公开(公告)号：US5710697A

公开(公告)日：1998-01-20

申请号：US622009

申请日：1996-03-26

申请人： Philip R. Cooke ,  John R. Wiggenhorn

发明人： Philip R. Cooke ,  John R. Wiggenhorn

IPC分类号： H02M3/335

CPC分类号： H02M1/32 ,  H02M3/33546

摘要： A power supply controller implementing frequency foldback and volt-second duty cycle clamp features. An oscillator timing capacitor is charged with a fixed current and is discharged with a fixed current when the output voltage is above a predetermined level and with a decreasing current when the output voltage falls below the predetermined level, so as to decrease the power supply operating frequency during short circuit or overload fault conditions. A volt-second duty cycle clamp circuit limits the duty cycle to a maximum value which is independent of the tolerance of a capacitor which sets the maximum duty cycle as a function of the power supply input voltage.

摘要翻译： 实现频率折返和伏秒占空比钳位功能的电源控制器。 振荡器定时电容器以固定电流充电，并且当输出电压高于预定电平并且当输出电压下降到预定电平以下时，以固定电流放电，以便降低电源工作频率 在短路或过载故障条件下。 伏特第二占空比钳位电路将占空比限制在最大值，该最大值与电容器的公差无关，该电容器将最大占空比设置为电源输入电压的函数。

公开(公告)号：US06366070B1

公开(公告)日：2002-04-02

申请号：US09903942

申请日：2001-07-12

申请人： Philip R. Cooke ,  Richard Redl

发明人： Philip R. Cooke ,  Richard Redl

IPC分类号： G05F144

CPC分类号： H02M3/1588 ,  H02M2001/0032 ,  Y02B70/1466 ,  Y02B70/16

摘要： A switching voltage regulator employs a “dual modulation” scheme to control the regulator's switching components. A control circuit indirectly monitors load current. When the load decreases, the control circuit reduces both the duty ratio and the frequency of the control signals which operate the switching transistors, thereby maintaining a high efficiency level over a wider output current range than can be achieved with fixed-frequency control signals. In a preferred embodiment, the regulator employs three operating modes. For heavy loads, the switching components are operated at a constant frequency. For moderate-to-light loads, the dual modulation control scheme is used. For light loads, the regulator enters a “pulse-skipping” mode which can achieve very low operating frequencies to further improve efficiency. The invention may be used with switching regulators using peak current mode, average current mode, or voltage mode control, as well as buck, buck-boost, and boost power stages.

摘要翻译： 开关电压调节器采用“双调制”方案来控制调节器的开关元件。 控制电路间接监视负载电流。 当负载减小时，控制电路降低了操作开关晶体管的控制信号的占空比和频率，从而在比固定频率控制信号可以实现的更宽的输出电流范围内保持高效率电平。 在优选实施例中，调节器采用三种操作模式。 对于重负载，开关元件以恒定频率工作。 对于中轻负载，使用双调制控制方案。 对于轻负载，稳压器进入“脉冲跳跃”模式，可以实现非常低的工作频率，以进一步提高效率。 本发明可以使用峰值电流模式，平均电流模式或电压模式控制以及降压，降压 - 升压和升压功率级的开关稳压器。

公开(公告)号：US5229700A

公开(公告)日：1993-07-20

申请号：US873328

申请日：1992-04-24

申请人： Thomas D. Stitt ,  Philip R. Cooke ,  Ajith K. Kumar

发明人： Thomas D. Stitt ,  Philip R. Cooke ,  Ajith K. Kumar

IPC分类号： H02P23/00 ,  H02P27/06

CPC分类号： H02P27/06 ,  H02P23/0077

摘要： A method and system for calibration of a primary signal processing path without interruption of signal processing utilizes a calibration signal processing path which is periodically used to process a signal concurrently with processing in the primary path. Any difference is compensated by gain adjustment in the primary path. In one form, a plurality of primary paths are sequentially compared with a calibrated path. The calibrated path is periodically checked using a precision reference and any error is corrected before comparison of the primary paths.

摘要翻译： 用于校准主信号处理路径而不中断信号处理的方法和系统利用周期性地用于与主路径中的处理同时处理信号的校准信号处理路径。 通过主路径中的增益调整补偿任何差异。 在一种形式中，多个主路径与校准路径顺序地比较。 使用精确参考周期性地检查校准路径，并且在比较主路径之前校正任何错误。

公开(公告)号：US5528445A

公开(公告)日：1996-06-18

申请号：US311338

申请日：1994-09-23

申请人： Philip R. Cooke ,  Joseph A. Laukaitis

发明人： Philip R. Cooke ,  Joseph A. Laukaitis

IPC分类号： B60L3/00 ,  H02H7/08

CPC分类号： B60L3/003 ,  B60L11/1805 ,  B60L3/0061 ,  B60L3/0069 ,  B60L2200/26 ,  B60L2220/14 ,  Y02T10/7005

摘要： A fault current protection system for a traction vehicle propulsion system including a synchronous generator having armature and field windings and power conditioning circuitry connecting the generator armature windings to a traction motor employs a normally charged capacitor which, in response to a fault signal resulting from excess current in the generator armature windings, is electrically switched into parallel with the excitation current source connected to the generator field windings so as to discharge through the generator field windings and commutate the excitation current source.

摘要翻译： 用于牵引车辆推进系统的故障电流保护系统包括具有电枢和励磁绕组的同步发电机和将发电机电枢绕组连接到牵引电动机的功率调节电路采用正常充电的电容器，其响应于由过电流产生的故障信号 在发电机电枢绕组中，电连接到与发电机励磁绕组连接的励磁电流源并联，以便通过发电机励磁绕组放电并使励磁电流源换向。

公开(公告)号：US5528444A

公开(公告)日：1996-06-18

申请号：US311337

申请日：1994-09-23

申请人： Philip R. Cooke ,  Joseph A. Laukaitis

发明人： Philip R. Cooke ,  Joseph A. Laukaitis

IPC分类号： B60L3/00 ,  H02H7/06 ,  H02H7/08

CPC分类号： H02H7/06 ,  B60L11/1805 ,  B60L3/003 ,  B60L3/0061 ,  B60L3/0069 ,  B60L2200/26 ,  B60L2220/14 ,  Y02T10/7005

摘要： A shorted diode protection system for a traction vehicle propulsion system including a synchronous generator having armature and field windings and a bridge rectifier circuit coupling the generator armature windings to a traction motor employs a normally non-conducting solid-state controllable electric valve in parallel with the generator field windings. When a rectifier diode of the bridge rectifier circuit fails short, an a-c current is reflected into the generator field winding circuit. Upon detection of this reflected current, the valve is switched into a conducting state, thereby limiting the voltage on the generator field windings.

摘要翻译： 一种用于牵引车辆推进系统的短路二极管保护系统，包括具有电枢和励磁绕组的同步发电机和将发电机电枢绕组耦合到牵引电动机的桥式整流器电路采用正常不导电的固态可控电动阀，与 发电机励磁绕组。 当桥式整流电路的整流二极管短路时，a-c电流被反射到发电机励磁绕组电路中。 在检测到这种反射电流时，阀被切换到导通状态，从而限制发电机励磁绕组上的电压。

公开(公告)号：US5483436A

公开(公告)日：1996-01-09

申请号：US114023

申请日：1993-08-30

申请人： Herbert J. Brown ,  Philip R. Cooke ,  Donald D. Bock

发明人： Herbert J. Brown ,  Philip R. Cooke ,  Donald D. Bock

IPC分类号： B60L9/22 ,  B60L11/18 ,  H02M7/5387 ,  H02M7/5395

CPC分类号： B60L9/22 ,  B60L11/1803 ,  H02M7/5387 ,  B60L2200/26 ,  B60L2210/20 ,  Y02T10/7005 ,  Y02T10/725

摘要： A power supply for a gate drive voltage supply system for a power inverter is coupled to receive a variable DC voltage and operable to produce a regulated DC output voltage to each of a plurality of distributed electronic switching devices. The system includes a plurality of linear voltage regulators with each respective one of the regulators having a power input terminal coupled to a common DC link. Each of the regulators is separately connected to a ground reference at a ground reference power terminal of a corresponding one of the switching devices so as to eliminate ground loops and voltage drops over a common ground bus.

摘要翻译： 用于电力逆变器的栅极驱动电压供应系统的电源被耦合以接收可变的直流电压并且可操作以向多个分布式电子开关装置中的每一个产生稳定的直流输出电压。 该系统包括多个线性稳压器，其中每个相应的调节器具有耦合到公共DC链路的功率输入端子。 每个调节器在相应一个开关装置的接地参考电源端分别连接到接地基准，以消除公共接地总线上的接地回路和电压降。