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31. 发明申请

US20070029982A1 Pre-charge method for isolated boost converter 有权
标题翻译：隔离升压转换器的预充电方法
公开(公告)号：US20070029982A1
公开(公告)日：2007-02-08
申请号：US11195855
申请日：2005-08-02
申请人： Keming Chen
发明人： Keming Chen
IPC分类号： H02M3/335 , G05F1/613
CPC分类号： H02M3/33569 , H02M1/36
摘要： A boost control module operates semiconductor switches of a boost converter circuit in an avalanche mode to precharge a boost output capacitor. The boost control module comprises a switching module that complementarily transitions a first semiconductor switch and a second semiconductor switch between ON and OFF states when a current does not exceed a maximum current threshold. The switching module transitions the first semiconductor switch and the second semiconductor switch to the OFF state when the current exceeds the maximum current threshold. The switching module maintains the first semiconductor switch and the second semiconductor switch in the OFF state until at least one of the inductor current is less than or equal to a minimum current threshold.
摘要翻译：升压控制模块以雪崩模式操作升压转换器电路的半导体开关，以对升压输出电容器进行预充电。升压控制模块包括开关模块，当电流不超过最大电流阈值时，该开关模块在第一半导体开关和第二半导体开关之间在接通和断开状态之间互相转换。当电流超过最大电流阈值时，开关模块将第一半导体开关和第二半导体开关转换到OFF状态。开关模块将第一半导体开关和第二半导体开关保持在OFF状态，直到电感器电流中的至少一个小于或等于最小电流阈值。

32. 发明授权

US5414613A Soft switching active snubber for semiconductor circuit operated in discontinuous conduction mode 失效
标题翻译：用于半导体电路的软开关有源缓冲器在不连续导通模式下工作
公开(公告)号：US5414613A
公开(公告)日：1995-05-09
申请号：US110100
申请日：1993-08-20
申请人： Keming Chen
发明人： Keming Chen
IPC分类号： H02M1/34 , H02M3/158 , H02M7/217 , H03K17/0814 , H02H7/125
CPC分类号： H02M1/34 , H02M1/4216 , H02M3/158 , H02M7/2173 , H03K17/08142 , H03K17/08148 , H02M2001/342 , Y02B70/126 , Y02B70/1491
摘要： A snubber network for a power conversion circuit operated in discontinuous conduction mode includes a snubber capacitor, an isolation diode and an active reset circuit. The snubber capacitor is connected to the output of the isolation diode, both of which are connected across a main switch of the power conversion circuit. The active reset circuit, connected between the input and output of the isolation diode as well as the input and output of a boost diode, is responsive to a reset signal for active resetting of the snubber capacitor within the normal boost cycle of the power conversion circuit. Upon receipt of the reset signal, energy held by the snubber capacitor is recovered by the reset circuit and subsequently transferred to the output of the power conversion circuit with turn-off of the main switch of the power conversion circuit. This occurs contemporaneous with the power conversion circuit's delivery of converted power to its output. With the snubber network, soft switching is provided for both the main switch and a snubber switch within the active reset circuit.
摘要翻译：用于以不连续导通模式操作的功率转换电路的缓冲器网络包括缓冲电容器，隔离二极管和有源复位电路。缓冲电容器连接到隔离二极管的输出，两者均连接在电源转换电路的主开关上。连接在隔离二极管的输入和输出以及升压二极管的输入和输出之间的有源复位电路响应于在功率转换电路的正常升压周期内缓冲电容器的有源复位的复位信号。在接收到复位信号时，由缓冲电容器保持的能量由复位电路恢复，随后通过电源转换电路的主开关的关断转移到功率转换电路的输出端。这与电力转换电路的转换功率输出到其输出同时发生。使用缓冲网络，主动开关和有源复位电路中的缓冲开关都提供软开关。

33. 发明申请

US20180116474A1 CERAMIC TOILET PAN WITH HANDRAILS 审中-公开
公开(公告)号：US20180116474A1
公开(公告)日：2018-05-03
申请号：US15582386
申请日：2017-04-28
申请人： Keming CHEN
发明人： Keming CHEN
IPC分类号： A47K17/02 , E03D11/13
CPC分类号： A47K17/026 , E03D11/13
摘要： The present invention relates to a ceramic toilet pan with handrails, comprising a ceramic toilet pan body and a water tank. Handrails are respectively arranged on both sides of the ceramic toilet pan body and the water tank, and the handrails, the ceramic toilet pan body and the water tank are formed integrally to form an integral structure. The present invention has the advantages of simple structure, novel and beautiful appearance, low cost, convenient cleaning, no need of other supporting facilities, no need of additional installation and small occupation area, the ceramic toilet pan with handrails is suitable for installation and use in bathrooms of families, public places and the like, and satisfies the need of going to the toilet for people having difficulty in moving, such as the old, the weak, the sick, the disabled and the pregnant.

34. 发明授权

US09360547B2 Extensible object location system and method using multiple references 有权
标题翻译：可扩展对象定位系统和使用多个引用的方法
公开(公告)号：US09360547B2
公开(公告)日：2016-06-07
申请号：US13436029
申请日：2012-03-30
申请人： Aitan Ameti , Keming Chen , Robert J. Fontana , Edward A. Richley , Belinda Turner
发明人： Aitan Ameti , Keming Chen , Robert J. Fontana , Edward A. Richley , Belinda Turner
IPC分类号： G01S5/02 , G01S5/06 , G01S5/10
CPC分类号： G01S5/06 , G01S5/021 , G01S5/0221 , G01S5/10
摘要： An ultra wideband (UWB) or short-pulse RF system is disclosed that can be used to precisely locate or track objects (such as personnel, equipment, assets, etc.) in real-time in an arbitrarily large, physically connected or disconnected, multipath and/or noisy environment. A system implementation includes multiple zones or groups of receivers that receives RF signals transmitted by one or more timing reference tags and one or more objects having associated object tags. Each zone or group may share a common receiver. By combining a multiple reference tag system with a virtual group of receivers, i.e., a zoning technique or system, a cost-effective system can be provided that offers scalability and flexibility to monitor a significantly expanded coverage area.
摘要翻译：公开了一种超宽带（UWB）或短脉冲RF系统，其可用于在任意大的物理连接或断开的情况下实时地精确定位或跟踪物体（例如人员，设备，资产等）多路径和/或噪声环境。系统实现包括接收器的多个区域或组，其接收由一个或多个定时参考标签和具有相关联的对象标签的一个或多个对象发送的RF信号。每个区域或组可以共享公共接收器。通过将多个参考标签系统与虚拟接收机组即分区技术或系统组合，可以提供具有成本效益的系统，其提供可扩展性和灵活性来监视显着扩展的覆盖区域。

35. 发明申请

US20130128634A1 COMPOSITE AC TO DC CONVERTER WITH BOOSTING CAPABILITIES 审中-公开
标题翻译：具有升压能力的复合交直流转换器
公开(公告)号：US20130128634A1
公开(公告)日：2013-05-23
申请号：US13300482
申请日：2011-11-18
申请人： EVGENI GANEV , WILLIAM WARR , KEMING CHEN
发明人： EVGENI GANEV , WILLIAM WARR , KEMING CHEN
IPC分类号： H02M7/06 , H02M1/12
CPC分类号： H02M7/068 , H01F30/02 , H01F30/14 , H02M1/12 , H02M1/14 , H02M7/08
摘要： A composite-like AC-to-DC converter has boosting capabilities. The term “composite AC-to-DC converter” has been coined to distinguish a converter using two or more conversion methods in parallel. All the autotransformer designs for the boost topology composite-like system begin with vector diagrams constructed using the tips of the line-to-line voltage vectors. A constructor arc is swung between these tips equal to the length of the line-to-line voltage vector span. The number of autotransformer three-phase outputs is then determined by the number of equally spaced rays drawn from the opposite vector tip to the arc. The intersection of points of these rays with the arc are used to design the composite-like autotransformer's winding's voltage ratios and interconnections.
摘要翻译：复合式AC-DC转换器具有增强能力。术语“复合AC-DC转换器”已被设计为使用两个或多个并行转换方法来区分转换器。用于升压拓扑复合系统的所有自耦变压器设计都是以使用线间电压矢量提示构建的矢量图开始的。这些尖端之间的构造电弧摆动等于线间电压矢量跨度的长度。自耦变压器三相输出的数量然后由从相对向量尖端到弧线的等间距射线的数量确定。这些光线与电弧的点用于设计复合式自耦变压器绕组的电压比和互连。

36. 发明申请

US20120086607A1 WIRELESS TIME REFERENCE SYSTEM AND METHOD 有权
标题翻译：无线时间参考系统和方法
公开(公告)号：US20120086607A1
公开(公告)日：2012-04-12
申请号：US13270061
申请日：2011-10-10
申请人： Aitan Ameti , Keming Chen , Robert J. Fontana , Edward A. Richley , Belinda Turner
发明人： Aitan Ameti , Keming Chen , Robert J. Fontana , Edward A. Richley , Belinda Turner
IPC分类号： G01S5/02
CPC分类号： G01S5/021 , G01S5/0009 , G01S5/14
摘要： Various methods and apparatuses that utilize a wireless time reference system are provided herein. One example method involves calibrating independent, spatially-located clocks of a geoposition system in order to geolocate an object having an associated object tag. The example method may include transmitting an RF pulse pair, receiving the pulse pair at multiple locations, utilizing respective frequencies of first and second spatially-located clocks to produce count values to effect measurement of an interarrival interval at each of multiple locations, determining a ratio of count values relative to said first and second spatially-located clocks, and utilizing said ratio to calibrate time indications of said clocks. Other related methods and apparatus are also provided.
摘要翻译：本文提供了利用无线时间基准系统的各种方法和装置。一个示例性方法包括校准地理位置系统的独立的，位于空间上的时钟，以便对具有相关联的对象标签的对象进行地理定位。示例性方法可以包括发射RF脉冲对，利用第一和第二空间位置时钟的相应频率在多个位置处接收脉冲对，以产生计数值，以在多个位置的每个位置处测量间隔间隔，确定比率相对于所述第一和第二空间位置的时钟的计数值，并且利用所述比率来校准所述时钟的时间指示。还提供了其他相关方法和装置。

37. 发明申请

US20100078997A1 AUTOMOTIVE ELECTRICAL SYSTEM FOR COUPLING POWER CONVERTERS WITH A TRANSFORMER 有权
标题翻译：用于与变压器连接电力变换器的汽车电气系统
公开(公告)号：US20100078997A1
公开(公告)日：2010-04-01
申请号：US12241398
申请日：2008-09-30
申请人： KEMING CHEN , CHRISTOPHER P. HENZE , GEORGE R. WOODY
发明人： KEMING CHEN , CHRISTOPHER P. HENZE , GEORGE R. WOODY
IPC分类号： H02M3/335
CPC分类号： B60L1/00 , B60L2210/14 , Y02T10/7225 , Y10T307/406
摘要： Systems and/or apparatus are provided for automotive electrical systems having power converters that are coupled by using a transformer. An electrical system comprises a boost converter, wherein a first winding of a transformer is coupled between the input node of the boost converter and a first reference node. The boost converter further includes a switch coupled between the first reference node and a second reference node and a diode coupled between the first reference node and the output node of the boost converter. An energy source is coupled between the input node and the second reference node and a first electrical load is coupled between the output node and the second reference node. The electrical system further comprises a voltage converter having an input coupled to a second winding of the transformer, and a second electrical load coupled to the output of the voltage converter.
摘要翻译：为具有通过使用变压器耦合的功率转换器的汽车电气系统提供系统和/或设备。电气系统包括升压转换器，其中变压器的第一绕组耦合在升压转换器的输入节点和第一参考节点之间。升压转换器还包括耦合在第一参考节点和第二参考节点之间的开关以及耦合在升压转换器的第一参考节点和输出节点之间的二极管。能量源耦合在输入节点和第二参考节点之间，并且第一电负载耦合在输出节点和第二参考节点之间。电气系统还包括电压转换器，其具有耦合到变压器的第二绕组的输入端和耦合到电压转换器的输出的第二电负载。

38. 发明授权

US07643321B2 Bi-directional current sensing circuit 有权
标题翻译：双向电流检测电路
公开(公告)号：US07643321B2
公开(公告)日：2010-01-05
申请号：US11236858
申请日：2005-09-27
申请人： Keming Chen
发明人： Keming Chen
IPC分类号： H02M3/24 , H02M7/44 , H02M5/42
CPC分类号： H02M7/797 , H02M2001/0009
摘要： A current sensing circuit that determines an output current of a bi-directional converter circuit comprises a current transformer that receives a first current signal and that outputs a second current signal. The first current signal is indicative of the output current and flows in one of a first direction and/or a second direction. The second current signal is indicative of the first current signal. A current sensing module receives the second current signal and has a first state and a second state. A converter control module simultaneously transitions the first current signal from the first direction to the second direction and transitions the current sensing module from the first state to the second state. The converter control module transitions the current sensing module to the first state after a resetting period.
摘要翻译：确定双向转换器电路的输出电流的电流感测电路包括接收第一电流信号并输出第二电流信号的电流互感器。第一电流信号指示输出电流并且在第一方向和/或第二方向之一中流动。第二电流信号表示第一电流信号。电流感测模块接收第二电流信号并具有第一状态和第二状态。 A转换器控制模块同时将第一电流信号从第一方向转换到第二方向，并且将电流感测模块从第一状态转变到第二状态。转换器控制模块在复位周期之后将电流感测模块转换到第一状态。

39. 发明申请

US20090154205A1 SNUBBER CAPACITOR RESETTING IN A DC-TO-DC CONVERTER 有权
标题翻译：直流到直流转换器中的SNUBBER电容器复位
公开(公告)号：US20090154205A1
公开(公告)日：2009-06-18
申请号：US11959003
申请日：2007-12-18
申请人： KEMING CHEN
发明人： KEMING CHEN
IPC分类号： H02H7/125
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。

40. 发明授权

US07393236B2 Integrated thermal and electrical connection system for power devices 有权
标题翻译：电力设备集成热电连接系统
公开(公告)号：US07393236B2
公开(公告)日：2008-07-01
申请号：US11219228
申请日：2005-09-02
申请人： Alex Thompson , Mark D. Korich , Mark L Selogie , Keming Chen
发明人： Alex Thompson , Mark D. Korich , Mark L Selogie , Keming Chen
IPC分类号： H01R13/00
CPC分类号： H05K7/209 , H01L23/4093 , H01L2924/0002 , H01L2924/00
摘要： An electrical system as described herein is suitable for use in an electric or hybrid vehicle. The electrical system includes electrical devices, such as power transistors, coupled to an electrically and thermally conductive bus bar. The respective nodes of the electrical devices are coupled to the bus bar such that the bus bar carries a combined signal generated by the electrical devices. The bus bar is also thermally coupled to a conduction heat transfer system, such as a liquid cooled cold plate. Thus, the bus bar functions as both an electrical conduit and a conduction-based heat sink for the electrical system.
摘要翻译：如本文所述的电气系统适用于电动或混合动力车辆。电气系统包括耦合到电和导热母线的电气设备，例如功率晶体管。电气设备的相应节点耦合到母线，使得汇流条承载由电气设备产生的组合信号。母线还与传导传热系统（例如液体冷却冷板）热耦合。因此，汇流条作为电气系统的电导管和导电型散热器都起作用。

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