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1. 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。

2. 发明专利

JP2008013992A Dig-out and conveying system, excavating construction vehicle and load-carrying platform mounting vehicle 有权
标题翻译：出口和输送系统，挖掘建筑车辆和装载平台安装车辆
公开(公告)号：JP2008013992A
公开(公告)日：2008-01-24
申请号：JP2006185509
申请日：2006-07-05
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： SHIMADA KEIZO , SUGAWARA NAOSHI , FUJIMOTO TETSUHIRO
IPC分类号： E02F9/00 , B60L11/18 , H01M10/44
CPC分类号： Y02T10/7005 , Y02T10/7022
摘要： PROBLEM TO BE SOLVED: To achieve charging with high operation efficiency at low cost in an open-cut mining system including a plurality of electrically driven dump trucks loaded with a storage battery and a capacitor, and one shovel.
SOLUTION: The shovel 2 is provided with a charger 12, and a charging terminal 13 thereof can be simply connected wherever the dump truck stops in the periphery of the shovel 2. During loading the dump truck 3 with sediment by the shovel 2, the charger 12 of the shovel 2 charges the storage battery 3a loaded on the dump truck 3 through the charging terminal 13. At the end of loading with the sediment and charging, the dump truck 3 conveys/discharges the sediment to a predetermined position, returns, and reaches in back of the aftermost dump truck 6. In the meantime, the next dump truck 4 performs loading of sediment and charging at the same time. Such repetition is continuously performed, whereby the time spent only for charging is eliminated in the respective dump trucks 3, 4, 5, 6, so that the operation efficiency of the open-cut mining system can be remarkably improved.
COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：在包括装载有蓄电池和电容器的多个电动自卸车和一个铲子的开采采矿系统中以低成本实现高运行效率的充电。解决方案：铲车2设有充电器12，并且其充电端子13可以简单地连接在自卸车停止在铲2的周边的任何地方。在铲车2向铲车3装载沉淀物的过程中铲车2的充电器12通过充电端子13对装载在自卸车3上的蓄电池3a进行充电。在装载沉淀物和充电结束时，自卸车3将沉淀物输送/排出到预定位置，返回，并到达最后的自卸车6之后。同时，下一辆自卸车4同时进行沉积物的装载和充电。这种重复持续进行，从而在各自的自卸车3,4,5,6中消除了仅用于充电的时间，从而可以显着地提高开挖采矿系统的运行效率。版权所有（C）2008，JPO＆INPIT

3. 发明专利

JP2012075316A Electrically driven vehicle 有权
标题翻译：电动车
公开(公告)号：JP2012075316A
公开(公告)日：2012-04-12
申请号：JP2011264207
申请日：2011-12-02
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： KIKUCHI TERU , IKIMI TAKASHI , SHIMADA KEIZO , SUGAWARA NAOSHI
IPC分类号： B60L15/20
CPC分类号： Y02T10/7275
摘要： PROBLEM TO BE SOLVED: To achieve start and stop which do not cause backward movement without performing coordinated control of a mechanical brake and an motor when an electrically driven vehicle is started or stopped on a slope.SOLUTION: The vehicle has an induction motor 2 for braking or driving a wheel 4, a motor controller 19 for controlling the induction motor, and a mechanical brake 8 for braking the wheel. When the vehicle stops in the condition that the mechanical brake is not actuated, the motor controller applies a DC voltage or an AC voltage in a frequency range from -1 to +1 Hz to a stator of the induction motor, and the vehicle is maintained in a stop state by means of a torque generated in the induction motor to stop the vehicle.
摘要翻译：要解决的问题：当电动车辆在斜坡上启动或停止时，实现不执行机械制动器和电动机的协调控制的不会引起向后运动的启动和停止。解决方案：车辆具有用于制动或驱动车轮4的感应电动机2，用于控制感应电动机的电动机控制器19和用于制动车轮的机械制动器8。当车辆在机械制动器未被致动的情况下停止时，电动机控制器向-1感应电动机的定子施加从-1到+1Hz的频率范围的直流电压或交流电压，并且保持车辆通过在感应电动机中产生的转矩停止车辆的停止状态。版权所有（C）2012，JPO＆INPIT

4. 发明专利

JP2011072189A Electric drive vehicle 有权
标题翻译：电动车
公开(公告)号：JP2011072189A
公开(公告)日：2011-04-07
申请号：JP2010282530
申请日：2010-12-20
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： KIKUCHI TERU , IKIMI TAKASHI , SHIMADA KEIZO , SUGAWARA NAOSHI
IPC分类号： B60L7/00 , B60L9/16 , B60L15/20 , B60T7/12 , H02P21/00 , H02P27/04
CPC分类号： Y02T10/644 , Y02T10/7275
摘要： PROBLEM TO BE SOLVED: To provide an electric drive vehicle that starts and stops without backward motion, while requiring no cooperative control between a mechanical brake and a motor when the electric drive vehicle starts and stops on a sloping road. SOLUTION: The electric drive vehicle includes an induction motor for braking or driving wheels, a motor controller for controlling the induction motor, and the mechanical brake for braking the wheels. The motor controller applies a DC voltage or an AC voltage of a frequency in a range from -1 to +1 Hz to a stator of the induction motor when the vehicle stops while the mechanical brake is not in operation, and keeps the vehicle stopped by causing the induction motor to generate a torque to stop the vehicle. COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：提供一种在没有反向运动的情况下启动和停止的电动车辆，同时当电动驱动车辆在倾斜的道路上启动和停止时，机械制动器和电动机之间不需要协调控制。电动车辆包括用于制动或驱动车轮的感应电动机，用于控制感应电动机的电动机控制器和用于制动车轮的机械制动器。当机械制动器不工作时车辆停止时，电动机控制器将直流电压或频率在-1至+1Hz范围内的交流电压施加到感应电动机的定子，并将车辆停止使感应电动机产生停止车辆的转矩。版权所有（C）2011，JPO＆INPIT

5. 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

6. 发明专利

JP2003134892A WIND-POWER GENERATOR AND METHOD OF WIND POWER GENERATION 审中-公开
公开(公告)号：JP2003134892A
公开(公告)日：2003-05-09
申请号：JP2001327458
申请日：2001-10-25
申请人： HITACHI LTD
发明人： KIKUCHI TERU , FUTAMI MOTOO , SUGIURA YASUYUKI , SUGAWARA NAOSHI , MIYAZAKI KOICHI
IPC分类号： F03D9/00 , F03D9/02 , H02P9/00
摘要： PROBLEM TO BE SOLVED: To prevent the risk of a conventional wind-power generator which supplies a power system with the power which marring quality due to short cycles of fluctuations that it cannot respond by the pitch control of a windmill or the output control of a power rectifier. SOLUTION: The power system can be supplied with a proper quality of power where power ripples are suppressed, by providing a generator with a controller which outputs commands of charging a DC capacitor 4 with DC power, when the output of a synchronous generator 2 connected to the shaft of a windmill 1 increases, and lowering the terminal voltage across the DC capacitor 4 and discharging DC power to the inverter 5 from the DC capacitor 4 to an inverter 5, when the output of the synchronous motor 2 decreases.

7. 发明专利

JP2009077505A Electric-driven vehicle 有权
标题翻译：电动车
公开(公告)号：JP2009077505A
公开(公告)日：2009-04-09
申请号：JP2007243213
申请日：2007-09-20
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： KIKUCHI TERU , IKIMI TAKASHI , SASAKI MASAKI , SHIMADA KEIZO , SUGAWARA NAOSHI , FUJIMOTO TETSUHIRO , KIYOFUJI YASUHIRO
IPC分类号： B60L9/18 , B60L11/18
CPC分类号： Y02T10/7005
摘要： PROBLEM TO BE SOLVED: To provide an electric-driven vehicle capable of accurately detecting slippage of driving wheels without receiving an influence of a change in a wheel radius.
SOLUTION: The electric-driven vehicle is equipped with motors 1, 4 for driving or braking the wheels and a motor controller 33 for controlling the motors. The vehicle is further equipped with speed detectors 9, 10, 11, 12 for detecting the rotational speed of the driven wheels and the driving wheels of the vehicle, and with a slip determining device 18 computing the slip ratio of the driving wheels from the rotational speed detected value of the driven wheels and the driving wheels to determine whether the driving wheels are slipped or not. The slip determining device 18 is equipped with a means for detecting the wheel speed of the driven wheels and the driving wheels, using the wheel radius of the driven wheels and the driving wheels set in advance. The means for detecting the wheel speed adjusts the gain for computing the wheel speed detected value of the driven wheels or the wheel speed detected value of the driving wheels so that the wheel speed detected value of the driven wheels approaches the wheel speed detected value of the driving wheels in the state that the driving wheels are not slipped.
COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：提供一种能够准确地检测驱动轮的滑动而不受到轮半径变化的影响的电动车辆。
解决方案：电动车辆配备有用于驱动或制动车轮的电动机1,4和用于控制电动机的电动机控制器33。车辆还装备有用于检测从动轮和车辆的驱动轮的转速的速度检测器9,10,11,12，并且滑移确定装置18计算来自旋转的驱动轮的滑移比驱动轮和驱动轮的速度检测值，以确定驱动轮是否滑动。滑动判定装置18配备有用于使用预先设定的从动轮和驱动轮的车轮半径来检测从动轮和驱动轮的车轮速度的装置。用于检测车轮速度的装置调节用于计算从动轮的车轮速度检测值或驱动轮的车轮速度检测值的增益，使得从动轮的车轮速度检测值接近车轮速度检测值在驱动轮不滑动的状态下的驱动轮。版权所有（C）2009，JPO＆INPIT

8. 发明专利

JP2008011609A Electric-driven vehicle 有权
标题翻译：电动车
公开(公告)号：JP2008011609A
公开(公告)日：2008-01-17
申请号：JP2006177491
申请日：2006-06-28
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： KIKUCHI TERU , IKIMI TAKASHI , SHIMADA KEIZO , SUGAWARA NAOSHI
IPC分类号： B60L9/18 , H02P5/46
CPC分类号： B60W20/11 , B60K6/52 , B60L15/2036 , B60L2240/24 , B60L2240/423 , B60W10/08 , B60W20/00 , B60W30/045 , B60W2710/083 , B62D11/003 , B62D11/04 , B62D11/24 , Y02T10/6265 , Y02T10/645 , Y02T10/646 , Y02T10/648 , Y02T10/7275
摘要： PROBLEM TO BE SOLVED: To provide an electric-driven vehicle which can get driving power with other wheels when one wheel gets stuck in the mud, while improving turnability. SOLUTION: The electric-driven vehicle, which is equipped with a motor controller that controls the first and second motors of itself, is equipped with a steering angle detector which outputs the angle-detected-value of the steering of itself. The motor controller has a first torque command pattern to get the torque command of the first motor and the second torque command pattern to get the second motor. Using the steering angle detector, at left turn, it changes the first and second torque command patterns so that the second torque pattern may be larger in the magnitude of the torque command to the same angle than the first torque pattern, and at right turn, it changes the first and second torque command patterns so that the first torque pattern may be larger in the magnitude of the torque command to the same angle than the second torque pattern. COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：提供一种电动车辆，其在一个车轮卡在泥浆中时可以利用其他车轮获得驱动力，同时提高转向性。解决方案：配备有控制本身的第一和第二电动机的电动机控制器的电动车配备有转向角检测器，该转向角检测器输出其自身的转向角度检测值。电动机控制器具有第一转矩指令模式以获得第一电动机和第二转矩指令模式的转矩指令以获得第二电动机。使用转向角检测器，在左转时，它改变第一和第二转矩指令图案，使得第二转矩模式在转矩指令的幅度上可能比第一转矩模式具有相同的角度，而在右转时，它改变第一和第二扭矩指令模式，使得第一扭矩模式在扭矩指令的大小上可能比第二扭矩模式相同角度更大。版权所有（C）2008，JPO＆INPIT

9. 发明专利

JP2007259611A Electrically driven vehicle 有权
标题翻译：电动车
公开(公告)号：JP2007259611A
公开(公告)日：2007-10-04
申请号：JP2006081907
申请日：2006-03-24
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： KIKUCHI TERU , IKIMI TAKASHI , SHIMADA KEIZO , SUGAWARA NAOSHI
IPC分类号： B60L9/18
CPC分类号： B60T13/586 , B60L7/14 , B60L7/26 , B60L11/1803 , B60L15/2009 , B60L2220/12 , B60L2220/46 , B60L2240/12 , B60L2240/421 , B60L2240/423 , B60L2240/461 , B60L2240/465 , B60L2250/26 , B60T7/122 , B60T2201/06 , H02P3/025 , H02P21/00 , Y02T10/643 , Y02T10/644 , Y02T10/645 , Y02T10/7005 , Y02T10/72 , Y02T10/7275 , Y10T477/38
摘要： PROBLEM TO BE SOLVED: To achieve a start or a stop without backing up without requiring the cooperating control of a mechanical brake and a motor when an electrically driven vehicle starts or stops on a slope. SOLUTION: This electrically driven vehicle is provided with an induction motor for braking or driving wheels, a motor controller for controlling the induction motor, and a mechanical brake for braking the wheels. When the vehicle is in a stopping state in a state that the mechanical brake does not work, the motor controller applies a DC voltage of a frequency or an AC voltage between -1 and +1 Hz to a stator of the induction motor, and torque for stopping the vehicle is generated in the induction motor to keep the vehicle in the stopping state. COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：当电动车辆在斜坡上启动或停止时，不需要备份而不需要机械制动器和电动机的协调控制来实现启动或停止。解决方案：该电动车辆设置有用于制动或驱动车轮的感应电动机，用于控制感应电动机的电动机控制器和用于制动车轮的机械制动器。当车辆在机械制动器不工作的状态下处于停止状态时，电动机控制器向感应电动机的定子施加频率为-1和+1Hz的交流电压的直流电压，并且转矩在感应电动机中产生用于停止车辆以保持车辆处于停止状态。版权所有（C）2008，JPO＆INPIT

10. 发明专利

JP2003134890A WIND-POWER GENERATOR USING PERMANENT MAGNET TYPE OF SYNCHRONOUS GENERATOR, AND STARTING METHOD THEREFOR 审中-公开
公开(公告)号：JP2003134890A
公开(公告)日：2003-05-09
申请号：JP2001317928
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 , H02P9/00 , H02P9/08
摘要： PROBLEM TO BE SOLVED: To enable variable-speed drive of a generator, without having to use a generator speed sensor, in a wind-power generator which uses a permanent magnet type of synchronous generator. SOLUTION: In a wind-power generation system, where the rotor of the permanent magnet type of synchronous generator 2 is connected to the shaft of a windmill 1 and the first converter 3 is connected to the stator winding of this generator 2, a first speed estimating unit 10 estimates the speed of the generator 2, based on the voltage and current at the terminal of the generator, during the operation of the first converter 3. During stoppage of the first converter 3, a second speed estimator 17 estimates the speed of the generator 2, based on the voltage of the generator terminal.

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