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1. 发明专利

JPH0538182A ELEVATOR SYSTEM 失效
公开(公告)号：JPH0538182A
公开(公告)日：1993-02-12
申请号：JP18432591
申请日：1991-07-24
申请人： HITACHI LTD , HITACHI BUILDING SYST ENG
发明人： HOKARI SADAO , NAKAMURA KIYOSHI , INABA HIROMI , SAKAI YOSHIO , TAKAHASHI HIDEAKI , MASUDA SEIKICHI , ANDO TAKEYOSHI , KUROSAWA TOSHIAKI , NOKITA AKIHIRO , KONYA MASAHIRO
IPC分类号： B66B1/06 , B66B1/30 , B66B1/34 , H02P5/46 , H02P5/74
摘要： PURPOSE:To provide an elevator system capacity of which can easily be increased by empolying a multi-drive system while realizing power saving and enhancement of comfortableness and reliability. CONSTITUTION:The elevator system comprises a plurality of power converters 5A, 5B, motors 6A, 6B being powered by the power converters 5A, 5B, and a torque distributing section 192 including a plurality of functions for determining the outputs to be born by the plurality of power converters based on a torque demand, wherein the elevator is operated based on a function selected according to the operating mode. According to the invention, power saving is achieved, control function is enhanced and the system capacity can be enlarged.

2. 发明专利

JPH08225274A LINEAR MOTOR-DRIVEN ELEVATOR 失效
公开(公告)号：JPH08225274A
公开(公告)日：1996-09-03
申请号：JP3490695
申请日：1995-02-23
申请人： HITACHI LTD , HITACHI BUILDING SYST ENG
发明人： NIHEI HIDEKI , TANAE SHUNICHI , NAGASE HIROSHI , MASUDA SEIKICHI , NAKAZATO MASAAKI , MEGURO TOSHIO
IPC分类号： B66B9/02 , B66B1/30
摘要： PURPOSE: To give no limitation on the lift stroke by providing multiple members connecting a guide rail and the secondary element of a linear motor at multiple positions of the lift stroke. CONSTITUTION: A car 1 is guided by a car guide rail 5, a balance weight section 3 is guided by a balanced weight section guide rail 6, and the secondary element of a linear motor is arranged on the balance weight section 3 to surround the primary side of the linear motor. A back secondary element 13 and a front secondary element 14 are connected to the balance weight guide rail 6 via a back support 11, a front support 12, and a tie bracket 10, and the weight of the secondary elements is held by the hoistway floor surface 9 fixed with the balance weight guide rail 6. A linear motor-driven elevator giving no limitation on the strength of a building such as the upper face and wall face of the hoistway and giving no effect to the architectural design is obtained.

3. 发明专利

JP2000128462A HOIST MACHINE 失效
公开(公告)号：JP2000128462A
公开(公告)日：2000-05-09
申请号：JP30500798
申请日：1998-10-27
申请人： HITACHI LTD
发明人： SATO MASAJI , MASUDA SEIKICHI
IPC分类号： B66B11/08 , H02K7/14 , H02K21/14
摘要： PROBLEM TO BE SOLVED: To simply carry out on-site installation work in a short time. SOLUTION: The shaft of a motor 2 is formed to a hollow. The solid shaft 3 of a hoisting drum is coupled through a friction type fastener 9 to the hollow shaft. The friction type fastener 9 presses a ring-like member against the outer peripheral surface of the shaft 3 for the hoisting drum and the inner peripheral surface of a hollow shaft 15, using the fastening force of a bolt for coupling.

4. 发明专利

JPH03195306A IRON RING TYPE LINEAR MOTOR 失效
公开(公告)号：JPH03195306A
公开(公告)日：1991-08-26
申请号：JP33274889
申请日：1989-12-25
申请人： HITACHI LTD , HITACHI NUCLEAR ENG
发明人： SATO MASAJI , NISHI RYUICHI , MASUDA SEIKICHI , MISHIMA KENJI
IPC分类号： H02K41/02 , B60L13/03
摘要： PURPOSE:To obtain an iron ring type linear motor, which can be manufactured easily and maintained well, by fixing a cover fixing arm to the outer side face of frame and then fixing upper and lower covers independently to the arm. CONSTITUTION:Screw holes for fixing a cover are provided for a cover fixing arm 10 at positions 14a, 15a, 16a. An upper cover 11 is fixed with fixing bolts 14, 15 to the cover fixing arm 10. Pawls 4c provided at the core side tip are inserted into grooves 1b made in the core 1 by means of a lower cover 12, and the opposite side end to the arm is fixed with a bolt 16 to the cover fixing arm 10. Consequently, no brace is required on the top face of the upper cover 11 which can thereby be made planar, thus facilitating take in of cooling air for a coil 2. Furthermore, mounting/dismounting work of a cover can be facilitated.

5. 发明专利

JP2013230059A Power generation system, control device, failure detection method and program 审中-公开
标题翻译：发电系统，控制装置，故障检测方法和程序
公开(公告)号：JP2013230059A
公开(公告)日：2013-11-07
申请号：JP2012101954
申请日：2012-04-27
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： HUANG SHU , SUGAWARA NAOSHI , MASUDA SEIKICHI
IPC分类号： H02P9/00
摘要： PROBLEM TO BE SOLVED: To detect an unbalance of three-phase AC voltages of a generator with high precision without adding new detection and other devices.SOLUTION: An unbalance voltage detection section 26 detects an unbalance of three-phase AC voltages output from the generator. A bandpass filter 28 extracts an AC component of a generator excitation current detected by a current detector. The excitation current in the extracted AC component is converted to an absolute value of the AC component in an absolute value calculation section 29 and is output in a current waveform processed so as to approximate a DC current in a change rate limitation section 30. A threshold determination section 31 determines an unbalance of the three-phase AC voltages output from the generator 4 if the value of the DC current output from the change rate limitation section 30 remains greater than a threshold for a time set by a time setting section 32. A failure detection section 27 stops the generator in the event of the unbalance of the three-phase AC voltages.
摘要翻译：要解决的问题：不增加新的检测和其他装置，高精度地检测发电机的三相交流电压的不平衡。解决方案：不平衡电压检测部分26检测从发电机输出的三相交流电压的不平衡。带通滤波器28提取由电流检测器检测的发电机励磁电流的AC分量。提取的AC分量中的励磁电流被转换为绝对值计算部分29中的AC分量的绝对值，并以处理的电流波形输出，以便在变化率限制部分30中接近直流电流。阈值如果从变化率限制部30输出的直流电流的值保持大于由时间设定部分32设定的时间的阈值，则确定部分31确定从发生器4输出的三相AC电压的不平衡。在三相交流电压不平衡的情况下，故障检测部分27停止发电机。

6. 发明专利

JP2010161883A Permanent magnet type rotary electric machine 有权
标题翻译：永磁式旋转电机
公开(公告)号：JP2010161883A
公开(公告)日：2010-07-22
申请号：JP2009003022
申请日：2009-01-09
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： KORI DAISUKE , MIKAMI HIROYUKI , MASUDA SEIKICHI , KIMURA MAMORU
IPC分类号： H02K1/22 , H02K1/27 , H02K21/14
CPC分类号： H02K1/276 , B60L11/14 , B60L2200/26 , B60L2210/40 , Y02T10/641 , Y02T10/70 , Y02T10/7077 , Y02T10/7241
摘要： PROBLEM TO BE SOLVED: To solve the problems that for a railway vehicle motor, the weight of a rotary electric machine largely influences on a riding comfort and the weight reduction of the rotary electric machine is important and for a rotary electric machine with a large capacity in particular, a rotor structure incorporating a permanent magnet in the permanent magnet slot of a rotor core is often employed in view of easy assembling and reduction in the number of components but this structure has disadvantage that the electric characteristics and strength characteristics are in trade-off relationship depending on the structure of the permanent magnet slot and the position in the rotor and then it is necessary to secure a withstand strength against a centrifugal force and reliability and meet the specification of electric characteristics. SOLUTION: Four permanent magnet slots 11 per one pole are arranged in an outer circumferential direction in the rotor core 9, and a permanent magnet 12 is buried in each of them, a connecting section is formed in the circumferential direction between the respective permanent magnet slots 11, and the width of the connecting section 14 as a center of one pole in the connecting section and the width of the connecting section 14 between the adjacent poles different in polarity are made larger than the width of the other connecting sections 15. COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题为了解决铁路车辆电动机的问题，旋转电机的重量对乘坐舒适性的影响很大，并且旋转电机的重量减轻是重要的，并且对于具有考虑到易于组装和减少部件的数量，通常采用在转子芯的永久磁铁槽中结合永磁体的转子结构的大容量，但是该结构的缺点在于电特性和强度特性是取决于永磁体槽的结构和转子中的位置的权衡关系，然后需要确保抵抗离心力和可靠性的耐受强度，并满足电特性的规格。解决方案：在转子铁心9的外圆周方向上设置每一极四个永久磁铁槽11，并且在每个永久磁铁槽中埋设永磁体12，在各自的周向上形成连接部永久磁铁槽11，连接部分14的连接部分14的一个极的中心的宽度和极性不同的相邻磁极之间的连接部分14的宽度大于其它连接部分15的宽度。版权所有（C）2010，JPO＆INPIT

7. 发明专利

JPH09135546A ABDUCTION-TYPE ROTARY MACHINE 失效
公开(公告)号：JPH09135546A
公开(公告)日：1997-05-20
申请号：JP28836195
申请日：1995-11-07
申请人： HITACHI LTD
发明人： TAJIMA FUMIO , KAWAMATA SHOICHI , OHARAGI HARUO , SHIBUKAWA SUETARO , MASUDA SEIKICHI
IPC分类号： H02K1/06 , H02K17/12 , H02K19/10 , H02K29/00
摘要： PROBLEM TO BE SOLVED: To reduce the size and weight of a rotary machine by allowing a power supply frequency at the maximum number of rotations out of the numbers of rotations which give the maximum torque when a car is running at a low speed, the maximum phase voltage of the rotary machine at a high speed, the number of turns of a single-phase stator winding, and the length and width of a multilayer rotor iron core to satisfy a specified relation. SOLUTION: A stator 2 consists of a stator iron core 4 with a stator winding 5 and a stator supporting plate 6 which supports the stator iron core 4. A rotor 3 consists of a solid-state rotor iron core 7 and a multilayer rotor iron core formed on the inner surface of the iron core 7. When a power supply frequency at the maximum number of rotations out of the numbers of rotations which give the maximum torque when a car is running at a low speed is Fm(Hz), the maximum phase voltage of a rotary machine when the car is running at a high speed is Vb(V), the number of turns of a single-phase stator winding 5 is W, the length and width of the multilayer rotor iron core 7 are We(cm) and Hc(cm) respectively, Fm, Vb, W, We, and Hc should satisfy a specified relation shown by the formula. By this method, the size and weight of an abduction-type rotary machine 1 can be reduced.

8. 发明专利

JPH05316688A RADIAL FAN 失效
公开(公告)号：JPH05316688A
公开(公告)日：1993-11-26
申请号：JP11875792
申请日：1992-05-12
申请人： HITACHI LTD
发明人： MASUDA SEIKICHI
IPC分类号： H02K9/06
摘要： PURPOSE:To raise efficiency and low noise by fixing an inner vane firmly to the main board and the side board, and pivoting an inner vane by its inner side end so that the outer side end rotates and abuts on the outer vane thereby forming a dogleg shape with the outer vane. CONSTITUTION:A main board 1, an outer vane 3a, and a side plate 2 are made into an integrated article, and it is given enough strength since it receives the centrifugal force at high speed revolution as an integrated structure. Moreover, the inner vane 3b is arranged inside of the section between the outer vanes 3a, and its inner side is pivoted rotatably on the main plate 1 and the side plate 2. When a fan starts rotation, the inner vane 3b starts to rotation in the opposite direction to the rotation by inertia, and rotates in the opposite direction to that of the rotation by wind pressure, and stops, abutting on the outer vane 3a. Hereby, the outer vane 3a and the inner vane 3b forms the vane in dogleg shape, and an efficient and low-noise radial fan can be gotten.

9. 发明专利

JPS5571187A CONTROL SYSTEM OF THREEEPHASE INDUCTION MOTOR 失效
公开(公告)号：JPS5571187A
公开(公告)日：1980-05-29
申请号：JP14340878
申请日：1978-11-22
申请人： HITACHI LTD
发明人： MASUDA SEIKICHI
IPC分类号： H02P3/18
摘要： PURPOSE:To miniaturize and lighten this motor, by low controllng the temperature rise of stator winding wherein the number of poles in the case when this induction motor is braked in formed in number not less than threefold as many as the number of poles in case of power travelling. CONSTITUTION:Since a magnetic field of a stator may simply make up a N pole and a S pole when using a dynamic brake, the stator winding of each phase is divided, each terminal of the whinding is changed over at the outsides. That is, winding terminals X1 and U2, Y1 and V2, and Z1 and W2 are each connected and X2-Y2-Z2 are combined in order to build up normal star connection when power travelling. Meanwhile, when braking this motor, X1 and U2, Y1 and V2, Z1 and W2, X2 and V1, and Y2 and W1 are united in order to connect the coils of each phase in series. The number of poles in case of braking becomes theefold as many as the number of polses in case of power traveling by the external connection.

10. 发明专利

JPS5361016A OPERATING THREEEPHASE INDUCTION MOTOR 失效
公开(公告)号：JPS5361016A
公开(公告)日：1978-06-01
申请号：JP13571476
申请日：1976-11-11
申请人： HITACHI LTD
发明人： MASUDA SEIKICHI , ISHIKAWA TATSUAKI , MATSUO MASAHIRO
IPC分类号： H02P23/00 , H02P21/04 , H02P23/03 , H02P23/07 , H02P23/24 , H02P25/04 , H02P25/16
摘要： PURPOSE:To provide a two-speed operation by one kind of winding, by means of reversing a direction of current in any one phase of the primary windings made in Y-connection for three-phase induction motor used for elevaters.

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