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Study of capacitor energising transient limiter with a half-wave rectifying compensating voltage system

机译：半波整流补偿电压系统对电容器励磁瞬态限制器的研究

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摘要

This study presents a capacitor energising transient limiter (CETL) with a half-wave rectifying compensating voltage system. The proposed CETL provides a transient inductance to restrain capacitor energising transients at the instant of energisation. After completing the restraint, the limiter provides zero impedance based on the compensating voltage principle, and the capacitor seems to be connected directly to the system voltage source without requiring any control. Therefore in the steady state the capacitor current and voltage waveforms are undistorted, and no voltage rise occurs across the capacitor terminals. Further, this study offers a comparison of the levels of the total harmonic distortion (THD) in the capacitor voltage and current that occurs when different kinds of compensating voltage systems are used, and the relationship between THD and the resistance of the limiting reactor for the proposed CETL is simulated and discussed. In addition, this study also discusses that when the proposed CETL is applied to the low-voltage (LV) capacitor, voltage magnification appears on the capacitor because of the switching of the high-voltage (HV) utility capacitor. During the study period, a single-phase 220 V 0.9 kVAR capacitor was developed for demonstration, and the proposed method is verified by theory, in simulated results, and in field tests.
机译：这项研究提出了一种具有半波整流补偿电压系统的电容器激励瞬态限制器（CETL）。所提出的CETL提供了瞬态电感，以抑制在通电瞬间电容器通电的瞬变。完成约束后，限幅器根据补偿电压原理提供零阻抗，电容器似乎无需任何控制即可直接连接至系统电压源。因此，在稳定状态下，电容器电流和电压波形不会失真，并且电容器端子之间不会出现电压上升。此外，本研究还比较了使用不同类型的补偿电压系统时电容器电压和电流中总谐波失真（THD）的水平，以及THD与限幅电抗器电阻之间的关系。对拟议中的CETL进行了仿真和讨论。此外，本研究还讨论了当将建议的CETL应用于低压（LV）电容器时，由于高压（HV）公用电容器的切换，电容器上会出现电压放大现象。在研究期间，开发了一个单相220 V 0.9 kVAR电容器进行演示，并通过理论，仿真结果和现场测试验证了该方法的有效性。

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  • 来源
    《Power Electronics, IET》 |2012年第7期|p.1217-1225|共9页
  • 作者

    Tseng H.-T.; Chen J.-F.;

  • 作者单位

    Southern Taiwan Science Park Administration, National Science Council, Tainan City, Taiwan;

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