摘要
针对有源电力滤波器进行谐波检测、补偿过程中存在的延时滞后的问题,提出以基于瞬时无功功率的谐波检测理论为基础,使用预置微量补偿相位的方式改善测量结果。首先分析了瞬时无功功率的ip-iq算法检测谐波的基本原理,指出了在实际应用中的不足;其次引入了相位补偿角并进行了计算推导;最后使用Matlab仿真工具对预置补偿角加入的前后波形进行模拟仿真,仿真结果证明预置补偿角可以有效的提高补偿实时性,改善基波波形畸变,从而验证了该方法的实际可操作性。
For the phenomenon of time delay and lagging of harmonic detection and compensation in active power filter, a method for presetting compensatory angle based on instantaneous reactive power theory is given to improve the results of harmonic current detection. The paper begins with an analysis of the principle of ip-iq algorithm for harmonic current detection based on in- stantaneous reactive power and points out the disadvantages of the algorithm in practical application. And then, a phase compen- sation angle is introduced for computational deduction. Finally, waveform before and after introducing compensation angle is simulated with Matlab software. The simulation results show that a method for presetting compensation angle can improve real-time compensation and the distortions of the waveform of fundamental current, and thus the results verify the feasibility of the method.
出处
《现代电子技术》
2013年第3期145-147,共3页
Modern Electronics Technique
关键词
瞬时无功功率
ip-iq算法
谐波检测
预置补偿角
instantaneous reactive power
ip-iq algorithm
harmonic detection
preset compensatory angle
