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1. 发明授权

US06795287B2 Static excitation system having capability of eliminating shaft vibrations of a generator and overvoltage when underexited 有权
标题翻译：静态励磁系统具有消除发电机轴振动的能力和不足的过电压能力
公开(公告)号：US06795287B2
公开(公告)日：2004-09-21
申请号：US10342487
申请日：2003-01-15
申请人： Chan Ki Kim , Hong Woo Ryu , Jin Yang No , Bo Soon An , Seok Jin Lee , Jin Cheol Shin
发明人： Chan Ki Kim , Hong Woo Ryu , Jin Yang No , Bo Soon An , Seok Jin Lee , Jin Cheol Shin
IPC分类号： H02H1100
CPC分类号： H02P9/105
摘要： A static excitation system that can eliminate shaft vibrations of a generator and overvoltage when it is underexited is provided. The static excitation system includes an initial excitation equipment; a step-down transformer; a 3-phase diode bridge; a boost chopper provided with a transistor and a resister, and maintaining DC voltage to be constant; a DC chopper provided with a plurality of transistors and diodes, and supplying DC power to a rotor of a generator; a boost controller for controlling the boost chopper; and a DC chopper controller for controlling the DC chopper, wherein, overvoltage applied on the excitation system when underexcited is eliminated owing to the boost chopper preventing any changes at an output terminal of the generator from being transferred to the excitation system, and maintaining the excitation DC voltage to be constant; and also owing to the DC chopper which is capable of 4 quadrant operation, hereby pole slipping of the generator can be prevented.
摘要翻译：提供了一种能够消除发生器的轴振动并且在其不足时会产生过电压的静态励磁系统。静态励磁系统包括初始励磁设备; 降压变压器; 三相二极管桥; 提供有晶体管和电阻器的升压斩波器，并且保持DC电压恒定; 设置有多个晶体管和二极管的直流斩波器，向发电机的转子供给直流电力; 用于控制升压斩波器的升压控制器; 以及用于控制直流斩波器的直流斩波控制器，其中，由于升压斩波器消除了由于升压斩波器而在激励系统上施加的过电压，从而防止发电机的输出端子上的任何变化被传送到励磁系统，并保持励磁直流电压恒定; 并且由于能够进行4象限操作的直流斩波器，因此可以防止发电机的极滑动。

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