矿用三电平SVG中点均压与死区补偿控制策略研究

doi:10.11799/ce201503033

煤炭工程 ›› 2015, Vol. 47 ›› Issue (3): 100-102.doi: 10.11799/ce201503033

矿用三电平SVG中点均压与死区补偿控制策略研究

庄园¹,王聪²

1. 中国矿业大学（北京）
2. 中国矿业大学（北京）机电学院

收稿日期:2014-10-20 修回日期:2014-09-11 出版日期:2015-03-10 发布日期:2015-03-25
通讯作者: 庄园 E-mail:zhuangyuan19900101@163.com

Neutral Point Voltage Balancing and Dead-Time Compensation Based on Current Space Vector for Three-level SVG Used in Mine

Received:2014-10-20 Revised:2014-09-11 Online:2015-03-10 Published:2015-03-25

摘要/Abstract

摘要： 针对基于二极管箝位型（NPC）逆变器主拓扑的矿用三电平静止无功发生器（SVG）直流侧中点电压平衡与死区效应问题进行了理论分析，提出了一种基于调整驱动脉冲的中点电压平衡和死区效应补偿的控制策略，通过一个算法同时实现对中点电压平衡和死区效应补偿的控制目标。该控制策略引入两相静止坐标系中的电流空间矢量，通过判断其所在扇区来准确、简便地判断SVG三相交流电流的极性，作为平衡SVG直流侧中点电压和补偿死区效应的依据。最后，基于TMS320F28335型DSP搭建了660V 100KVA矿用三电平SVG样机。实验结果表明，提出的控制策略可以有效实现SVG直流中点电压平衡，同时有效减小死区效应造成的输出电流畸变现象。

关键词: 静止无功发生器, 中点电压平衡, 死区补偿, 电流空间矢量

Abstract: Unbalance of the neutral point voltage at DC-side and the dead-time effect of three-level SVG based on the NPC inverter topology is discussed. And a control strategy based on trigger pulse adjustment to balance the neutral point voltage and compensate the dead-time effect is proposed. In this way, neutral point voltage balancing and dead-time effect compensation can be achieved simultaneously using one single algorithm. This control strategy adopts the current space vector in the two-phase static coordinate system to judge the directions of the three-phase output current of the SVG with which to implement neutral point voltage balancing and dead-time effect compensation. At last, an 1140V 100kW SVG prototype is developed with DSP TMS320F28335. The results of the experiment verify the validity of the proposed control strategy.

Key words: static var generator, neutral point voltage balancing, dead-time compensation, current space vector

中图分类号:

TD611|TM53

庄园，王聪，沙广林，等. 矿用三电平SVG中点均压与死区补偿控制策略研究[J]. 煤炭工程, 2015, 47(3): 100-102.

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矿用三电平SVG中点均压与死区补偿控制策略研究

Neutral Point Voltage Balancing and Dead-Time Compensation Based on Current Space Vector for Three-level SVG Used in Mine

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