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61. 发明专利

JPS6051350B2 失效
公开(公告)号：JPS6051350B2
公开(公告)日：1985-11-13
申请号：JP117078
申请日：1978-01-11
申请人： HITACHI LTD
发明人： SHIMOZU TADAO , TANABE SHOJI , SENTO HIROSHI , YAMASHITA SEIJI , MYASHITA KUNIO
IPC分类号： H02K1/22 , H02K1/27 , H02K21/46
摘要： The rotor core of a synchronous motor or a synchronous generator with a permanent magnet is comprised of a multiplicity of laminated thin iron sheets each having as many segments as the poles. Slits are formed between each adjacent segment, and the magnetic reluctance of the slits is made larger than that between the rotor core and the stator core, thereby minimizing the leakage fluxes within the rotor core. Each segment is required to be prevented from being broken away by centrifugal force generated while the machine is in operation. According to the invention, adjacent segments are connected by a non-magnetic material through the slits. The non-magnetic material is fitted in the recesses formed at both sides of the slit in such a manner as to connect them with each other, each of the recesses being positioned substantially parallel to the circumference of the rotor and having a wider bottom than the opening thereof.

62. 发明专利

JPS60183995A INVERTER FOR DRIVING INDUCTION MOTOR 失效
公开(公告)号：JPS60183995A
公开(公告)日：1985-09-19
申请号：JP3851084
申请日：1984-03-02
申请人： HITACHI LTD
发明人： TOUFUJI YASUMASA , SHIMOZU TADAO , IBORI SATOSHI
IPC分类号： H02M7/48 , H02P1/02 , H02P27/06
摘要： PURPOSE:To rapidly, readily safely and reliably restart at momentary power interrupting time by performing a current control (ACR), a voltage control (AVR), and throttling at the momentary power interrupting time, and automatically restarting at the momentary power interrupting time due to ACR.AVR soft start after recovering. CONSTITUTION:The secondary voltage of a transformer 21 connected with an AC power source 1 is led through a rectifier 19, to a momentary power interruption automatic restarting and power interrupting circuit 20. An instantaneous power stop detection signal is output to an ACR throttle, an ACR soft starter 121, an AVR throttle, an AVR soft starter 122, and a start compensator 123 at the momentary power interruption time. Thus, a current control and a voltage control systems are throttled at the momentary power interrupting time, and an inverter is softly started by a restart signal after recovering.

63. 发明专利

JPS60183986A SPEED COMMAND CONVERTER 失效
公开(公告)号：JPS60183986A
公开(公告)日：1985-09-19
申请号：JP3851384
申请日：1984-03-02
申请人： HITACHI LTD
发明人： SHIMOZU TADAO , IBORI SATOSHI
IPC分类号： H02P29/00 , H02P25/04 , H02P27/06
摘要： PURPOSE:To facilitate the regulation of the set value of a resonance rotating speed by providing a comparator which outputs a signal when an input value exceeds the prescribed value, and an amplifier for limiting the input signal stepwisely by the output signal of the comparator. CONSTITUTION:A calculator 13 compares a set signal 10 wit a feedback signal 11 and outputs a speed set signal Vi. The signal Vi is limited to the value set by a potentiometer 17 by a limiter. Further, when the signal Vi is increased and increased larger than the added value of the value of the potentiometer 17 and the value of a potentiometer 19, a comparator 20 outputs a signal, and the limiter value increase. Thus, the regulating operation is simplified.

64. 发明专利

JPS59117491A Controller for induction motor 失效
标题翻译：感应电动机控制器
公开(公告)号：JPS59117491A
公开(公告)日：1984-07-06
申请号：JP22605082
申请日：1982-12-24
申请人： Hitachi Ltd
发明人： TOUFUJI YASUMASA , SHIMOZU TADAO , NINOMIYA JIYUICHI , IBORI SATOSHI
IPC分类号： H02P27/06
摘要： PURPOSE:To prevent a vector axis from displacing at the transiently varying time by arbitrarily delaying a phase via a response delay circuit in a vector control system of a current inverter. CONSTITUTION:In a transfer function of a current control amplifier 12, a transfer function of leading compensation is 1+(R2+R3)C2.S, and an integrating function is 1/R1.C1X1/S, where the transfer function Kp of the phase controller is designated by 13 and electric time constant is designated by 14. The amplitude I1 of the primary current from a converter 15 is fed back to an amplifier 12 through a transfer function Fi. The vector relation between the actual primary current I1 and the relative phase angle phi is not broken by arbitrarily delaying the phase by the transfer function of the amplifier 12.
摘要翻译：目的：通过在当前逆变器的矢量控制系统中通过响应延迟电路任意延迟相位，防止矢量轴在瞬时变化时移位。构成：在电流控制放大器12的传递函数中，前导补偿的传递函数为1+（R2 + R3）C2.S，积分函数为1 / R1.C1X1 / S，其中传递函数Kp 相位控制器由13表示，电时间常数由14表示。来自转换器15的初级电流的振幅I1通过传递函数Fi反馈到放大器12。通过放大器12的传递函数任意地延迟相位，实际初级电流I1与相对相位角phi之间的矢量关系不会被破坏。

65. 发明专利

JPS5549962A ROTARY ELECTRIC MACHINE OF PERMANENT MAGNET 失效
公开(公告)号：JPS5549962A
公开(公告)日：1980-04-11
申请号：JP12152078
申请日：1978-10-04
申请人： HITACHI LTD
发明人： KOBAYASHI HIDEAKI , SHIMOZU TADAO
摘要： PURPOSE:To manufacture a permanet magnent rotor appropriate to a synchronous machine, by preparing the same number of line-symmetric trapezoidal permanent magnets as poles and annularly placing the permanent magnets in a prescribed positional relation to one another in a rotor core. CONSTITUTION:As for a four-pole machine, four line-symmetric trapezoidal permanents 1a-1d are prepared. A magnetic pole side a of each permanent magnet, which is longer than other sides c, d, is magnetized as an N-pole. Another magnetic pole side b of the magnet is magnetized as an S-pole. The magnets are annularly placed so that the magnetic pole sides a or b face the sides c of the adjacent magnets across a gap 3. The gap 3 is increased from the side c toward the side d in consideration of the number of magnetic fluxes which pass through the gap. Rotor core segments 4a-4d, which are provided with slits 8, 9 leaving bridge parts 6, 7 in order to increase the reluctance, are arranged around the permanent magnets 1a- 1d, thereby constituting a rotor.

66. 发明专利

JPS54148214A Permanent-magnet-type synchronous motor 失效
标题翻译： PERMANENTTMAGNETTTYPE同步电机
公开(公告)号：JPS54148214A
公开(公告)日：1979-11-20
申请号：JP5614778
申请日：1978-05-13
申请人： Hitachi Ltd
发明人： YAMASHITA SEIJI , MIYASHITA KUNIO , SHIMOZU TADAO , TANABE SHIYOUJI
IPC分类号： H02K21/46 , H02K15/03
摘要： PURPOSE: To provide a compact synchronous motor of high output, by using permanent magnets for a rotor, equalizing the number of the magnets to that (P/2) of the pairs of poles, rendering the direction of magnetization of the permanent magnets coincident with the radial direction of the rotor and producing image poles in the circumferential direction of the rotor.
CONSTITUTION: A layer-built rotor iron core 2 is fixed on a rotary shaft 1. Numerous conductors 3 are provided in the form of a squirrel cage in the peripheral part of the iron core 2. The permanent magnets 11, which are shaped like an arc of angle equal to the quotient of division of the total central angle by the pole number P, and provided in the central part of the iron core 2. The number of the permanent magnets is equal to that (P/2 which is 3 because P=6 in the case shown in Fig.) of the pairs of the poles. The direction of magnetization of the magnets is rendered coincident with the radial direction of the iron core. The magnets have their N- poles on the outside and their S-poles on the inside. Slits 12 are provided between the poles of the iron core 2. The width of the iron core part 13 inside the magnets 11 is so set that the part 13 is not magnetically saturated when a half of flux of the magnet passes through the part.
COPYRIGHT: (C)1979,JPO&Japio
摘要翻译：目的：为了提供高输出的紧凑型同步电动机，通过使用转子的永久磁铁，将磁体的数量与极对数（P / 2）相等，使永磁体的磁化方向与转子的径向，并且在转子的圆周方向上产生图像极。构成：将层叠的转子铁芯2固定在旋转轴1上。多个导体3以铁芯2的周边部分中的鼠笼的形式设置。永磁体11的形状如弧的角度等于总中心角除以极数P的商，并设置在铁芯2的中心部分。永磁体的数量等于（P / 2，因为P / 2为3，因为在图中所示的情况下，P = 6）。磁体的磁化方向与铁芯的径向一致。磁铁的外侧有N极，内侧有S极。狭缝12设置在铁芯2的两极之间。磁体11内部的铁芯部分13的宽度设定为当磁体的一半通过该部分时，部分13不会磁饱和。

67. 发明专利

JPS53100415A ROTOR HAVING A PERMANENT MAGNET 失效
公开(公告)号：JPS53100415A
公开(公告)日：1978-09-01
申请号：JP1426477
申请日：1977-02-14
申请人： HITACHI LTD
发明人： SHIMOZU TADAO , TANABE SHIYOUJI , IINO HIROSHI
摘要： PURPOSE:Contact plates are constituted by a non-magnetic contact plate and a magnetic contact plate, the material and the number of processes required for making the contact plates are decreased in comparison with that of the prior art and thereby non-expensive arrangement may be made.

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