公开(公告)号：US06344726B1

公开(公告)日：2002-02-05

申请号：US09550252

申请日：2000-04-14

申请人： Kazuaki Tobari ,  Toshiaki Okuyama

发明人： Kazuaki Tobari ,  Toshiaki Okuyama

IPC分类号： H02P124

CPC分类号： H02P21/04 ,  H02P21/18 ,  H02P21/24 ,  H02P21/26 ,  H02P2207/01

摘要： If a speed instruction value is less than a predetermined value, the output current of a power-conversion unit is controlled to be larger than a current value in an ordinary no-load operation, or a frequency instruction value is calculated based on a speed instruction value in place of an estimated speed.

摘要翻译： 如果速度指令值小于预定值，则在正常空载操作中将功率转换单元的输出电流控制为大于当前值，或者基于速度指令计算频率指令值 值代替估计的速度。

公开(公告)号：US06300741B1

公开(公告)日：2001-10-09

申请号：US09654088

申请日：2000-09-01

申请人： Toshiaki Okuyama

发明人： Toshiaki Okuyama

IPC分类号： H02P7628

CPC分类号： H02P21/09 ,  H02P21/34

摘要： A system for controlling the speed of an induction motor by controlling an output voltage and an output frequency of a power inverter in accordance with a speed command includes a computing unit 10 for determining a slip-frequency computed value &ohgr;s2; an adder 11 for outputting a slip-frequency estimated value &ohgr;s{circumflex over ( )}; an adder 12 for adding &ohgr;s{circumflex over ( )} to a speed command value &ohgr;r* and outputting &ohgr;1*; a d-axis current commanding unit 14 for outputting a d-axis current command value id* which is a value greater than a normal value; an amplifier 15 for outputting a voltage command value ed*; a gain commanding unit 16 for commanding a gain Gd; a q-axis current limiter 17 for controlling a q-axis current iq substantially to zero in a zero speed range; and a gain commanding unit 18 for commanding a gain Gq.

摘要翻译： 用于通过根据速度指令控制功率逆变器的输出电压和输出频率来控制感应电机的速度的系统包括用于确定滑差频率计算值omegas2的计算单元10; 用于输出滑差频率估计值的加法器， 加法器12，用于将omegas {circumflex over（）}加到速度指令值ω* *并输出ω1*; d轴电流指令单元14，用于输出大于正常值的d轴电流指令值id *; 用于输出电压指令值ed *的放大器15; 用于指令增益Gd的增益指令单元16; q轴电流限制器17，用于在零速度范围内控制q轴电流iq基本上为零; 以及用于指令增益Gq的增益指令单元18。

公开(公告)号：US5808442A

公开(公告)日：1998-09-15

申请号：US724230

申请日：1996-09-27

申请人： Osamu Kaite ,  Toshiaki Okuyama

发明人： Osamu Kaite ,  Toshiaki Okuyama

IPC分类号： H02J7/02 ,  H01M10/44

CPC分类号： H01M10/441

摘要： In the method of charging a plurality of lithium ion rechargeable batteries, if another battery is attached during battery charging, open circuit voltages of those respective batteries are measured and compared. When the open circuit voltage of the battery attached later is greater than that of the battery being charged, charging of the previously attached battery is suspended and the battery attached later is given priority and charged. When the open circuit voltage of the battery being charged is greater than that of the battery attached later, the battery being charged is given priority and charged.

摘要翻译： 在对多个锂离子可再充电电池进行充电的方法中，如果在电池充电期间连接另一电池，则测量和比较各个电池的开路电压。 当以后安装的电池的开路电压大于正在充电的电池的开路电压时，先前连接的电池的充电被暂停，并且稍后安装的电池被优先给予充电。 当充电电池的开路电压大于稍后安装的电池的开路电压时，给予充电的电池优先并充电。

公开(公告)号：US4792742A

公开(公告)日：1988-12-20

申请号：US46157

申请日：1987-05-05

申请人： Noboru Fujimoto ,  Toshiaki Okuyama

发明人： Noboru Fujimoto ,  Toshiaki Okuyama

IPC分类号： H02P27/06 ,  H02P21/00 ,  H02P21/14 ,  H02P27/04 ,  H02P5/40

CPC分类号： H02P21/16 ,  H02P2207/01

摘要： A motor current flowing through an inverter-driven induction motor is detected when voltage is applied to the induction motor by the inverter operated under a certain condition on the basis of the vector control. The detected current is converted to two components of a current vector in a d-q coordinate system. Motor constants are calculated on the basis of a component in the d-coordinate axis of a voltage reference set for creating the certain condition and the two converted components of the motor current detected at that time, and control constants in a vector control apparatus for the inverter-driven induction motor are set or adjusted in accordance with the calculated motor constants. According to this invention, the control constants in the vector control apparatus can be easily set or adjusted.

摘要翻译： 在通过矢量控制的基础上，在一定条件下运行的变频器对感应电动机施加电压时，检测到流经逆变器驱动感应电动机的电动机电流。 检测到的电流被转换成d-q坐标系中的电流矢量的两个分量。 基于用于创建一定条件的电压基准设定的d坐标轴中的分量和当时检测到的电动机电流的两个转换分量的电动机常数以及矢量控制装置中的控制常数来计算电动机常数 变频器驱动的感应电动机根据计算的电动机常数进行设定或调整。 根据本发明，可以容易地设置或调整矢量控制装置中的控制常数。

公开(公告)号：US4764859A

公开(公告)日：1988-08-16

申请号：US68068

申请日：1987-06-30

申请人： Takayuki Matsui ,  Toshiaki Okuyama

发明人： Takayuki Matsui ,  Toshiaki Okuyama

IPC分类号： H02M5/27 ,  H02M5/45 ,  H02M5/257

CPC分类号： H02M5/4505

摘要： A current-circulating cycloconverter includes a positive converter and a negative converter connected in anti-parallel with each other through a DC reactor. A load is connected to an intermediate tap of the DC reactor. When a load current flowing to the load is smaller than a predetermined value, a circulating current flowing through the positive and negative converters is held at a minimum required value. A circulating current is caused to additively flow for canceling a voltage drop produced across the DC reactor when the load current exceeds the predetermined value.

摘要翻译： 电流循环循环变换器包括通过DC电抗器彼此反并联连接的正转换器和负转换器。 负载连接到直流电抗器的中间抽头。 当流向负载的负载电流小于预定值时，流过正转换器和负转换器的循环电流保持在最小要求值。 当负载电流超过预定值时，引起循环电流相加流动以消除跨过DC电抗器产生的电压降。

公开(公告)号：US4680526A

公开(公告)日：1987-07-14

申请号：US766945

申请日：1985-08-19

申请人： Toshiaki Okuyama ,  Takayuki Matsui ,  Noboru Fujimoto ,  Yuzuru Kubota

发明人： Toshiaki Okuyama ,  Takayuki Matsui ,  Noboru Fujimoto ,  Yuzuru Kubota

IPC分类号： H02P21/14 ,  H02P5/40

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。

公开(公告)号：US4562397A

公开(公告)日：1985-12-31

申请号：US634538

申请日：1984-07-26

申请人： Yukio Kitabayashi ,  Noriyoshi Takahashi ,  Toshiaki Okuyama ,  Masatoshi Watanabe ,  Hitoshi Ohura

发明人： Yukio Kitabayashi ,  Noriyoshi Takahashi ,  Toshiaki Okuyama ,  Masatoshi Watanabe ,  Hitoshi Ohura

IPC分类号： H02K17/14 ,  H02K17/16 ,  H02K17/30 ,  H02P7/40

CPC分类号： H02K17/30 ,  H02K17/14 ,  H02K17/16

摘要： A squirrel-cage induction motor comprises a stator having a stator core and stator windings divided into first and second coils with different numbers of poles, and a squirrel-cage rotor including a rotor core and a plurality of rotor conductors embedded in the vicinity of the surface of the core. The number of the rotor conductors is the same as the average number of poles of the first and second stator coils, which conductors are arranged equidistantly along the periphery. This induction motor, with the construction of a squirrel-cage rotor, permits a variable speed operation without using any special device.

摘要翻译： 鼠笼式感应电动机包括具有定子铁心的定子和被分成具有不同数量的极数的第一和第二线圈的定子绕组，以及包括转子铁芯和多个转子导体的鼠笼式转子， 表面的核心。 转子导体的数量与第一和第二定子线圈的平均极数相同，这些导体沿着周边等距离布置。 该感应电动机具有鼠笼式转子的结构，可以在不使用任何特殊装置的情况下进行变速操作。

公开(公告)号：US4503375A

公开(公告)日：1985-03-05

申请号：US582542

申请日：1984-02-22

申请人： Toshiaki Okuyama

发明人： Toshiaki Okuyama

IPC分类号： H02P21/00 ,  H02P21/08 ,  H02P21/14 ,  H02P27/04 ,  H02P5/40

CPC分类号： H02P21/09 ,  H02P21/00 ,  H02P2207/01

摘要： An induction motor is driven by a power inverter. A torque current command is determined on the basis of a difference between a speed command and an actual speed value. A slip frequency command corresponding to a magnitude of the torque current command is determined, and the slip frequency command and the actual speed value are added together to produce a primary frequency command. An oscillator generates 2-phase sinusoidal signals at a frequency coincident with the primary frequency command which are respectively in phase with the flux axis of the induction motor and 90.degree. out of phase with respect to the flux axis. A torque current pattern signal is produced on the basis of the torque current command and the 90.degree.-out-of-phase sinusoidal signal, and an exciting current pattern signal is produced on the basis of an exciting current setting value and the in-phase sinusoidal signal. Output current of the power inverter is controlled by the two current pattern signals. On the other hand, motor voltage of the induction motor is detected, and there are produced a parallel component and an orthogonal component of the motor voltage with respect to an exciting current component which is determined in a control system for the motor voltage. The primary frequency command is corrected by the parallel component of the motor voltage, and the exciting current setting value is corrected by the orthogonal component of the motor voltage.

摘要翻译： 感应电动机由电力变频器驱动。 基于速度指令与实际速度值的差来确定转矩电流指令。 确定与转矩电流指令的大小对应的滑差频率指令，并将转差频率指令和实际速度值相加在一起以产生主频率指令。 振荡器以与主频率指令一致的频率产生2相正弦信号，它们分别与感应电机的磁通轴相位相对于磁通轴相差90°。 基于转矩电流指令和90°正相正弦信号产生转矩电流模式信号，并且基于励磁电流设定值和同相产生励磁电流模式信号 正弦信号。 电力变换器的输出电流由两个电流模式信号控制。 另一方面，检测感应电动机的电动机电压，并且相对于在用于电动机电压的控制系统中确定的励磁电流分量产生电动机电压的并联分量和正交分量。 通过电动机电压的并联分量校正主频率指令，并且通过电动机电压的正交分量来校正励磁电流设定值。

公开(公告)号：US4277735A

公开(公告)日：1981-07-07

申请号：US2799

申请日：1979-01-11

申请人： Toshiaki Okuyama ,  Yuzuru Kubota ,  Hiroshi Nagase

发明人： Toshiaki Okuyama ,  Yuzuru Kubota ,  Hiroshi Nagase

IPC分类号： H02P27/06 ,  H02P6/00 ,  H02P27/16 ,  H02P7/36

CPC分类号： H02P21/00

摘要： An induction motor has a multi-phase primary winding (stator winding) and a multi-phase secondary winding (rotor winding) which are connected to each other in opposite phase relation. The both windings are fed with variable frequency A.C. current from a common frequency converter. A position sensor for sensing a rotor position is mounted on the induction motor. The position signal of the position sensor is in phase with an air gap flux between the primary winding and the secondary winding. Magnitude of a motor current is controlled in accordance with a torque command signal indicative of an error between a speed command signal and a speed feedback signal and with a voltage command signal for determining a terminal voltage, and a phase difference of the motor current relative to the position signal is controlled in accordance with the torque command signal and the voltage command signal. In this manner, the torque generated can be varied while maintaining amount of air gap flux and hence the terminal voltage constant.

摘要翻译： 感应电动机具有以相反相位相互连接的多相初级绕组（定子绕组）和多相次级绕组（转子绕组）。 两个绕组均馈入来自公共变频器的可变频率A.C.电流。 用于感测转子位置的位置传感器安装在感应电动机上。 位置传感器的位置信号与初级绕组和次级绕组之间的气隙磁通同相。 根据表示速度指令信号和速度反馈信号之间的误差的转矩指令信号和用于确定端子电压的电压指令信号以及电动机电流的相位差相对于电动机电流的相位差来控制电动机电流的大小 根据转矩指令信号和电压指令信号控制位置信号。 以这种方式，可以在保持气隙磁通量并因此端子电压恒定的同时改变产生的转矩。

公开(公告)号：US3949283A

公开(公告)日：1976-04-06

申请号：US443141

申请日：1974-02-15

申请人： Toshiaki Okuyama ,  Hiroyuki Okamoto ,  Takamasa Hori ,  Hiroshi Hayashida ,  Mitsuyuki Honbu

发明人： Toshiaki Okuyama ,  Hiroyuki Okamoto ,  Takamasa Hori ,  Hiroshi Hayashida ,  Mitsuyuki Honbu

IPC分类号： H02P6/20 ,  H02P25/02 ,  H02K29/00

CPC分类号： H02P25/03

摘要： A control system for a brushless motor is disclosed which comprises an AC power supply, a rectifier circuit including controlled rectifier elements for converting the alternating current supplied by the AC power supply into a direct current, an inverter circuit including controlled rectifier elements for converting the direct current produced by the rectifier circuit into an alternating current, a motor driven by the inverter circuit and a position detector for detecting a signal representing rotational positions of the motor. The controlled rectifier elements of the inverter circuit are fired in predetermined sequence in response to detection signals from the position detector, while the DC output current of the rectifier is continually controlled at each commutation of the inverter circuit at low motor speeds. A predetermined number of signals in synchronism with each commutation of the inverter circuit are included in one cycle, so that the DC output current of the rectifier circuit is controlled for continual operation by the use of signals with different delay times behind the aforementioned signals concurrent with the commutation of the inverter.

摘要翻译： 公开了一种用于无刷电动机的控制系统，其包括AC电源，包括用于将由AC电源提供的交流电转换成直流电的可控整流元件的整流器电路，包括可控整流元件的逆变器电路，用于将直流 由整流电路产生的交流电流，由逆变器电路驱动的电动机和用于检测表示电动机的旋转位置的信号的位置检测器。 逆变器电路的可控整流元件响应于来自位置检测器的检测信号以预定顺序被点火，同时整流器的直流输出电流在低电动机速度下在逆变器电路的每次换向下被连续地控制。 在一个周期中包括与逆变器电路的每次换向同步的预定数量的信号，从而通过使用具有与上述信号同时的不同延迟时间的信号来控制整流电路的直流输出电流以进行连续操作 逆变器的换向。