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1. 发明专利

JPH10201296A AC EXCITATION TYPE GENERATOR-MOTOR 失效
公开(公告)号：JPH10201296A
公开(公告)日：1998-07-31
申请号：JP400597
申请日：1997-01-13
申请人： HITACHI LTD , KANSAI ELECTRIC POWER CO
发明人： ENDO MASAICHI , MAOKA AKIHIRO , HIGUCHI MIKISUKE , FUTAMI MOTOO , ICHINOSE MASAYA , MINOGUCHI KIYOSHI
IPC分类号： H02J3/24 , H02J3/30 , H02P9/00
摘要： PROBLEM TO BE SOLVED: To improve the stability of an AC power system by performing speed control at waiting operation, and performing the effective power control in the case that abnormality occurs in an AC power system, and discharging and absorbing the effective power from an AC excitation type generator-motor suddenly. SOLUTION: In the condition that an AC excitation type of generator-motor 2 is performing waiting operation, a switch 11 is closed, and a switch 12 is opened, and the phase control of the AC excitation type generator-motor 2 is performed with the output signal of a speed controller 6, and it is controlled so as to reduce the deviation between the rotational speed detected by a speed detector 5 and the rotational speed command value, thus the speed control operation is performed. In case that abnormality occurs in an AC power system, the switch 11 is opened, and the switch 12 is closed, and the output signal of a power controller 8 is inputted into a current controller 9, and it is controlled as a to reduce the deviation between the active power supplied from the AC power system 1 detected by the power detector 7 and the active power command value given from outside, thus the active power control operation is performed.

2. 发明专利

JP2009171691A Wind turbine generator system 有权
标题翻译：风力发电机系统
公开(公告)号：JP2009171691A
公开(公告)日：2009-07-30
申请号：JP2008005169
申请日：2008-01-15
申请人： Hitachi Ltd , Kansai Electric Power Co Inc:The , 株式会社日立製作所 , 関西電力株式会社
发明人： OHARA SHINYA , ICHINOSE MASAYA , FUTAMI MOTOO , HASEGAWA TSUTOMU , ISO OSAMU
IPC分类号： H02P9/00 , F03D9/00
CPC分类号： Y02E10/72
摘要： PROBLEM TO BE SOLVED: To provide a wind turbine generator system wherein a flicker is reduced.
SOLUTION: The wind turbine generator system includes: a wind turbine that receives the wind and is rotated; a generator connected with the shaft of the wind turbine; and a power converter that converts the generated output of the generator. The system further includes: a flicker measuring means for measuring a flicker; and a means for, when the flicker value measured by the flicker measuring means is larger than a predetermined value, causing a smoothing filter to act on a power command sent to the power converter.
COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：提供一种减少闪烁的风力涡轮发电机系统。风力发电机系统包括：接收风并旋转的风力涡轮机; 与风力涡轮机的轴连接的发电机; 以及转换发电机产生的输出的功率转换器。该系统还包括：用于测量闪烁的闪烁测量装置; 以及用于当由所述闪烁测量装置测量的闪烁值大于预定值时，使得平滑滤波器作用于发送到所述功率转换器的功率命令的装置。版权所有（C）2009，JPO＆INPIT

3. 发明专利

JP2000262096A CONTROLLER FOR GENERATOR MOTOR AND GENERATING SYSTEM USING THE SAME 失效
公开(公告)号：JP2000262096A
公开(公告)日：2000-09-22
申请号：JP6148099
申请日：1999-03-09
申请人： HITACHI LTD , KANSAI ELECTRIC POWER CO
发明人： AIHARA TAKASHI , MADORI IWAO , ICHINOSE MASAYA , FUTAMI MOTOO , KATO YUICHI , NISHIO TORU , MOROMITSU AKIRA , MINOGUCHI KIYOSHI
IPC分类号： H02J3/24 , H02J3/36 , H02K7/02 , H02P9/00
摘要： PROBLEM TO BE SOLVED: To suppress the occurrence of overvoltage from a system, when an accident phase is detached from the system. SOLUTION: During the operation of DC power transmission equipment 36, the exciting winding wire of a generator motor 30 is AC-excited, based on a deviation between a voltage command value V and a voltage detection value Vf by the detection of a voltage detector 34, and the output voltage of the generator motor 30 is controlled constantly. When a stop signal is outputted from the DC power transmission equipment 36 accompanying accident of a system, a voltage command value Vo is dropped by a setting level by a voltage command value converter 14, in response to a signal from a stop signal detector 16. The output voltage of the generator motor 30 is dropped according to the deviation between a dropped voltage command value V and a detection voltage Vf. Namely, the output voltage of the generator motor 30 is dropped as a preceding control, before an accident phase is detached from the system.

4. 发明专利

JPH10248166A STABILIZING APPARATUS FOR AC POWER SYSTEM 失效
公开(公告)号：JPH10248166A
公开(公告)日：1998-09-14
申请号：JP5173797
申请日：1997-03-06
申请人： HITACHI LTD , KANSAI ELECTRIC POWER CO
发明人： YASAKA YASUHIRO , ENDO MASAICHI , FUTAMI MOTOO , MAOKA AKIHIRO , ICHINOSE MASAYA , UNO SEINOSUKE , HAYASHIDA HIROSHI , NISHIO TORU , MINOGUCHI KIYOSHI , RIYOUMAN AKIRA
IPC分类号： H02J3/24 , G05F1/70
摘要： PROBLEM TO BE SOLVED: To provide a stabilizing apparatus, for an AC power system, by which the overvoltage of the AC power system provided with a static power conversion device for linkage such as for frequency conversion or the like is suppressed at a high speed. SOLUTION: A stabilizing apparatus is provided with an AC excitation-type generator-motor 10 in which a primary winding 11 is connected to an AC system 1 via a transformer 5, with an AC excitation device 12 which supplies an AC current to its secondary winding 12 and with an exciting-current control system 20 which comprises a voltage controller 21, an effective-power controller 22 and a current controller 23. When a voltage Vp, at the AC system 1, detected by a voltage detector 9 is raised due to the trip or the like of a static power conversion device 2 so as to become higher than a prescribed voltage Vover, the voltage controller 21 outputs a voltage command Id which suppressed the overvoltage of the system voltage Vp, the reactive voltage of the system is absorbed by the AC excitation-type generator-motor 10, and a rise in a system voltage is suppressed at a high speed.

5. 发明专利

JP2010187482A Wind-power generation apparatus and control method thereof 有权
标题翻译：风力发电装置及其控制方法
公开(公告)号：JP2010187482A
公开(公告)日：2010-08-26
申请号：JP2009030560
申请日：2009-02-13
申请人： Hitachi Ltd , Kansai Electric Power Co Inc:The , 株式会社日立製作所 , 関西電力株式会社
发明人： NAKAYAMA YASUAKI , ICHINOSE MASAYA , FUTAMI MOTOO , OHARA SHINYA , HASEGAWA TSUTOMU , ISO OSAMU
IPC分类号： H02J3/38 , H02J3/24 , H02P9/00
CPC分类号： Y02E10/763
摘要： PROBLEM TO BE SOLVED: To suppress a power fluctuation in a synchronous generator of a power system by reactive power control in a wind-power generation apparatus. SOLUTION: A wind-power generation apparatus 100 includes a polyphase AC generator 106 which generates power by rotation of a windmill 108, a power converter 112 which controls the electric power generated by the generator to supply effective power and reactive power to a power system, a windmill control unit 110 which determines a blade angle command value and command values Pref and Qref of the effective power and reactive power, and a blade angle change unit 122 which changes an angle of a blade according to the blade angle command value. It includes an electric power fluctuation detecting device 116 which is electrically connected to a power system containing at least one synchronous generator 120 for detecting a power fluctuation in the synchronous generator 120, and a system stabilizing means (110+114) for suppressing the power fluctuation. COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：通过风力发电装置中的无功功率控制来抑制电力系统的同步发电机的功率波动。解决方案：风力发电装置100包括通过风车108的旋转产生电力的多相交流发电机106，功率转换器112，其控制由发电机产生的电力以向无功功率提供有效功率和无功功率电力系统，确定叶片角度指令值和有效功率和无功功率的指令值Pref和Qref的风车控制单元110以及根据叶片角度指令值改变叶片角度的叶片角度改变单元122 。它包括电力波动检测装置116，其电连接到包含用于检测同步发电机120中的功率波动的至少一个同步发电机120的电力系统，以及用于抑制功率波动的系统稳定装置（110 + 114）。版权所有（C）2010，JPO＆INPIT

6. 发明专利

JPH11168900A VARIABLE VELOCITY POWER GENERATING MOTOR CONTROL METHOD AND APPARATUS 失效
公开(公告)号：JPH11168900A
公开(公告)日：1999-06-22
申请号：JP33254597
申请日：1997-12-03
申请人： HITACHI LTD , KANSAI ELECTRIC POWER CO
发明人： FUTAMI MOTOO , ICHINOSE MASAYA , KUBOTA YUZURU , MOTOBE MITSUSACHI , HIGUCHI MIKISUKE , ENDO MASAICHI , KATO YUICHI , NISHIO TORU , RIYOUMAN AKIRA
IPC分类号： H02P9/00 , H02P9/14
摘要： PROBLEM TO BE SOLVED: To realize the harmonization of velocity control and effective power control of variable velocity power generating motor. SOLUTION: An effective power exchanged between a power generating motor 3 and a power system 1 and a terminal voltage of the power generating motor 3 are respectively detected, frequency, phase and amplitude of an excitation current of a secondary coil of the power generating motor 3 are controlled based on deviation, in order to adjust these detected values to respective command value and detected value of the rotating velocity of the power generating motor 3 is adjusted to the command value. For compensation of control amount in relation to the effective power on the basis of the velocity deviation, the effective power is preferentially controlled when the detected value of the rotating velocity is in the preset range and the velocity is preferentially controlled when the detected value goes out of the preset range.

7. 发明专利

JPH11113296A CONTROLLER FOR GENERATOR MOTOR AND POWER GENERATION SYSTEM EMPLOYING THE SAME 失效
公开(公告)号：JPH11113296A
公开(公告)日：1999-04-23
申请号：JP26984497
申请日：1997-10-02
申请人： HITACHI LTD , KANSAI ELECTRIC POWER CO
发明人： ICHINOSE MASAYA , FUTAMI MOTOO , KUBOTA YUZURU , MOTOBE MITSUSACHI , HIGUCHI MIKISUKE , ENDO MASAICHI , MINOGUCHI KIYOSHI , NISHIO TORU
IPC分类号： H02J3/38 , H02P9/00 , H02P9/10
摘要： PROBLEM TO BE SOLVED: To provide a controller for a generator motor for suppressing an overvoltage occurring immediately after separating a faulty phase from a system. SOLUTION: A generator motor 18 is connected with a power system 24 and controlled to produce an output voltage corresponding to a voltage command value VO using a voltage regulator 15, an excitation controller 16 and a power converter 17. A voltage command value modifying unit 12 is interposed between a voltage command generator 11 and a subtractor 14 while being connected with a fault detector 13. When the fault detector 13 detects a fault on a power system 24, the voltage command value modifying unit 12 lowers an inputted voltage command value VO to a specified level V before being outputted.

8. 发明专利

JPH11225500A CONTROLLER AND METHOD FOR VARIABLE SPEED GENERATOR-MOTOR 失效
公开(公告)号：JPH11225500A
公开(公告)日：1999-08-17
申请号：JP2334798
申请日：1998-02-04
申请人： HITACHI LTD , KANSAI ELECTRIC POWER CO
发明人： FUTAMI MOTOO , ICHINOSE MASAYA , KUBOTA YUZURU , MOTOBE MITSUSACHI , HIGUCHI MIKISUKE , ENDO MASAICHI , KATO YUICHI , NISHIO TORU , MOROMITSU AKIRA
IPC分类号： H02P9/00
摘要： PROBLEM TO BE SOLVED: To prevent excessive rise in power frequency, even when the power is lost during three-phase short circuit or when a generator-motor is cut off an AC power source. SOLUTION: This controller detects a slip phase, based on the phase of the rotor of a generator-motor and the phase of the power voltage detected with a power voltage phase detector 7 and excites the generator-motor 5, based on the slip phase. In this case, the power voltage phase detector 7 creates a power voltage phase value using the frequency approximately equal to the frequency of the power voltage made within, in place of the power phase detected value when it detects the amplitude of the power voltage falling below specified. Hereby, even in power loss during three-phase short circuit of the power source, an output voltage of the generator-motor of specified frequency can be output.

9. 发明专利

JPH10257800A AC-EXCITED MOTOR GENERATOR AND ITS OPERATION METHOD 失效
公开(公告)号：JPH10257800A
公开(公告)日：1998-09-25
申请号：JP5354397
申请日：1997-03-07
申请人： HITACHI LTD , KANSAI ELECTRIC POWER CO
发明人： ENDO MASAICHI , YASAKA YASUHIRO , MAOKA AKIHIRO , FUTAMI MOTOO , ICHINOSE MASAYA , UNO SEINOSUKE , HAYASHIDA HIROSHI , NISHIO TORU , MINOGUCHI KIYOSHI , RIYOUMAN AKIRA
IPC分类号： H02P9/00
摘要： PROBLEM TO BE SOLVED: To provide an AC-excited motor generator that can extend a stable operation range even in a range of shortage excitation, and its operation method. SOLUTION: In the operation method of an AC-excited motor generator where a current controller 18 of an AC-excited generator 3 controls a current by dividing into a q-axis current component for controlling an effective power and a d-axis current component for controlling a reactive power, a primary voltage phase operator 21 that calculates a voltage phase θv of a primary voltage based on the output of the above power detector, a rotor phase detector 12 that detects a rotary angle θr being indicated by the electrical angle of the AC-excitated generator 3, a phase detector 20 that calculates a difference between the voltage phase θv and the rotary angle θr (θs =θv -θr ) are provided, thus controlling the current controller 18 so that the speed of the secondary current of the AC-excited generator 3 becomes faster than the change in the angular velocity of the rotor.

10. 发明专利

GB2509824A Railway power conditioner for power interchange between feeder sections 未知
公开(公告)号：GB2509824A
公开(公告)日：2014-07-16
申请号：GB201320495
申请日：2013-11-20
申请人： HITACHI LTD
发明人： NAKATSUKA YASUHIRO , IMAZU YASUHIRO , SAKUCHI OSAMU , ICHINOSE MASAYA , KIYOFUJI YASUHIRO , BANDO AKIRA , NARUSHIMA JUN
IPC分类号： B60M3/02 , B60M3/04 , B60M3/06
摘要： A railway power conditioner carries out power conversion according to the travelling status of a train supplied with power from a railway feeder. A control device for the railway power conditioner CON1 is connected to a first feeder LX1 connected to a load side of a transformer TrS1 in a first railway substation SS1, and a second feeder LX2 connected to a load side of a transformer TrS2 in a second railway substation SS2, and decides an amount of power interchanged between the first and second feeders. The control device decides the amount of power interchanged between the first and second feeders, using the received power in the first railway substation and power on the first feeder, and the received power in the second railway substation and power on the second feeder. The received power PL1, PL2 by the substations is directly measured using voltage transformers PT1A, P2TA and current transformers CT1A, CT2A.

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