专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US5818208A Flicker controllers using voltage source converters 失效
标题翻译：使用电压源转换器的闪烁控制器
公开(公告)号：US5818208A
公开(公告)日：1998-10-06
申请号：US770089
申请日：1996-12-19
申请人： Hisham A. Othman , Rajkumar Vedam
发明人： Hisham A. Othman , Rajkumar Vedam
IPC分类号： G05F1/66 , H02J3/18 , G05F1/70
CPC分类号： H02J3/1842 , Y02E40/22
摘要： Voltage flicker is a power quality problem in power distribution circuits which is caused by the operation of fluctuating loads such as AC and DC electric arc furnaces, spot welders, starting of large ac motors, and the like. Converters based on Voltage Source technology (VSC) connected in shunt close to the fluctuating load are found to have the capability of reducing the voltage flicker level. Flicker control systems responsive to the active and reactive power components are used to exploit the capabilities of VSC in accordance with the invention. The flicker control systems reduce the voltage flicker observed at the point of common coupling by adapting, e.g., H-infinity, Linear Quadratic Gaussian, Minimum Variance Control, and self-tuning design methods for flicker control in power systems having fixed or self-tuning flicker controller parameters.
摘要翻译：电压闪烁是由交流和直流电弧炉，点焊机，大型交流电动机起动等波动负载的动作引起的配电电路中的电力质量问题。发现基于电压源技术（VSC）的转换器连接在接近波动负载的分流器中，具有降低电压闪烁电平的能力。使用响应于有功功率和无功功率组件的闪烁控制系统来利用根据本发明的VSC的能力。闪烁控制系统通过适应例如H-infinity，线性二次高斯，最小方差控制和用于具有固定或自调谐的电力系统中的闪烁控制的自整定设计方法来降低在公共耦合点处观察到的电压闪烁闪烁控制器参数。

2. 发明授权

US5804949A Thyristor-controlled series capacitor triggering system 失效
标题翻译：晶闸管控制串联电容触发系统
公开(公告)号：US5804949A
公开(公告)日：1998-09-08
申请号：US409354
申请日：1995-03-23
申请人： Hisham A. Othman , Kevin J. Timko
发明人： Hisham A. Othman , Kevin J. Timko
IPC分类号： H02J3/18 , G05F1/70
CPC分类号： H02J3/1807 , Y02E40/14
摘要： A trigger control system for a thyristor-controlled series capacitor (TCSC) is disclosed. In one application, a power system 10 is coupled to a load 12 by a series capacitor 14 connected in parallel to a thyristor unit 16 and inductor 17. The thyristors are triggered by the control system 18, which includes a first circuit 20 that generates signals proportional to the peak of the line currents, a stabilizer circuit 22, an adder 24, a look-up table 26, a conversion circuit 28, a pulse generator 30, a phase-locked loop (PLL) 32, a ramp generator 34, a trigger window circuit 36, and a three input AND gate 38 the output of which is a grid pulse signal 40 that triggers the thyristor unit 16. The control system diminishes power swing oscillations and subsynchronous resonance oscillations.
摘要翻译：公开了一种用于晶闸管控制串联电容器（TCSC）的触发控制系统。在一个应用中，电力系统10通过与晶闸管单元16和电感器17并联连接的串联电容器14耦合到负载12.晶闸管由控制系统18触发，该控制系统18包括产生信号的第一电路20 与线电流的峰值成比例，稳定器电路22，加法器24，查找表26，转换电路28，脉冲发生器30，锁相环（PLL）32，斜坡发生器34，触发窗口电路36和三输入与门38，其输出是触发晶闸管单元16的电网脉冲信号40.控制系统减小功率摆幅振荡和次同步谐振。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式