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1. 发明申请

US20150367049A1 IMPLANTABLE BLOOD PUMP WITH INTEGRATED CONTROLLER 有权
标题翻译：具有集成控制器的可植入血液泵
公开(公告)号：US20150367049A1
公开(公告)日：2015-12-24
申请号：US14308177
申请日：2014-06-18
申请人： Keming Chen , Chen Chen , Frank Lin
发明人： Keming Chen , Chen Chen , Frank Lin
IPC分类号： A61M1/12 , A61M1/10
CPC分类号： A61M1/122 , A61M1/101 , A61M1/1015 , A61M1/1031 , A61M1/1086 , A61M1/127
摘要： An implantable blood pump includes motor control circuitry and power electronics circuitry integrated within the implantable pump body. The motor control circuitry and power electronics circuitry is configured to energize and control motor windings to rotate the pump rotor and impeller. Additional control circuitry and power electronics circuitry may be integrated within the pump housing to energize and control magnetic bearings of a magnetic levitation pump. A percutaneous cable coupled between the implantable blood pump and an extracorporeal monitor includes a reduced number of leads to provide power and control signals to the implantable blood pump. Wireless communication between the extracorporeal monitor and the integrated power electronics and control circuitry facilitates the use of a percutaneous cable with as few as two leads for providing power to the implantable pump.
摘要翻译：可植入血液泵包括集成在可植入泵体内的马达控制电路和电力电子电路。电动机控制电路和电力电子电路被配置为激励和控制电动机绕组以使泵转子和叶轮旋转。附加的控制电路和电力电子电路可以集成在泵壳体内以激励和控制磁悬浮泵的磁轴承。耦合在可植入血液泵和体外监测器之间的经皮电缆包括减少数量的引线以向可植入血液泵提供功率和控制信号。体外监测器和集成电力电子和控制电路之间的无线通信有助于使用具有少至两个引线的经皮电缆，以向可植入泵提供电力。

2. 发明授权

US07768807B2 Bidirectional no load control with overshoot protection 有权
标题翻译：具有过冲保护功能的双向无负载控制
公开(公告)号：US07768807B2
公开(公告)日：2010-08-03
申请号：US11748106
申请日：2007-05-14
申请人： Keming Chen , Steven E. Schulz
发明人： Keming Chen , Steven E. Schulz
IPC分类号： H02M7/217
CPC分类号： H02M1/32 , H02M3/33576 , H02M3/3378
摘要： A method of operating an isolated bi-directional dc/dc converter to provide voltage regulation at a no-load condition over a wide voltage range and also provide overshoot protection for the boost mode main switching transistors uses new boost mode drive waveforms. The new waveforms drive switches S2 and S4 to be turned off during boost mode and only S1 and S3 are switched to provide reverse energy flow at no-load. In boost mode, C1 and C2 provide overshoot protection caused by leakage inductance of the isolation transformer when boost mode drive transistors turn off during forward energy flow and provide stored energy for reverse energy flow during reverse energy flow periods used for voltage regulation in the boost mode. In buck mode, C1 and C2 provide soft switching for buck mode main switching transistors S2 and S4.
摘要翻译：一种隔离双向dc / dc转换器的运行方式，可在宽电压范围内的无负载状态下提供电压调节，并为升压模式主开关晶体管提供过冲保护，采用新的升压模式驱动波形。新的波形驱动开关S2和S4在升压模式下关闭，只有S1和S3被切换以在空载时提供反向能量流。在升压模式下，当升压模式驱动晶体管在正向能量流动期间关闭时，C1和C2提供由隔离变压器的漏感引起的过冲保护，并在用于升压模式下的电压调节的反向能量流期间提供反向能量流的存储能量。在降压模式下，C1和C2为降压模式主开关晶体管S2和S4提供软开关。

3. 发明申请

US20100102635A1 ELECTRICAL SYSTEM AND AUTOMOTIVE DRIVE SYSTEM HAVING AN ON-DEMAND BOOST CONVERTER, AND RELATED OPERATING METHODS 有权
标题翻译：具有需求升压转换器的电气系统和汽车驱动系统及相关操作方法
公开(公告)号：US20100102635A1
公开(公告)日：2010-04-29
申请号：US12256758
申请日：2008-10-23
申请人： KEMING CHEN , STEPHEN RAISER , GEORGE R. WOODY
发明人： KEMING CHEN , STEPHEN RAISER , GEORGE R. WOODY
IPC分类号： H02J1/00
CPC分类号： H02J7/1438 , B60L11/1811 , B60L11/1887 , B60L2210/14 , H02J7/1423 , H02J7/345 , H02J2001/004 , Y02T10/7005 , Y02T10/7072 , Y02T10/7225 , Y02T10/92 , Y02T90/127 , Y02T90/14 , Y02T90/34 , Y10T307/675
摘要： Systems and methods are provided for an on-demand boost converter for use in a vehicle. An automotive drive system comprises a boost converter having an input node, a first output node associated with a first boost leg, and a second output node associated with a second boost leg. A fuel cell is coupled to the input node of the boost converter and a battery is coupled to the first output node. An inverter module is coupled to the second output node, and a vehicle traction drive unit is coupled the inverter module. A first switch is coupled between the second output node and the first output node, wherein the battery provides energy to the second output node when the first switch is closed.
摘要翻译：为用于车辆的按需升压转换器提供系统和方法。汽车驱动系统包括升压转换器，其具有输入节点，与第一升压支路相关联的第一输出节点和与第二升压支路相关联的第二输出节点。燃料电池耦合到升压转换器的输入节点，并且电池耦合到第一输出节点。逆变器模块耦合到第二输出节点，并且车辆牵引驱动单元联接到逆变器模块。第一开关耦合在第二输出节点和第一输出节点之间，其中当第一开关闭合时，电池向第二输出节点提供能量。

4. 发明授权

US07705576B2 High-win circuit for multi-phase current mode control 有权
标题翻译：用于多相电流模式控制的高效电路
公开(公告)号：US07705576B2
公开(公告)日：2010-04-27
申请号：US11263220
申请日：2005-10-31
申请人： Keming Chen
发明人： Keming Chen
IPC分类号： G05F1/00
CPC分类号： H02M3/1584
摘要： A current mode control circuit uses a current comparing module to control a switching signal according to one of a plurality of current feedback signals. The current mode circuit comprises a voltage control module that generates an output voltage according to an input voltage and the switching control signal, and that generates the plurality of current feedback signals. The current comparing module outputs a control current signal that is indicative of a greater one of the plurality of current feedback signals. A current mode control module receives the control current signal and generates the switching control signal according to the control current signal.
摘要翻译：电流模式控制电路使用电流比较模块根据多个电流反馈信号之一来控制开关信号。电流模式电路包括电压控制模块，其根据输入电压和开关控制信号产生输出电压，并且产生多个电流反馈信号。电流比较模块输出指示多个电流反馈信号中较大一个的控制电流信号。电流模式控制模块接收控制电流信号并根据控制电流信号产生开关控制信号。

5. 发明申请

US20100001824A1 Autotransformer using printed wireboard 有权
公开(公告)号：US20100001824A1
公开(公告)日：2010-01-07
申请号：US12217424
申请日：2008-07-05
申请人： Keming Chen , Mike Kirkland , Michael A. Quan
发明人： Keming Chen , Mike Kirkland , Michael A. Quan
IPC分类号： H01F5/00
CPC分类号： H01F30/02 , H01F27/22 , H01F27/2804
摘要： An autotransformer for use in low frequency, high power applications that uses a stack of printed wire boards constructed of a top, inner, and bottom layer including electrical trace windings circumventing the transformer core and formed in the inner layer for direct thermal contact with a heat sink interface providing a uniform and consistent heat path down to the heat sink plate. The autotransformer further includes a board to board connection employing solder cups to electrically connect between predetermined printed wire board traces. The printed wire board autotransformer also may use a non-planar interface for thermal interface with a non-planar heat sink plate surface.

6. 发明授权

US07586760B2 Snubber capacitor resetting in a DC-to-DC converter 有权
标题翻译：缓冲电容在DC-DC转换器中复位
公开(公告)号：US07586760B2
公开(公告)日：2009-09-08
申请号：US11959003
申请日：2007-12-18
申请人： Keming Chen
发明人： Keming Chen
IPC分类号： H02M3/335 , H02H7/122
CPC分类号： H02M3/33576 , H02M2001/0032 , H02M2001/342 , Y02B70/1491 , Y02B70/16
摘要： A DC-to-DC converter and associated methods are provided for controlling the discharge of snubber capacitances during a light/no load buck mode of operation. An operating method for a DC-to-DC converter detects conditions corresponding to a light/no load buck mode of operation, and, in response to the detection of that mode, controls the states of a first switch, a second switch, a first switched diode element, a second switched diode element, a third switched diode element, and a fourth switched diode element to facilitate discharging of a first capacitance element and a second capacitance element through a secondary winding of a transformer.
摘要翻译：提供DC-DC转换器和相关联的方法用于在轻/无负载降压操作模式期间控制缓冲电容的放电。用于DC-DC转换器的操作方法检测与轻/无负载降压操作模式相对应的条件，并且响应于该模式的检测，控制第一开关，第二开关，第一开关二极管元件，第二开关二极管元件，第三开关二极管元件和第四开关二极管元件，以便于通过变压器的次级绕组放电第一电容元件和第二电容元件。

7. 发明申请

US20070096705A1 High-win circuit for multi-phase current mode control 有权
标题翻译：用于多相电流模式控制的高效电路
公开(公告)号：US20070096705A1
公开(公告)日：2007-05-03
申请号：US11263220
申请日：2005-10-31
申请人： Keming Chen
发明人： Keming Chen
IPC分类号： G05F1/00
CPC分类号： H02M3/1584
摘要： A current mode control circuit uses a current comparing module to control a switching signal according to one of a plurality of current feedback signals. The current mode circuit comprises a voltage control module that generates an output voltage according to an input voltage and the switching control signal, and that generates the plurality of current feedback signals. The current comparing module outputs a control current signal that is indicative of a greater one of the plurality of current feedback signals. A current mode control module receives the control current signal and generates the switching control signal according to the control current signal.
摘要翻译：电流模式控制电路使用电流比较模块根据多个电流反馈信号之一来控制开关信号。电流模式电路包括电压控制模块，其根据输入电压和开关控制信号产生输出电压，并且产生多个电流反馈信号。电流比较模块输出指示多个电流反馈信号中较大一个的控制电流信号。电流模式控制模块接收控制电流信号并根据控制电流信号产生开关控制信号。

8. 发明申请

US20060002156A1 DC converter circuit with overshoot protection 失效
公开(公告)号：US20060002156A1
公开(公告)日：2006-01-05
申请号：US10881213
申请日：2004-06-30
申请人： Keming Chen , Lateef Kajouke , James Lazar
发明人： Keming Chen , Lateef Kajouke , James Lazar
IPC分类号： H02M3/335
CPC分类号： H02M3/28 , H02M3/33569
摘要： A DC-DC converter comprises an input circuit that stores inductive energy that includes a first switch that releases the stored inductive energy. A transformer includes a primary winding that communicates with the input circuit and a secondary winding. An output circuit communicates with the secondary winding and that includes first and second output conductors and a first diode that communicates with one end of the secondary winding and the first output conductor. A second diode communicates with one end of the secondary winding and the second output conductor. A third diode communicates with an opposite end of the secondary winding and the first output conductor. A fourth diode communicates with an opposite end of the secondary winding and the second output conductor. A first capacitor is connected in parallel to the third diode. A second capacitor is connected in parallel to the fourth diode.

9. 发明授权

US5235501A High efficiency voltage converter 失效
标题翻译：高效率电压转换器
公开(公告)号：US5235501A
公开(公告)日：1993-08-10
申请号：US733168
申请日：1991-07-19
申请人： Thomas A. Stuart , Keming Chen
发明人： Thomas A. Stuart , Keming Chen
IPC分类号： H02M3/337 , H03K17/00 , H03K17/0814
CPC分类号： H02M3/3376 , H03K17/08146 , H03K17/08148 , H03K2217/0036
摘要： A full bridge DC to DC converter which provides zero voltage switching (ZVS) for one leg of the bridge and zero current switching (ZCS) for the other leg of the bridge is described. ZVS is achieved with parallel capacitors, while ZCS is achieved by using the reverse breakdown characteristics of the various diode and switching devices. This technique provides a significant reduction in the switching losses of the switching devices, which allows for higher power and frequency combinations.
摘要翻译：描述了为桥的一条支路提供零电压开关（ZVS）和桥的另一端的零电流开关（ZCS）的全桥DC到DC转换器。 ZVS采用并联电容实现，而ZCS通过使用各种二极管和开关器件的反向击穿特性来实现。该技术显着降低了开关器件的开关损耗，这允许更高的功率和频率组合。

10. 发明授权

US09308305B2 Implantable blood pump with integrated controller 有权
标题翻译：带集成控制器的植入式血液泵
公开(公告)号：US09308305B2
公开(公告)日：2016-04-12
申请号：US14308177
申请日：2014-06-18
申请人： Keming Chen , Chen Chen , Frank Lin
发明人： Keming Chen , Chen Chen , Frank Lin
IPC分类号： A61N1/362 , A61M1/12 , A61M1/10
CPC分类号： A61M1/122 , A61M1/101 , A61M1/1015 , A61M1/1031 , A61M1/1086 , A61M1/127
摘要： An implantable blood pump includes motor control circuitry and power electronics circuitry integrated within the implantable pump body. The motor control circuitry and power electronics circuitry is configured to energize and control motor windings to rotate the pump rotor and impeller. Additional control circuitry and power electronics circuitry may be integrated within the pump housing to energize and control magnetic bearings of a magnetic levitation pump. A percutaneous cable coupled between the implantable blood pump and an extracorporeal monitor includes a reduced number of leads to provide power and control signals to the implantable blood pump. Wireless communication between the extracorporeal monitor and the integrated power electronics and control circuitry facilitates the use of a percutaneous cable with as few as two leads for providing power to the implantable pump.
摘要翻译：可植入血液泵包括集成在可植入泵体内的马达控制电路和电力电子电路。电动机控制电路和电力电子电路被配置为激励和控制电动机绕组以使泵转子和叶轮旋转。附加的控制电路和电力电子电路可以集成在泵壳体内以激励和控制磁悬浮泵的磁轴承。耦合在可植入血液泵和体外监测器之间的经皮电缆包括减少数量的引线以向可植入血液泵提供功率和控制信号。体外监测器和集成电力电子和控制电路之间的无线通信有助于使用具有少至两个引线的经皮电缆，以向可植入泵提供电力。

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