【作者】 王成；

【导师】 魏萍；

【作者基本信息】 南昌大学 ， 电力电子与电力传动， 2010， 硕士

【摘要】 近几年来,伴随着非线性电力电子器件广泛应用,电网中产生了大量的谐波,无源滤波器已不能正常满足电力用户对电能质量的要求,有源电力滤波器可以克服无源滤波器谐波抑制的缺点,以其卓越的滤波性能被受广泛关注。有源电力滤波器通过向系统提供一个与谐波幅值大小相等并且相位方向正好相反的补偿电流,来治理谐波和进行无功补偿。本文首先对有源电力滤波器当前的研究现状和未来发展的趋势进行阐述,之后分别介绍了它的各种类型及其拓扑结构,重点分析研究了并联型有源滤波器基本工作原理及数学模型。其次,本文详细分析了并联型有源电力滤波器的控制策略,包括补偿电流跟踪控制和直流侧电压控制。最后确定选用三角波比较控制法并对直流侧电压采用PI闭环控制。最后,使用MATLAB分别对无源部分和有源部分模型进行仿真。仿真结果表明,本文提出检测方法和控制方法的正确性和有效性。更多还原

【Abstract】 In recent years, with the proliferation of nonlinear loads such as power electronic equipments, the amount of harmonic current has increased. The traditional passive filter could not meet the user demand of power quality. Active Power Filter may overcome the disadvantages of the traditional approaches for eliminating harmonics. With the superexcellent performance, APF has obtained more attention. Active power filter occur the compensative current that is equal to harmonic current but opposite direction that is regarded as a new equipment of eliminating harmonic, aiming to eliminate the harmony current and reactive component given to by the load.Secondly, the compensative current control strategy and the direct current side voltage control strategy of the active power filter is analyzed in detail. Triangle wave compare control is adopted in the compensative current control method and PI closed loop control is adopted in the direct current side voltage control adopts.Thirdly, the simulation models is simulated by using the system simulation of MATLAB. The detection method and the control strategy proposed are tested. Results of the simulation are verified validity and effectiveness.更多还原