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7 条记录 (耗时 0.012 秒)

    Motor starting apparatus for an engine driven generator
    1.
    发明授权
    Motor starting apparatus for an engine driven generator 有权
    发动机驱动发电机的起动装置

    公开(公告)号：US6118238A

    公开(公告)日：2000-09-12

    申请号：US140744

    申请日：1998-08-26

    申请人： James L. Munro ,  Thomas C. Matty

    发明人： James L. Munro ,  Thomas C. Matty

    IPC分类号： H02P9/08 ,  H02P5/20

    CPC分类号： H02P9/08

    摘要： A conventional motor controlling circuit is adapted to control an inverter that drives a permanent magnet generator as a motor to spin an engine to a speed sufficient to permit the engine to start. The commutation frequency is adjusted as a function of speed utilizing an automatic commutation frequency adjustment circuit. This circuit has multiple commutation frequency ranges that overcome a large initial bearing drag during low speed operation while still permitting high speed operation. The automatic commutation frequency adjustment circuit preferably generates first and second voltage ramps that overcome the initial bearing drag and accelerate the generator at a rate fast enough for sufficient back EMF to be generated for a closed-loop commutation phase. A speedup circuit operates during the closed-loop commutation phase to achieve the high speeds typically necessary for engine starting. The inventive circuits even permit a turbine type engine to be successfully started.

    摘要翻译： 传统的电机控制电路适用于控制驱动永久磁铁发电机作为电动机的逆变器，以使发动机旋转到足以允许发动机启动的速度。 利用自动换流频率调节电路将换流频率调整为速度的函数。 该电路具有多个换向频率范围，在低速运行期间克服了大的初始轴承阻力，同时仍允许高速运行。 自动换向频率调节电路优选地产生克服初始轴承阻力并且以足够快的速率加速发电机的第一和第二电压斜坡，以便为闭环换向相产生足够的反电动势。 加速电路在闭环换向期间运行，以实现发动机起动通常所需的高速。 本发明的电路甚至允许涡轮式发动机成功启动。

    Digital pulse width modulator with integrated test and control
    2.
    发明授权
    Digital pulse width modulator with integrated test and control 失效
    数字脉宽调制器，集成测试和控制

    公开(公告)号：US5506484A

    公开(公告)日：1996-04-09

    申请号：US258305

    申请日：1994-06-10

    申请人： James L. Munro ,  Geoffrey B. Lansberry ,  Beth A. Herman

    发明人： James L. Munro ,  Geoffrey B. Lansberry ,  Beth A. Herman

    IPC分类号： B60L11/12 ,  B60L15/08 ,  H02M7/537 ,  H02M7/5387 ,  H02P27/06 ,  H03K7/08 ,  H02P7/29

    CPC分类号： B60L11/1803 ,  B60L15/025 ,  B60L15/08 ,  B60L3/0069 ,  B60L7/14 ,  H02M7/53873 ,  H03K7/08 ,  B60L2240/36 ,  Y02T10/643 ,  Y02T10/7005

    摘要： A pulse width modulator (PWM) circuit for generating pulses to enable a driver control unit to drive a pair of switching circuits for an electric motor including an input section for receiving an N bit digitized input signal to be modulated and a PWM counter for continuously counting up from zero to a predetermined number and back down to zero, the PWM counter generating a digitized triangular waveform having N bits of resolution corresponding to the predetermined number. A compare unit receives and compares the digitized input signal and the digitized triangular waveform to produce an output pulse and a dead-time generator unit produces a first pulse and a second pulse from the output pulse produced from the compare unit. The first and second pulses each drives a corresponding one of the switching circuits and the first and second pulses have different transition times relative to each other. A built-in test (BIT) circuit provides BIT input signals corresponding to the first and second pulses to verify correct operation of the PWM circuit including a feed back path from the driver control unit, the driver control unit having a higher level of integration than the PWM circuit, and the BIT input signals providing individual control of each of the PWM signals.

    摘要翻译： 一种脉冲宽度调制器（PWM）电路，用于产生脉冲以使得驱动器控制单元能够驱动电动机的一对开关电路，该电动机包括用于接收要调制的N位数字化输入信号的输入部分和用于连续计数的PWM计数器 该PWM计数器产生一个数字化的三角形波形，其具有对应于预定数量的N位分辨率。 比较单元接收并比较数字化输入信号和数字化三角波形以产生输出脉冲，死区发生器单元从比较单元产生的输出脉冲产生第一脉冲和第二脉冲。 第一和第二脉冲各自驱动对应的一个开关电路，并且第一和第二脉冲具有相对于彼此的不同的转换时间。 内置测试（BIT）电路提供与第一和第二脉冲相对应的BIT输入信号，以验证PWM电路的正确操作，包括来自驱动器控制单元的反馈路径，驱动器控制单元具有比 PWM电路和BIT输入信号，提供每个PWM信号的单独控制。

    Fault detection circuit for sensing leakage currents between power source and chassis
    3.
    发明授权
    Fault detection circuit for sensing leakage currents between power source and chassis 失效
    用于检测电源和机箱之间的漏电流的故障检测电路

    公开(公告)号：US5481194A

    公开(公告)日：1996-01-02

    申请号：US258179

    申请日：1994-06-10

    申请人： David L. Schantz ,  James L. Munro

    发明人： David L. Schantz ,  James L. Munro

    IPC分类号： G01R31/00 ,  G01R31/02

    CPC分类号： G01R31/025 ,  B60L1/003 ,  B60L1/02 ,  B60L11/1803 ,  B60L3/0046 ,  B60L3/0069 ,  B60L3/04 ,  G01R31/006 ,  B60L2250/10 ,  Y02T10/7005

    摘要： A fault detection circuit for detecting leakage currents between a DC power source and chassis of an automobile, includes a voltage sensor coupled to the DC power source, the voltage sensor including an analog reference and a chassis ground. A differential amplifier is coupled to the voltage sensor and detects variations in the analog reference and the chassis ground. A voltage comparator unit determines whether the variations detected in the differential amplifier is above a predetermined threshold value. A built-in test circuit tests whether the fault detection circuit is operating correctly.

    摘要翻译： 一种用于检测汽车直流电源和底盘之间的泄漏电流的故障检测电路，包括耦合到直流电源的电压传感器，电压传感器包括模拟基准和机架接地。 差分放大器耦合到电压传感器，并检测模拟参考和机箱接地的变化。 电压比较器单元确定在差分放大器中检测到的变化是否高于预定阈值。 内置测试电路检查故障检测电路是否正常工作。

    Line power unit for micropower generation
    4.
    发明授权
    Line power unit for micropower generation 失效
    用于微功率发电的线路电源单元

    公开(公告)号：US6128204A

    公开(公告)日：2000-10-03

    申请号：US140393

    申请日：1998-08-26

    申请人： James L. Munro ,  Thomas C. Underwood ,  Thomas C. Matty ,  William B. Hall ,  Edward T. Wagner

    发明人： James L. Munro ,  Thomas C. Underwood ,  Thomas C. Matty ,  William B. Hall ,  Edward T. Wagner

    IPC分类号： H02J3/44 ,  H02P9/08 ,  H02P9/30 ,  H02M1/12 ,  H02P5/20

    CPC分类号： H02P9/30 ,  H02J3/44 ,  H02P9/08

    摘要： A line power unit controls electrical power delivery to a grid from a three phase permanent magnet generator. A line power unit controller receives a power level command and controls a main inverter that draws DC power from a DC bus to deliver the commanded power to a grid. The DC bus is fed DC voltage via a three phase permanent magnet generator and a rectifier. The inverter delivers power to the grid via a filter, transformer and main contactor. The line power unit controller also controls the main contactor to break the connection with the grid. A precharge circuit draws power from the grid to precharge the DC bus to a precharge voltage. Alternatives include a start inverter separate from the main inverter that permits simultaneous delivery of power to the grid and commutation of the permanent magnet generator as a motor to spin an engine connected thereto at a speed sufficient to permit engine starting. Another alternative utilizes a single inverter for engine starting and power delivery which does not permit these operations to be simultaneously performed. Further alternatives include eliminating the transformer by utilizing a high-voltage rated main inverter.

    摘要翻译： 线路电源单元控制从三相永磁发电机向电网的电力输送。 线路电源单元控制器接收功率电平命令并控制从DC总线吸取直流电力以将指令的电力传递到电网的主逆变器。 直流母线通过三相永磁发电机和整流器馈送直流电压。 逆变器通过滤波器，变压器和主接触器向电网供电。 线路电源单元控制器还控制主接触器断开与电网的连接。 预充电电路从电网抽取电力，以将DC总线预充电到预充电电压。 替代方案包括与主逆变器分开的启动逆变器，其允许同时向电网输送电力，并且以永久磁铁发电机作为电动机换向以足以允许发动机启动的速度旋转连接到其上的发动机。 另一个替代方案是使用单个逆变器进行发动机起动和动力输送，这不允许同时执行这些操作。 其他替代方案包括通过利用高压额定主逆变器来消除变压器。

    EMI filter topology for power inverters
    6.
    发明授权
    EMI filter topology for power inverters 失效
    电源逆变器的EMI滤波器拓扑

    公开(公告)号：US5552976A

    公开(公告)日：1996-09-03

    申请号：US258153

    申请日：1994-06-10

    申请人： James L. Munro ,  David L. Schantz, Jr.

    发明人： James L. Munro ,  David L. Schantz, Jr.

    IPC分类号： B60L3/00 ,  B60L9/00 ,  H02M1/12 ,  H02M1/14 ,  H02M1/44 ,  H02P27/06

    CPC分类号： H02M1/44 ,  B60L9/005 ,  H02M1/12

    摘要： A EMI filter for an electric vehicle propulsion system, comprising a first and second capacitive element electrically connected in parallel with first and second power conductors, an inductive element electrically connected in series with the first power conductor and separating the first and second capacitive elements, and first and second junctions electrically connecting the second capacitive element to an electronic switch, wherein the sum of intrinsic inductances of the first and second junctions is less than the intrinsic inductance of the second capacitive element.

    摘要翻译： 一种用于电动车辆推进系统的EMI滤波器，包括与第一和第二电力导体并联电连接的第一和第二电容性元件，与第一电力导体串联电连接并分离第一和第二电容元件的电感元件，以及 将第二电容元件电连接到电子开关的第一和第二结，其中第一和第二结的固有电感之和小于第二电容元件的固有电感。