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11. 发明申请

US20120092898A1 ALTERNATING CURRENT TO DIRECT CURRENT POWER CONVERSION 有权
标题翻译：替代电流直接电流转换
公开(公告)号：US20120092898A1
公开(公告)日：2012-04-19
申请号：US13096005
申请日：2011-04-28
申请人： Ravisekhar Nadimpalli Raju , Luis Jose Garces , Robert Louis Steigerwald , Michael Joseph Schutten
发明人： Ravisekhar Nadimpalli Raju , Luis Jose Garces , Robert Louis Steigerwald , Michael Joseph Schutten
IPC分类号： H02M3/335
CPC分类号： H02M3/3376 , H02M1/4258 , H02M3/285 , H02M3/33561 , H02M3/33576 , Y02B70/126 , Y02B70/1433
摘要： An alternating current to direct current (AC to DC) power conversion system is provided. The system includes a rectifier configured to convert an input AC voltage to an initial pulsating DC voltage. The system also includes an inverter configured to convert the initial pulsating DC voltage to a converted AC voltage. The system further includes a plurality of transformers, each transformer including a primary winding paired to a secondary winding, wherein each of the primary windings is coupled in series with the other primary windings, wherein the series coupled primary windings are coupled to the inverter to receive respective portions of the converted AC voltage. The system also includes a plurality of bridges, each bridge coupled to a respective secondary winding configured to receive a respective portion of a transformed AC voltage from the respective secondary windings, and coupled in parallel to the other bridges to provide a combined DC output voltage.
摘要翻译：提供了直流（AC-DC）电力转换系统的交流电。该系统包括被配置为将输入AC电压转换为初始脉动直流电压的整流器。该系统还包括被配置为将初始脉动直流电压转换为转换的交流电压的逆变器。该系统还包括多个变压器，每个变压器包括与次级绕组成对的初级绕组，其中每个初级绕组与其它初级绕组串联耦合，其中串联耦合初级绕组耦合到逆变器以接收转换后的交流电压的各部分。该系统还包括多个桥，每个桥耦合到相应的次级绕组，其被配置为从相应的次级绕组接收变换的AC电压的相应部分，并联耦合到其它桥以提供组合的DC输出电压。

12. 再颁专利

USRE40907E1 Ripple cancellation circuit for ultra-low-noise power supplies 有权
标题翻译：用于超低噪声电源的纹波消除电路
公开(公告)号：USRE40907E1
公开(公告)日：2009-09-08
申请号：US11361663
申请日：2006-02-17
申请人： Robert Louis Steigerwald , Michael Joseph Schutten
发明人： Robert Louis Steigerwald , Michael Joseph Schutten
IPC分类号： H02M1/14 , G05F1/56
CPC分类号： H02M3/156 , H02J1/02 , H02M1/14 , H02M3/337
摘要： A low-ripple power supply includes a storage capacitor coupled across load terminals, and an inductor connected to a source of voltage including a varying or pulsatory component and a direct component, for causing a flow of current to said capacitor through the inductor. The varying component of the inductor current flowing in the capacitor results in ripple across the load. A winding is coupled to the inductor for generating a surrogate of the varying inductor current. The surrogate current is added to the inductor current to cancel or reduce the magnitude of the varying current component. This cancellation effectively reduces the varying current component flowing in the storage capacitor, which in turn reduces the ripple appearing across the load terminals.(121)
摘要翻译：低纹波电源包括耦合在负载端子之间的存储电容器和连接到包括变化或脉动分量和直接分量的电压源的电感器，用于通过电感器引起电流流向所述电容器。在电容器中流动的电感电流的变化分量导致负载上的纹波。绕组耦合到电感器以产生变化的电感器电流的替代。替代电流被加到电感电流以消除或减小变化电流分量的大小。这种消除有效地减少了在存储电容器中流动的变化的电流分量，这反过来又减少了跨负载端子出现的波动。（121）

13. 发明授权

US06930483B2 Method/system for switched frequency ripple reduction in MRI gradient coils 失效
标题翻译： MRI梯度线圈中开关频率纹波降低的方法/系统
公开(公告)号：US06930483B2
公开(公告)日：2005-08-16
申请号：US10632283
申请日：2003-08-01
申请人： Juan Antonio Sabate , Robert Louis Steigerwald , Michael Joseph Schutten
发明人： Juan Antonio Sabate , Robert Louis Steigerwald , Michael Joseph Schutten
IPC分类号： G01R33/36 , G01V3/00
CPC分类号： G01R33/3614
摘要： A method of operating a system having a coil includes providing a switched amplified current to the coil, and adding a second current to the switched amplified current, wherein the second current is substantially out of phase with the switched amplified current such that the coil receives current with substantially no switching frequency ripple.
摘要翻译：一种操作具有线圈的系统的方法包括向线圈提供开关放大电流，并向开关放大电流增加第二电流，其中第二电流与开关放大电流基本上不同相，使得线圈接收电流基本上没有开关频率纹波。

14. 发明授权

US6031746A Switching amplifier for generating continuous arbitrary waveforms for magnetic resonance imaging coils 有权
标题翻译：用于产生磁共振成像线圈的连续任意波形的开关放大器
公开(公告)号：US6031746A
公开(公告)日：2000-02-29
申请号：US148559
申请日：1998-09-04
申请人： Robert Louis Steigerwald , William Frederick Wirth , Ljubisa Dragolijub Stevanovic , John Norton Park
发明人： Robert Louis Steigerwald , William Frederick Wirth , Ljubisa Dragolijub Stevanovic , John Norton Park
IPC分类号： H03F3/217 , H02M7/00
CPC分类号： H03F3/2171
摘要： A partial-voltage buck regulator controls a high-voltage bus to a full-bridge circuit such that overall switching losses are reduced and distributed. Low-voltage buck regulator devices are PWM-switched when high output voltage is needed, and high-voltage bridge devices are PWM-switched when low output voltage is needed. A variable input power supply, which may be operated in a high power factor mode, can adjust the input bus voltages to achieve optimum performance for a given magnetic resonance imaging sequence.
摘要翻译：部分电压降压调节器将高压总线控制到全桥电路，从而减少和分配总开关损耗。当需要高输出电压时，低压降压稳压器件被PWM切换，当需要低输出电压时，高压桥式器件被PWM切换。可以在高功率因数模式下操作的可变输入电源可以调节输入总线电压以实现给定磁共振成像序列的最佳性能。

15. 发明授权

US5952832A Diagnostic circuit and method for predicting fluorescent lamp failure by monitoring filament currents 失效
标题翻译：通过监测灯丝电流来预测荧光灯故障的诊断电路和方法
公开(公告)号：US5952832A
公开(公告)日：1999-09-14
申请号：US761269
申请日：1996-12-06
申请人： Ljubisa Dragoljub Stevanovic , Robert Louis Steigerwald , Wing Yeung Chung
发明人： Ljubisa Dragoljub Stevanovic , Robert Louis Steigerwald , Wing Yeung Chung
IPC分类号： G01R31/44 , H05B41/295 , G01R31/00
CPC分类号： H05B41/295 , G01R31/44
摘要： A diagnostic circuit monitors filament currents in hot cathode fluorescent lamps for detecting when the filament erodes to the point of breaking. When such a filament failure is detected, information is processed and a request is sent to replace the lamp before it actually fails. The diagnostic circuit is low power and low voltage and is electrically isolated from the high-voltage end of the lamp. Additionally, a simple circuit to regulate rms value of filament voltage without having to compute or otherwise measure the actual rms value is provided.
摘要翻译：诊断电路监测热阴极荧光灯中的灯丝电流，用于检测灯丝何时腐蚀到断裂点。当检测到这种灯丝故障时，处理信息并发送请求以在其实际故障之前更换灯。诊断电路是低功率和低电压，并且与灯的高压端电隔离。另外，提供了一种简单的电路来调节灯丝电压的有效值，而不必计算或以其他方式测量实际有效值。

16. 发明授权

US5910709A Florescent lamp ballast control for zero -voltage switching operation over wide input voltage range and over voltage protection 失效
标题翻译：荧光灯镇流器控制用于在宽输入电压范围和过压保护下的零电压开关操作
公开(公告)号：US5910709A
公开(公告)日：1999-06-08
申请号：US870205
申请日：1997-06-06
申请人： Ljubisa Dragoljub Stevanovic , Robert Louis Steigerwald , Mustansir Hussainy Kheraluwala
发明人： Ljubisa Dragoljub Stevanovic , Robert Louis Steigerwald , Mustansir Hussainy Kheraluwala
IPC分类号： H05B41/24 , H05B41/285 , H05B41/298 , H05B41/392 , H05B37/02
CPC分类号： H05B41/2851 , H05B41/2981 , H05B41/3925 , H05B41/3927 , Y02B20/186
摘要： A ballast system for at least one dimmable fluorescent lamp includes a resonant switching inverter and a controller which controls the inverter to operate above resonance during starting and normal running operation. After a start delay timer allows time for the lamp filaments to heat up, the controller provides control signals to a gate driver to drive the switching devices of the switching inverter initially at a relatively high frequency and then reduces the frequency until a sufficiently high voltage is reached to start the lamp. Once the lamp is started, the inverter is operated in its normal feedback mode. The ballast system further includes an overvoltage shutdown mechanism. During lamp starting, if either the output of the start delay timer is high or the output voltage is greater than a first overvoltage shutdown threshold, then an overvoltage shutdown timer is activated to shut down operation of the inverter for a predetermined overvoltage shutdown period. After the lamp has started, a second overvoltage shutdown threshold is activated which is lower than the first overvoltage threshold for avoiding operation of the inverter below resonance. Both the frequency and duty cycle of the output voltage from the switching inverter are variable to achieve a wide dimming range over a relatively narrow frequency range.
摘要翻译：用于至少一个可调光荧光灯的镇流器系统包括谐振开关逆变器和控制器，其在启动和正常运行操作期间控制逆变器在谐振之上操作。在启动延迟定时器允许灯丝加热的时间之后，控制器向栅极驱动器提供控制信号，以最初以较高的频率驱动开关变换器的开关器件，然后降低频率，直到足够高的电压为达到启动灯。一旦灯启动，变频器将在其正常反馈模式下运行。镇流器系统还包括过压关断机构。在启动灯时，如果启动延迟定时器的输出为高电平或输出电压大于第一过电压关断阈值，则过电压关断定时器被激活，以在预定的过压关断期间关闭变频器的运行。在灯开始之后，激活第二个过电压关断阈值，该阈值低于第一过电压阈值，以避免在低于谐振的情况下使逆变器工作。来自开关逆变器的输出电压的频率和占空比都是可变的，以在相对窄的频率范围内实现宽的调光范围。

17. 发明授权

US08644037B2 AC-AC converter with high frequency link 有权
标题翻译： AC-AC转换器具有高频链路
公开(公告)号：US08644037B2
公开(公告)日：2014-02-04
申请号：US12173549
申请日：2008-07-15
申请人： Ravisekhar Nadimpalli Raju , Richard S. Zhang , Ljubisa Dragolijub Stevanovic , Jeffrey Neal Slotnick , Robert Louis Steigerwald , Luis Jose Garces
发明人： Ravisekhar Nadimpalli Raju , Richard S. Zhang , Ljubisa Dragolijub Stevanovic , Jeffrey Neal Slotnick , Robert Louis Steigerwald , Luis Jose Garces
IPC分类号： H02M5/45 , H02M7/00
CPC分类号： H02M5/458 , H02M5/271
摘要： An AC-AC Converter for an AC source which in one embodiment has a first rectifier section rectifying the AC source into a first pulsed DC link voltage signal and a high frequency modulating section coupled to the first pulsed DC link voltage signal and producing a high frequency AC voltage signal. A high frequency transformer is coupled to the high frequency AC voltage signal producing a transformed high frequency AC signal. There is a second rectifier section coupled to the transformed high frequency AC signal and producing a second pulsed DC voltage signal and an unfolder section coupled to the second pulsed DC voltage signal and producing an output AC signal.
摘要翻译：一种用于AC电源的AC-AC转换器，其在一个实施例中具有将AC源整流为第一脉冲DC链路电压信号的第一整流器部分和耦合到第一脉冲DC链路电压信号的高频调制部分，并产生高频交流电压信号。高频变压器耦合到产生变换的高频AC信号的高频AC电压信号。存在耦合到变换的高频AC信号并产生第二脉冲DC电压信号的第二整流器部分和耦合到第二脉冲DC电压信号并产生输出AC信号的非转储部分。

18. 发明授权

US08330299B2 DC to DC power converters and methods of controlling the same 有权
标题翻译：直流到直流电源转换器及其控制方法
公开(公告)号：US08330299B2
公开(公告)日：2012-12-11
申请号：US13171683
申请日：2011-06-29
申请人： Robert Louis Steigerwald , Ahmed Elasser , Juan Antonio Sabate , Maja Harfman Todorovic , Mohammed Agamy
发明人： Robert Louis Steigerwald , Ahmed Elasser , Juan Antonio Sabate , Maja Harfman Todorovic , Mohammed Agamy
IPC分类号： H01H9/54
CPC分类号： H02M3/3372 , H02J3/383 , H02M3/158 , H02M2001/0093 , Y02E10/563 , Y10T307/944
摘要： A power generation system configured to provide direct current (DC) power to a DC link is described. The system includes a first power generation unit configured to output DC power. The system also includes a first DC to DC converter comprising an input section and an output section. The output section of the first DC to DC converter is coupled in series with the first power generation unit. The first DC to DC converter is configured to process a first portion of the DC power output by the first power generation unit and to provide an unprocessed second portion of the DC power output of the first power generation unit to the output section.
摘要翻译：描述了被配置为向DC链路提供直流（DC）电力的发电系统。该系统包括被配置为输出直流电力的第一发电单元。该系统还包括第一DC-DC转换器，其包括输入部分和输出部分。第一DC-DC转换器的输出部分与第一发电单元串联耦合。第一DC-DC转换器被配置为处理由第一发电单元输出的直流电力的第一部分，并且向输出部提供第一发电单元的直流电力输出的未处理的第二部分。

19. 发明授权

US08208274B2 Alternating current to direct current power conversion 有权
标题翻译：交流电流直流电源转换
公开(公告)号：US08208274B2
公开(公告)日：2012-06-26
申请号：US13096005
申请日：2011-04-28
申请人： Ravisekhar Nadimpalli Raju , Luis Jose Garces , Robert Louis Steigerwald , Michael Joseph Schutten
发明人： Ravisekhar Nadimpalli Raju , Luis Jose Garces , Robert Louis Steigerwald , Michael Joseph Schutten
IPC分类号： H02M3/335 , H02M7/5387
CPC分类号： H02M3/3376 , H02M1/4258 , H02M3/285 , H02M3/33561 , H02M3/33576 , Y02B70/126 , Y02B70/1433
摘要： An alternating current to direct current (AC to DC) power conversion system is provided. The system includes a rectifier configured to convert an input AC voltage to an initial pulsating DC voltage. The system also includes an inverter configured to convert the initial pulsating DC voltage to a converted AC voltage. The system further includes a plurality of transformers, each transformer including a primary winding paired to a secondary winding, wherein each of the primary windings is coupled in series with the other primary windings, wherein the series coupled primary windings are coupled to the inverter to receive respective portions of the converted AC voltage. The system also includes a plurality of bridges, each bridge coupled to a respective secondary winding configured to receive a respective portion of a transformed AC voltage from the respective secondary windings, and coupled in parallel to the other bridges to provide a combined DC output voltage.
摘要翻译：提供了直流（AC-DC）电力转换系统的交流电。该系统包括被配置为将输入AC电压转换为初始脉动直流电压的整流器。该系统还包括被配置为将初始脉动直流电压转换为转换的交流电压的逆变器。该系统还包括多个变压器，每个变压器包括与次级绕组成对的初级绕组，其中每个初级绕组与其它初级绕组串联耦合，其中串联耦合初级绕组耦合到逆变器以接收转换后的交流电压的各部分。该系统还包括多个桥，每个桥耦合到相应的次级绕组，其被配置为从相应的次级绕组接收变换的AC电压的相应部分，并联耦合到其它桥以提供组合的DC输出电压。

20. 发明申请

US20110221387A1 SYSTEM AND METHOD FOR CHARGING AN ENERGY STORAGE SYSTEM FOR AN ELECTRIC OR HYBRID-ELECTRIC VEHICLE 审中-公开
标题翻译：用于为电动或混合动力车辆充电的储能系统的系统和方法
公开(公告)号：US20110221387A1
公开(公告)日：2011-09-15
申请号：US12720434
申请日：2010-03-09
申请人： Robert Louis Steigerwald , John Erik Hershey , Michael James Hartman , Robert Dean King
发明人： Robert Louis Steigerwald , John Erik Hershey , Michael James Hartman , Robert Dean King
IPC分类号： H02J7/00
CPC分类号： B60L11/182 , B60L53/12 , B60L53/38 , B60L53/60 , H02J7/025 , H02J50/12 , H02J50/80 , H02J50/90 , Y02T10/7005 , Y02T10/7072 , Y02T90/12 , Y02T90/121 , Y02T90/122 , Y02T90/125 , Y02T90/14
摘要： A system and method for electrical charging is disclosed. The electrical charging system comprises a first charging coil and an energy storage device coupled to the first charging coil. The energy charging system further comprises an energy charging station comprising a second charging coil disposed on a movable positioner, wherein the second charging coil is coupleable to an electrical energy source, at least one drive mechanism configured to translate the movable positioned, and a system controller. The system controller is configured to detect an event indicative of a proximity of the first charging coil to the energy charging station, translate the movable positioner such that the second charging coil is substantially aligned with, and closely spaced apart from, the first charging coil to form an electrical transformer, and initiate a charging cycle configured to transfer electrical energy to the at least one energy storage device via the electrical transformer.
摘要翻译：公开了一种用于充电的系统和方法。充电系统包括耦合到第一充电线圈的第一充电线圈和能量存储装置。所述能量充电系统还包括能量充电站，其包括设置在可移动定位器上的第二充电线圈，其中所述第二充电线圈可耦合到电能源，至少一个驱动机构，被配置为平移可移动定位器，以及系统控制器。系统控制器被配置为检测表示第一充电线圈与能量充电站的接近的事件，平移可移动定位器，使得第二充电线圈与第一充电线圈基本对准并且与第一充电线圈紧密地间隔开形成电变压器，并且启动配置成经由电变压器将电能传递到至少一个能量存储装置的充电循环。

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