摘要
非线性负载尤其是电力电子装置的广泛应用,导致了电网中含有大量谐波,这些谐波给电力系统带来了严重的污染,从而使电能质量受到严重的影响。有源电力滤波器(APF)作为一种高效治理谐波的电力电子装置得到越来越广泛的关注。文中构造了有源电力滤波器采用基于瞬时无功理论的ip-iq检测法来检测谐波电流,采用滞环比较法来跟踪指令电流。通过MATLAB/SIMULINK搭建仿真模型,对电力系统中存在的负载是否平衡和电网是否平衡4种情况进行仿真研究。仿真实验表明:APF针对于这4种状况能够消除电流谐波,使电流中的谐波含量减少了75%以上,使得电流总畸变率大大降低,与传统的LC无源滤器相比,有源电力滤波器具有深入的研究意义和广泛的实用价值。
The widespread application of non-linear loads especially power electronic devices generate a large number of harmonics in the power grid. These harmonics cause serious pollution for the power system,so that the power quality is affected seriously. Active Power Filter（ APF） as the power electronic devices to manage harmonics effectively has been a hot topic. The design of active power filter detects the harmonic current by using ip- iqmethod based on instantaneous reactive power theory,and tracks the current instruction by using hysteresis comparative method. The simulation results based on MATLAB /SIMULINK show that the APF can eliminate the current harmonics. Harmonics in the current are reduced by 75% and the Total Harmonic Distortion（ THD） is reduced greatly. Active power filter has significance and practical value compared to the traditional passive LC filters.
出处
《西安科技大学学报》
CAS
北大核心
2016年第2期275-281,共7页
Journal of Xi’an University of Science and Technology
基金
陕西省工业科技公共项目(2015GY020)
