Gate driver power supply
    21.
    发明授权

    公开(公告)号:US10523185B1

    公开(公告)日:2019-12-31

    申请号:US16042541

    申请日:2018-07-23

    Inventor: Paul Carvell

    Abstract: A power supply for a gate driver circuit is provided. The power supply is configured to supply a logic voltage, a positive voltage and a negative voltage to the gate driver circuit such that a gated semiconductor driven by the gate driver circuit does not inadvertently turn on. The gate driver power supply is configured such that the logic voltage becomes a steady-state voltage prior to the positive voltage becoming a steady-state voltage and remains above a first voltage value until the positive voltage is less than a second voltage value.

    AC driven LED light with digital control of color and intensity

    公开(公告)号:US09699841B2

    公开(公告)日:2017-07-04

    申请号:US14912461

    申请日:2015-04-09

    Inventor: Felix O. Heimes

    Abstract: A full color LED light for aircraft interiors is described, comprising a housing containing at least three differently colored groups of light emitting diodes, a controller for the groups of light emitting diodes and an alternating current power source. The controller distributes the alternating current to LED groups, providing a desired intensity of each differently colored group, producing a desired blended output color. At least one switching circuit receives input current from the power source, via the controller, and directs current to LED subgroups such that a near optimal voltage drop is maintained, given the varied voltage drops of the LED subgroups, regardless of the input voltage, in light of the voltage rating of the LEDs. Embodiments provide for measurement or estimation of current profiles, thermal profiles, and series resistance, allowing accurate measurement of lumen depreciation over time. Additional embodiments include a feedback circuit to temper input power fluctuations.

    Internal line replaceable unit high intensity radiated field detector
    25.
    发明授权
    Internal line replaceable unit high intensity radiated field detector 有权
    内部可更换单元高强度辐射场检测器

    公开(公告)号:US09459300B2

    公开(公告)日:2016-10-04

    申请号:US14627891

    申请日:2015-02-20

    CPC classification number: G01R29/0835 G01R29/0864 G01R31/001 G01R31/04

    Abstract: Various embodiments for detecting a high Intensity radiated field (HIRF) in a line replaceable unit are provided. For example, an internal detector includes at least one antenna attached to a chassis. The at least one antenna is configured and dimensioned to pick up an electromagnetic field. The electromagnetic field induces a current in the at least one antenna proportional to a magnitude of the electromagnetic field. The internal detector also includes a circuit configured to generate a DC signal based on the induced current in the at least one antenna and a processing section configured to compare the DC signal with a threshold and output a result of the comparison to a built-in test section. The internal detector may be used to test EMI filter pin connectors of a closed line replaceable unit.

    Abstract translation: 提供了用于检测线路可更换单元中的高强度辐射场(HIRF)的各种实施例。 例如,内部检测器包括附接到底盘的至少一个天线。 所述至少一个天线被配置和设计成拾取电磁场。 电磁场在至少一个天线中产生与电磁场的幅度成比例的电流。 内部检测器还包括被配置为基于至少一个天线中的感应电流产生DC信号的电路和被配置为将DC信号与阈值进行比较并将比较结果输出到内置测试的处理部分 部分。 内部检测器可用于测试封闭线路可更换单元的EMI滤波器针连接器。

    DISCRETE TIME METHOD, SYSTEM AND SOFTWARE PROGRAM FOR DETECTION OF OSCILLATIONS IN CONTINUOUS DATA
    26.
    发明申请
    DISCRETE TIME METHOD, SYSTEM AND SOFTWARE PROGRAM FOR DETECTION OF OSCILLATIONS IN CONTINUOUS DATA 有权
    用于检测连续数据中的振荡的离散时间方法,系统和软件程序

    公开(公告)号:US20160253223A1

    公开(公告)日:2016-09-01

    申请号:US15032670

    申请日:2015-08-27

    CPC classification number: G06F9/542 G01H1/00 G06F9/4887

    Abstract: One embodiment of the present invention relates to a discrete time method for detection of oscillations in continuous data. Another embodiment of the present invention relates to a discrete time system for detection of oscillations in continuous data. Another embodiment of the present invention relates to a discrete time software program for detection of oscillations in continuous data.

    Abstract translation: 本发明的一个实施例涉及用于检测连续数据中的振荡的离散时间方法。 本发明的另一实施例涉及用于检测连续数据中的振荡的离散时间系统。 本发明的另一个实施例涉及用于检测连续数据中的振荡的离散时间软件程序。

    Dual Kalman Filter For Torsional Damping of Electric Traction Drives
    27.
    发明申请
    Dual Kalman Filter For Torsional Damping of Electric Traction Drives 有权
    双卡尔曼滤波器用于电牵引驱动器的扭转阻尼

    公开(公告)号:US20160059735A1

    公开(公告)日:2016-03-03

    申请号:US14888260

    申请日:2015-02-26

    Abstract: In one aspect, a system for torsional damping of electric traction drives comprises dual Kalman filters to correct for oscillations based on measured traction motor speed and commanded traction motor torque. A first Kalman filter can perform a state space estimate of the shaft torque providing negative feedback to the final torque command in order to eliminate resonant components from the commanded torque and quickly damp external disturbances. A second Kalman filter provides a state space estimation of the load torque or, equivalently, load acceleration. This second Kalman filter can ignore commanded torque and can provide a damping feedback when the wheel speed deviates from the vehicle speed.

    Abstract translation: 在一个方面,电力牵引驱动装置的扭转阻尼系统包括双卡尔曼滤波器,用于基于测量的牵引电动机速度和指令的牵引电动机转矩校正振荡。 第一卡尔曼滤波器可以执行轴转矩的状态空间估计,为最终转矩指令提供负反馈,以便从命令转矩中消除谐振分量,并快速地抑制外部干扰。 第二卡尔曼滤波器提供负载转矩的状态空间估计,或者等效地提供负载加速度。 该第二卡尔曼滤波器可以忽略指令转矩,并且可以在车轮速度偏离车速时提供阻尼反馈。

    Stator construction for high performance rotating machines
    28.
    发明申请
    Stator construction for high performance rotating machines 有权
    高性能旋转机的定子结构

    公开(公告)号:US20030001441A1

    公开(公告)日:2003-01-02

    申请号:US09894114

    申请日:2001-06-29

    CPC classification number: H02K3/24 H02K3/14 H02K9/19

    Abstract: A rotating machine is provided which includes a stator having a number of field winding slots; a number of field windings disposed in each of the field winding slots, at least two of the field windings have: an outer jacket; and a number of conductive wires disposed within and enclosed by the outer jacket such that longitudinal passages are defined between the conductive wires; and circulation means for circulating a coolant into and from the rotating machine through the longitudinal passages. Preferably, the rotating machine further includes a housing which has a cavity for acceptance of the stator therein. The housing and stator define first and second plenums at first and second ends of the stator. The coolant enters the rotating machine into the first plenum and exits the rotating machine from the second plenum.

    Abstract translation: 提供一种旋转机器,其包括具有多个励磁绕组槽的定子; 设置在每个场绕组槽中的多个场绕组,至少两个励磁绕组具有:外护套; 以及设置在外护套内并由外护套围绕的许多导线,使得在导线之间限定纵向通道; 以及循环装置,用于使冷却剂通过纵向通道循环到旋转机器中。 优选地,旋转机械还包括壳体,该壳体具有用于在其中接纳定子的空腔。 壳体和定子在定子的第一和第二端处限定第一和第二增压室。 冷却剂进入旋转机器进入第一集气室,并从第二个充气室离开旋转机器。

    REDUNDANT VERIFIABLE HIGH VOLTAGE MEASUREMENT PORT FOR TRACTION INVERTER AND HIGH VOLTAGE DISTRIBUTION

    公开(公告)号:US20240361363A1

    公开(公告)日:2024-10-31

    申请号:US18141111

    申请日:2023-04-28

    CPC classification number: G01R19/155 H01R13/6616 G07C5/0808

    Abstract: A high voltage measurement port and a circuit contact wire assembly for vehicle high-voltage power decommissioning. The high voltage measurement port includes four externally accessible pins for obtaining an electrical characteristic measurement of a connected circuit. For redundancy, the assembly includes a resistor between a first measurement port pin and a first positive DC busbar at a first location, a resistor between a second pin and the first DC busbar at a second location different from the first location, a resistor between a third pin and a second negative DC busbar at a first location, and a resistor between a fourth pin and the second DC busbar at a second location different from the first location. Via the high voltage measurement port, a multi-meter can verify each resistance connection between the positive pins and then again between negative pins before a differential voltage measurement is made between positive and negative.

    High voltage gate drive circuitry
    30.
    发明授权

    公开(公告)号:US12114422B2

    公开(公告)日:2024-10-08

    申请号:US18067316

    申请日:2022-12-16

    Abstract: A gate drive topology and gate drive power supply topology designed to allow for a single Printed Wiring Board (PWB) design to be configured for two applications. In one application, select paired locations of solder pads or connector locations in the circuitry are populated with connecting “spanning” resistors for integration within the gate driver and gate driver power supply topologies. The physical manifestation of these resistors on the PWB allows paralleled gate drive switching of corresponding power transistor devices for driving a load. A common gate-source voltage is applied to all three gates and the switching devices share dynamic switching and conduction loss. In an alternate application, the select paired locations are not populated with spanning resistors thereby rendering a circuit topology permitting independent operation independent power transistor gate driving switching operations. The path across the unpopulated spanning resistors provides a high voltage creepage isolation between independent gate driver circuits.

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