公开(公告)号：US4295190A

公开(公告)日：1981-10-13

申请号：US95899

申请日：1979-11-19

申请人： Eric J. Stacey ,  Donal E. Baker

发明人： Eric J. Stacey ,  Donal E. Baker

IPC分类号： H02M5/27

CPC分类号： H02M5/271

摘要： Firing pulses to the thyristors in the nonload carrying bank of a naturally commutated power circuit of a static power converter are inhibited only after the current therethrough actually goes to zero. Where the thyristors are arranged in pulse groups, the firing pulses to each group are inhibited separately and in some instances not all groups in the nonload carrying bank are inhibited. Termination of current flow through a thyristor group is determined by comparing the group output voltage with a composite signal representative of the intended group voltage which is generated by summing selected portions of the source voltages applied to the group. Further firing of the thyristors in the group is inhibited only after the difference between these two signals exceeds a preset threshold value for an interval at least equal in duration to the thyristor reverse recovery time.

摘要翻译： 静态功率转换器的自然换向电源电路的无负载组中的晶闸管的发射脉冲仅在其中的电流实际上变为零之后才被抑制。 在晶闸管以脉冲组布置的情况下，对每组的点火脉冲被分开地禁止，并且在某些情况下不能阻止非负载组中的所有组。 通过将组输出电压与表示通过对施加到组施加的源电压的选定部分进行求和而产生的预期组电压的复合信号进行比较来确定通过晶闸管组的电流的终止。 只有在这两个信号之间的差异超过预设的阈值以至于与晶闸管反向恢复时间至少相等的间隔时，该组中的晶闸管的进一步点火被抑制。

公开(公告)号：US4303972A

公开(公告)日：1981-12-01

申请号：US95820

申请日：1979-11-19

申请人： Eric J. Stacey ,  Donal E. Baker ,  Charles L. Doughman ,  Ralph D. Jessee

发明人： Eric J. Stacey ,  Donal E. Baker ,  Charles L. Doughman ,  Ralph D. Jessee

IPC分类号： H02M5/27 ,  H02P13/30

CPC分类号： H02M5/27

摘要： The firing pulses to the nonload carrying bank only of the naturally commutated thyristor power circuit of a static power converter are retarded to reduce or eliminate the interbank circulating current. In one form of the invention, half wave rectified load current signals are summed with the output waveform reference signal applied to the positive and negative bank firing pulse generators in a sense to retard the pulses in the nonload carrying bank. In another form of the invention, the inversion end stops are used to generate the retarded firing pulses in the nonload carrying bank.

摘要翻译： 延迟到静态功率转换器的自然换向晶闸管电源电路的无负载库的点火脉冲，以减少或消除同步循环电流。 在本发明的一种形式中，半波整流负载电流信号与施加到正和负组触发脉冲发生器的输出波形参考信号相加，从而阻止无负载载波组中的脉冲。 在本发明的另一形式中，使用反转端止动件来产生无载运行组中的延迟点火脉冲。

公开(公告)号：US20100019862A1

公开(公告)日：2010-01-28

申请号：US12220279

申请日：2008-07-23

申请人： Frank Z. Feng ,  Dwight D. Schmiu ,  Donal E. Baker ,  John Huss ,  Curtis B. White ,  Jamal Shafii ,  Mark F. Stunkel

发明人： Frank Z. Feng ,  Dwight D. Schmiu ,  Donal E. Baker ,  John Huss ,  Curtis B. White ,  Jamal Shafii ,  Mark F. Stunkel

IPC分类号： H03H7/06

CPC分类号： H02M1/126 ,  H02M2001/123 ,  H03H7/06 ,  H03H7/1725 ,  H03H7/427

摘要： A low pass filter includes a differential mode filter and a common mode filter. The common mode portion of the filter includes at least one inductor and one capacitor, as well as a damping circuit with at least one capacitor. The low pass filter has a reduced weight, which is useful in circumstances in which weight is a significant factor, such as in aircraft.

摘要翻译： 低通滤波器包括差模滤波器和共模滤波器。 滤波器的共模部分包括至少一个电感器和一个电容器，以及具有至少一个电容器的阻尼电路。 低通滤波器具有减轻的重量，其在重量是重要因素的情况下是有用的，例如在飞行器中。

公开(公告)号：US20090091133A1

公开(公告)日：2009-04-09

申请号：US11867106

申请日：2007-10-04

申请人： Donal E. Baker ,  Gary L. Miles ,  Raymond J. Beckmann, JR.

发明人： Donal E. Baker ,  Gary L. Miles ,  Raymond J. Beckmann, JR.

IPC分类号： H02P9/08

CPC分类号： H02P1/46 ,  F02C7/275 ,  F05D2220/7642 ,  H02P1/029 ,  H02P6/182 ,  H02P27/06 ,  H02P2203/09 ,  H02P2207/05 ,  Y02T50/671

摘要： 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.

摘要翻译： 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。

公开(公告)号：US20080013352A1

公开(公告)日：2008-01-17

申请号：US11485953

申请日：2006-07-13

申请人： Donal E. Baker

发明人： Donal E. Baker

IPC分类号： H02M7/00

CPC分类号： H02M7/217 ,  H02M1/4216 ,  Y02B70/126

摘要： 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.

摘要翻译： 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。

公开(公告)号：US6038152A

公开(公告)日：2000-03-14

申请号：US204606

申请日：1998-12-03

申请人： Donal E. Baker

发明人： Donal E. Baker

IPC分类号： H02M7/219 ,  H02M5/42

CPC分类号： H02M7/219

摘要： An active rectifier circuit includes a rectifier bridge having a plurality of passive rectifiers and a switching element coupled across each passive rectifier. A control circuit is coupled to the switching elements and senses reactive current flow and includes a phase-locked loop responsive to the reactive current flow and a circuit for developing switching patterns for the switching elements.

摘要翻译： 有源整流电路包括具有多个无源整流器的整流桥和跨越无源整流器耦合的开关元件。 控制电路耦合到开关元件并且感测无功电流，并且包括响应于无功电流的锁相环和用于开发用于开关元件的开关模式的电路。

公开(公告)号：US4459576A

公开(公告)日：1984-07-10

申请号：US427331

申请日：1982-09-29

申请人： David A. Fox ,  Donal E. Baker

发明人： David A. Fox ,  Donal E. Baker

IPC分类号： H01F17/06 ,  H01F27/36 ,  H01F15/04

CPC分类号： H01F27/362 ,  H01F17/062

摘要： 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.

摘要翻译： 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。

公开(公告)号：US4359681A

公开(公告)日：1982-11-16

申请号：US328168

申请日：1981-12-07

申请人： Donal E. Baker ,  Kenneth C. Shuey

发明人： Donal E. Baker ,  Kenneth C. Shuey

IPC分类号： G05F1/445 ,  G05F3/02

CPC分类号： G05F1/445

摘要： An alternating current power controller is provided that employs DC transistor switching for subcycle switching capability and to eliminate problems associated with SCRs and furthermore provides internal elements for generating the required DC control power from the AC source whether the AC load is on or off.

摘要翻译： 提供了一种交流电源控制器，其采用用于子循环切换能力的DC晶体管切换，并且消除与SCR相关的问题，并且还提供用于从AC源产生所需DC控制功率的内部元件，无论AC负载是开还是关。

公开(公告)号：US09537307B2

公开(公告)日：2017-01-03

申请号：US13186436

申请日：2011-07-19

申请人： John Duward Sagona ,  Vietson M. Nguyen ,  Donal E. Baker ,  Randall Bax

发明人： John Duward Sagona ,  Vietson M. Nguyen ,  Donal E. Baker ,  Randall Bax

IPC分类号： H02H9/04

CPC分类号： H02H9/041

摘要： An example, overvoltage protection device includes a switch and a surge protection device that is selectively activated by actuating the switch. The switch is actuated in response to a voltage. An example method of absorbing an overvoltage includes sensing a voltage, and selectively activating a surge protection device in response to the sensed voltage.

摘要翻译： 作为示例，过电压保护装置包括通过致动开关而选择性地启动的开关和浪涌保护装置。 开关响应于电压被致动。 吸收过电压的示例性方法包括感测电压，以及响应于所感测的电压选择性地激活浪涌保护装置。

公开(公告)号：US08450892B2

公开(公告)日：2013-05-28

申请号：US12579743

申请日：2009-10-15

申请人： Dhaval Patel ,  Donal E. Baker

发明人： Dhaval Patel ,  Donal E. Baker

IPC分类号： H02K11/00

CPC分类号： H02K11/042 ,  H02K19/365

摘要： A machine for generating electricity has an exciter rotor with a plurality of coils, and is associated with a shaft to be driven by a source of rotation. A diode bridge is connected downstream of the exciter rotor to provide a rectifier for an AC current generated by rotation of the exciter rotor. The diode bridge rectifies the AC generated current into DC current, which is passed downstream to windings for a main rotor. A snubber circuit is positioned intermediate said rectifier and said main rotor, said snubber circuit including both a resistor and a capacitor.

摘要翻译： 用于发电的机器具有具有多个线圈的励磁机转子，并且与由旋转源驱动的轴相关联。 二极管桥连接在励磁机转子的下游，为由励磁机转子旋转产生的交流电流提供整流器。 二极管桥将交流发电电流整流为直流电流，其通过下游传送到主转子的绕组。 缓冲电路位于所述整流器和所述主转子之间，所述缓冲电路包括电阻器和电容器。