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    DUAL THRESHOLD OVERCURRENT RESET
    1.
    发明申请
    DUAL THRESHOLD OVERCURRENT RESET 有权

    公开(公告)号：US20210257901A1

    公开(公告)日：2021-08-19

    申请号：US16791593

    申请日：2020-02-14

    Applicant: Hamilton Sundstrand Corporation

    Inventor： Adam Michael White ,  Dwight D. Schmitt

    IPC: H02M1/32 ,  H02M5/04

    Abstract: A method of operating a power conversion system including converting variable frequency AC voltage to constant frequency AC voltage by a power converter, setting a first peak current reset threshold above operating currents previously observed during steady state short circuit current regulation in by a controller of the power converter, setting a second peak current reset threshold at a current lower than the previously observed steady state short-circuit regulation point observed during previous operation during steady state short circuit current regulation by the controllers of the power converter, resetting inverter converter AC output regulating voltage to 0 volts, and ramping AC output regulating voltage back up into steady-state operation when the second a peak current reset threshold is exceeded.

    Harmonic regulator with loop delay compensation
    3.
    发明授权
    Harmonic regulator with loop delay compensation 有权

    公开(公告)号：US10658919B1

    公开(公告)日：2020-05-19

    申请号：US16283874

    申请日：2019-02-25

    Applicant: Hamilton Sundstrand Corporation

    Inventor： Ernest Thompson ,  Adam Michael White

    IPC: H02M1/12 ,  H02M1/00 ,  H02M1/14 ,  H02M1/15 ,  G05F1/46

    Abstract: Embodiments of the invention provide for a system, method, and controller for operating a harmonic regulator with loop delay compensation. Some embodiments include receiving, at a controller, voltage feedback from a power system, and applying a harmonic regulator to each distortion frequency to be compensated. Embodiments also include applying a predetermined delay to an output of the harmonic regulator, scaling the delayed output and adding it to a power source voltage reference waveform, and providing condition power to a load, using the conditioned power source voltage reference waveform.

    Reduction technique for permanent magnet motor high frequency loss
    5.
    发明授权
    Reduction technique for permanent magnet motor high frequency loss 有权
    永磁电机减速技术的高频损耗

    公开(公告)号：US09385647B2

    公开(公告)日：2016-07-05

    申请号：US14464482

    申请日：2014-08-20

    Applicant: HAMILTON SUNDSTRAND CORPORATION

    Inventor： Adam Michael White

    IPC: G05B1/06 ,  H02P6/00 ,  H02P21/00 ,  G05D19/02

    CPC classification number: H02P29/50 ,  G05D19/02 ,  H02P6/001 ,  H02P6/06 ,  H02P6/34 ,  H02P21/0035 ,  H02P21/14 ,  H02P21/22

    Abstract: A system including a motor loss reducing controller system utilizing input band-shifting, an integral control architecture and inverse band-shifting is disclosed. The motor loss reducing controller system may provide correction of harmonic currents flowing to a PM motor from a motor controller. The compensation is added to the PWM voltage command signals. Within a compensator, d-axis and q-axis current feedback signals are frequency shifted down by n times the fundamental frequency. This converts the initial motor stationary harmonic currents into DC values. The frequency shifting is completed by multiplying the feedback signal by sine and cosine carrier signals of the shifted frequency. An integral controller may cancel any component of error at a desired DC value. An inverse frequency-shift transformation is applied to the output of the I controller in order to shift the command output signal back to the original reference frame.

    Abstract translation: 公开了一种包括利用输入带移动的电机损耗减少控制器系统，积分控制结构和反向带宽移位的系统。 电动机减速控制器系统可以提供从电动机控制器流向PM电动机的谐波电流的校正。 补偿被添加到PWM电压指令信号。 在补偿器内，d轴和q轴电流反馈信号向下移动基频的n倍。 这将初始的电机稳定谐波电流转换为直流值。 通过将反馈信号乘以移位频率的正弦和余弦载波信号来完成频移。 积分控制器可以以期望的DC值取消任何误差分量。 对I控制器的输出施加逆频移变换，以将命令输出信号移回原始参考帧。

    SYSTEM AND METHOD FOR COMMON-MODE ELIMINATION IN A MULTI-LEVEL CONVERTER
    7.
    发明申请
    SYSTEM AND METHOD FOR COMMON-MODE ELIMINATION IN A MULTI-LEVEL CONVERTER 有权
    用于多电平转换器中的共模消除的系统和方法

    公开(公告)号：US20140112040A1

    公开(公告)日：2014-04-24

    申请号：US13656880

    申请日：2012-10-22

    Applicant: HAMILTON SUNDSTRAND CORPORATION

    Inventor： Adam Michael White

    IPC: H02M7/00

    CPC classification number: H02M7/487 ,  H02M2007/53876

    Abstract: A multi-level converter includes a plurality of alternating current (AC) terminals connected to an AC source or load, at least three direct current (DC) terminals connected to a multi-level DC source or load, and a plurality of solid-state switches that are selectively turned On and Off to connect each of the plurality of AC terminals to one of the DC terminals. A controller provides PWM control signals to the solid-state switches. The controller utilizes space vector modulation to organize the various switching state configurations, and increments the switching states during a first half of the switching period and decrements the switching states during a second half of the switching period to center-align the PWM signals provided about the center of the switching period. The switching states utilized during the switching period dictate the PWM control signals provided to the plurality of switches employed in the three-level converter.

    Abstract translation: 多电平转换器包括连接到AC电源或负载的多个交流（AC）端子，连接到多电平DC电源或负载的至少三个直流（DC）端子和多个固态 选择性地打开和关闭的开关将多个AC端子中的每一个连接到DC端子中的一个。 控制器向固态开关提供PWM控制信号。 控制器利用空间矢量调制来组织各种开关状态配置，并且在开关周期的前半部分期间增加开关状态，并且在开关周期的后半段期间递减开关状态，使得围绕 中心的切换期。 在开关周期期间使用的开关状态决定了提供给三电平转换器中使用的多个开关的PWM控制信号。

    Electromagnetic interference (EMI) reduction in multi-level power converter
    9.
    发明授权
    Electromagnetic interference (EMI) reduction in multi-level power converter 有权
    多级电源转换器中的电磁干扰（EMI）降低

    公开(公告)号：US09270168B2

    公开(公告)日：2016-02-23

    申请号：US13836662

    申请日：2013-03-15

    Applicant: Hamilton Sundstrand Corporation

    Inventor： Adam Michael White ,  Mustansir Kheraluwala ,  Steven A. Davidson

    IPC: H02M7/538 ,  H02M1/44 ,  H02M7/487 ,  H02M7/501

    CPC classification number: H02M1/44 ,  H02M7/487 ,  H02M7/501 ,  H02M7/538

    Abstract: A multi-level power converter system includes a multi-level power converter configured to synthesize at least three direct current (DC) voltages into an alternating current (AC) output voltage, and includes a plurality of transistors. A controller generates pulse-width modulation (PWM) signals used to control a state of the plurality of transistors of the multi-level converter by comparing first and second carrier signals to a reference signals, wherein a period of the first and second carrier signals is randomly varied from a nominal period.

    Abstract translation: 多级功率转换器系统包括被配置为将至少三个直流（DC）电压合成为交流（AC）输出电压的多电平功率转换器，并且包括多个晶体管。 控制器通过将第一和第二载波信号与参考信号进行比较来产生用于控制多电平转换器的多个晶体管的状态的脉冲宽度调制（PWM）信号，其中第一和第二载波信号的周期是 从名义期间随机变化。

    INSULATING LIQUID IMMERSED BATTERY
    10.
    发明申请
    INSULATING LIQUID IMMERSED BATTERY 审中-公开
    绝缘液体电池

    公开(公告)号：US20150288037A1

    公开(公告)日：2015-10-08

    申请号：US14243222

    申请日：2014-04-02

    Applicant: HAMILTON SUNDSTRAND CORPORATION

    Inventor： Adam Michael White ,  Kris Harold Campbell ,  Charles Shepard

    IPC: H01M10/42

    CPC classification number: H01M10/4207 ,  H01M10/617 ,  H01M10/653 ,  H01M10/6551 ,  H01M10/6569

    Abstract: A multi-cell battery pack may be designed to serve as a thermosiphon. Stated another way, multi-cell battery pack may be designed to incorporate a passive heat exchange technique based on natural convection, which circulates a substance (liquid, or gas such as air) without the necessity of a mechanical pump. In this way, insulating fluid in cavities between cells greatly enhances the likelihood of preventing a thermal runaway condition. The insulating fluid in cavities between cells may result in reduced arcing and the elimination of combustion within a battery housing.

    Abstract translation: 多单元电池组可以设计成用作热虹吸管。 换句话说，多单元电池组可以被设计成结合基于自然对流的被动热交换技术，其循环物质（液体或气体例如空气）而不需要机械泵。 以这种方式，细胞之间的空腔中的绝缘液体大大增强了防止热失控状况的可能性。 电池之间的空腔中的绝缘流体可能导致减少的电弧放电和消除电池壳体内的燃烧。

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