Resonant snubber inverter
    1.
    发明授权
    Resonant snubber inverter 失效
    谐振缓冲变频器

    公开(公告)号:US5642273A

    公开(公告)日:1997-06-24

    申请号:US316612

    申请日:1994-09-30

    Abstract: A resonant, snubber-based, soft switching, inverter circuit achieves lossless switching during dc-to-ac power conversion and power conditioning with minimum component count and size. Current is supplied to the resonant snubber branches solely by the main inverter switches. Component count and size are reduced by use of a single semiconductor switch in the resonant snubber branches. Component count is also reduced by maximizing the use of stray capacitances of the main switches as parallel resonant capacitors. Resonance charging and discharging of the parallel capacitances allows lossless, zero voltage switching. In one embodiment, circuit component size and count are minimized while achieving lossless, zero voltage switching within a three-phase inverter.

    Abstract translation: 基于谐振,缓冲器的软开关逆变电路在直流到交流电源转换和功率调节期间实现无损开关,具有最小的元件数量和尺寸。 电流由主逆变开关提供给谐振缓冲器支路。 通过在谐振缓冲器分支中使用单个半导体开关来减少元件数量和尺寸。 通过最大化主开关的杂散电容作为并联谐振电容器,也减少了组件数量。 并联电容的谐振充放电允许无损,零电压切换。 在一个实施例中,电路元件尺寸和计数被最小化,同时实现三相逆变器内的无损,零电压开关。

    System and method for weighing and characterizing moving or stationary vehicles and cargo
    2.
    发明授权
    System and method for weighing and characterizing moving or stationary vehicles and cargo 失效
    称重和表征移动或固定车辆和货物的系统和方法

    公开(公告)号:US07375293B2

    公开(公告)日:2008-05-20

    申请号:US11550452

    申请日:2006-10-18

    CPC classification number: G01G23/3735 G01G19/02

    Abstract: A weigh-in-motion device and method having at least one transducer pad, each transducer pad having at least one transducer group with transducers positioned essentially perpendicular to the direction of travel. At least one pad microcomputer is provided on each transducer pad having a means for calculating first output signal indicative of weight, second output signal indicative of time, and third output signal indicative of speed. At least one host microcomputer is in electronic communication with each pad microcomputer, and having a means for calculating at least one unknown selected from the group consisting of individual tire weight, individual axle weight, axle spacing, speed profile, longitudinal center of balance, and transverse center of balance.

    Abstract translation: 一种具有至少一个换能器垫的称重运动装置和方法,每个换能器垫具有至少一个具有基本上垂直于行进方向定位的换能器的换能器组。 在每个换能器垫上设置至少一个焊盘微计算机,其具有用于计算表示重量的第一输出信号,表示时间的第二输出信号和表示速度的第三输出信号的装置。 至少一个主机微型计算机与每个焊盘微型计算机进行电子通信,并且具有用于计算至少一个未知的装置的装置,该装置选自单个轮胎重量,单个轴重量,轴间距,速度轮廓,纵向中心平衡和 横向平衡中心。

    Off-resonance frequency operation for power transfer in a loosely coupled air core transformer
    4.
    发明授权
    Off-resonance frequency operation for power transfer in a loosely coupled air core transformer 有权
    松散耦合的空心变压器中的功率传递的非共振频率操作

    公开(公告)号:US08310202B2

    公开(公告)日:2012-11-13

    申请号:US12858070

    申请日:2010-08-17

    CPC classification number: H02M3/3376 H01F38/14 H02J5/005 H02J7/025 H02J50/12

    Abstract: A power transmission system includes a loosely coupled air core transformer having a resonance frequency determined by a product of inductance and capacitance of a primary circuit including a primary coil. A secondary circuit is configured to have a substantially same product of inductance and capacitance. A back EMF generating device (e.g., a battery), which generates a back EMF with power transfer, is attached to the secondary circuit. Once the load power of the back EMF generating device exceeds a certain threshold level, which depends on the system parameters, the power transfer can be achieved at higher transfer efficiency if performed at an operating frequency less than the resonance frequency, which can be from 50% to 95% of the resonance frequency.

    Abstract translation: 电力传输系统包括松耦合空气变压器,其具有由包括初级线圈的初级电路的电感和电容的乘积确定的谐振频率。 次级电路被配置为具有基本上相同的电感和电容的乘积。 产生具有功率传递的反电动势的反电动势产生装置(例如电池)被附接到次级电路。 一旦反电动势产生装置的负载功率超过了取决于系统参数的某个阈值电平,则如果在小于谐振频率的工作频率下执行,则可以以更高的传输效率实现功率传输,其可以是来自50 %〜95%的谐振频率。

    OFF-RESONANCE FREQUENCY OPERATION FOR POWER TRANSFER IN A LOOSELY COUPLED AIR CORE TRANSFORMER
    5.
    发明申请
    OFF-RESONANCE FREQUENCY OPERATION FOR POWER TRANSFER IN A LOOSELY COUPLED AIR CORE TRANSFORMER 有权
    在LOXELY耦合空心磁芯变压器中进行功率传递的非共振频率操作

    公开(公告)号:US20120043930A1

    公开(公告)日:2012-02-23

    申请号:US12858070

    申请日:2010-08-17

    CPC classification number: H02M3/3376 H01F38/14 H02J5/005 H02J7/025 H02J50/12

    Abstract: A power transmission system includes a loosely coupled air core transformer having a resonance frequency determined by a product of inductance and capacitance of a primary circuit including a primary coil. A secondary circuit is configured to have a substantially same product of inductance and capacitance. A back EMF generating device (e.g., a battery), which generates a back EMF with power transfer, is attached to the secondary circuit. Once the load power of the back EMF generating device exceeds a certain threshold level, which depends on the system parameters, the power transfer can be achieved at higher transfer efficiency if performed at an operating frequency less than the resonance frequency, which can be from 50% to 95% of the resonance frequency.

    Abstract translation: 电力传输系统包括松耦合空气变压器,其具有由包括初级线圈的初级电路的电感和电容的乘积确定的谐振频率。 次级电路被配置为具有基本上相同的电感和电容的乘积。 产生具有功率传递的反电动势的反电动势产生装置(例如电池)被附接到次级电路。 一旦反电动势产生装置的负载功率超过了取决于系统参数的某个阈值电平,则如果在小于谐振频率的工作频率下执行,则可以以更高的传输效率实现功率传输,该频率可以是50 %〜95%的谐振频率。

    Non-intrusive beam power monitor for high power pulsed or continuous
wave lasers
    8.
    发明授权
    Non-intrusive beam power monitor for high power pulsed or continuous wave lasers 失效
    用于大功率脉冲或连续波激光器的非侵入式光束功率监视器

    公开(公告)号:US5184189A

    公开(公告)日:1993-02-02

    申请号:US706831

    申请日:1991-05-29

    CPC classification number: G01J1/4257 H01S3/131

    Abstract: A system and method for monitoring the output of a laser is provided in which the output of a photodiode disposed in the cavity of the laser is used to provide a correlated indication of the laser power. The photodiode is disposed out of the laser beam to view the extraneous light generated in the laser cavity whose intensity has been found to be a direct correlation of the laser beam output power level. Further, the system provides means for monitoring the phase of the laser output beam relative to a modulated control signal through the photodiode monitor.

    Abstract translation: 提供了一种用于监视激光输出的系统和方法,其中设置在激光器空腔中的光电二极管的输出用于提供激光功率的相关指示。 光电二极管设置在激光束之外,以观察在激光腔中产生的外部光,其强度已经被发现与激光束输出功率水平直接相关。 此外,该系统提供了用于通过光电二极管监视器监测激光输出光束相对于经调制的控制信号的相位的装置。

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