摘要
为了改善用户侧电压质量与谐波问题,通过分析单相串联型有源电力滤波器(SAPF)的结构、原理及特点,提出了单相SAPF系统谐波检测的方法;同时借鉴单相SVPWM技术原理,将开关模式优化的SVPWM技术应用于单相SAPF系统中,提高了系统波形控制精度;利用Matlab软件,建立了基于上述谐波检测和系统波形控制的单相SAPF系统的仿真模型,并利用该模型对动态电压跌落与闪变等电压故障状态进行了动态补偿的仿真.仿真结果显示:本文提出的SAPF滤波系统不但具有良好的滤波性能,而且可以保障负载不受系统电压故障的影响,具有良好的工程应用前景.
By analyzing the single-phase series active power filter（SAPF） of the structure,a single-phase SAPF system harmonic detection method is proposed.Meanwhile,based on the principle of single-phase SVPWM technique,the control accuracy of system waveform is improved by applying the Optimal Switching Pattern SVPWM technique to a single-phase SAPF system.Finally,the simulation model of a single-phase SAPF system,which takes advantage of the harmonic detection and system waveform control techniques mentioned above,is established using Matlab software.And this model is used to simulate the dynamic compensation of the failure state of dynamic voltage,such as system voltage drop and flicker.The simulation results indicate that the SAPF filtering system presented in this paper has good filtering performance.Furthermore,this new technique can protect load from the influence of system voltage failure,and has a good prospect of engineering application in the future.
出处
《北京交通大学学报》
CAS
CSCD
北大核心
2012年第2期130-135,共6页
JOURNAL OF BEIJING JIAOTONG UNIVERSITY
