专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US08570774B2 Electrical power system with high-density pulse width modulated (PWM) rectifier 有权
标题翻译：具有高密度脉宽调制（PWM）整流器的电力系统
公开(公告)号：US08570774B2
公开(公告)日：2013-10-29
申请号：US12511859
申请日：2009-07-29
申请人： Ruxi Wang , Fred Wang , Rolando Burgos , Dushan Boroyevich , Kaushik Rajashekara , Stephen A. Long
发明人： Ruxi Wang , Fred Wang , Rolando Burgos , Dushan Boroyevich , Kaushik Rajashekara , Stephen A. Long
IPC分类号： H02M1/12
CPC分类号： H02M7/219 , H02M1/15
摘要： An electrical power system includes an alternating current (AC) power source configured to output an AC signal, a single phase pulse-width modulated (PWM) rectifier coupled to the AC power source and to an electrical load; a DC link capacitor coupled in parallel to the load and the PWM rectifier; and an active ripple energy storage circuit. The active ripple energy storage circuit has a first terminal, a second terminal and a third terminal, the active ripple energy storage circuit being coupled in parallel to the electrical load, the PWM rectifier and the DC link capacitor via the first terminal and the second terminal, the third terminal being coupled to the second terminal, the active ripple energy storage circuit being configured to selectively absorb and discharge at least part of the ripple energy.
摘要翻译：电力系统包括被配置为输出AC信号的交流（AC）电源，耦合到AC电源和电负载的单相脉宽调制（PWM）整流器; 与负载和PWM整流器并联耦合的直流链路电容器; 和一个有源纹波储能电路。主动波纹能量存储电路具有第一端子，第二端子和第三端子，主动纹波能量存储电路经由第一端子和第二端子并联耦合到电气负载，PWM整流器和DC链路电容器，所述第三端子耦合到所述第二端子，所述有源纹波能量存储电路被配置为选择性地吸收和放电至少部分所述纹波能量。

2. 发明申请

US20100027304A1 ELECTRICAL POWER SYSTEM WITH HIGH-DENSITY PULSE WIDTH MODULATED (PWM) RECTIFIER 有权
标题翻译：具有高密度脉冲宽度调制（PWM）整流器的电力系统
公开(公告)号：US20100027304A1
公开(公告)日：2010-02-04
申请号：US12511859
申请日：2009-07-29
申请人： Ruxi Wang , Fred Wang , Rolando Burgos , Dushan Boroyevich , Kaushik Rajashekara , Stephen A. Long
发明人： Ruxi Wang , Fred Wang , Rolando Burgos , Dushan Boroyevich , Kaushik Rajashekara , Stephen A. Long
IPC分类号： H02M7/04
CPC分类号： H02M7/219 , H02M1/15
摘要： An electrical power system includes an alternating current (AC) power source configured to output an AC signal, a single phase pulse-width modulated (PWM) rectifier coupled to the AC power source and to an electrical load; a DC link capacitor coupled in parallel to the load and the PWM rectifier; and an active ripple energy storage circuit. The active ripple energy storage circuit has a first terminal, a second terminal and a third terminal, the active ripple energy storage circuit being coupled in parallel to the electrical load, the PWM rectifier and the DC link capacitor via the first terminal and the second terminal, the third terminal being coupled to the second terminal, the active ripple energy storage circuit being configured to selectively absorb and discharge at least part of the ripple energy
摘要翻译：电力系统包括被配置为输出AC信号的交流（AC）电源，耦合到AC电源和电负载的单相脉宽调制（PWM）整流器; 与负载和PWM整流器并联耦合的直流链路电容器; 和一个有源纹波储能电路。主动波纹能量存储电路具有第一端子，第二端子和第三端子，主动纹波能量存储电路经由第一端子和第二端子并联耦合到电气负载，PWM整流器和DC链路电容器，所述第三端子耦合到所述第二端子，所述有源纹波能量存储电路被配置为选择性地吸收和放电所述纹波能量的至少一部分

3. 发明授权

US08829692B2 Multilayer packaged semiconductor device and method of packaging 有权
标题翻译：多层封装半导体器件及封装方法
公开(公告)号：US08829692B2
公开(公告)日：2014-09-09
申请号：US13603377
申请日：2012-09-04
申请人： Kaushik Rajashekara , Ruxi Wang , Zheng Chen , Dushan Boroyevich
发明人： Kaushik Rajashekara , Ruxi Wang , Zheng Chen , Dushan Boroyevich
IPC分类号： H01L23/053 , H01L23/48
CPC分类号： H01L24/49 , H01L21/56 , H01L23/3121 , H01L23/3735 , H01L23/49531 , H01L23/49537 , H01L23/49562 , H01L23/49575 , H01L24/48 , H01L2224/48091 , H01L2224/49109 , H01L2224/73265 , H01L2224/92247 , H01L2924/00014 , H01L2924/1306 , H01L2924/30107 , H01L2924/00 , H01L2224/45099 , H01L2224/05599
摘要： One embodiment is a packaged device having multiple layers. Another embodiment is a method of forming a packaged device having multiple layers. Conductive layers and insulating layers can be formed with openings exposing semiconductor devices. The semiconductor devices can be wire-bonded to the conductive layers. In some embodiments, parasitic effects and a relative footprint of the packaged device can be reduced.
摘要翻译：一个实施例是具有多个层的封装装置。另一实施例是形成具有多层的封装装置的方法。导电层和绝缘层可以形成有露出半导体器件的开口。半导体器件可以引线键合到导电层。在一些实施例中，可以减少封装装置的寄生效应和相对占地面积。

4. 发明申请

US20140061879A1 MULTILAYER PACKAGED SEMICONDUCTOR DEVICE AND METHOD OF PACKAGING 有权
标题翻译：多层包装半导体器件和封装方法
公开(公告)号：US20140061879A1
公开(公告)日：2014-03-06
申请号：US13603377
申请日：2012-09-04
申请人： Kaushik Rajashekara , Ruxi Wang , Zheng Chen , Dushan Boroyevich
发明人： Kaushik Rajashekara , Ruxi Wang , Zheng Chen , Dushan Boroyevich
IPC分类号： H01L23/495 , H01L23/52 , H01L21/56
CPC分类号： H01L24/49 , H01L21/56 , H01L23/3121 , H01L23/3735 , H01L23/49531 , H01L23/49537 , H01L23/49562 , H01L23/49575 , H01L24/48 , H01L2224/48091 , H01L2224/49109 , H01L2224/73265 , H01L2224/92247 , H01L2924/00014 , H01L2924/1306 , H01L2924/30107 , H01L2924/00 , H01L2224/45099 , H01L2224/05599
摘要： One embodiment is a packaged device having multiple layers. Another embodiment is a method of forming a packaged device having multiple layers. Conductive layers and insulating layers can be formed with openings exposing semiconductor devices. The semiconductor devices can be wire-bonded to the conductive layers. In some embodiments, parasitic effects and a relative footprint of the packaged device can be reduced.
摘要翻译：一个实施例是具有多个层的封装装置。另一实施例是形成具有多层的封装装置的方法。导电层和绝缘层可以形成有露出半导体器件的开口。半导体器件可以引线键合到导电层。在一些实施例中，可以减少封装装置的寄生效应和相对占地面积。

5. 发明申请

US20060057442A1 Method and apparatus for controlling a fuel cell system 失效
公开(公告)号：US20060057442A1
公开(公告)日：2006-03-16
申请号：US11266987
申请日：2005-11-04
申请人： John Noetzel , Karl Haltiner , Kaushik Rajashekara
发明人： John Noetzel , Karl Haltiner , Kaushik Rajashekara
IPC分类号： H01M8/00 , H01M8/04
CPC分类号： H01M8/04365 , B60L11/1881 , B60L11/1892 , B60L11/1894 , H01M8/04559 , H01M8/04589 , H01M8/04947 , Y02T90/34 , Y10S429/90
摘要： A method of operating a fuel cell includes the step of selectively connecting and disconnecting the fuel cell to at least one electrical load dependent at least in part upon at least one of a fuel cell voltage, a fuel cell current and a fuel cell temperature.

6. 发明申请

US20050266282A1 Fuel cell system having integrated central control function 失效
标题翻译：燃料电池系统具有集中的中央控制功能
公开(公告)号：US20050266282A1
公开(公告)日：2005-12-01
申请号：US10855601
申请日：2004-05-27
申请人： John Noetzel , Kaushik Rajashekara , Harry Husted
发明人： John Noetzel , Kaushik Rajashekara , Harry Husted
IPC分类号： B60L11/18 , H01M8/04 , H01M8/06
CPC分类号： H01M8/0612 , H01M8/04007 , H01M8/04089 , H01M8/04298 , H01M2250/20 , Y02T90/32
摘要： A fuel cell system in accordance with the invention includes a single, central electronic controller (CPU) for controlling at least the Air Handling sub-system, the Reformer sub-system, the Power Electronics sub-system, and the Customer Interface sub-system. The central controller provides a central location for easier serviceability; increases data transport efficiency by eliminating lengthy links between distributed controllers; eliminates the need for multiple mechanical enclosures; allows for controller thermo conditioning in one mechanical enclosure; and reduces parasitic power losses by employing a single power supply.
摘要翻译：根据本发明的燃料电池系统包括用于至少控制空气处理子系统，重整器子系统，电力电子子系统和客户接口子系统的单个中央电子控制器（CPU）。中央控制器提供了便于维修的中心位置; 通过消除分布式控制器之间的冗长链接来提高数据传输效率; 消除了对多个机械外壳的需要; 允许在一个机械外壳中进行控制器热调节; 并通过采用单个电源来减少寄生功率损耗。

7. 发明申请

US20050196659A1 Hybrid power generating system combining a fuel cell and a gas turbine 有权
标题翻译：组合燃料电池和燃气轮机的混合动力发电系统
公开(公告)号：US20050196659A1
公开(公告)日：2005-09-08
申请号：US10793303
申请日：2004-03-04
申请人： Malcolm Grieve , John MacBain , Kaushik Rajashekara , Gregory Alexander , Brett Buck , Daniel Richey
发明人： Malcolm Grieve , John MacBain , Kaushik Rajashekara , Gregory Alexander , Brett Buck , Daniel Richey
IPC分类号： F02C1/05 , F02C1/08 , H01M8/04 , H01M8/06 , H01M8/12 , B60L11/18
CPC分类号： H01M8/04097 , F02C1/05 , F02C1/08 , F05D2220/60 , H01M8/04022 , H01M8/0612 , H01M2250/407 , Y02E20/16 , Y02E60/563
摘要： A system for co-generation of electricity combining a hydrocarbon catalytic reformer, an SOFC assembly and a generator driven by a gas turbine. The fuel cell assembly recycles a high percentage of anode exhaust gas into the reformer. Oxygen for reforming is derived from water in an endothermic process. The stack exit temperature is normally above 800° C. DC power from the fuel cell assembly and AC power from the gas turbine generator are directed to a power conditioner. Anode exhaust gas including carbon monoxide and hydrogen is divided into a plurality of portions by which heat may be added to the reforming, gas turbine, and cathode air heating processes. Water may be recovered from the exhaust. A power system in accordance with the invention is capable of operating at a higher total efficiency than either the fuel cell component or the gas turbine component alone.
摘要翻译：一种用于共同生成电力的系统，其组合烃催化重整器，SOFC组件和由燃气轮机驱动的发电机。燃料电池组件将高百分比的阳极废气再循环到重整器中。用于重整的氧气是在吸热过程中来自水。堆叠出口温度通常高于800℃。来自燃料电池组件的直流电力和来自燃气涡轮发电机的AC电力被引导到功率调节器。包括一氧化碳和氢的阳极废气被分成多个部分，通过该部分可以向重整燃气轮机和阴极空气加热过程加热。水可以从废气中回收。根据本发明的电力系统能够以比燃料电池部件或燃气轮机部件单独地更高的总效率运行。

8. 发明授权

US06321145B1 Method and apparatus for a fuel cell propulsion system 失效
标题翻译：燃料电池推进系统的方法和装置
公开(公告)号：US06321145B1
公开(公告)日：2001-11-20
申请号：US09771532
申请日：2001-01-29
申请人： Kaushik Rajashekara
发明人： Kaushik Rajashekara
IPC分类号： B60L1101
CPC分类号： B60L11/1881 , B60L2210/12 , B60L2210/14 , Y02T10/7225 , Y02T10/7233 , Y02T90/34 , Y10S429/90
摘要： Propulsion control system and method are provided for use in vehicles including a propulsion motor that is powered by a fuel cell. The fuel cell unit produces a compatible voltage for the propulsion motor, thereby removing the need for a dc/dc boost converter. A buck/boost converter and a standard 12 volt battery are used to start the fuel cell. An inverter receives dc electric voltage from the fuel cell and outputs ac electric voltage to the propulsion motor. A vehicle controller receives a voltage input from the fuel cell unit and outputs a current reference to a comparing device. The comparing device compares the current reference from the vehicle controller to an actual current of the fuel cell unit and then outputs a signal to a PI control which outputs a control signal to a fuel cell controller, whereby the power output of the fuel cell is controlled based on the actual current of the fuel cell.
摘要翻译：提供用于包括由燃料电池供电的推进电动机的车辆中的推进控制系统和方法。燃料电池单元为推进电机产生兼容的电压，从而消除了对直流/直流升压转换器的需要。使用降压/升压转换器和标准的12伏电池来启动燃料电池。逆变器从燃料电池接收直流电压，并向推进电动机输出交流电压。车辆控制器接收从燃料电池单元输入的电压，并将电流基准输出到比较装置。比较装置将来自车辆控制器的当前参考值与燃料电池单元的实际电流进行比较，然后将信号输出到向控制信号输出到PI控制器，由此控制燃料电池的功率输出基于燃料电池的实际电流。

9. 发明授权

US6008618A Zero speed start-up for a speed sensorless induction motor drive 失效
标题翻译：无速度感应电机驱动器的零速启动
公开(公告)号：US6008618A
公开(公告)日：1999-12-28
申请号：US979021
申请日：1997-11-26
申请人： Bimal Kumar Bose , Nitinkumar Ratilal Patel , Kaushik Rajashekara
发明人： Bimal Kumar Bose , Nitinkumar Ratilal Patel , Kaushik Rajashekara
IPC分类号： H02P21/00 , H02P7/00 , H02P5/40
CPC分类号： H02P21/34
摘要： An induction motor drive uses direct vector control for zero speed start up. According to the invention, a speed sensorless induction motor is controlled at all speeds, including zero or substantially zero speed, using direct vector control. In order to utilize direct vector control at all speeds, it is necessary to derive accurate stator flux vectors at all speeds. This is accomplished in the present invention by calculating two sets of stator flux vectors in diverse manners. A first set of flux vectors is derived from measured stator terminal voltage quantities, and a second set of flux vectors is derived from measured stator current quantities. The first set of flux vectors is valid at non-zero speed and the second set of flux vectors is valid at substantially zero speed. The direct vector control utilizes one of the two sets of flux vectors in accordance with predetermined criteria indicative of zero and non-zero speed conditions.
摘要翻译：感应电动机驱动器使用直接矢量控制进行零速启动。根据本发明，使用直接矢量控制，速度传感器感应电动机以包括零或基本零速度的所有速度被控制。为了在所有速度下利用直接矢量控制，有必要在所有速度下导出精确的定子通量矢量。这是通过以不同的方式计算两组定子磁链矢量在本发明中实现的。从测量的定子端子电压量导出第一组磁通矢量，并且从测量的定子电流量导出第二组磁通矢量。第一组磁通矢量在非零速度下有效，第二组磁通矢量基本为零速度有效。根据表示零和非零速度条件的预定标准，直接矢量控制利用两组磁通矢量中的一组。

10. 发明授权

US5592371A DC link inverter 失效
标题翻译：直流链路逆变器
公开(公告)号：US5592371A
公开(公告)日：1997-01-07
申请号：US443214
申请日：1995-05-17
申请人： Kaushik Rajashekara , Alexander Kurnia
发明人： Kaushik Rajashekara , Alexander Kurnia
IPC分类号： H02M7/48 , H02M7/44
CPC分类号： H02M7/4826
摘要： A DC Link for use with a multi-phase DC to AC converter provides soft-switch opportunities to the main inverter devices only when such opportunities are required. A quasi-resonant rail swings from source to ground potential either with or without the assistance of an auxiliary switch. The quasi-resonant rail swings from ground to source potential with the assistance of an auxiliary switch. Low switch stresses are characteristic in both the main inverter switch devices and the DC link switch devices. Main power is carried predominantly through a DC link switch thereby minimizing power handling requirements of DC link reactive components.
摘要翻译：与多相直流到交流转换器一起使用的直流母线仅在需要这些机会时才向主逆变器装置提供软开关机会。准谐振轨从源极到地电位摆动，无论辅助开关是否有辅助。在辅助开关的帮助下，准谐振轨从地电位摆动到电位。主开关器件和直流母线开关器件都具有低开关应力。主电源主要通过直流链路开关进行传输，从而最大程度地降低直流母线无功元件的功率处理要求。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式