公开(公告)号：US4837492A

公开(公告)日：1989-06-06

申请号：US169977

申请日：1988-03-18

申请人： Ryoichi Kurosawa ,  Kouzou Kawata

发明人： Ryoichi Kurosawa ,  Kouzou Kawata

IPC分类号： G01D5/244

CPC分类号： G01D5/244

摘要： To the primary winding of a synchronous electric machine, a polyphase a.c. excitation signal from an excitation circuit is applied. Thus, an induced voltage signal, the phase of which varies by an angle proportional to a rotational position of a rotary body, is produced on the secondary winding of the synchro. A phase difference produced between the a.c. excitation signal and the induced voltage signal is detected by a phase difference detecting circuit. This phase difference detecting circuit detects not only a phase difference itself, but also detects the time at which the phase difference has been detected. On the basis of the phase difference and the time thus detected, a predictive computation circuit predicts a rotational position of the rotary body at an arbitrary time. In addition, a rate multiplier circuit for setting a value corresponding to a change in a predicted rotational position and an up/down counter circuit for counting the output thereof are further added, thereby making it possible to provide the output of the up/down counter circuit as a rotational position.

公开(公告)号：US5446363A

公开(公告)日：1995-08-29

申请号：US109501

申请日：1993-08-20

申请人： Ryoichi Kurosawa ,  Hajime Yamamoto

发明人： Ryoichi Kurosawa ,  Hajime Yamamoto

IPC分类号： H02P21/00 ,  H02P21/08 ,  H02P21/14 ,  H02P27/04 ,  H02P27/06 ,  H02P5/40

CPC分类号： H02P21/09 ,  H02P2207/01

摘要： There is disclosed a method of controlling an induction motor, which controls a primary current of the induction motor on the basis of a magnetic flux component current command i.sub.1d *, a torque component current command i.sub.1q *, and a slip frequency command .omega..sub.s which are orthogonal component command values of the primary current of the induction motor, wherein control parameters R.sub.2 *, l.sub.2 * and M* set in accordance with a secondary resistance R.sub.2, a secondary leakage inductance l.sub.2 and a mutual inductance M of the induction motor are used to calculate the magnetic flux component current command i.sub.1d *, the torque component current command i.sub.1q * and the slip frequency command .omega..sub.s. Even in the case where the mutual inductance M of the induction motor varies, if the coefficient 1/M* is assumed as a magnetic saturation function given by a gap magnetic flux, the influence of the magnetic saturation can be canceled.

摘要翻译： 公开了一种控制感应电动机的方法，该感应电动机基于磁通分量电流指令i1d *，转矩分量电流指令i1q *和转差频率指令ωs来控制感应电动机的初级电流 使用感应电动机的初级电流的正交分量指令值，其中根据次级电阻R2设定的控制参数R2 *，I2 *和M *，感应电动机的次级漏电感12和互感M被用于 计算磁通分量电流指令i1d *，转矩分量电流指令i1q *和滑差频率指令ωs。 即使在感应电动机的互感M变化的情况下，如果系数1 / M *被假设为由间隙磁通量给出的磁饱和函数，则可以消除磁饱和度的影响。

公开(公告)号：US4527120A

公开(公告)日：1985-07-02

申请号：US529935

申请日：1983-09-08

申请人： Ryoichi Kurosawa

发明人： Ryoichi Kurosawa

IPC分类号： G01P3/44 ,  G01P3/489 ,  G01P15/00 ,  H03K13/02 ,  G05B1/03

CPC分类号： G01P15/00 ,  G01P3/489

摘要： A system for converting mechanical movement of a body under detection to a digital signal comprises a synchro generator having a primary and a secondary windings movable relative to each other, one of the windings capable of being coupled to said body, an exciting circuit for providing multiple-phase exciting currents to the primary winding at a frequency higher than the frequency corresponding to the maximum speed of the body, and a phase-locked-loop control circuit responsive to the output of the secondary winding for generating a frequency-multiplied digital signal at a frequency equal to the product of the frequency of an AC signal induced in the secondary winding and a predetermined factor.

摘要翻译： 用于将检测中的身体的机械运动转换为数字信号的系统包括同步发生器，其具有可相对于彼此运动的初级和次级绕组，能够耦合到所述主体的一个绕组，用于提供多个 相对于初级绕组的相位激励电流的频率高于对应于机体的最大速度的频率;以及锁相环控制电路，响应于次级绕组的输出，以产生倍频数字信号， 频率等于在次级绕组中感应的AC信号的频率与预定因子的乘积。

公开(公告)号：US4259629A

公开(公告)日：1981-03-31

申请号：US937823

申请日：1978-08-29

申请人： Ryoichi Kurosawa

发明人： Ryoichi Kurosawa

IPC分类号： H02P21/00 ,  H02P27/04 ,  H02P7/36

CPC分类号： H02P21/00

摘要： The control device is provided with a frequency converter for feeding electric power to an induction motor and a compensating circuit for compensating for the delay of the response of the field flux to a control target value. The second transfer function of the compensating circuit is selected such that the resultant of the first transfer function of the field flux with respect to a control target and the second transfer function would be a constant.

摘要翻译： 控制装置设置有用于将电力馈送到感应电动机的频率转换器和用于补偿场磁通的响应延迟到控制目标值的补偿电路。 选择补偿电路的第二传递函数，使得场通量相对于控制目标和第二传递函数的第一传递函数的结果将是常数。

公开(公告)号：US06552462B2

公开(公告)日：2003-04-22

申请号：US09871891

申请日：2001-06-04

申请人： Kazuto Sakai ,  Masanori Arata ,  Mikio Takabatake ,  Yoshio Hashidate ,  Ryoichi Kurosawa ,  Yosuke Nakazawa ,  Tadashi Tokumasu

发明人： Kazuto Sakai ,  Masanori Arata ,  Mikio Takabatake ,  Yoshio Hashidate ,  Ryoichi Kurosawa ,  Yosuke Nakazawa ,  Tadashi Tokumasu

IPC分类号： H02K2112

CPC分类号： H02K1/246 ,  H02K1/2766 ,  H02K1/2773 ,  H02K21/46 ,  H02K2213/03

摘要： A reluctance type rotating machine includes a stator 1 having armature windings 2 arranged on an inner periphery of the stator 1, a rotor 3 having a magnetic unevenness in the circumferential direction and a plurality of permanent magnets 6 arranged for negating the armature windings' flux passing between adjoining poles. Each magnet 6 is magnetized in a direction different from a direction to facilitate the rotor's magnetization. A magnetic portion 7 is provided between the pole and the interpole of the rotor 3. Owing to the provision of the magnetic portion 7, when the armature windings are not excited, more than 30% of the permanent magnets' flux is distributed in the rotor 3. Similarly, when the machine is loaded, the permanent magnets' interlinkage flux is more than 10% of composite interlinkage flux composed of armature current and the permanent magnets.

公开(公告)号：US4698581A

公开(公告)日：1987-10-06

申请号：US903957

申请日：1986-09-05

申请人： Takeo Shimamura ,  Hiroshi Uchino ,  Ryoichi Kurosawa

发明人： Takeo Shimamura ,  Hiroshi Uchino ,  Ryoichi Kurosawa

IPC分类号： H02J3/18 ,  G05F1/70

CPC分类号： H02J3/1864 ,  Y02E40/12

摘要： In a reactive power compensation apparatus for compensating reactive power generated by a load connected to an AC power supply system, dual phase current signals obtained by dual phase-converting the load currents and unit dual phase voltage signals synchronized with voltages of an AC main line connected to the load are used, and arithmetic operations thereof are performed to separately detect an in-phase reactive component signal and opposite phase component signals of the load currents. Current commands are generated on the basis of the separately detected signals, thereby controlling the reactive power compensation apparatus on the basis of the current commands.

摘要翻译： 在用于补偿由连接到AC电源系统的负载产生的无功功率的无功功率补偿装置中，通过双相转换负载电流和单元双相电压信号获得的双相电流信号与连接的AC主线的电压同步 使用负载，并且执行其算术运算以分别检测负载电流的同相无功分量信号和相反相位分量信号。 基于单独检测的信号产生电流指令，从而根据当前命令控制无功补偿装置。

公开(公告)号：US4652989A

公开(公告)日：1987-03-24

申请号：US770071

申请日：1985-08-28

申请人： Ryoichi Kurosawa ,  Takeo Shimamura

发明人： Ryoichi Kurosawa ,  Takeo Shimamura

IPC分类号： H02P27/16 ,  H02M5/27 ,  H02M5/257

CPC分类号： H02M5/273

摘要： A frequency converter apparatus is provided with a frequency converter coupled to an AC power supply and to a load. The frequency converter converts an AC input with a given input frequency into an AC output with a given output frequency. The frequency converter apparatus is further provided with a frequency reference circuit and a harmonic cancel circuit. The frequency reference circuit supplies a reference signal to the frequency converter so that the output frequency of the AC output follows the reference signal. The harmonic cancel circuit supplies a harmonic cancelling signal to the frequency reference circuit so that the prescribed order of the higher harmonic of the AC output is substantially cancelled according to the frequency, magnitude and phase of the harmonic cancelling signal.

摘要翻译： 变频器装置具有耦合到AC电源和负载的变频器。 变频器将具有给定输入频率的交流输入转换为具有给定输出频率的交流输出。 变频器装置还具有频率参考电路和谐波消除电路。 频率参考电路向变频器提供参考信号，使得AC输出的输出频率遵循参考信号。 谐波消除电路向频率参考电路提供谐波消除信号，使得根据谐波消除信号的频率，幅度和相位基本上消除AC输出的高次谐波的规定次序。

公开(公告)号：US4517636A

公开(公告)日：1985-05-14

申请号：US512004

申请日：1983-07-08

申请人： Hiroshi Uchino ,  Kihei Nakajima ,  Ryoichi Kurosawa

发明人： Hiroshi Uchino ,  Kihei Nakajima ,  Ryoichi Kurosawa

IPC分类号： H02M7/515 ,  H02M7/525

CPC分类号： H02M7/5155 ,  H02M7/525

摘要： An inverter apparatus includes a plurality of gate-turn-off thyristors being provided at each end of thyristor-branches, and bias sources or capacitors connected in parallel with the gate-turn-off thyristors for applying reverse voltage to the thyristor-branches when the gate-turn-off thyristor is turned off.

摘要翻译： 逆变器装置包括在晶闸管分支的两端设置的多个栅极截止晶闸管，以及与栅极截止晶闸管并联连接的偏置源或电容器，用于在晶闸管支路施加反向电压时 门极关断晶闸管关闭。

公开(公告)号：US4282570A

公开(公告)日：1981-08-04

申请号：US142458

申请日：1980-04-21

申请人： Ryoichi Kurosawa ,  Toshiaki Kudor

发明人： Ryoichi Kurosawa ,  Toshiaki Kudor

IPC分类号： G05F1/10 ,  H02M7/12 ,  H02M7/155 ,  H02P25/02 ,  H02P13/26

CPC分类号： H02P25/03

摘要： In a method and apparatus for controlling an output current of a controlled rectifier connected to an AC power supply, by firing angle control of the controlled rectifier in accordance with the result of comparison of a value corresponding to the rectifier output current with a predetermined reference value, an average value of a detected rectifier output current over a period having a length equal to an integer multiple of the average period of the firing angle control is calculated, and a signal for firing the controlled rectifier is produced at an angle determined in accordance with comparison of the calculated average value with the reference value.

摘要翻译： 在用于控制连接到AC电源的可控整流器的输出电流的方法和装置中，通过根据与整流器输出电流相对应的值与预定参考值的比较结果的可控整流器的触发角度控制 计算长度等于触发角控制的平均周期的整数倍的周期内检测到的整流器输出电流的平均值，并且以与根据下述方式确定的角度产生用于点火可控整流器的信号 计算平均值与参考值的比较。

公开(公告)号：US07262982B2

公开(公告)日：2007-08-28

申请号：US11503135

申请日：2006-08-14

申请人： Ryoichi Kurosawa

发明人： Ryoichi Kurosawa

IPC分类号： H02M1/06 ,  H02M7/521 ,  H02P5/34

CPC分类号： H02J3/1807 ,  H02M7/521 ,  H02P25/024 ,  H02P25/22 ,  Y02E40/30

摘要： A power conversion apparatus is formed by connecting unit communication-assisting means in series between an alternating-current terminal incorporated in a conventional current-type power conversion apparatus, and an alternating-current load. The communication-assisting means includes reverse-blocking-type self-commutated devices and a capacitor. By controlling the switching of the reverse-blocking-type self-commutated devices, a voltage is generated at the capacitor and additionally used for a power supply commutation operation or load commutation operation. By virtue of this structure, the power conversion apparatus can easily provide a large capacity (high voltage, large current), and can be improved in power factor. Further, the structure enables the number of required fundamental elements to be reduced, and hence enables the power conversion apparatus to be produced easily at low cost.

摘要翻译： 电力转换装置通过将单元通信辅助装置串联连接在并入常规电流型电力转换装置的交流电源和交流负载之间而形成。 通信辅助装置包括反向阻断型自换向器件和电容器。 通过控制反向阻断型自换向器件的开关，在电容器处产生电压，并且还用于电源换向操作或负载换向操作。 通过这种结构，功率转换装置可以容易地提供大容量（高电压，大电流），并且可以提高功率因数。 此外，该结构能够减少所需的基本元件的数量，因此能够以低成本容易地制造电力转换装置。