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31. 发明专利

JP2011047839A Vector measuring device, vector measuring system, and vector measuring method 有权
标题翻译：矢量测量装置，矢量测量系统和矢量测量方法
公开(公告)号：JP2011047839A
公开(公告)日：2011-03-10
申请号：JP2009197573
申请日：2009-08-28
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： BANDO AKIRA , KIYOFUJI YASUHIRO , ICHINOSE MASAYA , HIGUCHI MIKISUKE
IPC分类号： G01R23/16
摘要： PROBLEM TO BE SOLVED: To provide a method for measuring highly accurately at high speed, a frequency and a vector of an AC signal.
SOLUTION: Measurement data which are AC signals are inputted, and a fundamental wave component of discrete Fourier transform is operated by performing weighted addition with a complex constant determined by being repeated with a period which is a natural number. In the operation of the fundamental wave component, the operation is performed a plurality of times by changing the period of the discrete Fourier transform, and the frequency is operated from the ratio of each operation result of the discrete Fourier transform having each different period, and a phase detection result, by using a plurality of operation results of the discrete Fourier transform.
COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：提供一种高速精确地测量AC信号的频率和矢量的方法。
解决方案：输入作为交流信号的测量数据，并且通过以通过以自然数的周期重复确定的复常数执行加权相加来操作离散付里叶变换的基波分量。在基波分量的运算中，通过改变离散付里叶变换的周期来进行多次运算，并且从每个不同周期的离散付里叶变换的运算结果的比例来操作频率，以及通过使用离散付里叶变换的多个运算结果，进行相位检测结果。版权所有（C）2011，JPO＆INPIT

32. 发明专利

JP2010200016A Line switch device and plant control system 有权
标题翻译：线路开关装置和设备控制系统
公开(公告)号：JP2010200016A
公开(公告)日：2010-09-09
申请号：JP2009042938
申请日：2009-02-25
申请人： Hitachi Information & Control Solutions Ltd , Hitachi Ltd , 株式会社日立情報制御ソリューションズ , 株式会社日立製作所
发明人： TAHARA YUKIKO , NISHIOKA ATSUSHI , KIYOFUJI YASUHIRO , KOBAYASHI EIJI , SHIMIZU KATSUTO , OTSUKA YUSAKU , SHIMIZU TOSHIKI , ONOZUKA AKIHIRO , FUNAKI SATORU , ISHIKAWA MASAKAZU , SEKI YUSUKE , SASAKI WATARU , MASUKO NAOYA , NAKANO AKIHIRO , OGURA MAKOTO , OZAWA SHOICHI
IPC分类号： H04L29/14 , H04B1/74
摘要： PROBLEM TO BE SOLVED: To provide a new line switching device for suppressing damages to a line fault, to a minimum, improving the availability, and enhancing cost-effectiveness in the system as a whole, and to provide a plant control system which uses the device. SOLUTION: The line switching devices corresponding to each input/output device are arranged in order to control the plurality of input/output devices with the use of a single CPU. An ID is imparted to each line switching device. An ID for uniquely identifying the line switching device is embedded in a data frame to be transmitted from the CPU. By having the line switching device allow only the data frame with IDs matching to pass, collisions of the data frames, which occurs when the data frame improperly comes-in to a control line, are avoided. COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：提供一种用于抑制对线路故障的损害的新的线路切换装置，至少提高系统的可用性和提高成本效益，并且提供一种工厂控制系统使用该设备。解决方案：对应于每个输入/输出设备的线路切换设备被布置以便使用单个CPU来控制多个输入/输出设备。 ID被赋予每个线路交换设备。用于唯一地识别线路交换设备的ID被嵌入在要从CPU发送的数据帧中。通过使线路交换装置仅允许具有匹配的ID的数据帧通过，当数据帧不正确地进入控制线时发生的数据帧的冲突被避免。版权所有（C）2010，JPO＆INPIT

33. 发明专利

JP2010160649A Controller and control method 有权
标题翻译：控制器与控制方法
公开(公告)号：JP2010160649A
公开(公告)日：2010-07-22
申请号：JP2009001899
申请日：2009-01-07
申请人： Hitachi Information & Control Solutions Ltd , Hitachi Ltd , 株式会社日立情報制御ソリューションズ , 株式会社日立製作所
发明人： FUNAKI SATORU , KIYOFUJI YASUHIRO , SUENAGA MASASHI , OGURA MAKOTO , KOBAYASHI EIJI , ONOZUKA AKIHIRO , SEKI YUSUKE , SHIMIZU TOSHIKI , TAHARA YUKIKO , SUGIMOTO YUTA
IPC分类号： G06F11/18 , G06F12/16
CPC分类号： G06F11/1008 , H03M13/09
摘要： PROBLEM TO BE SOLVED: To prevent going on performing processing in an unstable state by immediately and certainly detecting a fault. SOLUTION: This controller generates a first error detection code from first information output as a result obtained by executing a prescribed program by a first processor. The controller generates a second error detection code from second information output as a result obtained by executing the program by a second processor configured such that the second processor outputs the same arithmetic result as the first processor. The controller detects whether or not the first information and the second information are identical, detects whether or not the first error detection code and the second error detection code are identical, and controls writing of the first information or the second information into a main memory based on results of the detections. COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：为了防止在不稳定状态下立即执行处理并确定地检测故障。解决方案：该控制器通过由第一处理器执行规定的程序而获得的第一信息输出产生第一错误检测码。控制器从第二信息输出生成第二错误检测码，作为通过由配置为使得第二处理器输出与第一处理器相同的算术结果的第二处理器执行程序获得的结果。控制器检测第一信息和第二信息是否相同，检测第一错误检测码和第二错误检测码是否相同，并且控制将第一信息或第二信息写入到主存储器中检测结果。版权所有（C）2010，JPO＆INPIT

34. 发明专利

JP2008099436A Power converter 审中-公开
标题翻译：电源转换器
公开(公告)号：JP2008099436A
公开(公告)日：2008-04-24
申请号：JP2006278222
申请日：2006-10-12
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： IMAZU YASUHIRO , KATO TETSUYA , KIYOFUJI YASUHIRO , KOSEKI SHOICHIRO , ITO TOMOMICHI
IPC分类号： H02M7/12 , H02M7/497
摘要： PROBLEM TO BE SOLVED: To provide an arrangement of a power converter which can reduce oscillatory current flowing in the DC common part wiring of the converters that have different switching timings. SOLUTION: The power converter has a plurality of converters. A pulse generating means for supplying pulses to the plurality of converters generates pulses, by comparing a command value with a periodically changing reference value. The converters which constitute a group, the group comprising at least m-units of converters (m=number of converters) and are electrically connected adjacent to each other, have phase difference in the reference value for deciding the switching timing of the converter, to be plus or minus (360/n)×1±10 degrees (n, 1=arbitrary integers, and n>1) for the electrical angle, and are constituted to have a plurality of groups. COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：提供一种能够减少在具有不同切换定时的转换器的直流公共部分布线中流动的振荡电流的功率转换器的布置。电源转换器具有多个转换器。用于向多个转换器提供脉冲的脉冲发生装置通过将命令值与周期性变化的参考值进行比较来产生脉冲。构成组的转换器，至少包括m个转换器组（m =转换器数）并相互电连接的转换器具有用于确定转换器的转换时序的参考值的相位差，对于电角度是正或负（360 / n）×1±10度（n，1 =任意整数，n> 1），并且被构成为具有多个组。版权所有（C）2008，JPO＆INPIT

35. 发明专利

JP2007143350A Electric drive vehicle 有权
标题翻译：电动车
公开(公告)号：JP2007143350A
公开(公告)日：2007-06-07
申请号：JP2005336460
申请日：2005-11-22
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： KIKUCHI TERU , IKIMI TAKASHI , KIYOFUJI YASUHIRO , SHIMADA KEIZO , SUGAWARA NAOSHI
IPC分类号： B60L11/18 , B60T8/17
CPC分类号： Y02T10/7005
摘要： PROBLEM TO BE SOLVED: To operate a mechanical brake always in a state of low vehicle speed without depending on conditions of the mass of a vehicle, the inclination of a road, or the response speed of the mechanical brake.
SOLUTION: The electric drive vehicle is provided with an electric motor for driving or braking wheels, and a motor controller that controls this electric motor. When the running speed of the vehicle drops below a speed range lower than a predetermined speed in stopping a running vehicle, torque outputted by the motor is changed toward a predetermined level. A target level for changing torque varies, depending on the total mass of the vehicle and inclination of the road on which the vehicle is running.
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：在不依赖于车辆质量，道路倾斜度或机械制动器的响应速度的条件下，始终处于低车速的状态下操作机械制动器。解决方案：电动车辆设置有用于驱动或制动车轮的电动机和控制该电动机的电动机控制器。当停止行驶车辆时，当车辆的行驶速度低于低于预定速度的速度范围时，由马达输出的扭矩改变为预定水平。根据车辆的总质量和车辆行驶的道路的倾斜度，改变扭矩的目标水平变化。版权所有（C）2007，JPO＆INPIT

36. 发明专利

JP2004153957A Power conversion apparatus 有权
公开(公告)号：JP2004153957A
公开(公告)日：2004-05-27
申请号：JP2002317638
申请日：2002-10-31
申请人： Hitachi Ltd , Tohoku Electric Power Co Inc , 東北電力株式会社 , 株式会社日立製作所
发明人： KIYOFUJI YASUHIRO , AIHARA TAKASHI , KAWABATA KATSUTO , ONOSE TAKAYUKI , ISHIDA YUJI , URANO KIMIO , SATO TAKU , WAKU HIDEKI
IPC分类号： H02M7/48
摘要： PROBLEM TO BE SOLVED: To provide a power conversion apparatus capable of preventing the occurrence of an excess current by quickly responding if an abnormality occurs in a grid to abruptly change a grid voltage, and suppressing the output of an unbalance component or a harmonic component in a normal time. SOLUTION: Filters 15 and 16 input a detection voltage of the grid through a three-phase/dq axes converter 5. A grid abnormality determination means 17 inputs one of the outputs of the three-phase/dq axes converter 5, and outputs a time constant switching command to the filters 15 and 16 when the change rate exceeds a prescribed value. The filters 15 and 16 switch a response time constant to a long value in a normal time or to a short value at grid abnormality under the time constant switching command. COPYRIGHT: (C)2004,JPO

37. 发明专利

JP2003009537A Power converter 审中-公开
标题翻译：电源转换器
公开(公告)号：JP2003009537A
公开(公告)日：2003-01-10
申请号：JP2001193873
申请日：2001-06-27
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： ICHINOSE MASAYA , KIYOFUJI YASUHIRO , FUTAMI MOTOO , UEDA SHIGETA
IPC分类号： H02J3/38 , G05F1/67 , H02M3/155 , H02M7/12 , H02M7/48
摘要： PROBLEM TO BE SOLVED: To overcome a problem in the prior art that there rises a risk that the optimum operation cannot be assured for each battery because the generated power is different in each battery depending on the installation area of a plurality of solar batteries. SOLUTION: Power can be supplied to the power system only with an inverter by connection a plurality of power generators with DC via a voltage step-up circuit and an reverse current stop diode. Moreover, the inverter executes the control to keep constant a DC voltage, and also executes the maximum power follow-up control by changing duty cycle of the voltage step-up circuit which is sequentially connected respectively to a plurality of power generating facilities to make maximum the AC power outputted from the inverter. The duty cycle of voltage step-up circuit is changed to execute the maximum power follow-up control in the manner that the inverter executes the DC voltage constant control, power of each power generation facility is detected from the current and voltage outputted from a power generator for each power generation facility, and each AC power or each step-up voltage input power outputted from the power generation facilities becomes maximum.
摘要翻译：要解决的问题为了克服现有技术中存在的问题，由于多个太阳能电池的安装面积由于每个电池的发电功率不同，所以存在不能确保每个电池的最佳操作的风险。解决方案：只能使用变频器通过电压升压电路和反向电流停止二极管连接多台直流发电机，才能向电力系统供电。此外，逆变器执行控制以保持直流电压恒定，并且还通过改变顺序地连接到多个发电设备的升压电路的占空比来执行最大功率跟随控制，以使最大功率跟随从变频器输出的交流电源。电压升压电路的占空比被改变为以逆变器执行直流电压恒定控制的方式执行最大功率跟随控制，从根据电力输出的电流和电压检测每个发电设备的功率每个发电设备的发电机，并且从发电设备输出的每个AC电力或每个升压电压输入功率变得最大。

38. 发明专利

JP2008187794A MOTOR CONTROL SYSTEM, SERIES HYBRID VEHICLE, AND APPARATUS AND METHOD FOR MOTOR CONTROL 审中-公开
公开(公告)号：JP2008187794A
公开(公告)日：2008-08-14
申请号：JP2007017717
申请日：2007-01-29
申请人： HITACHI LTD
发明人： SUGAWARA NAOSHI , FUJIMOTO TETSUHIRO , KIYOFUJI YASUHIRO , SHIMADA KEIZO , KIKUCHI TERU , IMAIE KAZUHIRO
IPC分类号： H02P21/00 , B60K6/46 , B60L50/13 , B60W10/08 , B60W20/00 , H02P27/04
摘要： PROBLEM TO BE SOLVED: To make a motor torque follow a target torque even when direct-current voltage defining voltage applied to a motor varies. SOLUTION: A motor control system includes: a generator 20; alternating-current motors 50, 55; power converters 40, 45 that drive the alternating-current motors 50, 55 using the direct-current voltage outputted by the generator 20; and a motor controlling means 200 for controlling the power converters 40, 45. The motor controlling means 200 predicts variation in direct-current voltage to control the power converters 40, 45. COPYRIGHT: (C)2008,JPO&INPIT

39. 发明专利

JP2003102130A POWER STORAGE SYSTEM 审中-公开
公开(公告)号：JP2003102130A
公开(公告)日：2003-04-04
申请号：JP2001287733
申请日：2001-09-20
申请人： TOHOKU ELECTRIC POWER CO , HITACHI LTD
发明人： URANO KIMIO , SATO TAKU , WAKU HIDEKI , KIYOFUJI YASUHIRO , AIHARA TAKASHI , MADORI IWAO , ISHIDA YUJI , ICHINOSE MASAYA
IPC分类号： H02J3/32 , H02J3/16 , H02J3/18
摘要： PROBLEM TO BE SOLVED: To provide a high reliability power storage system by adding a function for reducing flickers of a linkage system, in a arrange which will not influence the operation, although the power storage system is normally used for equalizing a load. SOLUTION: In a control system of an A/D converter 10 in the power storage system, a positive phase voltage 14 (e.g., effective value of the fundamental wave for the past 20 ms) is calculated continuously from a voltage at a battery system linkage point 6 by using DFT (Discrete Fourier Transform), a PQ vector control (a control for independently self-regulating active and reactive power of a self-excited converter to an arbitrary PQ instruction value) is implemented, by using the positive phase voltage at the linkage point as a reference, and the flickers are suppressed by filtering the positive phase voltage by using a high-pass filter, multiplying a filtered signal by the gain and adding the multiplied result to a horizontal axis current regulating part of the PQ vector control as a correction quantity.

40. 发明专利

JP2020089216A 電力変換装置および電力変換装置の制御方法审中-公开
公开(公告)号：JP2020089216A
公开(公告)日：2020-06-04
申请号：JP2018225184
申请日：2018-11-30
申请人： HITACHI LTD
发明人： WATANABE KENTA , ITO TOMOMICHI , KIKUCHI TERU , KAWAZOE HIROSHIGE , KIYOFUJI YASUHIRO
IPC分类号： H02M7/49 , H02M7/12 , H02M7/493
摘要：【課題】並列接続された各相のアームの単位変換器内の直流コンデンサ電圧のアンバランスを低減する。【解決手段】各相のP側およびN側ごとに、メインアーム10UP、10VP、10WP、10UN、10VN、10WNと、サブアーム11UP、11VP、11WP、11UN、11VN、11WNとを備え、U相、V相およびW相の各相のP側およびN側ごとに、メインアーム10UP、10VP、10WP、10UN、10VN、10WNとサブアーム11UP、11VP、11WP、11UN、11VN、11WNは並列接続され、電力変換制御部13は、並列接続されたメインアームとサブアームとの間を同一相内で循環する並列アーム間循環電流を制御する。【選択図】図1

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