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首页> 外文期刊>Electric power systems research >Compensation of voltage disturbances in distribution systems using single-phase dynamic voltage restorer
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Compensation of voltage disturbances in distribution systems using single-phase dynamic voltage restorer

机译：使用单相动态电压恢复器补偿配电系统中的电压干扰

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摘要

In this paper, a new topology is proposed for a single-phase dynamic voltage restorer (DVR) using direct ac/ac converter. This topology does not require dc-link energy storage elements. The proposed topology has a simple structure and can compensate several types of voltage disturbances such as voltage sags, swells, harmonics and flickers. This topology will not face any problem in long time compensation due to the fact that it provides the required energy directly through grid. The proposed topology can be easily extended to n-phase systems such as three-phase based on the same principle of the operation. In n-phase systems, the voltage sags and swells can be properly compensated regardless of the balanced or unbalanced operation. A new control method is also proposed for direct ac/ac converter in the proposed topology. The simulation and experimental results verify the effectiveness of the proposed topology and its control method in voltage restoration.
机译：在本文中，提出了一种使用直接ac / ac转换器的单相动态电压恢复器（DVR）的新拓扑。该拓扑不需要直流链路储能元件。所提出的拓扑结构简单，可以补偿多种类型的电压干扰，例如电压骤降，骤升，谐波和闪烁。由于这种拓扑结构直接通过电网提供了所需的能量，因此在长时间补偿中不会遇到任何问题。基于相同的操作原理，可以轻松地将提出的拓扑扩展到n相系统（例如三相）。在n相系统中，无论是否平衡运行或不平衡运行，均可以适当地补偿电压骤降和骤升。在提出的拓扑结构中，还提出了一种用于直接交流/交流转换器的新控制方法。仿真和实验结果验证了所提出的拓扑及其控制方法在电压恢复中的有效性。

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