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1. 发明授权

US07239036B2 System and method for power control in wind turbines 有权
公开(公告)号：US07239036B2
公开(公告)日：2007-07-03
申请号：US11192840
申请日：2005-07-29
申请人： John Douglas D'Atre , Anthony Michael Klodowski , Allen Michael Ritter , David Smith , Robert Gregory Wagoner , Luis Jose Garces , Henning Luetze
发明人： John Douglas D'Atre , Anthony Michael Klodowski , Allen Michael Ritter , David Smith , Robert Gregory Wagoner , Luis Jose Garces , Henning Luetze
IPC分类号： H02P9/04
CPC分类号： F03D7/0272 , F03D7/028 , F03D9/25 , F03D9/255 , F05B2220/7062 , F05B2260/80 , F05B2270/1011 , H02P9/007 , H02P2101/15 , Y02E10/723 , Y02E10/725
摘要： A system and method for power control in wind turbines are provided. The method includes switching a plurality of switching devices in a power conversion component of the wind turbine system in a normal switching mode to provide power flow through the power conversion component. The method further includes switching the plurality of switches devices in the power conversion component of the wind turbine system in a short circuit switching mode to prevent power flow through the power conversion component.

2. 发明授权

US07528505B2 Systems and methods for balancing of DC link in three level PWM power conversion equipment 有权
标题翻译：三电平PWM电力转换设备中直流母线平衡的系统和方法
公开(公告)号：US07528505B2
公开(公告)日：2009-05-05
申请号：US11535954
申请日：2006-09-27
申请人： Allen Michael Ritter , John Douglas D'Atre , Cyrus David Harbourt , Rafael Ignacio Bedia
发明人： Allen Michael Ritter , John Douglas D'Atre , Cyrus David Harbourt , Rafael Ignacio Bedia
IPC分类号： H02J1/00
CPC分类号： H02M7/219 , H02M2001/123 , Y10T307/707
摘要： A power converting apparatus and method providing for the addition of a fourth power connection wire to the neutral point of the normal three phase load circuit. This allows delivery of combined current from the center of the DC link voltage to load. The added control enables a third harmonic injection to flow and allows for increased power rating per peak amp handled by the conversion system. Limiting of faults to the positive half versus the negative half of the DC system allows for more robust behavior when encountering these fault conditions.
摘要翻译：一种电力转换装置和方法，用于向正常三相负载电路的中性点添加第四电力连接线。这允许将组合的电流从DC链路电压的中心传递到负载。添加的控制使三次谐波注入流动，并允许由转换系统处理的每个峰值放大器的额定功率增加。将故障限制在直流系统的正半部分与负半部分之间允许在遇到这些故障条件时具有更强大的性能。

3. 发明授权

US08736207B2 Method and system for power conversion 有权
标题翻译：电源转换方法及系统
公开(公告)号：US08736207B2
公开(公告)日：2014-05-27
申请号：US12983574
申请日：2011-01-03
申请人： Allen Michael Ritter , Robert Allen Seymour , Rajib Datta , John Douglas D'Atre
发明人： Allen Michael Ritter , Robert Allen Seymour , Rajib Datta , John Douglas D'Atre
IPC分类号： H02P6/06 , H02P6/16
CPC分类号： H02M7/53873 , H02M1/40 , H02P27/06 , H02P27/10 , H02P27/12
摘要： A method and system for a commutation control circuit are provided. The system includes an integrating voltage counter electrically coupled to an electrical power bus, wherein the integrating voltage counter is configured to integrate over time a voltage signal received from the power bus and to generate a trigger signal when the integrated voltage signal equals a predetermined count. The system also includes a plurality of transistor pairs configured to receive a trigger signal generated by the integrating voltage counter and electrically coupled to respective windings of a motor.
摘要翻译：提供了一种用于换向控制电路的方法和系统。该系统包括电耦合到电力总线的积分电压计数器，其中积分电压计数器被配置为随着时间积分从电力总线接收的电压信号并且当积分电压信号等于预定计数时产生触发信号。该系统还包括多个晶体管对，其被配置为接收由积分电压计数器产生的触发信号并电耦合到电动机的相应绕组。

4. 发明授权

US07633775B2 Power conversion system and method 有权
标题翻译：电力转换系统及方法
公开(公告)号：US07633775B2
公开(公告)日：2009-12-15
申请号：US11010147
申请日：2004-12-10
申请人： Rajib Datta , Allen Michael Ritter , Kunlun Chen , John Douglas D'Atre
发明人： Rajib Datta , Allen Michael Ritter , Kunlun Chen , John Douglas D'Atre
IPC分类号： H02M1/12
CPC分类号： H02M7/49
摘要： A power generation system for supplying a resultant output voltage is provided. The system comprises a power converter system. The power converter system comprises at least two power converter bridges, each configured for switching at a low frequency and generating a corresponding converter output voltage including a fundamental voltage component and harmonic components, and at least two power converter transformers. Each power converter bridge is coupled to a primary winding of a corresponding power converter transformer and a secondary winding of one power converter transformer is coupled to a secondary winding of a second power converter transformer. The resultant output voltage comprises a sum of the fundamental voltage components of each converter output voltage.
摘要翻译：提供了用于提供合成输出电压的发电系统。该系统包括功率转换器系统。功率转换器系统包括至少两个功率转换器桥，每个功率转换器桥被配置为以低频切换并产生包括基波电压分量和谐波分量的相应的转换器输出电压，以及至少两个功率转换器变压器。每个功率转换器桥耦合到相应的功率转换器变压器的初级绕组，并且一个功率变换器变压器的次级绕组耦合到第二功率变换器变压器的次级绕组。所得到的输出电压包括每个转换器输出电压的基波电压分量之和。

5. 发明申请

US20120169259A1 METHOD AND SYSTEM FOR POWER CONVERSION 有权
标题翻译：电力转换方法与系统
公开(公告)号：US20120169259A1
公开(公告)日：2012-07-05
申请号：US12983574
申请日：2011-01-03
申请人： Allen Michael Ritter , Robert Allen Seymour , Rajib Datta , John Douglas D'Atre
发明人： Allen Michael Ritter , Robert Allen Seymour , Rajib Datta , John Douglas D'Atre
IPC分类号： H02P6/14
CPC分类号： H02M7/53873 , H02M1/40 , H02P27/06 , H02P27/10 , H02P27/12
摘要： A method and system for a commutation control circuit are provided. The system includes an integrating voltage counter electrically coupled to an electrical power bus, wherein the integrating voltage counter is configured to integrate over time a voltage signal received from the power bus and to generate a trigger signal when the integrated voltage signal equals a predetermined count. The system also includes a plurality of transistor pairs configured to receive a trigger signal generated by the integrating voltage counter and electrically coupled to respective windings of a motor.
摘要翻译：提供了一种用于换向控制电路的方法和系统。该系统包括电耦合到电力总线的积分电压计数器，其中积分电压计数器被配置为随着时间积分从电力总线接收的电压信号并且当积分电压信号等于预定计数时产生触发信号。该系统还包括多个晶体管对，其被配置为接收由积分电压计数器产生的触发信号并电耦合到电动机的相应绕组。

6. 发明申请

US20080074907A1 SYSTEMS AND METHODS FOR BALANCING OF DC LINK IN THREE LEVEL PWM POWER CONVERSION EQUIPMENT 有权
标题翻译：直流链路在三电平PWM功率转换设备中的平衡的系统和方法
公开(公告)号：US20080074907A1
公开(公告)日：2008-03-27
申请号：US11535954
申请日：2006-09-27
申请人： Allen Michael Ritter , John Douglas D'Atre , Cyrus David Harbourt , Rafael Ignacio Bedia
发明人： Allen Michael Ritter , John Douglas D'Atre , Cyrus David Harbourt , Rafael Ignacio Bedia
IPC分类号： H02M1/14
CPC分类号： H02M7/219 , H02M2001/123 , Y10T307/707
摘要： A power converting apparatus and method providing for the addition of a fourth power connection wire to the neutral point of the normal three phase load circuit. This allows delivery of combined current from the center of the DC link voltage to load. The added control enables a third harmonic injection to flow and allows for increased power rating per peak amp handled by the conversion system. Limiting of faults to the positive half versus the negative half of the DC system allows for more robust behavior when encountering these fault conditions.
摘要翻译：一种电力转换装置和方法，用于向正常三相负载电路的中性点添加第四电力连接线。这允许将组合的电流从DC链路电压的中心传递到负载。添加的控制使三次谐波注入流动，并允许由转换系统处理的每个峰值放大器的额定功率增加。将故障限制在直流系统的正半部分与负半部分之间允许在遇到这些故障条件时具有更强大的性能。

7. 发明授权

US4044285A Method and apparatus for controlling variable speed, controlled current induction motor drive systems 失效
公开(公告)号：US4044285A
公开(公告)日：1977-08-23
申请号：US605848
申请日：1975-08-19
申请人： Allan Barr Plunkett , John Douglas D'Atre
发明人： Allan Barr Plunkett , John Douglas D'Atre
IPC分类号： H02P21/10 , H02P5/40
CPC分类号： H02P21/10 , H02P2207/01
摘要： A new induction motor control method and system utilizes one more electric power inverters each supplying a separate induction motor with alternating current excitation power. The respective inverters preferably comprise auto-sequential commutated controlled current inverters. Direct current is supplied to each inverter in the system from a common direct current power supply preferably comprising a phase controlled rectifier circuit with individual current smoothing inductors connected in the direct current link to each power inverter for isolation purposes. A common operator controlled power level control module is provided for controlling the magnitude of the output current supplied from the common phase controlled rectifier to all of the inverters in parallel. Respective motor flux sensing means are provided for each induction motor for deriving individual feedback control signals representative of the flux developed by the respective induction motors. The flux feedback signal is summed with an input command value of a flux control signal in a suitable summing circuit, and the error signal is supplied through a suitable compensating circuit for regulating the flux level of the respective induction motors by individually controlling the frequency of the excitation current supplied to the stator windings of the motor by its associated inverter. In a preferred embodiment the actual electro-magnetic flux produced across the induction motor stator-rotor gap is sensed and fed back to the summing circuit for control purposes. This sensed actual value of motor flux signal also is utilized to derive an actual value of torque feedback control signal that is employed in controlling the magnitude of the direct current supplied by the common phase controlled rectifier to all of the inverters in parallel. It is also preferred to employ a phase lock-loop converter as the compensating circuit in the frequency control.

8. 发明授权

US4044284A Alternating current motor control method and system 失效
标题翻译：交流电机控制方法和系统
公开(公告)号：US4044284A
公开(公告)日：1977-08-23
申请号：US605847
申请日：1975-08-19
申请人： Allan Barr Plunkett , John Douglas D'Atre
发明人： Allan Barr Plunkett , John Douglas D'Atre
IPC分类号： H02P21/10 , H02P5/40
CPC分类号： H02P21/10
摘要： A new and improved motor control method and system wherein the frequency of the rotating electro-magnetic flux produced in an alternating current machine, is sensed and compared to a desired value of machine flux frequency to derive an output error control signal. The output error control signal is then applied to control the frequency of the alternating current supplied to the machine in a direction and by an amount necessary to zero any difference in the sensed frequency and the desired frequency of machine flux. In preferred embodiments the actual value of the electromagnetic flux produced across the rotor-stator gap of the motor, is sensed and used as the controlling criterion in the motor control system. The magnitude of the alternating current supplied to the motor is separately controlled in accordance with some other predetermined motor operating characteristics such as motor torque, load current, etc.
摘要翻译：一种新的改进的电机控制方法和系统，其中检测在交流电机中产生的旋转电磁通量的频率，并将其与机器通量频率的期望值进行比较以导出输出误差控制信号。然后施加输出误差控制信号以控制提供给机器的交流电流的频率，并且以所需的量来控制感测频率和期望频率的机器通量的任何差异。在优选实施例中，电动机的转子 - 定子间隙产生的电磁通量的实际值被感测并用作电动机控制系统中的控制标准。根据电动机转矩，负载电流等一些其他预定的电动机工作特性，单独控制供给电动机的交流电流的大小。

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