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51. 发明专利

JPS5415111A AC COMMUNICATOR MOTOR 失效
公开(公告)号：JPS5415111A
公开(公告)日：1979-02-03
申请号：JP7991477
申请日：1977-07-06
申请人： HITACHI LTD
发明人： SUGIURA YASUYUKI , MIYASHITA KUNIO , OKUDA HIROSHI , YAMASHITA NOBUYUKI , MOGI SHIYOUJI , HATA MASAO
IPC分类号： H02K27/00
摘要： PURPOSE:To make resonance frequency lower than exciting frequency by providing specified size slits on a stator iron core in the flow directions of the magnetic fluxes of a stator and where magnetic flux density is amll in such directions as not obstruct the passage of said magnetic fluxes.

52. 发明专利

JPS5339414A HYSTERESIS MOTOR 失效
公开(公告)号：JPS5339414A
公开(公告)日：1978-04-11
申请号：JP11305176
申请日：1976-09-22
申请人： HITACHI LTD
发明人： MIYASHITA KUNIO , SUGIURA YASUYUKI , WACHI YASUYUKI , YASUDA IZURU
IPC分类号： H02K19/08
摘要： PURPOSE:To promote an increase of the torque, by collecting the magnetic path for the magnetic flux of the hystresis rotor toward the peripheral side with a slit provided in the hysteresis rotor.

53. 发明专利

JP2003120504A WIND POWER GENERATION DEVICE 审中-公开
公开(公告)号：JP2003120504A
公开(公告)日：2003-04-23
申请号：JP2001317922
申请日：2001-10-16
申请人： HITACHI LTD
发明人： KIKUCHI TERU , FUTAMI MOTOO , SUGIURA YASUYUKI , SUGAWARA NAOSHI , MIYAZAKI KOICHI
IPC分类号： F03D7/04 , F03D9/00 , H02P9/00
摘要： PROBLEM TO BE SOLVED: To provide a wind power generation device very efficiently generating electric power while controlling output fluctuation due to wind speed fluctuation in a wind power generation system in quick responses, and simplifying speed control and a structure of the windmill. SOLUTION: A difference between efficient rotating speed corresponding to wind speed detected by a wind speed detector 21 and rotating speed of the windmill detected by a rotating speed detector 11 is entered into a rotation speed controller 12. A difference between effective electric power command from the rotating speed controller and effective electric power from a synchronous generator 2 is entered into, for example, the electric power controller 13. The electric power controller 13 controls output of the synchronous generator 2 according to the effective electric power command to control rotating speed of the windmill 1 according to increase and decrease of output of the synchronous generator 2.

54. 发明专利

JP2003018894A Apparatus and method for controlling operation 有权
标题翻译：控制操作的装置和方法
公开(公告)号：JP2003018894A
公开(公告)日：2003-01-17
申请号：JP2001197650
申请日：2001-06-29
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： SUGIURA YASUYUKI , FUTAMI MOTOO , KIKUCHI TERU , SUGAWARA NAOSHI , MIYAZAKI KOICHI
IPC分类号： H02P9/08 , H02P9/00
摘要： PROBLEM TO BE SOLVED: To provide an apparatus which, in equipment wherein the output of a synchronous generator directly coupled with a driving source is converted to a direct current through a power converter and further converted to an alternating current through a power converter and power is supplied to a system power supply, matches the magnitude and phase of voltage produced by the generator-side converter with the magnitude and phase of the induced voltage of the synchronous generator at start. SOLUTION: An encoder is coupled directly with the synchronous generator and is used as a phase detecting means. An induced voltage is detected and three phase-to-two-phase converted to an active voltage and a reactive voltage. In this conversion, a sine wave and a cosine wave are used from a table unferein a timer generated from the encoder is set as an address. When the induced voltage is not matched with the sine wave of the table value at this time, the reactive voltage has an value. At start, the output of a phase lock control portion is corrected to a table address determined from the encoder so that the reactive voltage is set to zero. Thereby, the magnitude and phase of a voltage generated by the equipment are matched with the magnitude and phase of the induced voltage of the synchronous generator.
摘要翻译：要解决的问题：提供一种在与驱动源直接耦合的同步发电机的输出被转换成通过功率转换器的直流并且进一步转换成通过功率转换器的交流电的设备中，提供给系统电源，使发生器侧转换器产生的电压的幅度和相位与启动时的同步发电机的感应电压的大小和相位相匹配。解决方案：编码器与同步发生器直接耦合，用作相位检测装置。检测感应电压，并将三相相位转换为有效电压和无功电压。在该转换中，从表格中使用正弦波和余弦波，将从编码器产生的定时器设置为地址。此时当感应电压与表值的正弦波不匹配时，无功电压有一个值。在启动时，将锁相控制部分的输出校正为从编码器确定的表地址，使无功电压设置为零。因此，由设备产生的电压的大小和相位与同步发电机的感应电压的大小和相位相匹配。

55. 发明专利

JPH07200084A POWER CONVERTER 失效
公开(公告)号：JPH07200084A
公开(公告)日：1995-08-04
申请号：JP33491593
申请日：1993-12-28
申请人： HITACHI LTD
发明人： SUGIURA YASUYUKI , UEDA SHIGETA , NOHARA MIKIYA
IPC分类号： H02J3/18 , G05F1/70 , H02M7/12 , H02M7/155 , H02M7/48
摘要： PURPOSE:To enable a no-break operation by decomposing voltage signals for three phases of an AC power source into the respective components of the real axis and the imaginary axis, detecting the phase of a positive phase sequence from the respective components by using an instantaneous symmetric coordinate method and defining the phase of the positive phase sequence as a voltage phase. CONSTITUTION:A phase angle detector 118 decomposes the voltage signals for three phases of an AC system 101 into the respective components of the real axis and the imaginary axis and detects the phase of the positive phase sequence from the respective components by using the instantaneous symmetric coordinate method. Then, the phase of the positive phase sequence from the phase angle detector 118 is defined as the voltage phase. Thus, even when one line inside the AC system 101 commits a ground fault and the voltage becomes zero, the phase is highly accurately detected and the operation is stably continued without stopping a power converter 103 by controlling the power converter 103 based on the detected phase.

56. 发明专利

JPH07131936A DC TRANSMISSION CONTROLLER 失效
公开(公告)号：JPH07131936A
公开(公告)日：1995-05-19
申请号：JP27356193
申请日：1993-11-01
申请人： HITACHI LTD
发明人： SUGIURA YASUYUKI , UEDA SHIGETA , MOTOBE MITSUSACHI
IPC分类号： H02J1/00 , H02J3/36
摘要： PURPOSE:To perform the power control inclusive of the direction of the power flow by controlling the voltage of a converter, which mainly supplies power, and its DC terminal to be constant, and performing the constant control of power, according to circulation power, in respect of other converters, in case that there are plurality of self exciting power converters being coupled through a DC line. CONSTITUTION:For example, the power converter of a power receiver and transmitter 1 performs DC constant control by a voltage controller 49, and besides the power converters of power receiver and transmitters 2, 3,...47, and 48 control the circulation power of power converters, according to the directions required by the system and necessary power by means of circulation voltage controllers 52, 54, 56, and 58. And, a voltage controllers 46 changes over switches 59-63 and changes over one unit into DC voltage constant control out of other residual power converters in case that the power converter to perform DC voltage fixed control goes wrong, and other power converters controls the power of power converters, according to the direction required by the system and power.

57. 发明专利

JPH02140617A METHOD AND DEVICE FOR DETECTING POSITION USING ENCODER 失效
公开(公告)号：JPH02140617A
公开(公告)日：1990-05-30
申请号：JP29337288
申请日：1988-11-19
申请人： HITACHI LTD
发明人： SUGIURA YASUYUKI , MIYASHITA KUNIO , TAKAHASHI TADASHI , NAGASE HIROSHI , SUZUKI KATSUNORI , KOBAYASHI SUMIO , NAKAGAWA KAZUYUKI
IPC分类号： G01D5/36 , G01D5/244 , G01D5/245
摘要： PURPOSE:To always detect an absolute position of a body to be detected by operating an encoder, etc. by using an auxiliary power source when the power failure occurs, and catching the fluctuation of the body to be detected when such a failure occurs by a counter, while interrupting a serial transmission. CONSTITUTION:Information related to a position of a body to be detected 11 obtained by a detecting part 1 is sent to a control part 2. On the side of the detecting part 1, an encoder 3 for outputting a sine wave of two-phase in accordance with the position variation of the body to be detected 1, and a counter 4 having a count function of up/down are provided. At the time of a normal operation, the counter 4 executes the count of up or down from a lead and a lag of the phase, based on a 2-phase sine wave output of the encoder 3, brings this count value to serial transmission successively to the control part 2 side, and the control part 2 side executes an information processing 7 for detecting a position, based on this count value. On the other hand, when the power failure occurs by using an auxiliary power source for emergency use, the encoder 3 and the counter 4 are operated, and while interrupting the serial transmission, the counter 4 catches the fluctuation of the body to be detected 11 when such a failure occurs, and after the power source is restored, the serial transmission of the counter value is restarted.

58. 发明专利

JPH0257912A DETECTING APPARATUS OF POSITION OF SPEED, OR METHOD THEREFOR 失效
公开(公告)号：JPH0257912A
公开(公告)日：1990-02-27
申请号：JP20839988
申请日：1988-08-24
申请人： HITACHI LTD
发明人： SUGIURA YASUYUKI , ONOE TOSHIKA , MIYASHITA KUNIO , NAGASE HIROSHI , MUTO NOBUYOSHI , KOBAYASHI SUMIO , SUGAI HIROSHI
IPC分类号： G01P3/481 , G01D5/244 , G01D5/245 , G01D5/246 , G01P3/42 , G01P3/44 , G01P3/489 , G05D3/12
摘要： PURPOSE:To enable execution of rapid control by detecting a position or a speed by using a rough position detection signal when a moving body is in a high-speed state, and a fine position detection signal when it is in a low-speed state. CONSTITUTION:Analog outputs A1 and B1 of a phase A and a phase B, such as since waves having a phase difference of 90 degrees, which are generated from a position detector 3, are inputted as pulse-width-modulated outputs A4 and B4 to analog conversion circuits 12 and 13 through pulse width modulating pulsing circuits 6 and 7. Next, outputs A6 and B6 from the circuits 12 and 13 are wave-shaped 15 and 16 into square wave pulses and outputted as outputs A8 and B8. Next, in a rough position detecting circuit 19, counting is made from edges of the outputs A8 and B8 by an incremental/ decremental counter and a rough position detection signal is outputted therefrom. In a fine position detecting circuit 14, a rough position interval is divided equally into (n) on the basis of the outputs A6 and B6 and a fine position detection signal is outputted therefrom. In a position and speed detecting circuit 20 of a since wave signal detecting system, a position and a speed are detected, and a speed instruction is given from a speed controller 23.

59. 发明专利

JPH0113318B2 失效
公开(公告)号：JPH0113318B2
公开(公告)日：1989-03-06
申请号：JP12073481
申请日：1981-08-03
申请人： HITACHI LTD
发明人： MORINAGA SHIGEKI , MYASHITA KUNIO , SUGIURA YASUYUKI
IPC分类号： H02P6/08 , H02P6/06 , H02P6/10

60. 发明专利

JPS6356159A CONTROLLING METHOD FOR BRUSHLESS MOTOR 失效
公开(公告)号：JPS6356159A
公开(公告)日：1988-03-10
申请号：JP19716186
申请日：1986-08-25
申请人： HITACHI LTD
发明人： TAJIMA FUMIO , MIYASHITA KUNIO , SUGIURA YASUYUKI , ABUKAWA TOSHIMI
IPC分类号： H02K29/00
摘要： PURPOSE:To cause a magnetic flux generated by armature reaction to work on a generated torque effectively by controlling power to polyphase excitation windings of stator according to a position of rotor. CONSTITUTION:A stator 1 has a stator core 4, on which a polyphase excitation winding 5 is wound, and a rotor 2 has a rotor core 7 constituted in such manner that permanent magnet poles 8 and high-permeability magnetic materials are alternately arranged on a face opposed to a stator inner peripheral face via an air gap therebetween. A position sensing means PS for detecting a position of the rotor 2 is provided, and power to polyphase excitation windings 5 of the stator 1 is controlled according to a position sensing signal of said means PS so that a magnetization of armature reaction works on the high-permeability magnetic material of the rotor 2.

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