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    • 1. 发明专利
    • D.c. power supply device for plasma ash melting furnace and operation method of plasma ash melting furnace
    • 用于等离子熔融炉的电源装置和等离子熔融炉的操作方法
    • JP2006040619A
    • 2006-02-09
    • JP2004215812
    • 2004-07-23
    • Hitachi Eng Co LtdHitachi LtdMitsubishi Heavy Ind Ltd三菱重工業株式会社日立エンジニアリング株式会社株式会社日立製作所
    • MIYAJIMA NORIYUKISONOBE KAORUYABUKI MASAAKIMIURA AKIZOWAKAHARA TOSHIHIROSAKAKIBARA SHINICHI
    • H05B7/18F27D11/08F27D11/10H02M7/12H05B7/144
    • Y02P10/256Y02P10/259
    • PROBLEM TO BE SOLVED: To solve a problem where an arc is not generated between a main electrode and a furnace bottom electrode of a plasma ash melting furnace and a side arc is generated between the main electrode and a furnace wall outer shell conductive part; and to solve a problem where the size of a device is increased when an auxiliary power supply circuit is formed for conduction confirmation in restart to increase a cost. SOLUTION: This D.C. power supply device 10 is connected between the main electrode 51 and the furnace bottom electrode 52 of the plasma ash melting furnace 50. An initial charge circuit 30 is connected to a smoothing capacitor 16 of its main rectification circuit 15; the smoothing capacitor 16 is so controlled as to be previously charged to a predetermined low voltage in starting operation; and a conduction detection means 31 for detecting a conduction state between the main electrode 51 and the furnace bottom electrode 52 from output variation of a chopper circuit 17 is formed. After conduction confirmation, the smoothing capacitor 16 is charged from the main rectification circuit 15, and ash is heated and melted by a plasma arc generated by applying a capacitor voltage between the electrodes by a direction of a plasma control panel 1. COPYRIGHT: (C)2006,JPO&NCIPI
    • 解决的问题:为了解决在等离子灰熔化炉的主电极和炉底电极之间不产生电弧的问题,并且在主电极和炉壁外壳之间产生侧电弧导电 部分; 并且为了解决在重新启动时形成辅助电源电路用于导通确认的装置的尺寸增加以增加成本的问题。

      解决方案:该直流电源装置10连接在等离子灰熔化炉50的主电极51和炉底电极52之间。初始充电电路30连接到其主整流电路15的平滑电容器16 ; 平滑电容器16被控制为在启动操作中预先充电到预定的低电压; 并且形成用于从斩波电路17的输出变化检测主电极51和炉底电极52之间的导通状态的导通检测装置31。 在导通确认之后,从主整流电路15对平滑电容器16进行充电,并且通过等离子体控制面板1的方向在电极之间施加电容器电压而产生的等离子体电弧来加热和熔化灰分。 (C)2006,JPO&NCIPI

    • 4. 发明专利
    • Driving controller for rotary electric machine
    • 旋转电机驱动控制器
    • JP2010011688A
    • 2010-01-14
    • JP2008170395
    • 2008-06-30
    • Hitachi Ltd株式会社日立製作所
    • YOSHIDA TAKESHIMIYAJIMA NORIYUKINOUCHI TAKAO
    • H02P29/00B60K6/445B60L3/04B60L11/14B60W10/08B60W20/00H02P5/00
    • B60L11/123B60L3/003B60L3/0061B60L3/0069B60L3/0092B60L3/04B60L11/14B60L15/20Y02T10/6217Y02T10/645Y02T10/7077Y02T10/7275
    • PROBLEM TO BE SOLVED: To provide a motor generator driving controller which can more certainly prevent the expansion of failure of elements of a motor generator driving circuit due to a short circuit current during degenerative operation. SOLUTION: The rotating speeds of two motor generators and a trouble in inverter devices connected to the motor generators respectively are detected by a degenerative operation indication section 310. When any trouble is detected, a controller 300 stops the operation of the inverter for which a trouble has been detected and outputs an operation command which brings the motor generator connected to the stopped inverter device into such a state that it may rotate following the movement of the other motor generator. When the rotating speed N1 of the motor generator being thus rotated exceeds a predetermined allowable rotating speed N1max, a rotating speed indication section 330 outputs such an operation command (rotation control) as to reduce the rotating speed N2 of the motor generator connected to the inverter device with no trouble. COPYRIGHT: (C)2010,JPO&INPIT
    • 要解决的问题:提供一种电动发电机驱动控制器,其可以更可靠地防止由于退化操作期间的短路电流引起的电动发电机驱动电路的元件的故障的扩大。 解决方案:通过退化操作指示部310检测两台电动发电机的转速和连接于电动发电机的逆变器装置的故障。当检测到故障时,控制器300停止逆变器的动作 检测出故障,并且输出使与停止的逆变器装置连接的电动发电机的动作指令成为能够随着另一个电动发电机的移动而旋转的状态。 当这样旋转的电动发电机的转速N1超过预定的允许转速N1max时,转速指示部330输出这样的操作指令(旋转控制),以减少连接到逆变器的电动发电机的转速N2 设备没有麻烦。 版权所有(C)2010,JPO&INPIT
    • 7. 发明专利
    • AIR CONDITIONER
    • JPH11337148A
    • 1999-12-10
    • JP14690798
    • 1998-05-28
    • HITACHI LTD
    • TAKANUMA AKIHIROMIYAMOTO YOSHIMIMIYAJIMA NORIYUKI
    • F24F11/02
    • PROBLEM TO BE SOLVED: To obtain an air conditioner which can exhibit air conditioning power satisfactory for user at the time of quick air conditioning by supplying a current higher by a specified level than the upper limit of commercial power supply current at the time of starting air conditioning. SOLUTION: When a discharge circuit 18 is operated by turning a switch 23 on and turning switches 21, 22 off to supply a compressor motor 10 with a current of 25A or above from a battery 15, a normally unattainable high air conditioning power can be exhibited. When that control system is employed at the time of starting, the time to be elapsed before the room temperature reaches a target level can be shortened significantly. A higher air conditioning power can be attained theoretically as compared with operation with commercial power supply current when the current being drained from the battery 15 is 20A or above, but a current of 25A or above must be drained from the battery 15 for a user to feel comfortableness. A power module withstanding against current of 25A or above is required for quick air conditioning.
    • 9. 发明专利
    • CAPACITOR SYSTEM
    • JP2000021457A
    • 2000-01-21
    • JP18858198
    • 1998-07-03
    • HITACHI LTD
    • MIYAMOTO YOSHIMIMIYAJIMA NORIYUKI
    • H01M10/60H01M10/42H01M10/613H01M10/615H01M10/627H01M10/633H01M10/6563H01M10/6566H01M10/50H01M10/40
    • PROBLEM TO BE SOLVED: To efficiently charge/discharge a battery at a safe temperature by charging a capacitor means with night electric power, arranging a temperature measuring means, a cooling means and a heating means, operating the cooling means only at discharge time by supplying electric power from the capacitor means, and operating the heating means only at charging. SOLUTION: A composite battery is formed by connecting respective lithium ion secondary batteries 1a, 1b, 1c in series with each other to constitute a capacitor means 2 of a capacitor system being charged has night electric power and discharging except for night electric power supply time. In charging/discharging processing, first the ambient temperature of the batteries 1a, 1b, 1c is measured by a temperature sensing means 4, and when the temperature is higher than a first lighting temperature or more, air is blown by rotating a battery cooling fan 12 when the capacitor system discharges so as to cool the respective batteries with air. When the battery ambient temperature is not more than a second limiting temperature, electric current is carried to one or more in heating means 6a, 6b, 6c when the capacitor system is charged so as to heat the batteries 1a, 1b, 1c.