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公开(公告)号：US07016205B2
公开(公告)日：2006-03-21
申请号：US10676898
申请日：2003-10-01
申请人： Robert Louis Steigerwald , Richard S. Zhang , Michael Joseph Schutten , Andrew Michael De Rooij
发明人： Robert Louis Steigerwald , Richard S. Zhang , Michael Joseph Schutten , Andrew Michael De Rooij
IPC分类号： H02M1/12
摘要： An AC ripple current reduction circuit for an AC converter having: an AC voltage source at the input; a first capacitor across which the circuit output voltage is provided; a first, main inductor in series with the first capacitor and the input; an auxiliary circuit including a second capacitor and a transformer coupled to the main inductor, the secondary of the transformer being in series with the second capacitor; and a means for enabling the flow of a time varying voltage across the first and second capacitors that has a frequency much less than the ripple frequency of the current in the main inductor.
摘要翻译： 一种用于AC转换器的AC纹波电流降低电路，具有：输入端的AC电压源; 提供电路输出电压的第一电容器; 第一个主电感器与第一个电容器和输入端串联; 辅助电路，包括第二电容器和耦合到主电感器的变压器，变压器的次级与第二电容器串联; 以及用于使第一和第二电容器之间的时变电流的流动的频率远小于主电感器中的电流的纹波频率的装置。
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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。
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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。
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公开(公告)号：USRE40907E1
公开(公告)日：2009-09-08
申请号：US11361663
申请日：2006-02-17
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）
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5.发明授权Method/system for switched frequency ripple reduction in MRI gradient coils 失效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
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。
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公开(公告)号：US06693805B1
公开(公告)日：2004-02-17
申请号：US10209034
申请日：2002-07-31
IPC分类号： H02M114
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）
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公开(公告)号：US06583705B2
公开(公告)日：2003-06-24
申请号：US09682487
申请日：2001-09-07
IPC分类号： H01F2728
CPC分类号： H01F27/2823 , H01F27/2804 , H01F30/16
摘要： A high current inductor is constructed using two single-sided or double-sided printed circuit boards having patterned copper traces thereon, a magnetic toroidal core, and multiple interconnecting wires extending between the boards. Multiple turns for the inductor are created by suitably configuring the copper traces on the printed circuit boards. Vias are employed on each circuit board for electrically interconnecting the boards to each other. Multiple thick, solid-gauge wires are situated in the vias in order to provide a very large copper area, thus providing high current carrying capability.
摘要翻译： 使用其上具有图案化铜迹线的两个单面或双面印刷电路板，磁环形磁芯和在电路板之间延伸的多个互连电线构成高电流电感器。 通过适当地配置印刷电路板上的铜迹线来创建电感器的多个匝数。 每个电路板采用通孔，用于将电路板彼此电连接。 为了提供非常大的铜面积，通孔中设有多条厚实的电线，从而提供高的载流能力。
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8.发明授权Optically powered drive circuit and method for controlling a semiconductor switch 有权光功率驱动电路及控制半导体开关的方法公开(公告)号：US07741591B2
公开(公告)日：2010-06-22
申请号：US12287281
申请日：2008-10-08
申请人： Michael Joseph Schutten , Robert Louis Steigerwald , Glen Peter Koste , Jeffrey Joseph Nasadoski
发明人： Michael Joseph Schutten , Robert Louis Steigerwald , Glen Peter Koste , Jeffrey Joseph Nasadoski
CPC分类号： H03K17/78 , H03K17/0412 , H03K2217/0036
摘要： An optically powered drive circuit and a method for controlling a first semiconductor switch are provided. The optically powered drive circuit includes a photovoltaic cell configured to receive a first light signal from a fiber optic cable and to output a first voltage in response to the first light signal. The optically powered drive circuit further includes an energy storage device electrically coupled to the photovoltaic cell configured to store electrical energy received from the first voltage and to output a second voltage. The optically powered drive circuit further includes an electrical circuit electrically coupled to both the photovoltaic cell and the energy storage device. The electrical circuit is energized by the second voltage. The electrical circuit is configured to receive the first voltage and to output a third voltage in response to the first voltage for controlling operation of the first semiconductor switch.
摘要翻译： 提供光驱动电路和控制第一半导体开关的方法。 光驱驱动电路包括被配置为从光纤电缆接收第一光信号并响应于第一光信号输出第一电压的光伏电池。 光学驱动电路还包括电耦合到光伏电池的能量存储装置，其被配置为存储从第一电压接收的电能并输出第二电压。 光学驱动电路还包括电耦合到光伏电池和能量存储装置两者的电路。 电路由第二电压供电。 电路被配置为接收第一电压并且响应于用于控制第一半导体开关的操作的第一电压而输出第三电压。
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9.发明授权Phase-shifted PWM bridge with switchable inductors to maintain zero-voltage switching at light load 有权具有可切换电感器的相移PWM电桥，以在轻负载时保持零电压开关公开(公告)号：US07609532B1
公开(公告)日：2009-10-27
申请号：US12021793
申请日：2008-01-29
IPC分类号： H02M3/335 , H02M3/24 , H02M7/5387
CPC分类号： H02M7/53871 , H02M2007/53878
摘要： A dc-to-dc pulse-width-modulated phase-shifted full bridge defines two taps, and the bridge switches are operated to produce alternating voltage between the taps. A switchable inductor is connected between each tap and a reference potential. The inductors are switched into circuit during low-load conditions to provide additional energy storage for zero-volt switching (ZVS) of the bridge switches. The switching of the inductors may be by mechanical, solid-state, optical, or magnetic switches. The magnetic switch may be a transformer winding. The switched inductor may be transformer-coupled.
摘要翻译： 一个直流到直流脉冲宽度调制的相移全桥定义了两个抽头，并且桥开关被操作以产生在抽头之间的交流电压。 每个分接头和参考电位之间连接一个可切换的电感。 电感器在低负载条件下切换到电路，为桥式开关的零电压开关（ZVS）提供额外的能量存储。 电感器的切换可以是机械，固态，光学或磁性开关。 磁性开关可以是变压器绕组。 开关电感器可以是变压器耦合的。
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公开(公告)号：US20090231890A1
公开(公告)日：2009-09-17
申请号：US12075588
申请日：2008-03-11
申请人： Michael Joseph Schutten , Robert Louis Steigerwald , John Stanley Glaser , Juan Antonio Sabate , Michael Andrew de Rooij
发明人： Michael Joseph Schutten , Robert Louis Steigerwald , John Stanley Glaser , Juan Antonio Sabate , Michael Andrew de Rooij
CPC分类号： H02M1/126 , H02M1/4225 , Y02B70/126 , Y02E10/56
摘要： A boost inductor value reduction circuit is integrated into a traditional boost power converter to greatly reduce undesirable high frequency harmonics from being fed back to the input side of the boost power converter. The boost inductor value reduction circuit is very small when compared with traditional filter techniques, is less costly than traditional filter techniques, and does not degrade the boost power converter control performance. It can also be used to reduce the size of the boost inductor without compromising the converter performance for use in energy efficient sensitive applications such as photovoltaic inverters.
摘要翻译： 升压电感值降低电路集成到传统升压功率转换器中，以大大减少不期望的高频谐波从反馈到升压功率转换器的输入侧。 与传统的滤波器技术相比，升压电感值降低电路非常小，与传统的滤波器技术相比成本较低，并且不会降低升压功率转换器的控制性能。 它也可以用于减小升压电感器的尺寸，而不会影响转换器性能，用于节能敏感应用，如光伏逆变器。
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