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    • 1. 发明授权
    • Method to re-engage start of dynamoelectric machine
    • 重新启动电动机的方法
    • US07810337B2
    • 2010-10-12
    • US11867106
    • 2007-10-04
    • Donal E BakerGary L. MilesRaymond J. Beckmann
    • Donal E BakerGary L. MilesRaymond J. Beckmann
    • F02C7/29
    • H02P1/46F02C7/275F05D2220/7642H02P1/029H02P6/182H02P27/06H02P2203/09H02P2207/05Y02T50/671
    • A method of starting a gas turbine engine with a synchronous multiphase alternating current (AC) dynamoelectric machine with a rotor and a stator that allows re-engagement of a starting operation at non-zero rotor speeds comprises the steps of: applying electrical excitation to the rotor; measuring electromotive force (EMF) generated in the stator; determining rotor speed, acceleration and position from the measured EMF by sensorless means; initiating closed-loop sensorless position controlled power to the stator if the determined rotor speed is at least a pre-determined minimum closed-loop sensorless re-engagement speed; initiating open-loop position controlled power to the stator if the determined rotor speed is less than the pre-determined minimum closed-loop sensorless re-engagement speed but at least a predetermined minimum open-loop re-engagement speed and the determined rotor acceleration is no more than a pre-determined maximum open-loop re-engagement acceleration; and initiating open-loop zero-speed start power to the stator if the determined rotor speed is less than the predetermined minimum open-loop re-engagement speed.
    • 一种利用具有转子和定子的同步多相交流(AC)电动机起动燃气涡轮发动机的方法,其允许在非零转子速度下重新接合启动操作包括以下步骤:将电激励施加到 转子 测量在定子中产生的电动势(EMF); 通过无传感器装置确定来自测量的EMF的转子速度,加速度和位置; 如果所确定的转子速度至少为预定的最小闭环无传感器重新接合速度,则启动闭环无传感器位置控制功率到定子; 如果确定的转子速度小于预定的最小闭环无传感器重新接合速度,但是至少预定的最小开环重新接合速度和确定的转子加速度是 不超过预先确定的最大开环重新加载; 以及如果确定的转子速度小于预定的最小开环重新接合速度,则向定子启动开环零速起动电力。
    • 3. 发明申请
    • METHOD TO RE-ENGAGE START OF DYNAMOELECTRIC MACHINE
    • 重新启动电动机的方法
    • US20090091133A1
    • 2009-04-09
    • US11867106
    • 2007-10-04
    • Donal E. BakerGary L. MilesRaymond J. Beckmann, JR.
    • Donal E. BakerGary L. MilesRaymond J. Beckmann, JR.
    • H02P9/08
    • H02P1/46F02C7/275F05D2220/7642H02P1/029H02P6/182H02P27/06H02P2203/09H02P2207/05Y02T50/671
    • A method of starting a gas turbine engine with a synchronous multiphase alternating current (AC) dynamoelectric machine with a rotor and a stator that allows re-engagement of a starting operation at non-zero rotor speeds comprises the steps of: applying electrical excitation to the rotor; measuring electromotive force (EMF) generated in the stator; determining rotor speed, acceleration and position from the measured EMF by sensorless means; initiating closed-loop sensorless position controlled power to the stator if the determined rotor speed is at least a pre-determined minimum closed-loop sensorless re-engagement speed; initiating open-loop position controlled power to the stator if the determined rotor speed is less than the pre-determined minimum closed-loop sensorless re-engagement speed but at least a predetermined minimum open-loop re-engagement speed and the determined rotor acceleration is no more than a pre-determined maximum open-loop re-engagement acceleration; and initiating open-loop zero-speed start power to the stator if the determined rotor speed is less than the predetermined minimum open-loop re-engagement speed.
    • 一种利用具有转子和定子的同步多相交流(AC)电动机起动燃气涡轮发动机的方法,其允许在非零转子速度下重新接合启动操作包括以下步骤:将电激励施加到 转子 测量在定子中产生的电动势(EMF); 通过无传感器装置确定来自测量的EMF的转子速度,加速度和位置; 如果所确定的转子速度至少为预定的最小闭环无传感器重新接合速度,则启动闭环无传感器位置控制功率到定子; 如果确定的转子速度小于预定的最小闭环无传感器重新接合速度,但是至少预定的最小开环重新接合速度和确定的转子加速度是 不超过预先确定的最大开环重新加载; 以及如果确定的转子速度小于预定的最小开环重新接合速度,则向定子启动开环零速起动电力。
    • 4. 发明申请
    • Active rectifier system with power factor correction
    • 主动整流系统具有功率因数校正功能
    • US20080013352A1
    • 2008-01-17
    • US11485953
    • 2006-07-13
    • Donal E. Baker
    • Donal E. Baker
    • H02M7/00
    • H02M7/217H02M1/4216Y02B70/126
    • A polyphase alternating current (AC) active rectifier system converts polyphase AC from an AC source to direct current (DC) on a DC bus comprising a positive DC bus line and a negative DC bus line with a switching element for each phase configured to direct current from the AC source to the DC bus through four different conducting paths with three electrical potential levels, including a positive DC level on the positive DC bus line, a negative DC level on the negative DC bus line and a neutral DC level between the positive and negative DC level on a neutral DC bus line and suppresses AC common mode electrical potential from the DC bus, comprising: a ground path between the neutral DC bus line and a system ground coupled to a neutral point for the AC source that clamps the level of the neutral DC level to the AC source neutral.
    • 多相交流(AC)有源整流器系统将多相交流电源从交流电源转换为直流母线,其中直流母线包括正直流母线和负直流母线,每相具有用于引导电流的开关元件 从交流电源到直流母线通过四个不同的导通路径,具有三个电位电平,包括正直流母线上的正直流电平,负直流总线上的负直流电平和正直流母线之间的中性直流电平, 中性DC总线上的负DC电平并且抑制来自DC总线的AC共模电位,包括:中性DC总线与耦合到用于AC电源的中性点的系统接地之间的接地路径, 中性直流电平到交流电源中性点。
    • 6. 发明授权
    • Toroidal transformer with electrostatic shield
    • 带静电屏蔽的环形变压器
    • US4459576A
    • 1984-07-10
    • US427331
    • 1982-09-29
    • David A. FoxDonal E. Baker
    • David A. FoxDonal E. Baker
    • H01F17/06H01F27/36H01F15/04
    • H01F27/362H01F17/062
    • A toroidal transformer is provided with an inner winding electrostatic shield formed by bringing together two conductive annular cups having a generally U-shaped radial cross section. The widths and radii of the sidewalls of these cups are dimensioned such that one of the sidewalls of the first cup forms a conductive interference fit with the corresponding sidewall of the second cup, while the other sidewall of the first cup is separated from the corresponding sidewall of the second cup by a gap, which prevents the shield from becoming a shorted turn. The shield formed by these two cups is placed around a wound core and a second winding is wound over the shield to form a transformer.
    • 环形变压器设置有通过将具有大致U形的径向横截面的两个导电环形杯组合在一起的内部绕组静电屏蔽。 这些杯的侧壁的宽度和半径的尺寸使得第一杯的侧壁中的一个与第二杯的相应侧壁形成导电过盈配合,而第一杯的另一个侧壁与相应的侧壁分离 的第二杯的间隙,这防止了防护罩变成短路。 由这两个杯形成的屏蔽件围绕卷绕的芯放置,并且第二绕组缠绕在屏蔽上以形成变压器。
    • 8. 发明申请
    • Hardware in the loop motor simulation
    • 硬件在回路电机模拟
    • US20100039120A1
    • 2010-02-18
    • US12228319
    • 2008-08-12
    • Curtis J. PludeRaymond J. Beckman, JR.Donal E. Baker
    • Curtis J. PludeRaymond J. Beckman, JR.Donal E. Baker
    • G01R31/28
    • G05B17/02G05B2219/23446
    • A simulator system is connected to simulate the connection of a mechanically loaded motor to a motor controller/driver. The simulator system includes a current transformer circuit for monitoring AC output currents provided by the motor controller/driver. A simulation controller calculates, based on the monitored AC output currents, dynamic load voltages that simulate the response that would be generated by a mechanically loaded motor based on the AC output currents provided by the motor controller/driver. A number of power supplies amplify the dynamic loading calculated by the simulation controller to generate a dynamic loading that opposes the AC output currents provided by the motor controller/driver.
    • 模拟器系统被连接以模拟机械负载的马达与马达控制器/驱动器的连接。 模拟器系统包括用于监测由电动机控制器/驱动器提供的交流输出电流的电流互感器电路。 仿真控制器根据监控的交流输出电流,根据电动机控制器/驱动器提供的交流输出电流,计算模拟由机械负载电动机产生的响应的动态负载电压。 一些电源放大由模拟控制器计算的动态负载,以产生与电机控制器/驱动器提供的交流输出电流相反的动态负载。
    • 10. 发明授权
    • Excitation control for wound field synchronous dynamoelectric machines
    • 伤口同步电机的励磁控制
    • US07268522B1
    • 2007-09-11
    • US11438612
    • 2006-05-20
    • Donal E. Baker
    • Donal E. Baker
    • H20P9/10
    • H02P9/38H02K19/26H02P25/024H02P25/04H02P2101/30H02P2207/05
    • A wound field synchronous (WFS) dynamoelectric machine comprises: a rotor assembly; an exciter generator section comprising a stationary multiphase exciter stator winding for receiving excitation power from a multiphase alternating current (AC) source to generate an exciter stator magnetic field, a multiphase exciter rotor winding in the rotor assembly for generating multiphase AC excitation power as it cuts through the exciter stator magnetic field and a rotating rectifier assembly in the rotor assembly for converting the multiphase AC excitation power to direct current (DC) excitation power; a synchronous machine section comprising a DC main rotor winding in the rotor assembly for generating a main rotor magnetic field and a stationary multiphase main stator winding for receiving a multiphase AC control signal to generate a rotating main stator magnetic field that interacts with the main rotor magnetic field to rotate the rotor assembly; and an impedance that selectively connects one phase of the exciter stator winding to another phase of the exciter stator winding that disconnects from the multiphase AC current source above a predetermined rotational speed of the rotor assembly.
    • 绕线场同步(WFS)电动机包括:转子组件; 励磁机发电机部分,包括用于从多相交流(AC)源接收励磁功率以产生励磁机定子磁场的固定多相励磁机定子绕组;多相励磁机转子绕组在转子组件中,用于产生多相交流励磁电力, 通过励磁机定子磁场和转子组件中的旋转整流器组件,用于将多相交流励磁功率转换为直流(DC)励磁功率; 一个同步机部分,包括一个直流主转子绕组在转子组件中,用于产生一个主转子磁场和一个固定的多相主定子绕组,用于接收多相交流控制信号,以产生与主转子磁铁相互作用的旋转主定子磁场 以转动转子组件; 以及阻抗,其将励磁机定子绕组的一相选择性地连接到激励器定子绕组的与转子组件的预定转速之上的多相AC电流源断开的另一相。