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1.发明授权Cross current control for power converter systems and integrated magnetic choke assembly 有权电力转换器系统和集成式磁阻组件的交流电流控制公开(公告)号：US06917271B2
公开(公告)日：2005-07-12
申请号：US10727390
申请日：2003-12-03
摘要： A cross current control system for multiple, parallel-coupled power converters includes common mode chokes, local cross current feedback controllers, and local converter controllers. Each common mode choke is coupled to a respective power converter. Each local cross current feedback controller is configured for receiving common mode cross currents from a respective local cross current detector, calculating a resultant cross current, and generating a local feedback control signal. Each local converter controller is configured for using a respective local feedback control signal to drive the respective power converter in accordance with a coordinated switching pattern. An integral choke assembly includes a common mode choke and a differential mode choke with common and differential mode choke cores configured with at least one magnetic flux path being shared by magnetic flux generated by common mode coils and differential mode coils.
摘要翻译： 用于多个并联耦合的功率转换器的交叉电流控制系统包括共模扼流圈，局部交叉电流反馈控制器和本地转换器控制器。 每个共模扼流圈耦合到相应的功率转换器。 每个局部交叉电流反馈控制器被配置为从相应的局部交叉电流检测器接收共模交叉电流，计算合成的交叉电流以及产生局部反馈控制信号。 每个本地转换器控制器被配置为使用相应的本地反馈控制信号来根据协调的切换模式来驱动相应的功率转换器。 整体式扼流圈组件包括共模扼流圈和具有公共和差模扼流圈的差模扼流圈，其配置有由共模线圈和差模线圈产生的磁通共享的至少一个磁通路径。
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公开(公告)号：US06751106B2
公开(公告)日：2004-06-15
申请号：US10064547
申请日：2002-07-25
IPC分类号： H02M700
摘要： A cross current control system for multiple, parallel-coupled power converters includes common mode chokes, local cross current feedback controllers, and local converter controllers. Each common mode choke is coupled to a respective power converter. Each local cross current feedback controller is configured for receiving common mode cross currents from a respective local cross current detector, calculating a resultant cross current, and generating a local feedback control signal. Each local converter controller is configured for using a respective local feedback control signal to drive the respective power converter in accordance with a coordinated switching pattern. An integral choke assembly includes a common mode choke and a differential mode choke with common and differential mode choke cores configured with at least one magnetic flux path being shared by magnetic flux generated by common mode coils and differential mode coils.
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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
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。
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4.发明授权Power converter methods and apparatus for variable speed high power machines 有权用于变速高功率机器的功率转换器方法和装置公开(公告)号：US07324360B2
公开(公告)日：2008-01-29
申请号：US11251727
申请日：2005-10-17
申请人： Allen Michel Ritter , Richard S. Zhang , Luis Jose Garces , Rajib Datta , Ravisekhar Nadimpalli Raju , Mark E. Shepard
发明人： Allen Michel Ritter , Richard S. Zhang , Luis Jose Garces , Rajib Datta , Ravisekhar Nadimpalli Raju , Mark E. Shepard
IPC分类号： H02M7/00
摘要： Methods and apparatus for converting power from a power source are described. In one example embodiment, the method includes controlling multiple transformer and switchgear units coupled to a power source, and controlling multiple converter units connected in parallel. Each converter unit is coupled to a respective one of the transformer and switchgear units to form an individual thread. The transformer and switchgear unit and power converters are controlled so that the carrier waveforms for each individual thread are interleaved between each other over a carrier cycle.
摘要翻译： 描述用于从电源转换功率的方法和装置。 在一个示例实施例中，该方法包括控制耦合到电源的多个变压器和开关设备单元，以及控制并联连接的多个转换器单元。 每个转换器单元耦合到变压器和开关设备单元中的相应一个以形成单个螺纹。 控制变压器和开关设备单元和功率转换器，使得每个单独线程的载波波形在载波周期之间彼此交错。
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公开(公告)号：US20100014325A1
公开(公告)日：2010-01-21
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
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。
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公开(公告)号：US07116166B2
公开(公告)日：2006-10-03
申请号：US10867598
申请日：2004-06-15
申请人： Juan Antonio Sabate , Richard S. Zhang , Luis Jose Garces , Paul Michael Szczesny , Qiming Li , William Frederick Wirth
发明人： Juan Antonio Sabate , Richard S. Zhang , Luis Jose Garces , Paul Michael Szczesny , Qiming Li , William Frederick Wirth
CPC分类号： G01R33/3852 , H03F1/0277 , H03F3/211 , H03F3/2173 , H03F3/2178 , H03F3/72
摘要： A gradient amplifier arrangement is described that comprises a gradient amplifier power stage. The device may be employed to provide a current to a gradient coil, as in a MRI system. The circuitry disclosed includes a series coupling of a first bridge amplifier operating at a first voltage, a second bridge amplifier operating at a second voltage, a third bridge amplifier operating at a third voltage, and a gradient amplifier control stage. The amplifiers may provide output voltages at different levels, and may be switched at different times and frequencies to provide a range of output voltage and current levels.
摘要翻译： 描述了包括梯度放大器功率级的梯度放大器布置。 该装置可用于向梯度线圈提供电流，如在MRI系统中。 所公开的电路包括以第一电压工作的第一桥式放大器，以第二电压工作的第二桥式放大器，以第三电压工作的第三桥式放大器和梯度放大器控制级的串联耦合。 放大器可以提供不同电平的输出电压，并且可以在不同的时间和频率下切换以提供输出电压和电流水平的范围。
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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：US06924563B2
公开(公告)日：2005-08-02
申请号：US10160788
申请日：2002-05-31
CPC分类号： F02C7/268
摘要： An apparatus for controlling a microturbine, the apparatus including: a rectifier adapted for converting at least one generated voltage from the microturbine to a DC link voltage; an inverter adapted for converting the DC link voltage to at least one inverter output voltage, the at least one inverter output voltage being electrically coupled to an external power bus; a starter drive adapted for converting at least one starter input voltage to at least one starter output voltage, the at least one starter input voltage being electrically coupled to the external power bus, the at least one starter output voltage being electrically coupled to the microturbine.
摘要翻译： 一种用于控制微型涡轮机的装置，该装置包括：整流器，其适于将来自微型涡轮机的至少一个产生的电压转换成DC链路电压; 一个逆变器，用于将直流链路电压转换成至少一个逆变器输出电压，所述至少一个逆变器输出电压电耦合到外部电力总线; 启动器驱动器，其适于将至少一个起动器输入电压转换为至少一个起动器输出电压，所述至少一个起动器输入电压电耦合到所述外部电力总线，所述至少一个起动器输出电压电耦合到所述微型涡轮机。
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公开(公告)号：US09013904B2
公开(公告)日：2015-04-21
申请号：US13435105
申请日：2012-03-30
申请人： Di Zhang , Luis Jose Garces
发明人： Di Zhang , Luis Jose Garces
CPC分类号： H02M7/493 , H02J1/02 , H02J3/36 , H02J2003/365 , H02M2001/0048 , H02M2001/0077 , Y02B70/1491 , Y02E60/60
摘要： A power transmission system is provided. The power transmission system includes a power source for providing power. The system also includes a power conversion system comprising power converters coupled to receive the power and convert the power to DC power, wherein the power conversion system comprises a plurality of legs each configured for pulse width modulation. The system further includes a controller comprising an analysis module programmed for determining a number of legs for switching for minimizing a cost function based on operating conditions of the power conversion system. The controller also includes a switch control module programmed for using the number of legs determined by the analysis module for generating switching commands for the power conversion system. The system also includes a DC transmission bus coupled to receive the DC power and transmit the DC power.
摘要翻译： 提供电力传输系统。 电力传输系统包括用于提供电力的电源。 该系统还包括电力转换系统，其包括被耦合以接收电力并将功率转换成DC电力的功率转换器，其中所述功率转换系统包括多个腿，每个腿被配置用于脉宽调制。 该系统还包括控制器，该控制器包括分析模块，该分析模块被编程为基于功率转换系统的操作条件来确定用于切换的多个支路以最小化成本功能。 该控制器还包括开关控制模块，该开关控制模块被编程用于使用由分析模块确定的腿数来产生用于功率转换系统的切换命令。 该系统还包括耦合以接收DC电力并传输DC电力的DC传输总线。
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公开(公告)号：US20130258733A1
公开(公告)日：2013-10-03
申请号：US13435105
申请日：2012-03-30
申请人： Di Zhang , Luis Jose Garces
发明人： Di Zhang , Luis Jose Garces
IPC分类号： H02M7/217
CPC分类号： H02M7/493 , H02J1/02 , H02J3/36 , H02J2003/365 , H02M2001/0048 , H02M2001/0077 , Y02B70/1491 , Y02E60/60
摘要： A power transmission system is provided. The power transmission system includes a power source for providing power. The system also includes a power conversion system comprising power converters coupled to receive the power and convert the power to DC power, wherein the power conversion system comprises a plurality of legs each configured for pulse width modulation. The system further includes a controller comprising an analysis module programmed for determining a number of legs for switching for minimizing a cost function based on operating conditions of the power conversion system. The controller also includes a switch control module programmed for using the number of legs determined by the analysis module for generating switching commands for the power conversion system. The system also includes a DC transmission bus coupled to receive the DC power and transmit the DC power.
摘要翻译： 提供电力传输系统。 电力传输系统包括用于提供电力的电源。 该系统还包括电力转换系统，其包括被耦合以接收电力并将功率转换成DC电力的功率转换器，其中所述功率转换系统包括多个腿，每个腿被配置用于脉宽调制。 该系统还包括控制器，该控制器包括分析模块，该分析模块被编程为基于功率转换系统的操作条件来确定用于切换的多个支路以最小化成本功能。 该控制器还包括开关控制模块，该开关控制模块被编程用于使用由分析模块确定的腿数来产生用于功率转换系统的切换命令。 该系统还包括耦合以接收DC电力并传输DC电力的DC传输总线。
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