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24 条记录 (耗时 0.015 秒)

    Phase shifter for controlling the power components and power factor of a cycloconverter
    2.
    发明授权
    Phase shifter for controlling the power components and power factor of a cycloconverter 失效
    用于控制循环变频器的功率分量和功率因数的移相器

    公开(公告)号：US3982168A

    公开(公告)日：1976-09-21

    申请号：US562338

    申请日：1975-03-26

    申请人： Bimal K. Bose ,  Paul M. Espelage

    发明人： Bimal K. Bose ,  Paul M. Espelage

    IPC分类号： H02M5/27

    CPC分类号： H02M5/271

    摘要： A phase shifter circuit generates cycloconverter reference signals for independently and linearly controlling the real power and input power factor or real and reactive power in either polarity. Using the per phase line voltage as a reference phasor, its amplitude and phase are adjusted by a sine-cosine converter, analog multipliers and summing amplifiers. The phase shifter has an almost instantaneous response and can be controlled by polarity reversing dc control signals.

    摘要翻译： 移相器电路产生循环转换器参考信号，用于独立和线性地控制有功功率和输入功率因数或者任一极性的实际和无功功率。 使用每相线路电压作为参考相量，其幅度和相位由正弦余弦转换器，模拟乘法器和求和放大器进行调整。 移相器具有几乎瞬时响应，可以通过极性反转直流控制信号来控制。

    Frequency insensitive sine wave-to-cosine wave converter
    4.
    发明授权
    Frequency insensitive sine wave-to-cosine wave converter 失效
    频率不灵敏正弦波到余弦波转换器

    公开(公告)号：US3983494A

    公开(公告)日：1976-09-28

    申请号：US561592

    申请日：1975-03-24

    申请人： Bimal K. Bose ,  Paul M. Espelage

    发明人： Bimal K. Bose ,  Paul M. Espelage

    IPC分类号： G06G7/22 ,  H02M5/27 ,  H03B27/00

    CPC分类号： G06G7/22 ,  H02M5/271

    摘要： Variable frequency sine waves are converted to constant amplitude cosine waves using the relationship cos .omega.t = .sqroot.1-sin.sup.2 .omega.t. The converter has an almost instantaneous response characteristic and is suitable for a wide frequency range. An application is cosine timing waves for phase controlled converters and cycloconverters.

    摘要翻译： 可变频率正弦波使用cosωω= 2ROOT1-sin2ωωt的关系转换为恒定幅度余弦波。 转换器具有几乎瞬时的响应特性，适用于较宽的频率范围。 应用是相位控制转换器和循环变换器的余弦定时波。

    Voltage control system for high frequency link cycloconverter
    5.
    发明授权
    Voltage control system for high frequency link cycloconverter 失效
    高频环绕变频器电压控制系统

    公开(公告)号：US3959720A

    公开(公告)日：1976-05-25

    申请号：US573373

    申请日：1975-04-30

    申请人： Bimal K. Bose ,  Paul M. Espelage

    发明人： Bimal K. Bose ,  Paul M. Espelage

    IPC分类号： H02M5/27 ,  G05F5/00

    CPC分类号： H02M5/271

    摘要： In a system including an input cycloconverter which operates a high frequency resonant tank circuit from a source of low frequency voltage supplied through an input reactor, with or without an output cycloconverter, an input cycloconverter control method and circuit maintains the tank voltage within predetermined limits for both directions of power flow. An additional feature is that the input power factor is programmable. In the voltage control scheme the cycloconverter reference signals vary with the commanded real power and power factor and respectively control the quadrature and direct components of induced cycloconverter voltage.

    摘要翻译： 在包括输入循环换流器的系统中，输入循环换流器通过输入反应器提供的低频电压源操作高频谐振回路，具有或不具有输出循环换流器，输入循环换流器控制方法和电路将罐电压保持在预定限度内 功率流的两个方向。 额外的功能是输入功率因数可编程。 在电压控制方案中，循环变频器参考信号随指令的有功功率和功率因数而变化，分别控制感应循环变频器电压的正交和直接分量。

    Twelve pulse load commutated inverter drive system
    7.
    发明授权
    Twelve pulse load commutated inverter drive system 失效
    十二脉冲负载换向变频驱动系统

    公开(公告)号：US4426611A

    公开(公告)日：1984-01-17

    申请号：US372749

    申请日：1982-04-28

    申请人： Paul M. Espelage ,  David L. Lippitt ,  Leland C. Tupper

    发明人： Paul M. Espelage ,  David L. Lippitt ,  Leland C. Tupper

    IPC分类号： H02P27/06 ,  H02M5/45 ,  H02P23/00 ,  H02P25/02 ,  H02P5/34

    CPC分类号： H02M5/4505 ,  H02P25/024 ,  H02P2201/13

    摘要： A control system for powering an AC load such as a polyphase synchronous motor having at least two sets of three phase (3.phi.) windings. Each three phase winding set is powered by an independently operable six pulse load commutated inverter drive including a source side converter and a load side converter coupled together by means of a DC link and wherein the source side converter and the load side converter are operated in accordance with respective current and load angle regulators which respond to torque command signals generated by speed regulators. The two motor drives operate concurrently in separate control channels which are substantially independent of one another with the exception that in one embodiment, which is the preferred embodiment, the speed regulator and the motor terminal overvoltage regulator are cross-coupled to effect a balanced torque command and motor terminal voltage from each channel while still providing for continued motor operation by one of the motor drive channels in the event that the other becomes inoperative for any reason. In a second embodiment, one of two redundant speed regulators is adapted to provide a common torque command to both channels with the other speed regulator taking over in the event of the failure of said one speed regulator.

    摘要翻译： 一种用于为诸如具有至少两组三相（3phi）绕组的多相同步电动机的交流负载供电的控制系统。 每个三相绕组由一个可独立操作的六个脉冲负载换向逆变器驱动器供电，该驱动器包括通过直流链路耦合在一起的源极侧转换器和负载侧转换器，其中源侧转换器和负载侧转换器按照 具有响应由调速器产生的转矩指令信号的各自的电流和负载角调节器。 两个电动机驱动器在独立的控制通道中同时运行，这些控制通道基本上彼此独立，除了在一个实施例中，优选实施例中，速度调节器和电动机端子过电压调节器交叉耦合以实现平衡转矩指令 并且每个通道的电动机端子电压同时由于任何原因而在另一个电机驱动通道不能工作的情况下继续由马达驱动通道运行。 在第二实施例中，两个冗余速度调节器中的一个适于在两个通道中提供公共转矩指令，而另一个调速器在所述一个速度调节器发生故障的情况下接管。

    Flux feedback firing control for a load commutated inverter
    8.
    发明授权
    Flux feedback firing control for a load commutated inverter 失效
    负载换向逆变器的通量反馈点火控制

    公开(公告)号：US4449087A

    公开(公告)日：1984-05-15

    申请号：US333933

    申请日：1981-12-23

    申请人： David L. Lippitt ,  Paul M. Espelage ,  Leland C. Tupper ,  Loren H. Walker ,  Herbert W. Weiss

    发明人： David L. Lippitt ,  Paul M. Espelage ,  Leland C. Tupper ,  Loren H. Walker ,  Herbert W. Weiss

    IPC分类号： H02P25/02 ,  H02P5/40

    CPC分类号： H02P25/024 ,  H02P2201/13

    摘要： A load commutated inverter synchronous motor drive system wherein a thyristor firing control of the inverter is determined by the amplitude of pesudo flux waveforms which are derived from the integral of the line voltages coupling the inverter to the motor being driven. A firing strategy is provided based on the premise that optimum thyristor firing in a load commutated inverter operating at a leading power factor occurs at a point just below the peak of the forthcoming pseudo flux waveform which point comprises an amount of volt-seconds necessary to effect current commutation plus a nominal safety margin. The determination and control is implemented, preferably, in a software phase lock loop but can, when desirable, be implemented in hardware.

    摘要翻译： 一种负载换向的逆变器同步电动机驱动系统，其中逆变器的晶闸管点火控制由从耦合到所驱动的电动机的线路电压的积分导出的pesudo通量波形的幅度确定。 基于这样的前提提供了一种点火策略，即在刚刚低于即将到来的伪通量波形的峰值的点处的负载换向逆变器中以最佳功率因数工作的最佳晶闸管点火发生在该点包括所需的伏秒的量 当前换向加上名义上的安全幅度。 确定和控制优选地在软件锁相环中实现，但是当期望地可以在硬件中实现时。

    Controlled current inverter and motor control system
    9.
    发明授权
    Controlled current inverter and motor control system 失效
    控制电流逆变器和电机控制系统

    公开(公告)号：US4230979A

    公开(公告)日：1980-10-28

    申请号：US895189

    申请日：1978-04-10

    申请人： Paul M. Espelage ,  Loren H. Walker ,  William G. Wright, deceased

    发明人： Paul M. Espelage ,  Loren H. Walker ,  William G. Wright, deceased

    IPC分类号： H02P21/00 ,  H02P27/04 ,  H02P5/28 ,  H02P3/18 ,  H02P7/36

    CPC分类号： H02P21/36

    摘要： A controlled current inverter system forms the basis of an a.c. motor drive system for furnishing the motor load with a variable frequency, variable magnitude a.c. current from an inverter which is supplied from a variable d.c. current source by way of a d.c. link including an inductor. Torque is the control parameter employed in the system and the motor speed and torque are controlled through the control of motor flux and motor current, by maintaining a controlled ratio between the direct and quadrature motor currents, through separate control paths to the d.c. source and the inverter. A third control path functioning on the difference between the desired and actual motor flux serves as a modifier to the main control paths to improve overall operation and control. Means associated with the basic control paths provide for dynamic braking of the motor.

    摘要翻译： 受控电流逆变器系统形成了一个交流电流的基础。 电机驱动系统，用于以可变频率，可变幅度a.c.提供电机负载。 来自变频器供电的电流的电流 目前来源以d.c. 链路包括电感器。 扭矩是系统中使用的控制参数，通过控制电机磁通和电机电流，通过直接和正交电机电流之间的控制比例，通过单独的控制路径到直流电流来控制电机转速和转矩。 源和逆变器。 根据期望的和实际的电动机磁通之间的差异起作用的第三控制路径用作主控制路径的修正器，以改善整体操作和控制。 与基本控制路径相关联的装置提供电动机的动态制动。

    Line-to-line voltage reconstruction for synchronizing thyristor power converter
    10.
    发明授权
    Line-to-line voltage reconstruction for synchronizing thyristor power converter 失效
    用于同步晶闸管功率转换器的线间电压重建

    公开(公告)号：US4399395A

    公开(公告)日：1983-08-16

    申请号：US300200

    申请日：1981-09-08

    申请人： Paul M. Espelage

    发明人： Paul M. Espelage

    IPC分类号： H02M1/08 ,  H02M5/45 ,  H02P27/06 ,  H02P7/62

    CPC分类号： H02M5/4505

    摘要： The effect of commutation notches 35 appearing in the nominally sinusoidal alternating current (AC) line-to-line voltage, for example, v.sub.ab used to synchronize the firing of thyristors in three phase, phase-locked power converters 12 and 14 is essentially eliminated by reconstructing the corrupted line-to-line voltage by summing the integral of the corrupted line-to-line voltage .PSI..sub.ab with a signal proportional to the product of the delta load current, for example, i.sub.ab and the commutation inductance L.sub.c. The composite waveform .PSI..sub.ab +i.sub.ab .times.L.sub.c) resulting from the summation has well defined zero crossings 41 from which synchronizing pulses are generated for synchronizing the phase-locked thyristor firing circuit 18 implemented by either software or hardware techniques. Additionally, the reconstructed waveform is used to control commutation, particularly in the control of a load side converter i.e. inverter 14 which is utilized in an AC motor drive system.

    摘要翻译： 出现在名义上正弦交流（AC）线对线电压中的换向槽口35的作用，例如用于同步三相锁相功率转换器12和14中的晶闸管的点火的变压器基本上被 通过将损坏的线间电压PSI ab的积分与与δ负载电流（例如iab和乘法电感Lc）的乘积成比例的信号相加来重构损坏的线间电压。 由求和产生的复合波形PSI ab + iabxLc）具有良好定义的零交叉点41，产生同步脉冲用于使通过软件或硬件技术实现的锁相晶闸管点火电路18同步。 此外，重构波形用于控制换向，特别是在负载侧转换器的控制中，即在AC电动机驱动系统中使用的反相器14。