公开(公告)号：US4839406A

公开(公告)日：1989-06-13

申请号：US95676

申请日：1987-09-14

申请人： Osamu Nagura ,  Osamu Inoue ,  Yoshimasa Kamikuri ,  Norikazu Takizuka

发明人： Osamu Nagura ,  Osamu Inoue ,  Yoshimasa Kamikuri ,  Norikazu Takizuka

IPC分类号： C09D7/12 ,  C09D5/04

CPC分类号： C09D5/04

摘要： A fluidity controlling agent for paints is provided which comprises a product obtained by reacting paratoluidine and hexamethylene diisocyanate at a particular equivalent ratio (NH.sub.2 NCO) and gives thixotropic properties to the paint without sagging at a large coating film thickness.

摘要翻译： 提供了一种用于涂料的流动性控制剂，其包括通过使对甲苯胺和六亚甲基二异氰酸酯以特定的当量比（NH 2 NCO）反应而获得的产物，并且在大的涂膜厚度下对涂料产生触变性能而不下垂。

公开(公告)号：US4952852A

公开(公告)日：1990-08-28

申请号：US229995

申请日：1988-08-09

申请人： Akira Bando ,  Osamu Nagura ,  Keiji Saito ,  Ikuro Miyashita ,  Hashime Nagai ,  Hiroto Nakagawa ,  Yasuteru Oono

发明人： Akira Bando ,  Osamu Nagura ,  Keiji Saito ,  Ikuro Miyashita ,  Hashime Nagai ,  Hiroto Nakagawa ,  Yasuteru Oono

IPC分类号： H02P9/00 ,  H02H7/06

CPC分类号： H02H7/06

摘要： A generator-motor apparatus with economical protection measures for use in a variable speed pumping-up electric power plant, having a main transformer, a secondary winding of which is coupled to an electric power system, a power system breaker connected to a primary winding of the main transformer, a syncronizing breaker connected in series with the power system breaker, a generator-motor, a rotor of which is mechanically coupled to the pump-turbine and an armature winding of which is connected to the power system through the synchronizing breaker, the power system breaker and the main transformer, and an excitation circuit, including a frequency converter for supplying a field winding of the generator-motor with AC voltage of the variable frequency and a converter transformer for feeding the converter, which is branched from a junction of the power system breaker and the synchronizing breaker.

公开(公告)号：US4926541A

公开(公告)日：1990-05-22

申请号：US392059

申请日：1989-08-10

申请人： Shinsaku Hakuta ,  Yasuhiro Yasaka ,  Osamu Nagura ,  Eiji Tsuji ,  Makoto Suzuki ,  Hirotaka Akagawa

发明人： Shinsaku Hakuta ,  Yasuhiro Yasaka ,  Osamu Nagura ,  Eiji Tsuji ,  Makoto Suzuki ,  Hirotaka Akagawa

IPC分类号： E02B9/00 ,  H02K15/00 ,  H02K15/02 ,  H02K15/06

CPC分类号： H02K15/063 ,  H02K15/00 ,  Y02E10/22 ,  Y10T29/49012

摘要： A method of assembling a wound rotor of a vertical type adjustable speed electric rotating machine at a power house of a hydroelectric power plant, with the method including a layer of a rotor body on its side into a pit in the power house with a top surface of an outer circumference of the rotor body extending from the pit to a height sufficient to facilitate a carrying out of field coiling assembling operations by working personnel from a foundation of the power house whereby it is possible to limit an increase in the height of the power house to a sum of an axial length of the assembled rotor body and a height of a crane lifting jig.

公开(公告)号：US4136068A

公开(公告)日：1979-01-23

申请号：US823731

申请日：1977-08-11

申请人： Yukio Nomura ,  Osamu Nagura ,  Hiromasa Masuda

发明人： Yukio Nomura ,  Osamu Nagura ,  Hiromasa Masuda

IPC分类号： C09D5/38 ,  C08F251/02 ,  C08L51/02 ,  C08L61/20 ,  C09D133/04 ,  C09D133/14 ,  C09D151/00 ,  C09D161/20 ,  C08L1/10 ,  C08L1/14

CPC分类号： C08F251/02 ,  C09D133/14 ,  C08L51/02 ,  C08L61/20

摘要： A water dispersable coating composition usable for metallic coat and consisting mainly of the following three componentsA. a water dispersable cellulose graft polymer obtained by graft polymerizing styrene, ethylenically unsaturated carboxylic acid and the other copolymerizable vinyl monomer to a reaction product of a cellulose ester derivative having 1-20% by weight of free hydroxyl group with maleic anhydride,B. a water dispersable acrylic copolymer consisting of ethylenically unsaturated monomer having hydroxyl group, ethylenically unsaturated carboxylic acid and the other copolymerizable vinyl monomer, andC. amino resin.

公开(公告)号：US4883858A

公开(公告)日：1989-11-28

申请号：US234411

申请日：1988-08-19

申请人： Masayuki Takemoto ,  Osamu Nagura ,  Yukio Nomura ,  Minoru Yasuda

发明人： Masayuki Takemoto ,  Osamu Nagura ,  Yukio Nomura ,  Minoru Yasuda

IPC分类号： C08G73/10 ,  C08G73/12

CPC分类号： C08G73/101 ,  C08G73/10 ,  C08G73/121

摘要： A premix, an origomeric prepolymer obtainable from a limited addition polymerization effected with the premix and a thermosetting resin obtainable from such premix or prepolymer as well as fiber reinforced plastics made of such thermosetting resin which are excellent in the heat resistance, impact resistance and flexibility and exhibit a high toughness, wherein said premix comprises, as a first essential component, an amine-terminated amic acid expressed by the formula, ##STR1## in which R.sup.1 stands for a tetravalent aromatic residue having 6 to 20 carbon atoms and R.sup.2 denotes a divalent organic residue having 2 to 20 carbon atoms, said amic acid being produced by reacting a tetracarboxylic dianhydride with a diamine compound, and, as a second essential component, an N,N'-bis maleimide of the formula, ##STR2## wherein R.sup.3 denotes a divalent organic residue having 2 to 20 carbon atoms, the mole ratio of [N,N'-bismaleimide]/[amine-terminated amic acid] being in the range from 1 to 3.

公开(公告)号：US4812730A

公开(公告)日：1989-03-14

申请号：US35035

申请日：1987-04-06

申请人： Hiroto Nakagawa ,  Yasuteru Oono ,  Tadaatsu Kato ,  Osamu Nagura ,  Sadahiko Niwa ,  Yosio Furukawa ,  Shigehiro Kayukawa

发明人： Hiroto Nakagawa ,  Yasuteru Oono ,  Tadaatsu Kato ,  Osamu Nagura ,  Sadahiko Niwa ,  Yosio Furukawa ,  Shigehiro Kayukawa

IPC分类号： H02J3/38 ,  H02P9/00 ,  H02P9/10 ,  H02P9/14 ,  H02P9/42 ,  H02P23/00 ,  H02P5/40

CPC分类号： H02J3/38 ,  H02P9/007 ,  H02P9/42 ,  H02P2101/10

摘要： A generator/motor system comprises a generator/motor having a primary winding and a secondary winding installed on the motor rotor coupled to a prime mover/load, a main circuit interposed between a power system and the primary winding of the generator/motor, an excitation circuit including a frequency converter inserted between a part of the main circuit and the secondary winding of the generator/motor, a frequency difference detector for determining the difference between the frequency of the power system and a frequency dependent on the rotational speed of the load, and a phase-shift control device for controlling the firing phase of the frequency converter in the excitation circuit by use of a signal from the frequency difference detector as a reference signal. In normal operation, a frequency signal following the frequency of the power system is produced, while at the time of a disturbance of the power system, the same frequency signal of the power system as before the disturbance continues to be produced thereby to keep the system in stable operation. For this purpose, a starting electric machine, a synchronous motor and a synchronous generator are aligned, and an output of the synchronous generator is applied to the frequency difference detector.

摘要翻译： 发电机/电动机系统包括发电机/电动机，其具有安装在电动机转子上的初级绕组和次级绕组，所述初级绕组和次级绕组连接到原动机/负载，插入电力系统和发电机/电动机的初级绕组之间的主电路， 励磁电路，包括插入在主电路的一部分和发电机/电动机的次级绕组之间的变频器;频差检测器，用于确定电力系统的频率与取决于负载的转速的频率之间的差 以及相移控制装置，用于通过使用来自频差检测器的信号作为参考信号来控制激励电路中的变频器的点火相位。 在正常运行中，产生跟随电力系统频率的频率信号，而在电力系统干扰的时刻，电力系统的频率信号与干扰之前的相同频率信号继续产生，从而保持系统 稳定运行。 为此，起动电机，同步电动机和同步发电机对准，同步发电机的输出被施加到频率差检测器。

公开(公告)号：US4980629A

公开(公告)日：1990-12-25

申请号：US319708

申请日：1989-03-07

申请人： Akira Bando ,  Osamu Nagura ,  Shigehiro Kayukawa ,  Junichi Shiozaki ,  Akira Momiyama ,  Hiroto Nakagawa ,  Yasuteru Oono

发明人： Akira Bando ,  Osamu Nagura ,  Shigehiro Kayukawa ,  Junichi Shiozaki ,  Akira Momiyama ,  Hiroto Nakagawa ,  Yasuteru Oono

IPC分类号： H02P9/14 ,  H02H7/06 ,  H02P9/00 ,  H02P9/10 ,  H02P9/42

CPC分类号： H02P9/42 ,  H02P9/007 ,  H02P9/105 ,  H02P2101/10

摘要： An AC-excited generator/motor apparatus comprising; an AC-excited generator/motor having an armature mounting thereon; an armature winding connected to an AC power system and a rotor mounting thereon; and an exciting winding excited by an AC current. An exciting device for supplying a controlled AC exciting current to the exciting winding comprises; a device for calculating a real slip frequency based on a difference between the phase of an armature voltage appearing on the armature winding and the rotational phase of the rotor; and a device for controlling the exciting current supplied to the exciting winding from the exciting means in response to a deviation of the real slip frequency from a predetermined allowable range of slip frequencies so as to restore the real slip frequency within the allowable range of slip frequencies.

摘要翻译： 一种AC励磁发电机/电动机装置，包括： 其上安装有电枢的AC励磁发电机/电动机; 连接到AC电力系统的电枢绕组和安装在其上的转子; 和由交流电流激发的激励绕组。 用于向励磁绕组提供控制的交流励磁电流的励磁装置包括： 基于电枢绕组上出现的电枢电压的相位与转子的旋转相位之间的差来计算实际转差频率的装置; 以及用于响应于实际滑移频率与预定的滑差频率的允许范围的偏差来控制从励磁装置提供给励磁绕组的励磁电流的装置，以便将滑差频率恢复在滑差频率的允许范围内 。

公开(公告)号：US4870339A

公开(公告)日：1989-09-26

申请号：US144108

申请日：1988-01-15

申请人： Yosio Furukawa ,  Yasuhiro Yasaka ,  Osamu Nagura ,  Eiji Haraguchi ,  Hiroto Nakagawa ,  Yasuteru Oono

发明人： Yosio Furukawa ,  Yasuhiro Yasaka ,  Osamu Nagura ,  Eiji Haraguchi ,  Hiroto Nakagawa ,  Yasuteru Oono

IPC分类号： H02P9/00 ,  H02P9/14 ,  H02P9/42

CPC分类号： H02P9/007 ,  H02P9/42 ,  H02P2101/10 ,  Y10T307/735

摘要： A variable-speed power generating system comprises a variable-speed generator electrically connected at its primary winding to an electric power system and its secondary winding to the electric power system through a frequency converter and mechanically coupled to a driver driving the secondary side thereof, a phase detector generating an output signal representing a slip frequency in response to the application of a first input having a frequency component of an output generated from the primary winding of the variable-speed generator and a second input having a frequency component corresponding to the rotation speed of the driver, a controller controlling the frequency converter on the basis of a reference phase provided by the output signal of the phase detector, and regulating means for controlling the frequency converter so that, when the variable-speed generator is disconnected from the electric power system, the frequency applied to the secondary winding of the variable-speed generator may not deviate from a predetermined allowable range of variable frequency operation of the frequency converter.

公开(公告)号：US5886417A

公开(公告)日：1999-03-23

申请号：US848720

申请日：1997-05-19

申请人： Kiyoshi Oka ,  Osamu Nagura

发明人： Kiyoshi Oka ,  Osamu Nagura

IPC分类号： F01D15/10 ,  F03B13/06 ,  H02J3/24 ,  H02J3/30 ,  H02J3/38 ,  H02P9/42

CPC分类号： F01D15/10 ,  F03B13/06 ,  H02J3/24 ,  H02J3/30 ,  H02J3/38 ,  H02P9/42 ,  H02P2101/10 ,  Y02E10/22 ,  Y02E60/16 ,  Y02E60/17 ,  Y10T307/406

摘要： An electric power generating installation has a plurality of generator/motor units, each of which has a motor for converting kinetic energy into turning torque, a generator connected mechanically to the motor and connected electrically to an electric power system for converting turning torque into electric energy. A control system is provided for controlling the motor and the generator in such a way that they can be operated stably and continuously. The control system controls the different generator/motor units in different control modes so as to minimize cross current and resonance or beat phenomena.

摘要翻译： 发电设备具有多个发电机/电动机单元，每个发电机/电动机单元具有用于将动能转换为转矩的电动机，与电动机机械连接并与电力系统电连接的发电机，用于将转矩转换为电能 。 提供了一种控制系统，用于以能够稳定且连续地操作的方式控制电动机和发电机。 控制系统以不同的控制模式控制不同的发电机/电机单元，以便最小化交叉电流和共振或跳动现象。

公开(公告)号：US4652807A

公开(公告)日：1987-03-24

申请号：US799977

申请日：1985-11-20

申请人： Osamu Nagura

发明人： Osamu Nagura

IPC分类号： H02P1/26 ,  H02P1/30 ,  H02P1/28

CPC分类号： H02P1/30 ,  H02P1/26

摘要： An induction motor starting method comprises the steps of supplying a predetermined low-frequency current to the primary winding of an induction motor through a first cycloconverter having its input side connected to a commercial-frequency power source and its output side connected to the primary winding, supplying a voltage of a frequency from zero up to a first frequency through a second cycloconverter having its first input side connected to the commercial-frequency power source and its output side connected to the secondary winding, controlling the first cycloconverter to increase the frequency of the low frequency voltage supplied to the primary winding to the first frequency when the rotation speed of the induction motor reaches substantially a first rotation speed, and disconnecting the output side of the first cycloconverter with the primary winding to connect the output side of the first cycloconverter to the second input side of the second cycloconverter and connect the primary winding to the commercial-frequency power source when the rotation speed of the motor reaches substantially a second rotation speed.

摘要翻译： 感应电动机启动方法包括以下步骤：通过第一循环变频器向感应电动机的初级绕组提供预定的低频电流，该第一循环变换器的输入侧连接到商用频率电源，其输出侧连接到初级绕组， 通过其第一输入侧连接到商用频率电源并且其输出侧连接到次级绕组的第二循环换流器将频率从零到第一频率的电压提供给第一循环变换器，控制第一循环换流器以增加频率 当感应电动机的旋转速度达到基本上第一转速时，向初级绕组提供给第一频率的低频电压，并且将第一循环变换器的输出侧与初级绕组断开，以将第一循环换流器的输出侧连接到 第二个循环换流器的第二个输入端并连接起来 当马达的转速达到基本上第二转速时，将其卷绕到商用频率电源。