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公开(公告)号：US4680526A
公开(公告)日：1987-07-14
申请号：US766945
申请日：1985-08-19
CPC分类号： H02P21/04
摘要： In induction motor driven by a voltage-type inverter, the torque current component is determined by detecting a primary current flowing to the induction motor. On the basis of the torque current component determined, the output voltage and frequency of the voltage-type inverter are controlled. Additionally, the rotational speed of the induction motor is estimated on the basis of the detected torque current component and the speed of the induction motor is controlled such that the estimated speed signal coincides with a speed command signal.
摘要翻译： 在由电压型逆变器驱动的感应电动机中，通过检测流向感应电动机的一次电流来确定转矩电流分量。 基于确定的转矩电流分量，控制电压型逆变器的输出电压和频率。 此外，感应电动机的转速基于检测到的转矩电流分量来估计，并且控制感应电动机的速度，使得估计的速度信号与速度指令信号一致。
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公开(公告)号：US5016158A
公开(公告)日：1991-05-14
申请号：US544392
申请日：1990-06-27
CPC分类号： H02M7/49
摘要： A parallel multi-inverter system including a plurality of inverters connected in parallel to each other through one or more parallel reactors, wherein output voltages of the inverters are controlled on the basis of the polarity of an output voltage command signal and a comparison result between a value obtained by converting the output voltage command signal into a positive one and a carrier signal to reduce harmonic components of the line-to-line voltages, and further two different switching modes to set the output voltage of the system zero are equally used to prevent a circulating current from flowing through the parallel reactors during each zero potential period of the output voltage of the system.
摘要翻译： 一种并联多逆变器系统，包括通过一个或多个并联电抗器彼此并联连接的多个逆变器，其中基于输出电压命令信号的极性和在一个或多个并联电抗器之间的比较结果来控制反相器的输出电压 通过将输出电压指令信号转换成正极和载波信号而获得的值，以减少线间电压的谐波分量，并且另外两种不同的开关模式用于设定系统零的输出电压同样用于防止 在系统的输出电压的每个零电势周期期间流过并联电抗器的循环电流。
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公开(公告)号：US4125796A
公开(公告)日：1978-11-14
申请号：US820649
申请日：1977-08-01
CPC分类号： H02P25/03
摘要： A control apparatus for use in a synchronous machine having a field and an armature windings, one of the windings being provided on a stator and the other winding on a rotor comprises a thyristor converter for feeding the armature winding with electric power. A rotor position detector, an actual current detector and a rotating speed detector are provided. A current pattern signal is produced on the basis of the rotor position signal and the rotating speed signal and is compared with the actual armature current. A gate pulse generator controls the thyristors of the thyristor converter in accordance with the difference between the current pattern signal and the actual armature current signal. A phase shifter is provided for shifting the current pattern signal. A phase detector detects the phase difference between the armature current supplied for the armature winding and the rotor position, and the phase shifting operation of the phase shifter is controlled in accordance with an output from the phase detector.
摘要翻译： 一种在具有场和电枢绕组的同步电机中使用的控制装置，其中一个绕组设置在定子上，另一个绕组在转子上包括用于向电枢绕组供电的晶闸管转换器。 提供转子位置检测器，实际电流检测器和转速检测器。 基于转子位置信号和转速信号产生电流模式信号，并与实际电枢电流进行比较。 门脉冲发生器根据电流模式信号和实际电枢电流信号之间的差异来控制晶闸管转换器的晶闸管。 提供了一个移相器来移动当前的图形信号。 相位检测器检测提供给电枢绕组的电枢电流与转子位置之间的相位差，并且根据相位检测器的输出来控制移相器的相移操作。
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4.发明授权
公开(公告)号：US5029288A
公开(公告)日：1991-07-02
申请号：US340681
申请日：1989-04-20
申请人： Yuzuru Kubota , Toshiaki Okuyama
发明人： Yuzuru Kubota , Toshiaki Okuyama
摘要： A method and apparatus for operating a variable speed power generation system in which the generated output of an induction generator is adjusted by controlling current in the secondary side of the induction generator. Rotation speeds of the induction generator coupled to a prime mover are detected, a secondary current command for controlling a difference between a detected rotation speed and a speed command to be zero is generated, and current in the secondary side of the induction generator is controlled on the basis of the secondary current command. In addition, the generated output of the induction generator is sequentially detected in order that a command value of the speed command is sequentially changed when a detected generated output shows a tendency to increase and, when a detected generated output shifts from an increasing tendency to a decreasing tendency, the command value of the speed command is once changed to a lower speed value and thereafter returned to a higher speed value, thereby maximizing efficiency of the variable speed power generation system and reducing costs.
摘要翻译： 一种用于操作变速发电系统的方法和装置，其中通过控制感应发电机的次级侧的电流来调节感应发电机的产生的输出。 检测到耦合到原动机的感应发电机的转速，产生用于将检测到的转速和速度指令之间的差异控制为零的二次电流指令，将感应发电机次级侧的电流控制在 二次电流指令的基础。 此外，感应发电机的产生的输出被顺序地检测，以便当检测到的产生的输出显示出增加的趋势时，速度指令的指令值被顺序地改变，并且当检测到的产生的输出从增加趋势转移到 速度指令的指令值一度改变为较低速度值，然后返回到较高速度值，从而使变速发电系统的效率最大化并降低成本。
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5.发明授权
公开(公告)号：US4486824A
公开(公告)日：1984-12-04
申请号：US356923
申请日：1982-03-10
申请人： Toshiaki Okuyama , Yuzuru Kubota , Hiroshi Nagase
发明人： Toshiaki Okuyama , Yuzuru Kubota , Hiroshi Nagase
CPC分类号： H02M7/757
摘要： In a converter comprising gate turn-off thyristors, a current at an A.C. part of the converter is detected and a polarity of the detected current and a magnitude of the detected current is checked to determine if it is below a holding current level for maintaining the gate turn-off thyristors on. If the detected current is below the holding current level, a pulse width modulated signal is produced as a gate signal. If the detected level is above the holding current level, a short duration pulse synchronized with a rise and a fall of the pulse width modulated signal is produced as the gate signal. The gate signal is supplied to only those of the gate turn-off thyristors which correspond to the polarity of the detected current.
摘要翻译： 在包括栅极截止晶闸管的转换器中，检测转换器的AC部分的电流，检测检测到的电流的极性和检测到的电流的大小，以确定其是否低于保持电流水平 门极关断晶闸管。 如果检测到的电流低于保持电流电平，则产生脉宽调制信号作为门信号。 如果检测到的电平高于保持电流电平，则产生与脉宽调制信号的上升和下降同步的短持续时间脉冲作为门信号。 栅极信号仅供给与检测到的电流的极性对应的栅极截止晶闸管的栅极信号。
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公开(公告)号：US4344025A
公开(公告)日：1982-08-10
申请号：US70725
申请日：1979-08-29
CPC分类号： H02J3/1892 , H02P23/08 , H02P25/26 , H02P27/06 , H02P21/09 , H02P2201/13
摘要： A motor control system controls to be constant a reactive power consumed by a motor load equipment having a motor to be driven by power supplied from an AC power source and a couple of thyristor converters for regulating the power supplied to the motor. To this end, the motor control system is comprised of a reactor power detector for detecting the reactive power of the motor load equipment, a command circuit for issuing a command to specify the rated reactive power consumed in the rated load running of the motor load equipment, and a reactive power control unit which receives an output signal from the command circuit and an output signal from the reactive power detector to produce a firing phase command signal depending on a difference between them. The firing phase command signal from the reactive power control unit is applied to an automatic pulse phase shifter to control the firing phase of the thyristor converters.
摘要翻译： 电动机控制系统控制由电动机负载设备消耗的无功功率的恒定，所述电动机负载设备具有通过从AC电源提供的电力驱动的电动机和用于调节供应到电动机的功率的一对晶闸管转换器。 为此，电动机控制系统包括用于检测电动机负载设备的无功功率的电抗器功率检测器，用于发出用于指定在电动机负载设备的额定负载运行中消耗的额定无功功率的命令的指令电路 以及无功功率控制单元，其接收来自命令电路的输出信号和来自无功功率检测器的输出信号，以根据它们之间的差异产生触发相位命令信号。 来自无功功率控制单元的点火相位指令信号被施加到自动脉冲移相器以控制晶闸管转换器的点火相位。
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公开(公告)号：US4206395A
公开(公告)日：1980-06-03
申请号：US882763
申请日：1978-03-02
申请人： Toshiaki Okuyama , Hiroshi Nagase , Yuzuru Kubota , Takamasa Hori
发明人： Toshiaki Okuyama , Hiroshi Nagase , Yuzuru Kubota , Takamasa Hori
CPC分类号： H02P25/26 , H02J3/1892
摘要： An AC motor has polyphase stator windings connected to an AC bus and has polyphase rotor windings connected directly or through impedances to capacitors. The capacitances of the capacitors are selected so as to be such that the AC motor exhibits a small input impedance for a specific frequency to be eliminated, thereby preventing the power factor from being since the fundamental frequency is not affected in any way under a light load. As a result, harmonics can be eliminated without causing any excessive AC source voltage.
摘要翻译： AC电动机具有连接到AC总线的多相定子绕组，并且具有直接或通过阻抗连接到电容器的多相转子绕组。 电容器的电容被选择为使得AC电动机对于要消除的特定频率表现出小的输入阻抗，从而防止因为在轻负载下以任何方式影响基频的功率因数 。 因此，可以消除谐波而不引起任何过大的AC电源电压。
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公开(公告)号：US4088932A
公开(公告)日：1978-05-09
申请号：US778097
申请日：1977-03-16
申请人： Toshiaki Okuyama , Yuzuru Kubota
发明人： Toshiaki Okuyama , Yuzuru Kubota
CPC分类号： H02P25/03
摘要： A control system for a commutatorless motor, comprising a synchronous motor having a polyphase armature winding and a field winding; a frequency converter for supplying the armature winding with alternating current having a variable frequency; an angular position detector for detecting the angular position signal corresponding to the angular position of the rotor of the synchronous motor; a speed control circuit for delivering a current reference signal having an amplitude corresponding to the deviation of the actual speed of the synchronous speed from the reference speed; a current control circuit for controlling the amplitude of the output current of the frequency converter in accordance with the current reference signal and for maintaining the amplitude of the output current of the frequency converter constant in the range where the torque reference signal assumes a value smaller than the intermittent threshold of the armature current; and a phase control circuit for controlling the phase of the output current of the frequency converter in accordance with the angular position signal and for rendering the phase of the output current of the frequency converter variable in accordance with the current reference signal in the region where the torque reference signal takes a value smaller than the intermittent threshold of the armature current.
摘要翻译： 一种用于无换向电动机的控制系统，包括具有多相电枢绕组和励磁绕组的同步电动机; 用于向电枢绕组提供具有可变频率的交流电的频率转换器; 用于检测与同步电动机的转子的角位置相对应的角位置信号的角位置检测器; 速度控制电路，用于传送具有对应于同步速度的实际速度与参考速度的偏差相对应的振幅的电流参考信号; 电流控制电路，用于根据当前参考信号控制变频器的输出电流的幅度，并且用于在转矩参考信号的值小于等于的范围内将变频器的输出电流的幅度保持恒定。 电枢电流的间歇阈值; 以及相位控制电路，用于根据角位置信号来控制变频器的输出电流的相位，并根据当前的参考信号使变频器的输出电流的相位变化， 转矩参考信号取小于电枢电流的间歇阈值的值。
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公开(公告)号：US4625272A
公开(公告)日：1986-11-25
申请号：US582569
申请日：1984-02-17
申请人： Toshiaki Okuyama , Yuzuru Kubota
发明人： Toshiaki Okuyama , Yuzuru Kubota
CPC分类号： H02M7/1557 , H02M7/12
摘要： The input terminals of a PWM converter are connected to the a-c power supply via a reactor. A capacitor C as well as a load 11 are connected to the d-c output terminals of the PWM converter. An apparent phase of the power supply voltage E is shifted depending upon the difference between a d-c voltage detected across both terminals of the capacitor and a set voltage, and a control signal for the PWM converter is prepared, with the shifted voltage as a reference. When the detected voltage is greater than the set voltage, the PWM converter is so controlled as to be operated with a lagging power factor, and the a-c voltage at the input terminals of the PWM converter becomes smaller than the power supply voltage. Accordingly, the d-c voltage can be maintained at a value smaller than the set voltage.
摘要翻译： PCT No.PCT / JP83 / 00197 Sec。 371日期1984年2月17日 102（e）日期1984年2月17日PCT提交1983年6月17日PCT公布。 WO84 / 00086 PCT出版物 日期1984年1月5日。PWM转换器的输入端子通过电抗器连接到a-c电源。 电容器C以及负载11连接到PWM转换器的d-c输出端子。 电源电压E的表观相位根据电容器的两端检测到的d-c电压与设定电压之间的差异而偏移，PWM转换器的控制信号以变换的电压为基准。 当检测到的电压大于设定电压时，PWM转换器被控制为以滞后功率因数运行，并且PWM转换器的输入端的a-c电压变得小于电源电压。 因此，d-c电压可以保持在小于设定电压的值。
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公开(公告)号：US4295084A
公开(公告)日：1981-10-13
申请号：US045849
申请日：1979-06-05
CPC分类号： H02P25/03
摘要： A control apparatus of a synchronous motor having armature windings and perpendicular field windings comprises a frequency converter of a cycloconverter which converts the frequency of an alternating current and supplies the converted current to the armature windings of the synchronous motor. On a shaft of the synchronous motor are installed a speed detector, a position detector, and a speed instruction circuit. The frequency converter is controlled in accordance with the outputs of the speed detector, the position detector and the speed instruction circuit. An alternating current excites the field windings, so that a field of magnetic force is rotationally generated. The direction of the magnetic field is determined depending upon the output of the speed detector.
摘要翻译： 具有电枢绕组和垂直场绕组的同步电动机的控制装置包括一个循环变频器的变频器，该变频器转换交流电流的频率并将转换的电流提供给同步电动机的电枢绕组。 在同步电机的轴上安装有速度检测器，位置检测器和速度指令电路。 变频器根据速度检测器，位置检测器和速度指令电路的输出进行控制。 交流电激励励磁绕组，从而旋转地产生磁力场。 磁场的方向取决于速度检测器的输出。
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