Three-phase static series voltage regulator control algorithms for dynamic sag compensation

ISIE '99. Proceedings of the IEEE International Symposium on Industrial Electronics (Cat. No.99TH8465) Pub Date : 1999-07-12 DOI:10.1109/ISIE.1999.798665

G. Joós

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引用次数: 28

Abstract

Momentary interruptions and voltage sags are responsible for many of the power quality problems found in typical industrial plants. A common solution to this problem is the installation of uninterruptible power supplies (UPS). However, these are costly and require maintenance. A cost-effective alternative is the use of static series regulators rated a fraction of the load power. The regulators provide voltage support by injecting a voltage in series with the load. The structure presented in this paper consists in transformer coupled voltage source inverters fed from a diode bridge rectifier converter connected to the AC supply. The paper discusses implementation and control issues. Steady state compensation capability curves are presented. Are proposed control algorithms that ensure a fast dynamic voltage restoration and are insensitive to the type of faults, disturbances and harmonics present on the power network. Performance is illustrated for typical single and three-phase faults. The dynamic performance is verified on DSP based prototype power compensators.

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三相静态串联稳压器动态凹陷补偿控制算法

在典型的工业厂房中，瞬时中断和电压下降是造成许多电能质量问题的原因。解决这个问题的常见方法是安装不间断电源(UPS)。然而，这些都是昂贵的，需要维护。一种具有成本效益的替代方案是使用额定负载功率的一小部分的静态串联稳压器。稳压器通过与负载串联注入电压来提供电压支持。本文提出的结构由变压器耦合电压源逆变器组成，逆变器由连接交流电源的二极管桥式整流变换器供电。本文讨论了实施和控制问题。给出了稳态补偿能力曲线。提出了一种既能保证快速动态电压恢复，又对电网中存在的故障、干扰和谐波不敏感的控制算法。介绍了典型单相和三相故障的性能。在基于DSP的原型功率补偿器上验证了其动态性能。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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ISIE '99. Proceedings of the IEEE International Symposium on Industrial Electronics (Cat. No.99TH8465)

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