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公开(公告)号：US4099108A
公开(公告)日：1978-07-04
申请号：US716205
申请日：1976-08-20
申请人： Tadashi Okawa , Yasuo Matsuda , Hiroshi Hayashida , Takeo Maeda
发明人： Tadashi Okawa , Yasuo Matsuda , Hiroshi Hayashida , Takeo Maeda
CPC分类号： H02P27/06 , H02P2201/03 , H02P27/047
摘要： An induction motor is operated by a power supply of variable voltage and variable frequency. The voltage and frequency of the variable-voltage variable-frequency power supply is changed by a control circuit to accelerate or decelerate the induction motor. For slowly controlling the speed of the induction motor, the ratio of the output voltage to the output frequency of the variable-voltage variable-frequency power supply is maintained substantially constant. The control circuit includes a voltage correcting means which, in response to a command for sudden acceleration or deceleration of the speed of the motor, corrects the output voltage of the power supply in accordance with the acceleration or deceleration rate and the prevailing magnitude of the output frequency of the variable-voltage variable-frequency power supply.
摘要翻译： 感应电动机由可变电压和可变频率的电源操作。 可变电压可变频率电源的电压和频率由控制电路改变，以加速或减速感应电动机。 为了缓慢地控制感应电动机的速度，可变电压可变频率电源的输出电压与输出频率的比例保持基本恒定。 控制电路包括电压校正装置，响应于马达速度的突然加速或减速的命令，根据加速或减速率和输出的主要幅度来校正电源的输出电压 可变电压可变频率电源的频率。
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公开(公告)号：US4276589A
公开(公告)日：1981-06-30
申请号：US27098
申请日：1979-04-04
CPC分类号： H02M7/49
摘要： At least one smoothing reactor is connected to the positive terminal of a DC source. A first interphase reactor has its one end connected to the other end of the smoothing reactor. A second interphase reactor is connected to the negative terminal of the DC source. Each of the first and second interphase reactors has first and second terminals at the other end thereof. Connected between the first terminals of the first and second interphase reactors is a first inverter comprising three main valves on each side of the positive and negative terminals, i.e., a total of six main valves each having a control gate and forming a first three-phase bridge. Also connected between the second terminals of the first and second interphase reactors is a second inverter comprising three main valves arranged on each side of the positive and negative terminals, i.e., a total of six main valves each having a control gate and forming a second three-phase bridge. The three-phase output terminals of the first and second inverters are respectively connected in common to a load to supply first-phase, second-phase and third-phase output currents to the load. A control unit applies control gate pulses to the control gates of the positive-terminal-side and negative-terminal-side main valves of the first and second inverters in the order of the first, second and third phases to shape the waveform of each output current to the load into a rectangular waveform. The control unit controls the first and second inverters in such a manner that the current valves of two currents which flow to the main valves of the first and second inverters having the same phase and polarity includes ranges in which the currents periodically assume the same current value.
摘要翻译： 至少一个平滑电抗器连接到直流电源的正极端子。 第一相间反应器的一端连接到平滑反应器的另一端。 第二相间电抗器连接到直流电源的负极端子。 第一和第二相间反应器中的每一个在其另一端具有第一和第二端子。 连接在第一和第二相间电抗器的第一端子之间的是第一逆变器，其包括在正端子和负端子的每一侧上的三个主阀，即总共六个主阀，每个具有控制栅极并形成第一三相 桥。 还连接在第一和第二相间电抗器的第二端子之间的是第二逆变器，其包括布置在正端子和负端子的每一侧上的三个主阀，即总共六个主阀，每个主阀具有控制门并形成第二三通 相桥。 第一和第二逆变器的三相输出端分别共同连接到负载，以向负载提供第一相，第二相和第三相输出电流。 控制单元按照第一相，第二相和第三相的顺序向第一和第二反相器的正端侧和负端侧主控制阀的控制栅施加控制栅脉冲，以形成每个输出的波形 电流到负载成矩形波形。 控制单元以这样的方式控制第一和第二逆变器，使得流过具有相同相位和极性的第一和第二反相器的主阀的两个电流的电流阀包括电流周期性地具有相同电流值的范围 。
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公开(公告)号：US4188663A
公开(公告)日：1980-02-12
申请号：US877982
申请日：1978-02-15
申请人： Tadashi Okawa , Mitsuyuki Honbu , Yasuo Matsuda
发明人： Tadashi Okawa , Mitsuyuki Honbu , Yasuo Matsuda
CPC分类号： H02M5/4505 , H02H3/24 , H02H7/12
摘要： A current source inverter having a converter for changing alternating current into direct current, an inverter for changing the d.c. output of the converter into alternating current, and a reactor interposed between the converter and the inverter comprises power failure detecting means for detecting the power failure of the a.c. input of the converter. The power failure detecting means is constructed of square wave generator circuits which generate square waves when voltages in respective polarities of respective phases of the a.c. input exist, an adder which adds the outputs of said square wave generator circuits, and a comparator which compares an output of said adder with a predetermined value and which provides an output when the adder output is below the predetermined value. Both terminals of the reactor of the current source inverter are substantially short-circuited by the output of said power failure detecting means, thereby to prevent occurrence of an overvoltage at the time of the power failure of the a.c. input of the converter.
摘要翻译： 一种电流源逆变器，具有用于将交流电变换成直流电的转换器，用于改变直流电的逆变器。 所述转换器输出为交流电，并且置于所述转换器和所述逆变器之间的电抗器包括用于检测所述变换器与所述逆变器的电源故障的电力故障检测装置。 转换器的输入。 电源故障检测装置由方波发生器电路构成，当电流处于各个相位的相应极性时，产生方波。 输入存在，加法器，其将所述方波发生器电路的输出相加，比较器将所述加法器的输出与预定值进行比较，并且当加法器输出低于预定值时提供输出。 电流源逆变器的电抗器的两端都由所述电源故障检测装置的输出端短路，从而防止在交流电源断电时发生过电压。 转换器的输入。
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公开(公告)号：US4384248A
公开(公告)日：1983-05-17
申请号：US160174
申请日：1980-06-17
申请人： Yasuo Matsuda , Kazuo Honda , Takeo Maeda
发明人： Yasuo Matsuda , Kazuo Honda , Takeo Maeda
CPC分类号： G01R31/025 , H02H7/1225
摘要： Shortcircuit in an arm including a series connection of GTO's and reactors of an inverter is detected by sensing a voltage across the reactor. In one method, the shortcircuit in the arm is detected when voltages are coincidently applied to a P-line arm reactor and an N-line arm reactor for a predetermined time period. In another method, it is detected when an integrated value of a voltage across at least one of the reactors exceeds a predetermined level.
摘要翻译： 通过感测反应堆两端的电压来检测包括GTO和逆变器的反应器的串联连接的臂中的短路。 在一种方法中，当预定时间段内的电压一致地施加到P线臂式电抗器和N型臂式电抗器时，检测到臂中的短路。 在另一种方法中，当跨过至少一个电抗器的电压的积分值超过预定电平时检测。
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公开(公告)号：US3997825A
公开(公告)日：1976-12-14
申请号：US512924
申请日：1974-10-07
申请人： Kunio Miyasita , Hironori Okuda , Yasuyuki Sugiura , Takeo Maeda , Yasuo Matsuda , Kazuo Honda
发明人： Kunio Miyasita , Hironori Okuda , Yasuyuki Sugiura , Takeo Maeda , Yasuo Matsuda , Kazuo Honda
摘要： In the control of a synchronous motor driven by a power converter of voltage source type, the phase of the current flowing into the motor is detected and gate signals are produced on the basis of the phase of the current, so that the output frequency of the power converter is controlled by the gate signals so as to control the motor.
摘要翻译： 在由电压源式电力转换器驱动的同步电动机的控制中，检测流入电动机的电流的相位，并根据电流的相位产生门信号，使得输出频率 功率转换器由门信号控制，以控制电机。
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公开(公告)号：US4156899A
公开(公告)日：1979-05-29
申请号：US800533
申请日：1977-05-25
申请人： Yasuo Matsuda , Takeo Maeda , Takuji Matsumura
发明人： Yasuo Matsuda , Takeo Maeda , Takuji Matsumura
CPC分类号： H02M7/5152
摘要： A current source inverter circuit having a plurality of branches, each branch consisting of a pair of thyristors adapted to be switched on alternatingly for power supply from a D. C. power source and diodes connected in series to the thyristors. To each connection point between a thyristor and a diode, there is connected one end of one of a plurality of commutating capacitors, while the other ends of the capacitors are connected in common. An auxiliary charging source is provided between the common connection of the commutating capacitors and one of the terminals of the D. C. source for performing an auxiliary charging for each commutating capacitor through a respective thyristor. Between one of the terminals of the D. C. power source and the common connection of the commutating capacitors, a series circuit consisting of a diode and an auxiliary D. C. source is provided constituting a by-pass for the charging voltage of the commutating capacitor when the associated thyristor is in the ON state.
摘要翻译： 具有多个分支的电流源逆变器电路，每个分支由一对晶闸管组成，适于交替地接通来自D.C。电源的电源和与晶闸管串联连接的二极管。 对于晶闸管和二极管之间的每个连接点，连接多个换向电容器中的一个的一端，而电容器的另一端共同连接。 在整流电容器的公共连接和D.C源的一个端子之间提供辅助充电源，用于通过相应的晶闸管对每个换向电容器进行辅助充电。 在直流电源的一个端子和换向电容器的公共连接之间，构成由二极管和辅助直流电源组成的串联电路，构成绕组电容器的充电电压的旁路，当相关的晶闸管 处于ON状态。
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公开(公告)号：US4012679A
公开(公告)日：1977-03-15
申请号：US543306
申请日：1975-01-23
申请人： Yasuo Matsuda , Takeo Maeda , Kouzou Watanabe , Kazuo Honda , Hironori Okuda , Kunio Miyashita , Yasuyuki Sugiura
发明人： Yasuo Matsuda , Takeo Maeda , Kouzou Watanabe , Kazuo Honda , Hironori Okuda , Kunio Miyashita , Yasuyuki Sugiura
CPC分类号： H02P1/52 , H02P25/024
摘要： A method and an apparatus for controlling the operation of the synchronous motor are disclosed in which the synchronous motor is started with a starting power supply and operated with a steadying power supply. The starting power supply is adapted to alternately repeat acceleration and deceleration of the synchronous motor in the neighborhood of the frequency thereby to bring the synchronous motor into the point where the synchronous motor is in synchronism with the steadying power supply. The starting power supply comprises a current control circuit and a phase angle control circuit, which circuits control the motor current in such a manner as to prevent the voltage drop due to the synchronous reactance of the motor from exceeding the induced voltage of the motor, while at the same time controlling the power factor angle to be in the range from a lead 90.degree. to the angle corresponding to a maximum output point produced by said motor current.
摘要翻译： 公开了一种用于控制同步电动机的操作的方法和装置，其中同步电动机由启动电源启动并以稳定电源运行。 起动电源适于在频率附近交替地重复同步电动机的加速和减速，从而使同步电动机进入同步电动机与稳定电源同步的点。 启动电源包括电流控制电路和相位角控制电路，其电路控制电动机电流，以防止由于电动机的同步电抗引起的电压下降超过电动机的感应电压，同时 同时将功率因数角控制在从导线90°到对应于由所述电动机电流产生的最大输出点的角度的范围内。
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8.发明申请Motor having cores structure wherein magnetic circuit is designed in three dimensional configuration 审中-公开具有磁芯结构的电动机，其中磁路设计成三维结构公开(公告)号：US20060113849A1
公开(公告)日：2006-06-01
申请号：US11326457
申请日：2006-01-06
申请人： Yuji Enomoto , Noriaki Hino , Shouichi Kawamata , Kazumasa Ide , Yasuo Matsuda , Toshihiko Sakai
发明人： Yuji Enomoto , Noriaki Hino , Shouichi Kawamata , Kazumasa Ide , Yasuo Matsuda , Toshihiko Sakai
CPC分类号： H02K1/08 , H02K1/02 , H02K15/022 , H02K41/03
摘要： In order to provide a motor characterized by a high level of efficiency equal to or better than that of using the silicon steel plate, achieved by easy production method and reduced core loss, which result from reduction in the manpower for production by using the sintered metal or powdered iron core in at least one of the stator and rotor, the present invention provides a motor comprising a stator and a rotor wherein either one of said stator or rotor has a magnet, and the other has a magnetic substance. This motor is further characterized in that the main magnetic flux flowing between the stator and rotor changes in the three-dimensional directions according to the magnetic structure of this motor, and at least part of said magnetic substance is composed of an aggregate of magnetic powder.
摘要翻译： 为了提供一种以与使用硅钢板相同或更好的高效率的电动机来实现的，其通过易于制造的方法实现，并且由于通过使用烧结金属的生产人力的减少而导致的铁损减少 或定子和转子中的至少一个中的铁芯，本发明提供一种电动机，其包括定子和转子，其中所述定子或转子中的任一个具有磁体，而另一个具有磁性物质。 该电动机的特征还在于，根据该电动机的磁性结构，在定子和转子之间流动的主磁通量在三维方向上发生变化，并且至少一部分磁性物质由磁粉的集合体构成。
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公开(公告)号：US6004675A
公开(公告)日：1999-12-21
申请号：US937953
申请日：1992-09-01
CPC分类号： C03C25/106 , Y10T428/2933 , Y10T428/2949 , Y10T428/2964
摘要： A coated glass fiber for light transmission consisting of a glass fiber for light transmission and at least one coating layer made of a UV-curing resin, wherein an outermost layer of the coating layer is made of a UV-curing resin having a Young's modulus of at least 100 kg/mm.sup.2 and a change of a cure shrinkage degree of 1% or less after a Young's modulus reaches one tenth of an end Young's modulus, which has good lateral pressure characteristics and low transmission loss.
摘要翻译： 一种用于透光的涂覆玻璃纤维，由用于透光的玻璃纤维和由UV固化树脂制成的至少一个涂层组成，其中涂层的最外层由具有杨氏模量的UV固化树脂制成 至少100kg / mm2，并且杨氏模量达到杨氏模量的十分之一后具有1％以下的固化收缩率，具有良好的横向压力特性和低的传输损失。
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公开(公告)号：US5891570A
公开(公告)日：1999-04-06
申请号：US837103
申请日：1997-04-14
CPC分类号： G02B6/02038 , B29C47/0026 , B29D11/00721 , G02B1/045 , G02B1/048 , B29C47/00 , B29C47/0021 , Y10T428/2933 , Y10T428/2991
摘要： A process and an apparatus for producing a preform for plastic optical fiber having a refractive index distribution in which the refractive index is gradually decreased from the center of the preform toward the outer periphery thereof, by depositing a deposition layer comprising a polymer A (refractive index: N.sub.a) and a refractive index modifier having a refractive index different from that of the polymer A onto a surface of a rod member rotating about an axis thereof, by use of vapor-phase deposition based on a CVD (Chemical Vapor Deposition) process, or a coating process. A plastic optical fiber preform including deposition layers having a gradually decreasing refractive index distribution is formed by changing the mixing ratio between the polymer A and the refractive index modifier constituting the deposition layer.
摘要翻译： 一种用于制造塑料光纤预制棒的方法和装置，其具有折射率分布，折射率从预制棒的中心朝向其外周逐渐减小，通过沉积包含聚合物A的沉积层（折射率 ：Na）和折射率调节剂，其折射率与聚合物A的折射率不同，通过使用基于CVD（化学气相沉积）方法的气相沉积，在围绕其轴线旋转的杆构件的表面上， 或涂层工艺。 通过改变聚合物A和构成沉积层的折射率调节剂之间的混合比，形成包括具有逐渐降低的折射率分布的沉积层的塑料光纤预制件。
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