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41. 发明授权

US4884184A Control apparatus for cascaded converter circuit 失效
标题翻译：用于级联转换器电路的控制装置
公开(公告)号：US4884184A
公开(公告)日：1989-11-28
申请号：US151902
申请日：1988-02-03
申请人： Takayuki Matsui , Toshiaki Okuyama , Mitsugu Matsutake , Junichi Takahashi , Masami Ito
发明人： Takayuki Matsui , Toshiaki Okuyama , Mitsugu Matsutake , Junichi Takahashi , Masami Ito
IPC分类号： H02M7/17 , H02M1/14 , H02M5/27 , H02M7/162 , H02P27/06
CPC分类号： H02P27/06 , H02M7/162
摘要： A converter circuit includes three-phase unit converters connected in cascade in two stages for supplying electric power to a load. In a region in which the converter output voltage ratio is small, the firing phases of both converters are so set that a phase difference of 120.degree. makes appearance therebetween, while in a region in which the converter output voltage ratio is large, the firing phases are so set as to have a phase difference of 60.degree. therebetween, whereby an angular difference of 90.degree. to 30.degree. is caused to occur constantly between the phases of voltage ripple components of the unit converters. Power factor of a power supply source is improved while ripple in the output voltage of the converter circuit is reduced.

42. 发明授权

US4629959A Method and apparatus for controlling PWM inverter 失效
标题翻译：控制PWM逆变器的方法和装置
公开(公告)号：US4629959A
公开(公告)日：1986-12-16
申请号：US766686
申请日：1985-08-19
申请人： Toshiaki Okuyama , Hiroshi Nagase
发明人： Toshiaki Okuyama , Hiroshi Nagase
IPC分类号： H02P27/08 , H02M7/48 , H02M7/527 , H02M7/5395 , H02P7/42
CPC分类号： H02M7/527 , H02M7/48
摘要： An induction motor is driven by a PWM inverter including switching elements such as gate turn-off thyristors of Graetz connection. Turn-on of the PWM inverter is controlled by PWM pulse signals generated from a pulse width modulator. The pulse width modulator includes comparators having a hysteresis characteristic which generate the PWM pulse signals on the basis of the magnitude and polarity of current errors between current command pattern signals and signals indicative of detected output currents of the PWM inverter. A signal generator generates an AC signal which is applied to the comparators so that the PWM pulse signals generated from the comparators act to increase the effective value of the neutral voltage of the output of the PWM inverter.
摘要翻译：感应电动机由包括诸如Graetz连接的关断晶闸管等开关元件的PWM逆变器驱动。 PWM逆变器的导通由脉宽调制器产生的PWM脉冲信号控制。脉宽调制器包括具有滞后特性的比较器，其基于电流指令模式信号与表示PWM逆变器的检测输出电流的信号之间的电流误差的大小和极性产生PWM脉冲信号。信号发生器产生施加到比较器的AC信号，使得从比较器产生的PWM脉冲信号用于增加PWM逆变器的输出的中性点电压的有效值。

43. 发明授权

US4459534A Method for controlling induction motor and apparatus therefor 失效
标题翻译：用于控制感应电动机的方法及其装置
公开(公告)号：US4459534A
公开(公告)日：1984-07-10
申请号：US381294
申请日：1982-05-24
申请人： Hiroshi Nagase , Toshiaki Okuyama
发明人： Hiroshi Nagase , Toshiaki Okuyama
IPC分类号： H02P21/00 , H02P21/08 , H02P27/04 , H02P5/40
CPC分类号： H02P21/08
摘要： A control apparatus for induction motor comprising an induction motor driven by a power converter, a circuit for producing an effective current command value for the induction motor on the basis of a speed command value and an actual speed value, a circuit for producing a slip frequency corresponding to the magnitude of the effective current command value, and a circuit for producing a primary frequency command value on the basis of the slip frequency and the actual speed value, the output of the power converter being controlled on the basis of the frequency command value, the effective current command value and a given exciting current or voltage command value, wherein the control apparatus further comprises a current component detecting circuit for detecting the primary current of the induction motor so as to produce in the form of a DC signal an actual effective current value which is an effective component of the detected primary current, a first current control circuit for producing an effective voltage command value in the form of a DC signal on the basis of the actual effective current value and the effective current command value, and a converter controlling circuit for controlling the power converter to produce output on the basis of the effective voltage command value, the frequency command value, and a given exciting voltage command value in the form of a DC signal. The current component detecting circuit preferably further produces in the form of a DC signal an actual exciting current value which is an exciting component of the detected primary current, and the controlling apparatus may further comprise a second current controlling circuit for producing the exciting voltage command value on the basis of the actual exciting current value and the predetermined exciting current command value.
摘要翻译：一种用于感应电动机的控制装置，包括由功率转换器驱动的感应电动机，用于根据速度指令值和实际速度值产生用于感应电动机的有效电流指令值的电路，用于产生转差频率的电路对应于有效电流指令值的大小，以及基于转差频率和实际速度值产生主频率指令值的电路，根据频率指令值控制功率转换器的输出有效电流指令值和给定的励磁电流或电压指令值，其中所述控制装置还包括电流分量检测电路，用于检测所述感应电动机的初级电流，以便以DC信号的形式产生实际有效的作为检测到的初级电流的有效成分的电流值，用于产生的第一电流控制电路基于实际有效电流值和有效电流指令值，以直流信号的形式施加有效电压指令值;以及转换器控制电路，用于基于有效电压指令控制功率转换器产生输出值，频率指令值以及DC信号形式的给定激励电压指令值。电流分量检测电路优选进一步以DC信号的形式产生作为检测到的一次电流的激励分量的实际励磁电流值，并且控制装置还可以包括用于产生激励电压指令值的第二电流控制电路基于实际励磁电流值和预定的励磁电流指令值。

44. 发明授权

US4330741A Electric control apparatus of induction motor 失效
标题翻译：感应电动机电控装置
公开(公告)号：US4330741A
公开(公告)日：1982-05-18
申请号：US158390
申请日：1980-06-11
申请人： Hiroshi Nagase , Toshiaki Okuyama , Yuzuru Kubota , Katsunori Suzuki
发明人： Hiroshi Nagase , Toshiaki Okuyama , Yuzuru Kubota , Katsunori Suzuki
IPC分类号： H02P27/04 , H02P27/06 , H02P5/40
CPC分类号： H02P27/06 , H02P27/045 , H02P27/048 , H02P2207/01 , H02P27/047
摘要： An electric control apparatus of an induction motor is provided with a flux current controller for controlling the flux current of the motor and a secondary current controller for controlling the secondary current of the motor. A pulse generator circuit is disposed to control the amplitude, frequency and phase angle of the primary current of the motor according to output signals of the flux current controller and secondary current controller. The primary voltage and frequency to be applied to the motor are controlled by pulse signals from the pulse generator circuit. This pulse generator circuit includes a primary voltage setting zone for setting the primary voltage of the induction motor and a primary voltage detecting zone for detecting the primary voltage of the motor. A voltage regulator is disposed to put out a signal equivalent to the change of the secondary resistance of the induction motor according to the deviation of the voltage between the primary voltage detecting zone and the primary voltage setting zone. A correcting controlling zone is disposed in the pulse generator circuit to perform a controlling action of correcting the frequency, which is one of the control objects of the pulse generator circuit, according to the output signal of the voltage regulator.
摘要翻译：感应电动机的电气控制装置设置有用于控制电动机的磁通电流的磁通电流控制器和用于控制电动机的次级电流的二次电流控制器。设置脉冲发生器电路，以根据磁通电流控制器和二次电流控制器的输出信号来控制电动机的初级电流的振幅，频率和相位角。施加到电动机的初级电压和频率由来自脉冲发生器电路的脉冲信号控制。该脉冲发生器电路包括用于设定感应电动机的初级电压的初级电压设定区域和用于检测电动机初级电压的初级电压检测区域。电压调节器被设置为根据初级电压检测区域和初级电压设定区域之间的电压的偏差来输出与感应电动机的次级电阻的变化相当的信号。校正控制区设置在脉冲发生器电路中，以根据电压调节器的输出信号执行校正频率的控制动作，该频率是脉冲发生器电路的控制对象之一。

45. 发明授权

US4240020A Control system for suppressing torque ripple in synchronous motor 失效
标题翻译：同步电机转矩脉动抑制控制系统
公开(公告)号：US4240020A
公开(公告)日：1980-12-16
申请号：US920699
申请日：1978-06-30
申请人： Toshiaki Okuyama , Yuzuru Kubota , Hiroshi Nagase , Katsunori Suzuki
发明人： Toshiaki Okuyama , Yuzuru Kubota , Hiroshi Nagase , Katsunori Suzuki
IPC分类号： H02P27/06 , H02P6/06 , H02P25/02 , H02P7/28
CPC分类号： H02P25/03
摘要： A synchronous motor having multi-phase armature windings and a field winding is drived by a frequency converter. Actual torque is determined from a sinusoidal position signal representative of rotational position of the synchronous motor and the armature current. The actual torque value is compared with a command torque signal, whereby the armature current is controlled in dependence on difference or deviation resulting from the comparison thereby to cancel the torque ripple. Torque ripple can thus be suppressed to a satisfactory degree even at a low rotation speed of the synchronous motor.
摘要翻译：具有多相电枢绕组和励磁绕组的同步电动机由变频器驱动。从表示同步电动机的旋转位置和电枢电流的正弦位置信号确定实际转矩。将实际转矩值与指令转矩信号进行比较，由此根据比较产生的差异或偏差来控制电枢电流，从而抵消转矩脉动。因此即使在同步电动机的低转速下也能够将扭矩波动抑制到令人满意的程度。

46. 发明授权

US4132931A Control system for a.c. motors 失效
标题翻译：交通控制系统电机
公开(公告)号：US4132931A
公开(公告)日：1979-01-02
申请号：US829000
申请日：1977-08-30
申请人： Toshiaki Okuyama , Yuzuru Kubota , Hiroshi Nagase
发明人： Toshiaki Okuyama , Yuzuru Kubota , Hiroshi Nagase
IPC分类号： H02P27/16 , H02P6/06 , H02P7/46
CPC分类号： H02K29/08 , H02K11/33 , H02P21/00 , H02P2207/076
摘要： A control system for an a.c. motor having a polyphase primary winding (stator winding) and a corresponding polyphase secondary winding. The primary and the secondary windings are supplied with current from different frequency converters provided separately for each of the windings. The alternating currents flowing through the primary and the secondary windings are in opposite phase with each other. A position detector is provided for detecting the position of rotor of the a.c. motor. The magnitude of the primary current is controlled proportionally to a current reference signal in dependence on deviation of a speed feed-back signal from a speed reference signal, while the magnitude of the secondary current is controlled to a constant value. The phases of the primary and the secondary currents are controlled on the basis of the rotor position. The excitation frequencies for the primary and the secondary windings are set at a predetermined ratio between certain integers and a sum of these excitation frequencies is set to be equal to an angular frequency of rotating electrical angle of rotor.
摘要翻译： a.c.的控制系统电动机具有多相初级绕组（定子绕组）和相应的多相次级绕组。主绕组和次级绕组由不同的频率转换器供电，每个绕组分别提供。流过初级和次级绕组的交流电流彼此相反。提供位置检测器，用于检测交流电机的转子位置。发动机。根据速度反馈信号与速度参考信号的偏差，初级电流的幅度与电流参考信号成比例地控制，而次级电流的幅度被控制为恒定值。基于转子位置控制初级和次级电流的相位。初级绕组和次级绕组的励磁频率在某些整数之间设定为预定的比例，这些励磁频率之和被设定为等于转子旋转电角度的角频率。

47. 发明申请

US20070210741A1 DRIVER FOR INDUCTION MOTOR AND METHOD OF DRIVING THE SAME 有权
标题翻译：用于感应电机的驱动器及其驱动方法
公开(公告)号：US20070210741A1
公开(公告)日：2007-09-13
申请号：US11626941
申请日：2007-01-25
申请人： Koichiro Nagata , Toshiaki Okuyama , Kouki Yamamoto , Hiroyuki Tomita
发明人： Koichiro Nagata , Toshiaki Okuyama , Kouki Yamamoto , Hiroyuki Tomita
IPC分类号： H02P27/04
CPC分类号： H02P21/09 , H02P23/20 , H02P29/032
摘要： An object of the present invention is to provide a driver for an induction motor which performs an operation at an acceleration suitable for the magnitude of a load and is excellent in efficiency, without an acceleration failure.The driver for an induction motor includes a slip frequency estimate value arithmetic operation section 15 for arithmetically operating a slip frequency ωŝ of an induction motor 12, and a maximum torque generation slip arithmetic operation section 16 for arithmetically operating a slip frequency ωsmax at which a maximum torque is generated. When the slip frequency ωŝ exceeds a predetermined value ωsmaxTH(=0.96ωsmax, etc.) corresponding to the slip frequency ωsmax at which the maximum torque is generated, a speed change rate arithmetic operation section 17 and a speed change rate correcting section 18 reduce a rate of increase in a speed command ωr*.In addition, when the slip frequency approaches the maximum torque generation slip frequency too closely, the load concerned is judged to be overloaded, and an alarm is generated.
摘要翻译：本发明的目的是提供一种用于感应电动机的驱动器，其以适合于负载大小的加速度进行操作，并且效率优异，而没有加速失效。用于感应电动机的驱动器包括用于算术地操作感应电动机12的转差频率ω的滑差频率估计值算术运算部分15和用于对运算频率ωmax进行运算的最大转矩产生滑差算术运算部分16，产生扭矩。当滑差频率ωi超过与产生最大转矩的转差频率ωmax最大相对应的预定值ωmaxmax（=0.96ωmaxmax等）时，变速率算术运算部分17和变速率校正部分18减少速度指令omega *的增加速度。此外，当滑差频率接近最大转矩产生滑差频率时，判断为负载过大，产生报警。

48. 发明授权

US06704212B2 PWM inverter with long carrier wave insertion 有权
标题翻译： PWM逆变器具有长载波插入
公开(公告)号：US06704212B2
公开(公告)日：2004-03-09
申请号：US10222048
申请日：2002-08-16
申请人： Teiichi Furukawa , Masahiro Hiraga , Hiroyuki Tomita , Seiji Ishida , Toshiaki Okuyama
发明人： Teiichi Furukawa , Masahiro Hiraga , Hiroyuki Tomita , Seiji Ishida , Toshiaki Okuyama
IPC分类号： H02M112
CPC分类号： H02M7/53875 , H02M2001/0009
摘要： In calculation 3 phase AC output current Iu, Iv,Iw of an inverter based on the input DC current Idc of the inverter, it is difficult to detect the DC current Idc when the line-to-line voltage pulse width is narrow, thereby the DC current Idc pulse width becomes narrower. The frequency Fc of the carrier wave C is lowered in a phase whose line-to-line voltage is high, thereby the DC current Idc pulse width is set wider. As a result, the current detection is enabled.
摘要翻译：在逆变器的输入DC电流Idc的逆变器的3相AC输出电流Iu，Iv，Iw的计算中，当线间电压脉冲宽度窄时，难以检测直流电流Idc，直流电流Idc脉冲宽度变窄。载波C的频率Fc在线间电压高的相位下降，由此使直流电流Idc脉冲宽度变宽。结果，启用电流检测。

49. 发明授权

US06633495B2 DC apparatus and vehicle using the same 有权
标题翻译：直流设备和使用其的车辆
公开(公告)号：US06633495B2
公开(公告)日：2003-10-14
申请号：US10101529
申请日：2002-03-20
申请人： Seiji Ishda , Toshiaki Okuyama , Tetsuo Kojima , Kiyoshi Nakata , Akira Horie
发明人： Seiji Ishda , Toshiaki Okuyama , Tetsuo Kojima , Kiyoshi Nakata , Akira Horie
IPC分类号： H02M324
CPC分类号： H02M1/143
摘要： The voltage applied to a power converter is detected by a voltage detector, a function generator produces a voltage proportional to this detected voltage, and a high-pass filter detects an AC component superimposed on the voltage. An adder adds a bias voltage to this AC component, and an adder adds the output from the adder and the output from the function generator. The output from the adder is compared with a triangular wave produced from a rectangular wave generator, and a switching element is controlled to make switching operation according to the compared result. When a DC current is decreased by the AC component, a resistance current Ib is increased so that the AC components superimposed on the current and resistance current can be cancelled out.
摘要翻译：施加到功率转换器的电压由电压检测器检测，功能发生器产生与该检测电压成比例的电压，高通滤波器检测叠加在电压上的AC分量。加法器向该AC分量加上偏置电压，加法器将来自加法器的输出和来自函数发生器的输出相加。将来自加法器的输出与由矩形波发生器产生的三角波进行比较，并且根据比较结果控制开关元件进行开关操作。当直流电流被交流分量降低时，电阻电流Ib增加，从而可以消除叠加在电流和电阻电流上的交流分量。

50. 发明授权

US06556464B2 PWM converter system 失效
标题翻译： PWM转换器系统
公开(公告)号：US06556464B2
公开(公告)日：2003-04-29
申请号：US09956257
申请日：2001-09-20
申请人： Keijirou Sakai , Toshiaki Okuyama , Kinya Nakatsu , Seiji Ishida , Hiroshi Fujii , Junji Kato , Masahiro Hiraga
发明人： Keijirou Sakai , Toshiaki Okuyama , Kinya Nakatsu , Seiji Ishida , Hiroshi Fujii , Junji Kato , Masahiro Hiraga
IPC分类号： H02M75387
CPC分类号： H02M1/4233 , H02M1/4216 , H02M2001/0012 , Y02B70/126
摘要： A single-phase PWM converter system in accordance with the present invention employs a sample-and-hold circuit which samples and holds a direct current in the state wherein one of two-phase gate signals of a positive or negative side arm is ON and the other phase is OFF, determines the sign of an output of the sample-and-hold circuit according to the two-phase gate condition, detects a phase current at the input side of the converter, and controls a voltage at the input side of the converter so that the detected current value agrees with a power supply current command. Further, a three-phase PWM converter system in accordance with the present invention detects the effective current and the ineffective current of the power supply current from the direct current, and based on the values, controls the PWM converter so that the sine wave power supply current whose power supply power factor is 1 is provided.
摘要翻译：根据本发明的单相PWM转换器系统采用采样和保持电路，其采样和保持直流电流，其中正或负侧臂的两相门信号之一为ON，其他相位为OFF，根据两相门条件确定采样保持电路的输出的符号，检测转换器输入侧的相电流，并控制转换器的输入侧的电压转换器，使得检测到的电流值与电源电流指令一致。此外，根据本发明的三相PWM转换器系统从直流电流检测电源电流的有效电流和无效电流，并且基于在该值上，控制PWM转换器，使得提供功率因数为1的正弦波电源电流。

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