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公开(公告)号：US4549258A
公开(公告)日：1985-10-22
申请号：US471704
申请日：1983-03-03
摘要： Herein disclosed is an inverter device which includes two or more groups of unit switching circuits connected in parallel with a d.c. power source and each having gate turn-off thyristors connected in series with each other. Further inclusive are current balancing reactors, which are respectively connected between the series nodes of the gate turn-off thyristors of the respective groups, and a.c. output terminals respectively leading out from intermediate points of the aforementioned reactors.
摘要翻译： 这里公开了一种逆变器装置，其包括与直流电路并联连接的两组或多组单位开关电路。 电源，并且每个具有彼此串联连接的栅极截止晶闸管。 还包括电流平衡电抗器，它们分别连接在相应组的栅极截止晶闸管的串联节点之间，以及a.c. 输出端子分别从上述反应器的中间点引出。
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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：US4420718A
公开(公告)日：1983-12-13
申请号：US326809
申请日：1981-12-02
申请人： Keijiro Sakai , Yasuo Matsuda , Mitsuyuki Honbu
发明人： Keijiro Sakai , Yasuo Matsuda , Mitsuyuki Honbu
CPC分类号： H02P27/06 , H02P27/047
摘要： An control system for an induction motor driven by an AC output of variable frequency and voltage produced from an inverter which converts DC power obtained by a converter through conversion of AC power having constant voltage and constant frequency. The system comprises means for estimating the power factor of the induction motor from an input current to the inverter, means for controlling the voltage of the AC output from the inverter when the estimated power factor is outside a predetermined range, and means for restricting the control of the AC output voltage to prevent the ratio between the AC output voltage and the AC output frequency from exceeding a predetermined range.
摘要翻译： 一种感应电动机的控制系统，由变频器产生的可变频率和电压的交流输出驱动，该转换器通过转换具有恒定电压和恒定频率的交流电源转换由转换器获得的直流电力。 该系统包括用于从输入电流向逆变器估计感应电动机的功率因数的装置，用于在估计功率因数超出预定范围时控制来自逆变器的AC输出的电压的装置，以及用于限制控制的装置 的交流输出电压，以防止AC输出电压和AC输出频率之间的比例超过预定范围。
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公开(公告)号：US4599685A
公开(公告)日：1986-07-08
申请号：US694668
申请日：1985-01-24
申请人： Mitsuyuki Hombu , Shigeta Ueda , Katsunori Suzuki , Yasuo Matsuda
发明人： Mitsuyuki Hombu , Shigeta Ueda , Katsunori Suzuki , Yasuo Matsuda
CPC分类号： H02M7/155 , H02M1/0845 , H02M7/1626
摘要： Disclosed is a control circuit for a power converter apparatus using self-extinction devices as switching devices, in which turn on and turn off operations of the self-extinction devices are controlled by gate pulses which have been subject to pulse width modulation with a pulse train having a pulse width which is sinusoidally varied, and, at the same time, the self-extinction devices in same phase are made conductive in a predetermined period corresponding to an output voltage reference value to make an output of the power converter apparatus be in a shorted state in the sense of DC current to thereby control the output of the power converter apparatus.
摘要翻译： 公开了一种使用自消光装置作为开关装置的功率转换装置的控制电路，其中自消除装置的导通和关断操作由已经经过脉冲串脉冲宽度调制的栅极脉冲控制 具有正弦变化的脉冲宽度，同时相同相位的自消光装置在对应于输出电压基准值的预定周期内导通，使得功率转换装置的输出为 在DC电流的意义上的短路状态，从而控制电力转换装置的输出。
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6.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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9.发明授权
公开(公告)号：US5851666A
公开(公告)日：1998-12-22
申请号：US775881
申请日：1997-01-02
CPC分类号： G02B6/02038 , B29C47/0023 , B29D11/00721 , G02B1/045 , G02B1/048 , B29C47/00 , B29C47/0014 , Y10T428/2929 , Y10T428/2942 , Y10T428/2947
摘要： A process for producing a preform for elastic 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 an inner surface of a hollow cylindrical 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 comprising deposition layers having a gradually increasing 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： 一种制造弹性光纤预成型体的方法，其特征在于，通过沉积包含聚合物A（折射率：Na）的沉积层，使折射率分布从预成型件的中心向其外周逐渐减小， 以及通过使用基于CVD（化学气相沉积）工艺的气相沉积，将折射率与聚合物A的折射率不同的折射率调节剂转印到围绕其轴线旋转的中空圆柱形构件的内表面上，或 涂层工艺。 通过改变构成沉积层的聚合物A和折射率调节剂之间的混合比，形成包含逐渐增加的折射率分布的沉积层的塑料光纤预制件。
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公开(公告)号：US5835656A
公开(公告)日：1998-11-10
申请号：US902286
申请日：1997-07-29
CPC分类号： G01M11/088 , C03C25/12 , G02B6/02395
摘要： A coated optical fiber comprising a light-transmitting fiber and a resin coating layer disposed on the outer periphery of the light-transmitting fiber is formed, an external flaw is imparted to the surface of the resin coating layer while running the coated optical fiber, and then the coated optical fiber is subjected to the measurement of a tensile breaking strength thereof. At this time, the fiber having a strength retention ratio R.sub.S =S.sub.A /S.sub.0 of 0.98 or more, wherein S.sub.A is the median value of the tensile breaking strength after the provision of the external flaw, and S.sub.0 is the median value of the tensile breaking strength before the provision of the external flaw, is selected as a non-defective product.
摘要翻译： 在透光性纤维的外周形成包含透光性纤维和树脂被覆层的被覆光纤，在涂布光纤的行进时，向树脂被覆层的表面施加外部缺陷， 然后对被覆光纤进行拉伸断裂强度的测定。 此时，强度保持率RS = SA / S0为0.98以上的纤维，其中SA为提供外部缺陷后的拉伸断裂强度的中值，S0为拉伸断裂的中值 在提供外部缺陷之前的强度被选为无缺陷产品。
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