摘要
提出了一种基于系统电流检测的并联有源电力滤波器数字控制方法,应用于以PWM(PulseWidthModulation)电压源型变流器为主电路结构的并联有源电力滤波器中,对三相三线制系统中非线性负载的谐波和无功电流有理想的补偿效果。该控制方法只需检测系统电流和直流侧电压,无需参考电流,与传统控制方法相比具有检测量少、计算简单等优点。文章给出了理论分析和仿真结果,并以ADMC326(DSP)为控制核心设计了一套三相并联有源滤波器实验装置。仿真和实验结果证明了所提出控制方法的可行性和有效性。
On the basis of system current detection a novel digital control method for shunt active power filter is proposed.Applying the proposed method to the shunt active power filter in which the pulse width modulation(PWM) voltage source converter is adopted in the main circuit,in the three-phase three-wire system the active power filter can effectively eliminate harmonics of nonlinear load and compensate its reactive current.In this control method only system current and DC side voltage are to be detected and no...
出处
《电网技术》
EI
CSCD
北大核心
2005年第24期49-53,共5页
Power System Technology
关键词
有源电力滤波器
谐波
数字控制
脉宽调制
电力系统
Active power filter
Harmonics
Digital control
Pulse width modulation
Power system
