公开(公告)号：US06208185B1

公开(公告)日：2001-03-27

申请号：US09276417

申请日：1999-03-25

申请人： Vinod John ,  Bum-Seok Suh ,  Thomas Anthony Lipo

发明人： Vinod John ,  Bum-Seok Suh ,  Thomas Anthony Lipo

IPC分类号： H03K512

CPC分类号： H03K17/168 ,  H03K17/0406

摘要： An active drive circuit for high power IGBTs provides optimized switching performance for both turn-on and turn-off by incorporating a three-stage action to improve performance characteristics. The gate drive circuit includes a semiconductor switch such as a MOSFET connected in series with a low resistance gate turn-on resistor between the supply line and the gate input line, and a parallel connected bipolar transistor. During the first and third stages of turn-on, the MOSFET switch is turned on to provide rapid charging of the gate, whereas during the second stage the bipolar transistor is turned on to provide a controlled level of current charging of the gate. Similarly, a switch such as an MOSFET is connected in series with a low resistance gate turn-off resistor between the turn-off supply voltage line and the gate input line, and a bipolar transistor is connected in parallel therewith across the supply line and the gate input line. During the first and second stages of turn-off, the MOSFET switch is turned on to provide rapid discharging of the gate whereas during the second stage the bipolar transistor is turned on to provide a controlled level of discharge current from the gate.

摘要翻译： 大功率IGBT的有源驱动电路通过结合三级动作来提高性能特性，为开启和关断提供优化的开关性能。 栅极驱动电路包括与电源线和栅极输入线之间的低电阻栅极导通电阻串联连接的MOSFET等半导体开关和并联连接的双极型晶体管。 在导通的第一和第三阶段期间，MOSFET开关导通以提供栅极的快速充电，而在第二阶段期间，双极晶体管导通以提供栅极的受控电流充电水平。 类似地，诸如MOSFET的开关与关断电源电压线和栅极输入线之间的低电阻栅极截止电阻串联连接，并且双极晶体管与供电线并联连接，并且 门输入线。 在关断的第一和第二阶段期间，MOSFET开关导通以提供栅极的快速放电，而在第二阶段期间，双极晶体管导通以提供来自栅极的受控电平的放电电流。

公开(公告)号：US6097582A

公开(公告)日：2000-08-01

申请号：US250472

申请日：1999-02-12

申请人： Vinod John ,  Bum-Seok Suh ,  Thomas Anthony Lipo

发明人： Vinod John ,  Bum-Seok Suh ,  Thomas Anthony Lipo

IPC分类号： H03K17/082 ,  H03K17/16 ,  H02H3/18

CPC分类号： H03K17/165 ,  H03K17/0828

摘要： A short circuit protection circuit for IGBTs and similar power switch devices. Device collector voltage, e.g., desaturation voltage, is monitored to detect rapidly the occurrence of a short circuit fault. The voltage between the power device emitter and the Kelvin emitter terminals of the device preferably is also monitored and integrated to obtain an estimate of the current flowing through the power switch device. Circuit protection is implemented if either the measured collector to emitter voltage exceeds a selected level or the estimated current through the device exceeds a selected level. Upon the detection of the fault, a capacitor in parallel with a zener diode is connected between the power switch gate and ground. Thus, following a fault, the gate voltage is driven quickly to a low level as the voltage on the gate is discharged through the capacitor. The zener diode establishes a clamp voltage at a selected level of gate voltage that permits controlled current flow through the power switching device that is within the capacity of the device so that the device is not damaged. A pre-charged capacitor is then connected between the gate and ground to turn off the power switching device gradually as the pre-charged capacitor discharges into the gate. The voltage level on the pre-charged capacitor is established by a zener diode connected in parallel thereto.

摘要翻译： IGBT和类似功率开关器件的短路保护电路。 监控器件集电极电压，例如去饱和电压，以快速检测短路故障的发生。 功率器件发射极和器件的开尔文发射极端子之间的电压优选地也被监测和积分，以获得流过功率开关器件的电流的估计。 如果测量的集电极到发射极的电压超过选定的电平或者通过器件的估计电流超过选定的电平，则实现电路保护。 在检测到故障时，与齐纳二极管并联的电容器连接在电源开关门和地之间。 因此，在发生故障之后，栅极电压通过电容器放电而迅速驱动到低电平。 齐纳二极管以选定的栅极电压电平建立钳位电压，允许受控的电流流过设备容量内的功率开关器件，从而不会损坏器件。 然后，预充电电容器连接在栅极和地之间，以使预充电电容器放电到栅极中逐渐关闭电源开关器件。 预充电电容器上的电压电平由与其并联连接的齐纳二极管建立。

公开(公告)号：US20100314936A1

公开(公告)日：2010-12-16

申请号：US12483546

申请日：2009-06-12

申请人： Eric L. Benedict ,  Vinod John

发明人： Eric L. Benedict ,  Vinod John

IPC分类号： H02J4/00

CPC分类号： H02J3/38 ,  Y10T307/305

摘要： A distributed energy resource (DER) switching system and method for connecting a DER to an electrical power system (EPS) protector, wherein the DER has a reactance-to-resistance ratio higher than the reactance-to-resistance ratio of the EPS protector. The DER switching system includes an input for receiving power from the DER, and an output for providing power from the DER to the EPS protector. The DER switching system is designed to effectively lower the higher reactance-to-resistance ratio of the DER during an over-current fault so that, during the fault, the effective reactance-to-resistance ratio at the output of the DER switching system is lower than the reactance-to-resistance ratio of the EPS protector. The method includes effectively lowering the reactance-to-resistance ratio of the DER by varying the operating state of a switching device in a controlled manner during the fault.

摘要翻译： 一种用于将DER连接到电力系统（EPS）保护器的分布式能源（DER）切换系统和方法，其中所述DER具有比所述EPS保护器的电抗/电阻比高的电抗电阻比。 DER切换系统包括用于从DER接收电力的输入和用于从DER向EPS保护器提供电力的输出。 DER开关系统设计用于在过电流故障期间有效降低DER的较高电抗电阻比，从而在故障期间，DER开关系统输出端的有效电抗比为 低于EPS保护器的电抗比。 该方法包括通过在故障期间以受控的方式改变开关装置的工作状态来有效地降低DER的电抗比。

公开(公告)号：US08331071B2

公开(公告)日：2012-12-11

申请号：US12483546

申请日：2009-06-12

申请人： Eric L. Benedict ,  Vinod John

发明人： Eric L. Benedict ,  Vinod John

IPC分类号： H02J4/00

CPC分类号： H02J3/38 ,  Y10T307/305

摘要： A distributed energy resource (DER) switching system and method for connecting a DER to an electrical power system (EPS) protector, wherein the DER has a reactance-to-resistance ratio higher than the reactance-to-resistance ratio of the EPS protector. The DER switching system includes an input for receiving power from the DER, and an output for providing power from the DER to the EPS protector. The DER switching system is designed to effectively lower the higher reactance-to-resistance ratio of the DER during an over-current fault so that, during the fault, the effective reactance-to-resistance ratio at the output of the DER switching system is lower than the reactance-to-resistance ratio of the EPS protector. The method includes effectively lowering the reactance-to-resistance ratio of the DER by varying the operating state of a switching device in a controlled manner during the fault.

摘要翻译： 一种用于将DER连接到电力系统（EPS）保护器的分布式能源（DER）切换系统和方法，其中所述DER具有比所述EPS保护器的电抗/电阻比高的电抗电阻比。 DER切换系统包括用于从DER接收电力的输入和用于从DER向EPS保护器提供电力的输出。 DER开关系统设计用于在过电流故障期间有效降低DER的较高电抗电阻比，从而在故障期间，DER开关系统输出端的有效电抗比为 低于EPS保护器的电抗比。 该方法包括通过在故障期间以受控的方式改变开关装置的工作状态来有效地降低DER的电抗比。

公开(公告)号：US07355309B2

公开(公告)日：2008-04-08

申请号：US11192384

申请日：2005-07-28

申请人： Daniel Costin ,  Vinod John

发明人： Daniel Costin ,  Vinod John

IPC分类号： H02K21/12

CPC分类号： H02K1/2773 ,  H02K1/278 ,  H02K1/30 ,  H02K7/1838 ,  H02K15/03 ,  H02K2201/06

摘要： In order to provide a less expensive generator, a rotor using nonmagnetic beams is disclosed. The rotor includes a magnetic steel rim connected to a main generator shaft by a hub. The magnetic rim supports the components of the rotor, which includes a plurality of magnets and pole pieces. The pole pieces are connected to the rim with non-magnetic standoffs and nonmagnetic fasteners. The magnets are supported radially by nonmagnetic beams. The magnets are retained tangentially by pole pieces and radially by wedges. The components of the rotor are further retained axially between plates coupled to the rim and a shoulder on the pole pieces.

摘要翻译： 为了提供便宜的发电机，公开了使用非磁性梁的转子。 转子包括通过轮毂连接到主发电机轴的磁钢轮缘。 磁性边缘支撑转子的部件，其包括多个磁体和极片。 极片通过非磁性支座和非磁性紧固件连接到轮辋上。 磁体由非磁性梁径向支撑。 磁体通过极片切向保持，并以楔形方式径向保持。 转子的部件进一步保持在联接到轮辋的板和杆之间的肩部上。

公开(公告)号：US20060004531A1

公开(公告)日：2006-01-05

申请号：US10677559

申请日：2003-10-01

申请人： Zhihong Ye ,  Vinod John ,  Changyong Wang ,  Luis Garces ,  Rui Zhou ,  Lei Li ,  Reigh Walling ,  William Premerlani ,  Peter Sanza ,  Yan Liu ,  Mark Dame

发明人： Zhihong Ye ,  Vinod John ,  Changyong Wang ,  Luis Garces ,  Rui Zhou ,  Lei Li ,  Reigh Walling ,  William Premerlani ,  Peter Sanza ,  Yan Liu ,  Mark Dame

IPC分类号： G01R21/00

CPC分类号： G01R19/2513 ,  H02J3/383 ,  H02J2003/388 ,  Y02E10/563 ,  Y10T307/398 ,  Y10T307/511

摘要： An apparatus for anti-islanding protection of a distributed generation with respect to a feeder connected to an electrical grid is disclosed. The apparatus includes a sensor adapted to generate a voltage signal representative of an output voltage and/or a current signal representative of an output current at the distributed generation, and a controller responsive to the signals from the sensor. The controller is productive of a control signal directed to the distributed generation to drive an operating characteristic of the distributed generation out of a nominal range in response to the electrical grid being disconnected from the feeder.

摘要翻译： 公开了一种用于相对于连接到电网的馈线的分布式发电的防孤岛保护的装置。 该装置包括适于产生代表输出电压的电压信号和/或表示分布式发电时的输出电流的电流信号的传感器，以及响应于来自传感器的信号的控制器。 所述控制器响应于所述电网与所述馈线断开而产生指向所述分布式发电的控制信号以驱动所述分布式发电的工作特性在标称范围之外。

公开(公告)号：US06556462B1

公开(公告)日：2003-04-29

申请号：US10064278

申请日：2002-06-28

申请人： Robert Louis Steigerwald ,  Vinod John ,  Milan Zarko Ilic

发明人： Robert Louis Steigerwald ,  Vinod John ,  Milan Zarko Ilic

IPC分类号： H02M7217

CPC分类号： H02M1/4208 ,  H02M5/458 ,  H02M2001/007 ,  Y02B70/126 ,  Y02P80/112

摘要： A high power factor converter system comprises an input rectifier, a converter and a booster circuit. The input rectifier is configured for rectifying an input ac voltage. The converter is configured for generating an output voltage for the high power factor converter system. The converter comprises several converter switches and inverse parallel diodes. The booster circuit comprises an inductor and at least one converter switch and an inverse parallel diode of the converter. The inductor is coupled between the input rectifier and the converter. The booster circuit is configured for controlling the supply of a booster current through the inductor to be discontinuous when the instantaneous voltage level is less than a predetermined fraction of a dc voltage level across the converter and continuous when the instantaneous voltage level is greater than the predetermined fraction of the dc voltage level.

摘要翻译： 高功率因数转换器系统包括输入整流器，转换器和升压电路。 输入整流器配置为整流输入交流电压。 转换器被配置为产生用于高功率因数转换器系统的输出电压。 该转换器包括多个转换器开关和反并联二极管。 升压电路包括电感器和转换器的至少一个转换器开关和逆并联二极管。 电感器耦合在输入整流器和转换器之间。 升压电路被配置为当瞬时电压电平小于转换器上的直流电压电平的预定分数时，控制通过电感器的升压电流不连续的供应，并且当瞬时电压电平大于预定值时连续 直流电压电平的分数。

公开(公告)号：US20060028083A1

公开(公告)日：2006-02-09

申请号：US11192384

申请日：2005-07-28

申请人： Daniel Costin ,  Vinod John

发明人： Daniel Costin ,  Vinod John

IPC分类号： H02K21/12 ,  H02K3/48

CPC分类号： H02K1/2773 ,  H02K1/278 ,  H02K1/30 ,  H02K7/1838 ,  H02K15/03 ,  H02K2201/06

摘要： In order to provide a less expensive generator, a rotor using nonmagnetic beams is disclosed. The rotor includes a magnetic steel rim connected to a main generator shaft by a hub. The magnetic rim supports the components of the rotor, which includes a plurality of magnets and pole pieces. The pole pieces are connected to the rim with non-magnetic standoffs and nonmagnetic fasteners. The magnets are supported radially by nonmagnetic beams. The magnets are retained tangentially by pole pieces and radially by wedges. The components of the rotor are further retained axially between plates coupled to the rim and a shoulder on the pole pieces.

摘要翻译： 为了提供便宜的发电机，公开了使用非磁性梁的转子。 转子包括通过轮毂连接到主发电机轴的磁钢轮缘。 磁性边缘支撑转子的部件，其包括多个磁体和极片。 极片通过非磁性支座和非磁性紧固件连接到轮辋上。 磁体由非磁性梁径向支撑。 磁体通过极片切向保持，并以楔形方式径向保持。 转子的部件进一步保持在联接到轮辋的板和杆之间的肩部上。

公开(公告)号：US06563722B1

公开(公告)日：2003-05-13

申请号：US09703736

申请日：2000-11-02

申请人： Vinod John ,  Luis Jose Garces ,  Peter Claudius Sanza ,  Paul Michael Szczesny

发明人： Vinod John ,  Luis Jose Garces ,  Peter Claudius Sanza ,  Paul Michael Szczesny

IPC分类号： H02H7125

CPC分类号： H02J3/1814 ,  H02P23/186 ,  Y02E40/18

摘要： A method and system for compensating for line imbalances in line commutated converters. The controller includes a phase-locked loop (PLL) synchronizing tool which receives the line to line voltage signals and generates firing angle and frequency signals used for synchronizing the two input signals. The PLL controller, in addition to the firing angle and frequency signals, also generates signals representative of filtered values of amplitudes for each of the line to line voltage signals. A voltage imbalance compensation processor associated with the bridge firing controller receives the filtered amplitude signals and also a signal representative of the firing sector of the bridge. The voltage imbalance compensation processor generates, based upon the sector signal and the received filtered amplitude signals a amplitude signal used by a current regulator which is compensated for line imbalances present in the line voltage.

摘要翻译： 一种用于补偿线路换向转换器中线路不平衡的方法和系统。 该控制器包括锁相环（PLL）同步工具，其接收线间电压信号，并产生用于同步两个输入信号的触发角和频率信号。 除了触发角和频率信号之外，PLL控制器还产生表示每个线对电压信号的滤波值的滤波值的信号。 与桥接启动控制器相关联的电压不平衡补偿处理器接收经滤波的幅度信号以及代表桥接器的发射扇区的信号。 电压不平衡补偿处理器基于扇区信号和接收到的滤波幅度信号产生电流调节器使用的振幅信号，电流调节器补偿线路电压中存在的线路不平衡。

公开(公告)号：US06278623B1

公开(公告)日：2001-08-21

申请号：US09704246

申请日：2000-11-02

申请人： Luis Jose Garces ,  Vinod John ,  Peter Claudius Sanza ,  Paul Michael Szczesny

发明人： Luis Jose Garces ,  Vinod John ,  Peter Claudius Sanza ,  Paul Michael Szczesny

IPC分类号： H02M112

CPC分类号： H02M7/1623 ,  H02M1/12 ,  H02M7/1552 ,  H02M2007/2195 ,  Y02B70/1408 ,  Y10S388/911 ,  Y10S388/917

摘要： A method and system for compensating for voltage notches in phase locked loop (PLL) control devices. A bridge firing controller receives signals representative of two of the line to line voltages received by the bridge. The controller includes a PLL synchronizing tool which receives the line to line voltage signals and generates a synchronizing phase error signal for aligning the phases of the two input signals. The controller, for a predetermined period following bridge firing, determines whether a voltage notch has occurred. If so, the controller substitutes model control signals for actual control signals so as to reduce the effect of the notch on the generated phase error signal used for synchronization. If not, the controller continues to use the actual control signals to generate the phase error signal. Once the predetermined period has expired, the controller utilizes the actual control signals to generate the phase error signal.

摘要翻译： 一种补偿锁相环（PLL）控制装置电压缺口的方法和系统。 桥接发射控制器接收代表由桥接收的线对电压中的两个的信号。 该控制器包括一个PLL同步工具，它接收线间电压信号，并产生用于对准两个输入信号的相位的同步相位误差信号。 控制器在桥接点火之后的预定时间内确定是否发生了电压缺口。 如果是这样，控制器将模型控制信号替换为实际控制信号，以便减小所产生的相位误差信号用于同步的影响。 如果不是，则控制器继续使用实际的控制信号来产生相位误差信号。 一旦预定时间段到期，控制器利用实际控制信号产生相位误差信号。