公开(公告)号：US20100102638A1

公开(公告)日：2010-04-29

申请号：US12256808

申请日：2008-10-23

Applicant: KEMING CHEN ,  CHRISTOPHER P. HENZE ,  STEPHEN RAISER ,  GEORGE R. WOODY

Inventor： KEMING CHEN ,  CHRISTOPHER P. HENZE ,  STEPHEN RAISER ,  GEORGE R. WOODY

IPC: H01H79/00

CPC classification number: B60L3/0046 ,  B60L3/04 ,  Y10T307/76

Abstract: Systems and methods are provided for discharging a high-voltage bus using semiconductor devices. A discharge system for a first voltage rail and a second voltage rail comprises a first semiconductor device coupled to a first voltage rail and a second semiconductor device coupled between the first semiconductor device and a second voltage rail. A control circuit is coupled to the first semiconductor device and the second semiconductor device. In response to a discharge condition, the control circuit is configured to activate the first semiconductor device and gradually activate the second semiconductor device, such that the energy potential between the first voltage rail and the second voltage rail is gradually dissipated through the semiconductor devices.

Abstract translation: 提供了使用半导体器件对高压总线进行放电的系统和方法。 用于第一电压轨和第二电压轨的放电系统包括耦合到第一电压轨的第一半导体器件和耦合在第一半导体器件与第二电压轨之间的第二半导体器件。 控制电路耦合到第一半导体器件和第二半导体器件。 响应于放电条件，控制电路被配置为激活第一半导体器件并逐渐激活第二半导体器件，使得第一电压轨和第二电压轨之间的能量电势通过半导体器件逐渐消散。

公开(公告)号：US20100102635A1

公开(公告)日：2010-04-29

申请号：US12256758

申请日：2008-10-23

Applicant: KEMING CHEN ,  STEPHEN RAISER ,  GEORGE R. WOODY

Inventor： KEMING CHEN ,  STEPHEN RAISER ,  GEORGE R. WOODY

IPC: H02J1/00

CPC classification number: 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

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US20130170257A1

公开(公告)日：2013-07-04

申请号：US13342845

申请日：2012-01-03

Applicant: EVGENI GANEV ,  WILLIAM WARR ,  KEMING CHEN

Inventor： EVGENI GANEV ,  WILLIAM WARR ,  KEMING CHEN

IPC: H02M1/12 ,  H02M7/06

CPC classification number: H01F30/02 ,  H01F30/12 ,  H02M5/14

Abstract: A composite power conversion method using a WYE asymmetrical autotransformer that converts electrical power from AC to DC uses two or more conversion methods in parallel and provides a passive technique that “splits” the input 3-phase voltages into additional phases, so that the number of DC rectification pulses is increased to improve AC line current THD The WYE asymmetric autotransformer topology provides a potential improvement in size/weight and efficiency compared to former asymmetric autotransformers.

Abstract translation: 使用将电力从AC转换为DC的WYE不对称自耦变压器的复合功率转换方法并联使用两个或更多个转换方法，并提供将输入的三相电压“分为”到另外的相位的无源技术， 增加直流整流脉冲以改善交流线路电流THD与以前的非对称自耦变压器相比，WYE不对称自耦变压器拓扑结构提供了大小/重量和效率的潜在改进。

公开(公告)号：US20080284387A1

公开(公告)日：2008-11-20

申请号：US11748106

申请日：2007-05-14

Applicant: KEMING CHEN ,  Steven E. Schulz

Inventor： KEMING CHEN ,  Steven E. Schulz

IPC: G05F1/00

CPC classification number: H02M1/32 ,  H02M3/33576 ,  H02M3/3378

Abstract: 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.

Abstract translation: 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S 2和S 4在升压模式下关闭，只有S 1和S 3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断时，C 1和C 2提供由隔离变压器的漏感引起的过冲保护，并在用于电压调节的反向能量流期间提供反向能量流的存储能量 升压模式。 在降压模式下，C 1和C 2为降压模式主开关晶体管S 2和S 4提供软开关。

公开(公告)号：US20090161389A1

公开(公告)日：2009-06-25

申请号：US11960253

申请日：2007-12-19

Applicant: KEMING CHEN ,  DOUGLAS S. CARLSON ,  SUNG CHUNG

Inventor： KEMING CHEN ,  DOUGLAS S. CARLSON ,  SUNG CHUNG

IPC: H02M3/315

CPC classification number: H02M1/36 ,  H02M3/33569 ,  H02M2001/0022

Abstract: A method and apparatus for precharging a DC to DC power converter system is provided. The system includes a boost circuit for generating a boosted output voltage from an input voltage. The input voltage is monitored. A predetermined current limit is compared to a current in the boost circuit, and the current limited is increased when the input voltage is greater than a predetermined value.

Abstract translation: 提供一种用于对DC-DC功率转换器系统进行预充电的方法和装置。 该系统包括用于从输入电压产生升压的输出电压的升压电路。 监控输入电压。 将预定电流限制与升压电路中的电流进行比较，并且当输入电压大于预定值时，限制电流增加。

公开(公告)号：US20090153284A1

公开(公告)日：2009-06-18

申请号：US11958154

申请日：2007-12-17

Applicant: KEMING CHEN

Inventor： KEMING CHEN

IPC: H01F27/28

CPC classification number: B60K6/40 ,  B60K6/32 ,  H02M3/00 ,  Y02T90/34

Abstract: A vehicular power converter includes switches and first and second inductive components. The first and second inductive components have substantially adjacent portions and are coupled to the plurality of switches such that when current flows from the plurality of switches and through the first and second inductive components, flux generated by the current flowing through the adjacent portions of the first and second inductive components and located between the adjacent portions is oriented in substantially opposite directions.

Abstract translation: 车载功率转换器包括开关和第一和第二电感元件。 第一和第二电感元件具有基本上相邻的部分并且耦合到多个开关，使得当电流从多个开关流过并且通过第一和第二电感元件时，由流过第一和第二电感元件的相邻部分的电流产生的磁通 并且位于相邻部分之间的第二感应部件被定向成基本相反的方向。

公开(公告)号：US20130128634A1

公开(公告)日：2013-05-23

申请号：US13300482

申请日：2011-11-18

Applicant: EVGENI GANEV ,  WILLIAM WARR ,  KEMING CHEN

Inventor： EVGENI GANEV ,  WILLIAM WARR ,  KEMING CHEN

IPC: H02M7/06 ,  H02M1/12

CPC classification number: H02M7/068 ,  H01F30/02 ,  H01F30/14 ,  H02M1/12 ,  H02M1/14 ,  H02M7/08

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US20100078997A1

公开(公告)日：2010-04-01

申请号：US12241398

申请日：2008-09-30

Applicant: KEMING CHEN ,  CHRISTOPHER P. HENZE ,  GEORGE R. WOODY

Inventor： KEMING CHEN ,  CHRISTOPHER P. HENZE ,  GEORGE R. WOODY

IPC: H02M3/335

CPC classification number: B60L1/00 ,  B60L2210/14 ,  Y02T10/7225 ,  Y10T307/406

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US20090154205A1

公开(公告)日：2009-06-18

申请号：US11959003

申请日：2007-12-18

Applicant: KEMING CHEN

Inventor： KEMING CHEN

IPC: H02H7/125

CPC classification number: H02M3/33576 ,  H02M2001/0032 ,  H02M2001/342 ,  Y02B70/1491 ,  Y02B70/16

Abstract: 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.

Abstract translation: 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。