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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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2.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：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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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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5.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：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：US07446435B2
公开(公告)日：2008-11-04
申请号：US11289919
申请日：2005-11-30
申请人： Richard S. Zhang , Changyong Wang , Lei Li , James Patrick Lyons , Zhuohui Tan , Allen Michael Ritter
发明人： Richard S. Zhang , Changyong Wang , Lei Li , James Patrick Lyons , Zhuohui Tan , Allen Michael Ritter
IPC分类号： H02M1/12
CPC分类号： H02M5/4585 , H02J3/386 , H02M1/12 , Y02E10/763
摘要： A power system for providing an output power to a load is provided. The system comprises a generator configured to generate an alternating current input power and an power converter system coupled to the generator and configured to generate an output power and provide the output power to the load through at least one transformer. The system further comprises a converter control system coupled to the converter system and configured to drive the converter system in an interleaved pattern to reduce harmonic components in the output power and the alternating current input power.
摘要翻译： 提供了一种用于向负载提供输出功率的电力系统。 该系统包括被配置为产生交流输入功率的发电机和耦合到发电机并被配置为产生输出功率并且通过至少一个变压器向负载提供输出功率的功率转换器系统。 该系统还包括耦合到转换器系统并被配置为以交替模式驱动转换器系统以降低输出功率和交流输入功率中的谐波分量的转换器控制系统。
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公开(公告)号：US06765452B2
公开(公告)日：2004-07-20
申请号：US10212390
申请日：2002-08-06
申请人： Xiaoming Yuan , Fei Wang , Richard S. Zhang
发明人： Xiaoming Yuan , Fei Wang , Richard S. Zhang
IPC分类号： H03G1104
CPC分类号： H02M1/12 , H02M7/53871
摘要： A method for damping an LC filter coupled to a converter and generating a filter signal. The method comprises sensing the filter signal and processing the filter signal to generate a corresponding feedback signal. The feedback signal is subtracted from a controller signal to generate a difference signal. The difference signal is used for damping the LC filter.
摘要翻译： 一种用于阻尼耦合到转换器并产生滤波器信号的LC滤波器的方法。 该方法包括感测滤波器信号并处理滤波器信号以产生相应的反馈信号。 从控制器信号中减去反馈信号以产生差分信号。 差分信号用于阻尼LC滤波器。
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公开(公告)号：US20110260547A1
公开(公告)日：2011-10-27
申请号：US13178800
申请日：2011-07-08
申请人： Changyong Wang , Zhuohui Tan , Robert William Delmerico , Allen Michael Ritter , Ralph Teichmann , Richard S. Zhang , Robert Allen Seymour , Xiaoming Yuan
发明人： Changyong Wang , Zhuohui Tan , Robert William Delmerico , Allen Michael Ritter , Ralph Teichmann , Richard S. Zhang , Robert Allen Seymour , Xiaoming Yuan
IPC分类号： H02J5/00
CPC分类号： H02M7/53871 , H02J3/01 , H02J3/40 , Y02E40/40 , Y10T307/707
摘要： A method of controlling electrical power systems coupled to an electrical connection point includes obtaining carrier signals and fundamental waveforms from electrical power systems coupled to at least two renewable energy sources, generating pulse width modulation (PWM) signals using the carrier signals and the fundamental waveforms while interleaving carrier signals, fundamental waveforms, or a combination of carrier signals and fundamental waveforms of the electrical power systems, and driving grid side converters of the electrical power systems with the PWM signals.
摘要翻译： 控制耦合到电连接点的电力系统的方法包括从耦合到至少两个可再生能源的电力系统获得载波信号和基本波形，使用载波信号和基波形成脉冲宽度调制（PWM）信号，同时 交织载波信号，基波，或电力系统的载波信号和基波的组合，以及利用PWM信号驱动电力系统的电网侧转换器。
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公开(公告)号：US20100156192A1
公开(公告)日：2010-06-24
申请号：US12341862
申请日：2008-12-22
申请人： Changyong Wang , Zhuohui Tan , Robert William Delmerico , Allen Michael Ritter , Ralph Teichmann , Richard S. Zhang , Robert Allen Seymour , Xiaoming Yuan
发明人： Changyong Wang , Zhuohui Tan , Robert William Delmerico , Allen Michael Ritter , Ralph Teichmann , Richard S. Zhang , Robert Allen Seymour , Xiaoming Yuan
IPC分类号： H02M7/48
CPC分类号： H02M7/53871 , H02J3/01 , H02J3/40 , Y02E40/40 , Y10T307/707
摘要： A power generation system comprises at least two electrical systems connected at an electrical connection point. Each electrical system comprises a power conversion system comprising a converter including a plurality of switches for converting direct current power into alternating current power. The power generation system comprises a control system including at least two pulse width modulation (PWM) modulators, each PWM modulator for obtaining a fundamental waveform and a carrier signal, using the fundamental and carrier signals to generate a PWM pattern, and for providing the PWM pattern to a respective converter for driving the switches of the respective converter. The control system is configured to interleave carrier signals, fundamental waveforms, or a combination of carrier signals and fundamental waveforms of the at least two electrical systems to generate interleaved PWM patterns respectively for the at least two converters.
摘要翻译： 发电系统包括在电连接点处连接的至少两个电气系统。 每个电气系统包括电力转换系统，其包括转换器，该转换器包括用于将直流电力转换为交流电力的多个开关。 发电系统包括一个包括至少两个脉冲宽度调制（PWM）调制器的控制系统，每个PWM调制器用于获得基波和载波信号，使用基波和载波信号产生PWM模式，并提供PWM 模式到用于驱动各个转换器的开关的相应转换器。 控制系统被配置为交替载波信号，基波或者载波信号和至少两个电气系统的基波形的组合，以分别为至少两个转换器产生交错PWM模式。
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