【作者】 陈勇；

【导师】 陈劲操；

【作者基本信息】 南京理工大学 ， 电力电子与电力传动， 2006， 硕士

【摘要】 随着现代科学技术的发展以及各种敏感性用电设备广泛的应用，电压跌落已经成为电能质量中一个显著的问题。动态电压调节器(Dynamic Voltage Restorer，简称DVR)可有效解决电压跌落、系统谐波、电压波动等动态及稳态电能质量问题。 论文在理论分析部分首先介绍了国内外对电压跌落问题的研究现状，对电压跌落基本概念进行了研究。其次对电压检测算法进行了深入的探讨，并比较了多种算法之间的优缺点。接着对SPWM型DVR补偿电压跌落的原理进行了详细的推导。然后对DVR进行电压补偿过程中涉及到的对功率管、补偿电压输出以及整个DVR系统等的控制策略进行了探讨和分析。最后对多系统电压跌落问题进行了初步探讨。 论文在仿真部分采用Simplorer6.0软件对瞬时比较法单相DVR系统、三相四线制DVR系统的补偿效果以及采用最小能量法控制补偿电压输出的单相DVR进行了仿真，仿真结果证明了理论分析的正确性。 硬件设计以及实验部分，论文设计了单相DVR装置的各部分硬件电路。采用TMS320F2812型DSP对DVR进行软件控制。样机的实验结果表明，动态电压恢复器装置能有效地补偿系统电压跌落，维持负载上电压的不变。更多还原

【Abstract】 Voltage sag had become a remarkable problem in power quality, along with the development of technology in modern times and the extensive application of various sensitivity electro-equipments. Dynamic voltage restorer can account for the problems such as voltage sag, system voltage harmonic, voltage fluctuation and so on.The article introduced the actuality of study on voltage sag home and overseas, and researched basic concepts on voltage sag firstly. Discussed arithmetic of voltage checking in-depth, and compared excellences and defects respectively secondly. Expatiated on the principle of SPWM typed DVR compensating voltage sag amply then. Provided discussion and analysis for the control of IGBT, output of compensatory voltage and the control strategy of the whole DVR system. Discussed voltage sag of multi-systems simply.The article gave simulations for the compensatory effect of single-phase DVR system and three-phase DVR system by the method of instant comparison, as well as the single-phase DVR with the method of minimum power with simplorer6.0. The results proved that the theory analysis were correct.The article designed every part of single-phase DVR, and processed software control to DVR with TMS320F2812. The experiment proved that DVR can compensate system’s voltage sag effectively and maintain the voltage above loads constantly.更多还原