【作者】 周福诞；

【导师】 车延博；

【作者基本信息】 天津大学 ， 电力电子与电力传动， 2007， 硕士

【摘要】 在电力电子技术飞速发展的今天,各种非线性电力电子装置得到了广泛的应用,这些装置在带给我们方便的同时向公用电网内注入了大量的电流谐波。另一方面,由于信息技术的发展,各种基于计算机、微处理器控制的用电设备大量的投入使用,这些设备对电能质量要求较高,一旦出现电能质量问题,轻则造成设备故障停运,重则造成整个系统的损坏,由此带来的经济损失难以估量。因此,对电流谐波的治理越来越受到重视。有源电力滤波器APF(Active Power Filter)是治理电力系统谐波问题,改善电能质量的有效手段,有广阔的应用前景。本文以设计小型并联有源滤波器实验样机为主要工作,其目的是建立有源电力滤波器开发平台,为有源电力滤波器控制系统的开发提供硬件上的支持。本文首先系统地概括了有源电力滤波器的特点、分类;分析并联型APF结构、工作原理;介绍现有的几种主电路的拓扑结构;建立数学模型。其次对谐波检测原理和电流控制跟踪方法进行讨论并在MATLAB/Simulink环境中对三相四线制并联型有源电力滤波器进行仿真。最后设计了3KW并联型有源电力滤波器样机主电路参数,以三菱M16C单片机为主处理器、TMS320VC5402型DSP为从处理器,采用基于瞬时无功功率理论的谐波电流检测方法和瞬时比较的电流控制策略开发了有源电力滤波器控制电路,并且完成了调试工作,得到了初步的实验结果。通过对结果的分析,证明了样机设计思路、控制电路结构和所采用的理论的正确性。更多还原

【Abstract】 With the development of power electronics technology, a sharply increasing number of power electronics devices have been widely used nowadays. Although these power electronics devices make our life convenient, they inject much harmonic current to the power grid for their nonlinear characteristics. Another aspect, the development of information technology have made more and more equipments, which based on computer and microprocessor control technology, put in use. These equipments have a comparatively high requirement to power quality, which stop to work or evenly brake the wholly system once the power quality problem appears, the economic losses bringing about from this is difficult to estimate. Therefore, harmonic current compensation is regarded highly.Active Power Filter (APF) is one of the effective means for harmonic current compensation and power quality improving. The thesis takes the small capacities APF equipment designing as main job, whose purpose is that to build a platform and hardware support for APF’s research.Firstly, the thesis covers the characteristics and classifies of APF,analyzes shunt-APF’s structure and operating principle, introduces the topologies of it’s main circuit and builds mathematic model.Secondly, the method of harmonic current detection and compensating current control were discussed; The overall system has been modeled using MATLAB/Simulink, and simulation results have shown that the structure is reasonable.Finally, the parameters in main circuit of 3KW shunt-APF is designed, control system’s hardware is also realized based on M16C MCU and TMS320VC5402 DSP. In the control system the method of compensating current control is instantaneously comparing, and the method of harmonic current detecting is based on instantaneous reactive power theory. After debugging first step’s result was gotten, and it shows the designed structure is reasonable, the theories which were adopted are correct.更多还原