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    ALTERNATING CURRENT TO DIRECT CURRENT POWER CONVERSION
    21.
    发明申请
    ALTERNATING CURRENT TO DIRECT CURRENT POWER CONVERSION 有权
    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。

    High efficiency photovoltaic inverter
    22.
    发明申请
    High efficiency photovoltaic inverter 有权
    高效光伏逆变器

    公开(公告)号：US20090323379A1

    公开(公告)日：2009-12-31

    申请号：US12215505

    申请日：2008-06-27

    申请人： Michael Andrew de Rooij ,  John Stanley Glaser ,  Robert Louis Steigerwald

    发明人： Michael Andrew de Rooij ,  John Stanley Glaser ,  Robert Louis Steigerwald

    IPC分类号： H02M7/48

    CPC分类号： H02M7/53873 ,  H02J3/38 ,  H02M1/44 ,  H02M2001/0048 ,  H02M2001/007 ,  Y02B70/1491

    摘要： A photovoltaic (PV) inverter includes a single DC to AC converter configured to operate solely in a buck mode for PV array voltage levels greater than a connected power grid instantaneous voltage plus converter margin, and further configured to operate solely in a boost mode for PV array voltage levels plus margin less than the connected power grid instantaneous voltage, such that the PV inverter generates a rectified sine wave current in response to the available PV array power, and further such that the PV inverter generates a utility grid current in response to the rectified sine wave current.

    摘要翻译： 光伏（PV）逆变器包括单个DC至AC转换器，其被配置为仅在降压模式下操作用于大于连接的电网瞬时电压加转换器裕度的光伏阵列电压电平，并且还被配置为仅在PV的升压模式下操作 阵列电压电平加上小于连接的电网瞬时电压的裕度，使得PV逆变器响应于可用的光伏阵列功率而产生整流的正弦波电流，并且还使得PV逆变器响应于 整流正弦波电流。

    Ripple cancellation circuit for ultra-low-noise power supplies
    23.
    再颁专利
    Ripple cancellation circuit for ultra-low-noise power supplies 有权
    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）

    Diagnostic circuit and method for predicting fluorescent lamp failure by monitoring filament currents
    26.
    发明授权
    Diagnostic circuit and method for predicting fluorescent lamp failure by monitoring filament currents 失效
    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。

    Florescent lamp ballast control for zero -voltage switching operation over wide input voltage range and over voltage protection
    27.
    发明授权
    Florescent lamp ballast control for zero -voltage switching operation over wide input voltage range and over voltage protection 失效
    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。

    DC to DC power converters and methods of controlling the same
    29.
    发明授权
    DC to DC power converters and methods of controlling the same 有权
    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。

    Alternating current to direct current power conversion
    30.
    发明授权
    Alternating current to direct current power conversion 有权
    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。