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首页> 外文期刊>Power Electronics, IET >Three-phase thyristor controlled reactor using two sets of delta connected switches with low current harmonics
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Three-phase thyristor controlled reactor using two sets of delta connected switches with low current harmonics

机译：三相晶闸管控制电抗器，使用两组低电流谐波的三角形连接开关

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摘要

This work presents a three-phase thyristor-controlled reactor (TCR), which makes use of two constituent banks of controlled reactors, with coordinated control of the triggering angle of both the banks. The first reactor bank has a set of 'delta' connected back-to-back thyristor switches with a balanced set of reactors in series with each switch, while the second reactor bank also has back-to-back thyristor switches in 'delta' connection but with a balanced set of reactors in series with each line. It is demonstrated that this arrangement prevents some major current harmonics in the supply line by proper choice of the maximum kVAr ratio between the two reactor banks. The use of delta connected switches in both banks reduces the current rating of the switches. Hence, without using any phase-shifting isolation transformer or filters, the proposed technique permits control of reactive power over a reasonable range, with a low current total harmonic distortion meeting existing harmonics standards. Simple construction and operation of the proposed TCR make it an attractive and cheaper solution. The modelling, analysis and performance assessment of the new TCR are presented.
机译：这项工作提出了一个三相可控硅控制电抗器（TCR），该电抗器利用了两个受控电抗器组成的组，并通过协调控制两个组的触发角。第一个电抗器组具有一组“三角形”背靠背晶闸管开关，每个开关均串联有一组平衡电抗器，而第二个电抗器组也具有“三角形”连接背对背晶闸管开关但每条生产线都有一组串联的平衡电抗器。通过适当选择两个电抗器组之间的最大kVAr比，可以证明这种布置可以防止电源线中的一些主要电流谐波。两个组中都使用三角形连接的开关会降低开关的额定电流。因此，在不使用任何相移隔离变压器或滤波器的情况下，所提出的技术允许在合理范围内控制无功功率，并且低电流总谐波失真可以满足现有谐波标准。所提出的TCR的简单构造和操作使其成为一种有吸引力且便宜的解决方案。介绍了新TCR的建模，分析和性能评估。

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