公开(公告)号：US08018740B2

公开(公告)日：2011-09-13

申请号：US12683743

申请日：2010-01-07

申请人： Bosheng Sun ,  Yuwei Luo ,  Zhong Ye

发明人： Bosheng Sun ,  Yuwei Luo ,  Zhong Ye

IPC分类号： H02M3/335 ,  H02M1/00

CPC分类号： H02M3/33569 ,  H02M1/36 ,  Y02B70/1433

摘要： An embodiment of the invention provides a method of reducing surge current in an LLC converter. The LLC converter comprises a switching circuit having a first switch and a second switch, a resonant circuit, and a rectification circuit. During start up of the LLC converter, first and second signals having a fixed period and a variable duty cycle are applied to the first and second switches respectively. When a predetermined voltage on a load configured to be coupled to the rectification circuit is reached, the first and second signals are changed to signals having a variable period and a fixed duty cycle.

摘要翻译： 本发明的实施例提供了一种在LLC转换器中减少浪涌电流的方法。 LLC转换器包括具有第一开关和第二开关，谐振电路和整流电路的开关电路。 在LLC转换器启动期间，具有固定周期和可变占空比的第一和第二信号分别施加到第一和第二开关。 当达到配置为耦合到整流电路的负载上的预定电压达到时，第一和第二信号被改变为具有可变周期和固定占空比的信号。

公开(公告)号：US06998584B1

公开(公告)日：2006-02-14

申请号：US10933262

申请日：2004-09-03

申请人： Yuwei Luo

发明人： Yuwei Luo

IPC分类号： H05B1/02

CPC分类号： H05B1/0236 ,  Y10T307/461 ,  Y10T307/484

摘要： Methods and systems are provided for controlling the output power to DC electric heater elements to reduce the input current ripple and to fine-tune the output power to meet the fine-tuning percentage requirement. In one embodiment, a method is performed for controlling output power to heater elements in an electric heater system. The process includes receiving a power request by the heater system, providing output power controls for each heater element, and determining a particular output power control based on output power controls provided for each heater element and the power requested. Further, the heater system selectively controls the output power to one or more of the heater elements to meet the power request.

摘要翻译： 提供了用于控制直流电加热器元件的输出功率以减少输入电流纹波并微调输出功率以满足微调百分比要求的方法和系统。 在一个实施例中，执行用于控制电加热器系统中的加热器元件的输出功率的方法。 该过程包括接收加热器系统的功率请求，为每个加热器元件提供输出功率控制，以及基于为每个加热元件提供的输出功率控制和所请求的功率来确定特定的输出功率控制。 此外，加热器系统选择性地控制一个或多个加热器元件的输出功率以满足功率请求。

公开(公告)号：US08879279B2

公开(公告)日：2014-11-04

申请号：US13107423

申请日：2011-05-13

申请人： Yuwei Luo ,  Bosheng Sun

发明人： Yuwei Luo ,  Bosheng Sun

IPC分类号： H02M3/335 ,  H02M1/00

CPC分类号： H02M3/33507 ,  H02M3/33592 ,  H02M2001/0019 ,  H02M2001/0058 ,  Y02B70/1433 ,  Y02B70/1475 ,  Y02B70/1491

摘要： One embodiment relates to an LLC resonant power converter system. The system includes a transformer comprising a primary inductor and a secondary inductor and a switch control stage configured to generate a plurality of switching signals having a duty-cycle. The system also includes an input stage comprising the primary inductor and a plurality of switches that are controlled in response to the respective plurality of switching signals to generate a primary resonant current and an output stage comprising the secondary inductor and being configured to conduct an output current through a load based on a secondary resonant current to generate an output voltage. The system further includes a controller configured to limit a magnitude of the output current to a predetermined magnitude in response to variations of the load.

摘要翻译： 一个实施例涉及LLC谐振功率转换器系统。 该系统包括一个包括主电感器和次级电感器的变压器以及被配置为产生具有占空比的多个开关信号的开关控制级。 该系统还包括一个包括初级电感器和多个开关的输入级，多个开关被响应于相应的多个开关信号而被控制以产生初级谐振电流，而输出级包括次级电感器并被配置为传导输出电流 通过基于次级谐振电流的负载来产生输出电压。 该系统还包括控制器，其配置为响应于负载的变化将输出电流的大小限制到预定的大小。

公开(公告)号：US08820145B2

公开(公告)日：2014-09-02

申请号：US13164822

申请日：2011-06-21

申请人： Yuwei Luo ,  Yutian Wang ,  Zhenyu Yang ,  Shiwen Yu ,  Weijun Lv ,  Qingshun Wang ,  Weihan Ling ,  Zhenlun Li ,  Bin Han

发明人： Yuwei Luo ,  Yutian Wang ,  Zhenyu Yang ,  Shiwen Yu ,  Weijun Lv ,  Qingshun Wang ,  Weihan Ling ,  Zhenlun Li ,  Bin Han

IPC分类号： G01N11/14

CPC分类号： G01N11/14

摘要： This present invention relates to a measuring device for measuring consistency of cement slurry for a consistometer. The measuring device comprises a high-pressure vessel, a slurry cup and a magnetic driver, wherein the slurry cup is rotatably mounted inside the high-pressure vessel by the magnetic driver, stir blades are hanged in the slurry cup, and the magnetic driver is driven by a driving motor which is located outside the high-pressure vessel and is further provided with a tension sensor. The invention cancels the conventional mode for measuring consistency by a potentiometer, uses the tension sensor to measure the torque transferred from the driving motor to the magnetic driver, i.e. the cutting torque created by the stir blades on cement slurries within the slurry cup, thereby measuring the consistency of cement slurry.

摘要翻译： 本发明涉及一种用于测量稠度计的水泥浆稠度的测量装置。 测量装置包括高压容器，浆料杯和磁力驱动器，其中浆料杯由磁力驱动器可旋转地安装在高压容器内部，搅拌叶片悬挂在浆料杯中，并且磁性驱动器是 由位于高压容器外部的驱动电动机驱动，并且还设置有张力传感器。 本发明取消了通过电位计测量一致性的常规模式，使用张力传感器来测量从驱动电机传递到磁性驱动器的扭矩，即由浆料杯内的水泥浆上的搅拌叶片产生的切割扭矩，从而测量 水泥浆的稠度。

公开(公告)号：US20110211370A1

公开(公告)日：2011-09-01

申请号：US12715342

申请日：2010-03-01

申请人： Yuwei Luo ,  Bosheng Sun ,  Ian Lloyd Bower

发明人： Yuwei Luo ,  Bosheng Sun ,  Ian Lloyd Bower

IPC分类号： H02M3/335

CPC分类号： H02M3/33592 ,  Y02B70/1433 ,  Y02B70/1475

摘要： Systems and methods of resonant DC/DC conversion disclosed herein improve the basic resonant converter designs by proactively setting and coordinating the gate drive timings between the primary side and secondary side. By proactively setting and coordinating gate drives timings between the primary side and secondary side, both efficiency and transient performance optimizations may be achieved with or without diode emulation mode, depending on whether the switching frequency is below resonance or above resonance, and the nature of the load characteristics. If the switching frequency of the converter is determined to be at or below the resonance frequency, the output transistors may be configured to be fully active at or above a predetermined output load current. The turn-on timing of the output transistors is dependant on the load for a given output voltage, and is almost independent of input voltage. Turn-on timing may be significantly different at light load to no load.

摘要翻译： 本文公开的谐振DC / DC转换的系统和方法通过主动设置和协调初级侧和次级侧之间的栅极驱动定时来改善基本谐振转换器设计。 通过主动设置和协调初级侧和次级侧之间的栅极驱动时序，效率和瞬态性能优化可以通过或不使用二极管仿真模式来实现，这取决于开关频率是否低于谐振或高于谐振，并且 负载特性。 如果转换器的开关频率被确定为等于或低于谐振频率，则输出晶体管可以被配置为在预定的输出负载电流或高于预定的输出负载电流下完全有效。 输出晶体管的导通时间取决于给定输出电压的负载，并且几乎与输入电压无关。 轻负载时的开启时间可能会明显不同。

公开(公告)号：US20110164437A1

公开(公告)日：2011-07-07

申请号：US12683743

申请日：2010-01-07

申请人： Bosheng Sun ,  Yuwei Luo ,  Zhong Ye

发明人： Bosheng Sun ,  Yuwei Luo ,  Zhong Ye

IPC分类号： H02M3/335

CPC分类号： H02M3/33569 ,  H02M1/36 ,  Y02B70/1433

摘要： An embodiment of the invention provides a method of reducing surge current in an LLC converter. The LLC converter comprises a switching circuit having a first switch and a second switch, a resonant circuit, and a rectification circuit. During start up of the LLC converter, first and second signals having a fixed period and a variable duty cycle are applied to the first and second switches respectively. When a predetermined voltage on a load configured to be coupled to the rectification circuit is reached, the first and second signals are changed to signals having a variable period and a fixed duty cycle.

摘要翻译： 本发明的实施例提供了一种在LLC转换器中减少浪涌电流的方法。 LLC转换器包括具有第一开关和第二开关，谐振电路和整流电路的开关电路。 在LLC转换器启动期间，具有固定周期和可变占空比的第一和第二信号分别施加到第一和第二开关。 当达到配置为耦合到整流电路的负载上的预定电压达到时，第一和第二信号被改变为具有可变周期和固定占空比的信号。

公开(公告)号：US08217674B2

公开(公告)日：2012-07-10

申请号：US12702048

申请日：2010-02-08

申请人： Michael G. Amaro ,  Yuwei Luo ,  John M. Bonfitto ,  Michael J. Kane

发明人： Michael G. Amaro ,  Yuwei Luo ,  John M. Bonfitto ,  Michael J. Kane

IPC分类号： G01R31/00

CPC分类号： G01R31/024 ,  G01R31/2889

摘要： Open and short systems and methods for testing integrated circuits are disclosed. An example implementation includes engaging an integrated circuit testing module with an integrated circuit testing apparatus, the integrated circuit testing module for receiving an integrated circuit, a first set of contact points, and a second set of contact points; engaging a first probe onto at least one of the contact points of the first set of contact points, controllably engaging at least one of a second probe onto at least one contact pair of the integrated circuit testing module, and providing an electrical stimulus to the integrated circuit testing module.

摘要翻译： 公开了用于测试集成电路的开放和短路系统和方法。 示例实现包括使集成电路测试模块与集成电路测试装置接合，用于接收集成电路的集成电路测试模块，第一组接触点和第二组接触点; 将第一探针接合到第一组接触点的至少一个接触点上，可控制地将第二探针中的至少一个接合到集成电路测试模块的至少一个接触对上，并向集成电路 电路测试模块。

公开(公告)号：US20120024046A1

公开(公告)日：2012-02-02

申请号：US13164822

申请日：2011-06-21

申请人： Yuwei Luo ,  Yutian Wang ,  Zhenyu Yang ,  Shiwen Yu ,  Weijun Lv ,  Qingshun Wang ,  Weihan Ling ,  Zhenlun Li ,  Bin Han

发明人： Yuwei Luo ,  Yutian Wang ,  Zhenyu Yang ,  Shiwen Yu ,  Weijun Lv ,  Qingshun Wang ,  Weihan Ling ,  Zhenlun Li ,  Bin Han

IPC分类号： G01N11/14

CPC分类号： G01N11/14

摘要： This present invention relates to a measuring device for measuring consistency of cement slurry for a consistometer. The measuring device comprises a high-pressure vessel, a slurry cup and a magnetic driver, wherein the slurry cup is rotatably mounted inside the high-pressure vessel by the magnetic driver, stir blades are hanged in the slurry cup, and the magnetic driver is driven by a driving motor which is located outside the high-pressure vessel and is further provided with a tension sensor. The invention cancels the conventional mode for measuring consistency by a potentiometer, uses the tension sensor to measure the torque transferred from the driving motor to the magnetic driver, i.e. the cutting torque created by the stir blades on cement slurries within the slurry cup, thereby measuring the consistency of cement slurry.

摘要翻译： 本发明涉及一种用于测量稠度计的水泥浆稠度的测量装置。 测量装置包括高压容器，浆料杯和磁力驱动器，其中浆料杯由磁力驱动器可旋转地安装在高压容器内部，搅拌叶片悬挂在浆料杯中，并且磁性驱动器是 由位于高压容器外部的驱动电动机驱动，并且还设置有张力传感器。 本发明取消了通过电位计测量一致性的常规模式，使用张力传感器来测量从驱动电机传递到磁性驱动器的扭矩，即由浆料杯内的水泥浆上的搅拌叶片产生的切割扭矩，从而测量 水泥浆的稠度。

公开(公告)号：US20110193581A1

公开(公告)日：2011-08-11

申请号：US12702048

申请日：2010-02-08

申请人： Michael G. Amaro ,  Yuwei Luo ,  John M. Bonfitto ,  Michael J. Kane

发明人： Michael G. Amaro ,  Yuwei Luo ,  John M. Bonfitto ,  Michael J. Kane

IPC分类号： G01R31/26 ,  G01R31/20

CPC分类号： G01R31/024 ,  G01R31/2889

摘要： Open and short systems and methods for testing integrated circuits are disclosed. An example implementation includes engaging an integrated circuit testing module with an integrated circuit testing apparatus, the integrated circuit testing module for receiving an integrated circuit, a first set of contact points, and a second set of contact points; engaging a first probe onto at least one of the contact points of the first set of contact points, controllably engaging at least one of a second probe onto at least one contact pair of the integrated circuit testing module, and providing an electrical stimulus to the integrated circuit testing module.

摘要翻译： 公开了用于测试集成电路的开放和短路系统和方法。 示例实现包括使集成电路测试模块与集成电路测试装置接合，用于接收集成电路的集成电路测试模块，第一组接触点和第二组接触点; 将第一探针接合到第一组接触点的至少一个接触点上，可控制地将第二探针中的至少一个接合到集成电路测试模块的至少一个接触对上，并向集成电路 电路测试模块。

公开(公告)号：US20060049170A1

公开(公告)日：2006-03-09

申请号：US10933262

申请日：2004-09-03

申请人： Yuwei Luo

发明人： Yuwei Luo

IPC分类号： H05B1/02

CPC分类号： H05B1/0236 ,  Y10T307/461 ,  Y10T307/484

摘要： Methods and systems are provided for controlling the output power to DC electric heater elements to reduce the input current ripple and to fine-tune the output power to meet the fine-tuning percentage requirement. In one embodiment, a method is performed for controlling output power to heater elements in an electric heater system. The process includes receiving a power request by the heater system, providing output power controls for each heater element, and determining a particular output power control based on output power controls provided for each heater element and the power requested. Further, the heater system selectively controls the output power to one or more of the heater elements to meet the power request.

摘要翻译： 提供了用于控制直流电加热器元件的输出功率以减少输入电流纹波并微调输出功率以满足微调百分比要求的方法和系统。 在一个实施例中，执行用于控制电加热器系统中的加热器元件的输出功率的方法。 该过程包括接收加热器系统的功率请求，为每个加热器元件提供输出功率控制，以及基于为每个加热元件提供的输出功率控制和所请求的功率来确定特定的输出功率控制。 此外，加热器系统选择性地控制一个或多个加热器元件的输出功率以满足功率请求。