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    • 4. 发明授权
    • Excitation system for synchronous machine
    • 同步电机励磁系统
    • US07508158B2
    • 2009-03-24
    • US11647148
    • 2006-12-29
    • Yoichi KatoSatoshi Kitamura
    • Yoichi KatoSatoshi Kitamura
    • H02P1/46
    • H03K17/725H02P25/024H02P27/16H03K17/125
    • A synchronous machine regulator is provided to simplify an adjustment work of current distribution to thyristors, the synchronous machine regulator having a circuit board 32 mounting a gate drive circuit 33 for supplying a gate pulse to each of thyristor bridges constituting a plurality of thyristor rectifiers 44 connected in parallel and supplying excitation current to a field winding 2 of a synchronous machine 1, and phase control means 34 for controlling a phase angle of each gate pulse to be supplied to each thyristor, wherein the current distribution to thyristors is controlled by the phase control means 34.
    • 提供同步电机调节器以简化对晶闸管的电流分配的调整工作,同步电机调节器具有安装栅极驱动电路33的电路板32,栅极驱动电路33用于向构成连接的多个晶闸管整流器44的晶闸管桥供应栅极脉冲 并联并将励磁电流提供给同步电机1的励磁绕组2,以及相位控制装置34,用于控制要提供给每个晶闸管的每个栅极脉冲的相位角,其中通过相位控制来控制对晶闸管的电流分配 意味着34。
    • 9. 发明授权
    • Silicon carbide (SIC) gate turn-off (GTO) thyristor apparatus and method for high power control
    • 碳化硅(SIC)栅极截止(GTO)晶闸管器件及其大功率控制方法
    • US06472686B1
    • 2002-10-29
    • US09677650
    • 2000-10-03
    • Pankaj B. Shah
    • Pankaj B. Shah
    • H01L310312
    • H01L29/66363H01L29/1608H01L29/744H03K17/0403H03K17/125
    • A Silicon Carbide (SiC) Gate Turn-Off (GTO) thyristor is formed of a substrate having at least three epi-layers provided thereon as first, second and third doped regions, respectively, and the substrate being a fourth doped region, wherein the at least four doped regions alternate between a p-type doping and an n-type doping, with the regions being at least partially overlaid. An anode is arranged on the first region, and a base is arranged on the second region. A controlling gate is arranged on the third region, and a cathode is arranged on the fourth region. A current divider divides the load current between the anode and the base. This reduces the voltage drop of a portion of the load current passing through the thyristor, allowing for the switching of higher current densities than in prior art thyristors, faster switching speeds and reduced junction temperatures.
    • 碳化硅(SiC)栅极截止(GTO)晶闸管分别由其上设置有至少三个外延层的衬底形成,作为第一,第二和第三掺杂区,衬底是第四掺杂区,其中, 至少四个掺杂区域在p型掺杂和n型掺杂之间交替,其中区域至少部分地覆盖。 阳极设置在第一区域上,基底设置在第二区域上。 控制栅极设置在第三区域上,阴极布置在第四区域上。 电流分压器分隔阳极和基座之间的负载电流。 这降低了通过晶闸管的负载电流的一部分的电压降,允许比现有技术的晶闸管更高的电流密度的切换,更快的开关速度和降低的结温。