【作者】 梁海涛；

【导师】 苏建徽；

【作者基本信息】 合肥工业大学 ， 电力电子与电力传动， 2006， 硕士

【摘要】 随着现代技术的发展,电力用户对电能质量的要求不断提高。基于用户电力电子技术的电能质量补偿装置为解决电能质量问题提供了新的手段。动态电压恢复器(DVR)是目前补偿电压跌落最为有效的装置。它不仅可以解决电压跌落、凸起的动态电压质量问题,也可以补偿三相不平衡、电压谐波等稳态电压质量问题,是目前国内外的研究热点之一。 论文分析了DVR的工作原理和不同的主电路拓扑结构,并且研究了几种不同的补偿策略。电能质量问题的检测是影响装置补偿效果的关键环节,论文比较了多种算法的优缺点,对基于瞬时无功功率理论的几种算法进行了仿真研究,确定了一种改进型的d-q法。通过对前馈控制、反馈控制和前馈加反馈控制等几种控制策略的MATLAB仿真研究,选出了一种含PD校正环节的前馈加反馈的控制算法。 论文系统地阐述了DVR装置的各个组成部分,完成了装置的主电路和控制电路的设计工作。在控制器设计的基础上,论文利用DSP的开发平台CCS进行了系统的软件设计。最后,通过样机实验对DVR的工作原理进行了验证。更多还原

【Abstract】 Along with the development of modern technology, power customers have more and more severely requests of power quality. Power quality compensating devices based on Custom Power technology provide a novel method to solve the power quality problems. Dynamic Voltage Restorer (DVR) is considered as the most effective device to compensate the voltage sag. DVR is one of the hottest topic in this field, because it could compensate both steady state and dynamic voltage quality problems, such as voltage sag, voltage swell, the imbalance of three-phase voltage and harmonic.In the thesis the principle of DVR is analyzed, and different compensation schemes and topology of it is studied. The detection of voltage quality problem is the fatal factor to the effectiveness of DVR. By comparing with other methods and stimulating several approach based on instantaneous reactive power theory, an improved d-q method is selected. Different control methods such as feed-forward, feedback and the hybrid are studied by simulating with MATLAB. And a good control strategies is adopted which is the hybrid integrated with PD adjustment.The components of DVR are described, and the main circuit and its controller are designed. In addition the system software is developed on the DSP CCS development environment. In the end, the theory is validated by the result of experiment on the prototype.更多还原