摘要
在瞬时无功功率理论的基础上,提出一种基于改进型ip-iq谐波电流检测方法的有源滤波器。改进型检测方法用简单的积分、延时加增益环节来代替传统ip-iq方法中的低通滤波器,将检测延时减少到1/6个电源周期。给出了在S im u link环境下相应仿真模型的建立方法,并对其进行了仿真研究。结果不仅表明这种有源滤波器能够实时、有效地补偿系统的谐波和无功电流,而且验证了所建立的仿真系统的有效性。
On the basis of instantanous reactive power theory,an active filter based on modified ip-iq harmonic current test method is proposed. The modified test method is used to replace low-pass filter in traditional ip-iq by simple integral,time-delay plus gain. The test time-delay is reduced to 1/6 power supply period. A building-up method of corresponding emulation simulation in simulink is given and study the simulation. The result shows that the active filter can real-time and efficiently compeusate the system harmonic wave and reactive current and it verifies availability that the emulation system is built.
出处
《电气开关》
2007年第6期16-18,共3页
Electric Switchgear
