会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 2. 发明专利
    • Controlled dc power supply device
    • 控制直流电源装置
    • JPS5938816A
    • 1984-03-02
    • JP14928282
    • 1982-08-30
    • Hitachi Eng Co LtdHitachi Ltd
    • MAEKAWA AKITSUGUKAZAWA YOSHIAKITAKAHASHI TSUYOSHIYAGI YASUOMI
    • G05F1/56G05F1/52H05H1/18
    • G05F1/52
    • PURPOSE:To make a device compact, by connecting a controlling electronic device in series to a load on the opposite polarity side and connecting a rapid short-circuiting element in parallel to them, and operating the controlling electronic device near the earth potential. CONSTITUTION:A rapid-short-circuiting element 5 called ''clover circuit'' is connected in parallel to a voltage dividing circuit 15, a controlling electronic device 31, and a gyrotron 7 as the load. A circuit 16 controls the controlling electronic device 31 so that the voltage detected by the voltage dividing circuit 15 becomes a pattern voltage 34. A tetrode for high voltage is used as the controlling electronic device 31. An earth point is provided between the gyrotron 7 as the load and the controlling electronic device 31. The tetrode used as the controlling electronic device 31 is operated with a potential near the earth potential except the anode.
    • 目的:为了使设备紧凑,通过将控制电子设备串联连接到相反极性侧的负载并且将快速短路元件并联连接,并将控制电子设备操作在接地电位附近。 构成:称为“三叶草电路”的快速短路元件5并联连接到分压电路15,控制电子设备31和作为负载的回旋加速器7。 电路16控制控制电子设备31,使得由分压电路15检测到的电压变为模式电压34.使用用于高电压的四极作为控制电子设备31.接地点设置在陀螺仪7之间,作为 负载和控制电子设备31.用作控制电子设备31的四极杆的电位在除了阳极之外的接地电位附近操作。
    • 3. 发明专利
    • DE69406983T2
    • 1998-07-09
    • DE69406983
    • 1994-06-16
    • HITACHI LTD
    • WAKUI SHINICHIIDE KAZUMASAKOHARAGI HARUOTAKAHASHI MIYOSHIMIYAKAWA KADOYAGI YASUOMI
    • H02K1/26H02K3/16H02K3/487H02K19/26H02K19/00
    • The rotor 2 of a rotating field type turbine generator is provided with slots 3 for accommodating the field windings, wedges 4 positioned at the portions of the magnetic poles on the rotor 2 for holding the field windings and wedges 5 positioned between the magnetic poles on the rotor. These wedges 4 and 5 are constituted by metal bars without joints to enhance damper effect thereby. Magnetomotive forces due to higher harmonics, which causes temperature rise of the rotor 2 and torque ripple during starting with thyristors, induces an elliptic rotating magnetic field having the longer diameter on d axis extending in the direction of magnetomotive force induced by the field windings and the shorter diameter on q axis perpendicular to d axis, and thus a larger eddy current is induced flowing along q axis on the rotor 2 than that flowing along d axis. Therefore the thickness d' in radial direction of the wedges 5 positioned between the magnetic poles on the rotor 2 is determined larger than the thickness d in radial direction of the wedges 4 positioned at the portions of the magnetic poles on the rotor 2 to reduce the resistance of the wedges 5 and to easily lead the eddy current flowing in the axial direction of the rotor 2, thereby a good thermal balance over the entire portions on the rotor 2 is achieved.