inventor： Brian R. Pelly

IPC: H03K5/00

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 in said ground wire, said current sensor producing an output current related to said common mode current, said active filter comprising a first and second MOSFET transistor, each having first and second main electrodes and a control electrode, and an amplifier driving a respective one of the 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; each of said amplifiers having an input coupled to said output of said current sensor and each having an output connected to a respective one of 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.

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 用于测量所述接地线中的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MOSFET晶体管，每个具有第一和第二主电极以及控制 电极和驱动所述晶体管中的相应一个的放大器; 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; 每个所述放大器具有耦合到所述电流传感器的所述输出的输入，并且每个具有连接到所述控制电极中的相应一个的输出; 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。

公开(公告)号：US5856904A

公开(公告)日：1999-01-05

申请号：US749453

申请日：1996-11-15

Applicant: Brian R. Pelly ,  Henry N. Tachick

Inventor： Brian R. Pelly ,  Henry N. Tachick

IPC: H02H3/50 ,  H02H9/04

CPC classification number: H02H3/50

Abstract: An isolator surge protector (ISP) is provided which blocks DC current and passes AC current and AC and DC fault currents. The ISP includes a main bypass path, including main bypass path switching devices, that is connected in parallel with a DC blocking capacitor. Primary triggering of the main bypass path switching devices occurs when the voltage across the ISP exceeds a primary voltage trigger level. Repeated triggering of the bypass path switching devices, and high current discharge of the high voltage DC blocking capacitor through the bypass path, under abnormal steady state voltage conditions, is prevented by initiating a secondary triggering period following primary triggering of the bypass path switching devices. During the extended secondary triggering period, triggering of the bypass path switching devices occurs at a low secondary voltage trigger level. Primary triggering of the bypass path switching devices preferably also occurs when the AC current in the DC blocking capacitor exceeds a selected primary current trigger level, thereby protecting the DC blocking capacitor from damage due to excessive currents. Primary triggering due to high AC current levels in the DC blocking capacitor is also followed by a secondary triggering period during which triggering of the bypass path SCRs occurs at the low secondary voltage trigger level. The ISP preferably also provides a warning indication when primary triggering of the bypass path switching devices occurs.

Abstract translation: 提供隔离电涌保护器（ISP），阻塞直流电流并传递交流电流和交流和直流故障电流。 ISP包括主旁路路径，包括与旁路电容并联连接的主旁路路径切换装置。 主要旁路路径切换装置的主要触发发生在ISP两端的电压超过初级电压触发电平时。 通过在旁路路径切换装置初次触发之后启动辅助触发周期来防止旁路路径切换装置的重复触发，以及在异常稳态电压条件下通过旁通路径的高压隔直流电容器的高电流放电。 在延长的辅助触发期间，旁路路径切换装置的触发发生在低的次级电压触发电平。 当隔直电容器中的交流电流超过所选择的初级电流触发电平时，也可以发生旁路通路开关器件的初级触发，从而保护直流隔离电容器免受过大电流的损坏。 由于隔直流电容器中的高交流电流电平引起的主要触发也跟随辅助触发周期，在此次触发周期期间，旁路路径SCR的触发发生在低次级电压触发电平。 当发生旁路路径切换装置的主要触发时，ISP优选地还提供警告指示。

公开(公告)号：US4965710A

公开(公告)日：1990-10-23

申请号：US438094

申请日：1989-11-16

Applicant: Brian R. Pelly ,  Ajit Dubhashi ,  Peter R. Ewer

Inventor： Brian R. Pelly ,  Ajit Dubhashi ,  Peter R. Ewer

IPC: H01L25/07 ,  H01L25/16 ,  H01L25/18 ,  H02M7/00 ,  H02M7/538 ,  H03K17/082 ,  H03K17/12

CPC classification number: H01L25/162 ,  H02M7/003 ,  H02M7/538 ,  H03K17/0828 ,  H03K17/12 ,  H03K17/122 ,  H03K17/127 ,  H01L2224/48091 ,  H01L2224/48227 ,  H01L2924/01019 ,  H01L2924/01039 ,  H01L2924/01046 ,  H01L2924/01068 ,  H01L2924/01077 ,  H01L2924/12041 ,  H01L2924/1301 ,  H01L2924/1305 ,  H01L2924/13055 ,  H01L2924/13091

Abstract: A power module contains IGBT die along with integrated circuit driver chips and opto isolators or isolation transformers within the same module housing. Output terminals are provided which can be interfaced directly to control logic or microprocessors for operating the module. The IGBTs may have current-sensing electrodes to simplify current measurement and control functions.

Abstract translation: 电源模块包含IGBT裸片以及同一模块外壳内的集成电路驱动器芯片和光隔离器或隔离变压器。 提供输出端子，其可以直接连接到用于操作模块的控制逻辑或微处理器。 IGBT可以具有电流感测电极，以简化电流测量和控制功能。

公开(公告)号：US07583136B2

公开(公告)日：2009-09-01

申请号：US12055982

申请日：2008-03-26

Applicant: Brian R. Pelly

Inventor： Brian R. Pelly

IPC: H03K5/00

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。

公开(公告)号：US06429639B1

公开(公告)日：2002-08-06

申请号：US09010464

申请日：1998-01-21

Applicant: Brian R. Pelly

Inventor： Brian R. Pelly

IPC: G01R3300

CPC classification number: H02M1/126 ,  G01R15/202 ,  H01F3/14 ,  H01F27/402 ,  H01F37/00 ,  H01F38/30 ,  H02M2001/0009 ,  H02M2001/0064

Abstract: A combined filter inductor and Hall current sensor for a double inverter motor drive is formed on a unitary magnetic core. The magnetic core has a suitable winding and air gap to comprise an inductor. The Hall effect sensor is situated in the airgap to detect a Hall effect voltage created by the magnetic flux in the air gap.

Abstract translation: 用于双变频电机驱动的组合式滤波电感器和霍尔电流传感器形成在一体式磁芯上。 磁芯具有合适的绕组和气隙以包括电感器。 霍尔效应传感器位于气隙中，以检测由气隙中的磁通产生的霍尔效应电压。