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公开(公告)号：US4763059A
公开(公告)日：1988-08-09
申请号：US65529
申请日：1987-06-23
申请人： Paul M. Espelage , James M. Nowak
发明人： Paul M. Espelage , James M. Nowak
CPC分类号： H02P27/06 , H02M5/4505 , H02P23/0077 , H02P2201/03
摘要： An induction motor drive including a current source inverter system having controlled turn on and turn off semiconductors in a load side inverter selectively places notches in the waveshape of the current supplied to the parallel combination of the motor and a capacitor bank for the minimization of harmonics.
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公开(公告)号：US4426611A
公开(公告)日：1984-01-17
申请号：US372749
申请日：1982-04-28
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。
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公开(公告)号：US4449087A
公开(公告)日：1984-05-15
申请号：US333933
申请日：1981-12-23
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。
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公开(公告)号：US4230979A
公开(公告)日：1980-10-28
申请号：US895189
申请日：1978-04-10
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。
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5.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
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。
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6.发明授权Closed loop, microcomputer controlled pulse width modulated inverter-induction machine drive system 失效闭环，微电脑控制脉宽调制变频感应电机驱动系统
公开(公告)号：US4290001A
公开(公告)日：1981-09-15
申请号：US63126
申请日：1979-08-03
申请人： Paul M. Espelage
发明人： Paul M. Espelage
CPC分类号： H02P27/08 , H02P23/0077 , H02P27/047
摘要： Closed loop control of a pulse width modulated inverter-induction machine drive system is accomplished with a pair of microcomputers. The first microcomputer generates a periodic interrupt signal and a reference signal representative of the desired magnitude of a preselected induction machine parameter, the reference signal varying in frequency and amplitude in accordance with an externally-varied frequency value and amplitude value, respectively. The second microcomputer, when interrupted by the first microcomputer, computes the difference between the first microcomputer reference signal magnitude and the actual preselected machine parameter magnitude and the difference between the actual inverter output current magnitude and a preset limit, and controls inverter thyristor conduction accordingly.
摘要翻译： 脉宽调制逆变器感应电机驱动系统的闭环控制由一对微型计算机完成。 第一微型计算机产生周期性中断信号和表示预选感应电机参数的期望幅度的参考信号，参考信号分别根据外部变化的频率值和振幅值在频率和幅度上变化。 第二微型计算机在被第一微型计算机中断时，计算出第一微机参考信号幅度与实际预选机参数幅度之间的差异以及实际逆变器输出电流幅度与预设极限之间的差值，并据此控制逆变器晶闸管导通。
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公开(公告)号：US3982167A
公开(公告)日：1976-09-21
申请号：US600879
申请日：1975-07-31
申请人： Paul M. Espelage
发明人： Paul M. Espelage
IPC分类号： H02M5/27
CPC分类号： H02M5/271
摘要： In a system including an input cycloconverter which operates a high frequency resonant tank from a source of low frequency voltage supplied through a reactor, with or without an output cycloconverter, an input cycloconverter control circuit and method independently controls real and reactive power or real power and input power factor. The in-phase and quadrature components of input line current as well as the tank voltage are controlled, and for the main applications a simpler implementation has a limited range of phase angle settings close to 0.degree. and to .+-.90.degree.. The current control technique has the advantages of fast response and simplicity.
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电路和方法独立地控制实际和无功功率或有功功率， 输入功率因数。 控制输入线电流的同相和正交分量以及电池电压，对于主要应用来说，更简单的实现在接近0°和+/- 90°的相位角设置范围有限。 目前的控制技术具有响应速度快，简便的优点。
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8.发明授权
公开(公告)号：US3959719A
公开(公告)日：1976-05-25
申请号：US573372
申请日：1975-04-30
申请人： Paul M. Espelage
发明人： Paul M. Espelage
CPC分类号： H02M5/271 , H02J3/1842 , Y02E40/22
摘要： A polyphase cycloconverter operating in regenerative mode is connected between a voltage distribution system and a single phase high frequency resonant tank and controlled to produce essentially no real power flow to the resonant tank and a variable amount of leading (or lagging) reactive power. The static reactive power controller has fast response and can function as an electronically variable capacitor for power factor regulation, VAR control and adaptive filtering.
摘要翻译： 以再生模式工作的多相循环变频器连接在电压分配系统和单相高频谐振回路之间，并被控制以基本上不产生实际的功率流向谐振回路和可变量的前导（或滞后）无功功率。 静态无功功率控制器具有快速响应，可用作功率因数调节，VAR控制和自适应滤波的电子可变电容器。
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公开(公告)号：US4823068A
公开(公告)日：1989-04-18
申请号：US065471
申请日：1987-06-23
CPC分类号： H02M5/4505
摘要： An induction motor drive having source and load side converters with individual control channels for the respective converters includes a cross tie arrangement between the channels for increased system stability.
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10.发明授权Control for bumpless transfer of an AC motor between a solid-state inverter and a supply mains 失效控制在固态逆变器和电源之间的交流电机的无扰动传输
公开(公告)号：US4587474A
公开(公告)日：1986-05-06
申请号：US626712
申请日：1984-07-02
CPC分类号： H02J3/40
摘要： A power conditioner having a source and load converter each using a phase-locked loop to control their respective converter firings achieves synchronization with a supply mains by determining the phase error between supply mains and motor voltages by obtaining the instantaneous difference between the output signals of the source and load phase locked loops. This phase error is passed through a simple gain and summed with a speed regulator setpoint, which now becomes an inverter frequency regulator with the nominal setpoint being the supply mains frequency. The voltage amplitude error between the supply mains and the motor is obtained by comparing the absolute value of the source voltage with the properly scaled absolute value of the integrated motor voltage and this error signal is input to the flux regulator in a synchronous or induction motor controller in place of the normal input when not synchronizing.
摘要翻译： 具有源和负载转换器的功率调节器，每个使用锁相环来控制它们各自的转换器启动，通过确定电源和电动机电压之间的相位误差来获得与供电电源的同步，从而获得 源和负载锁相环。 该相位误差通过简单增益传递，并与速度调节器设定值相加，调速器设定值现在变为变频器频率调节器，标称设定值为供电电源频率。 通过将源电压的绝对值与积分电动机电压的适当比例的绝对值进行比较，得到电源和电动机之间的电压幅度误差，该误差信号输入到同步或异步电动机控制器中的通量调节器 代替正常输入时不同步。
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