河南理工大学学报（自然科学版）2018，Vol.37Issue(1)：97-102,6.DOI:10.16186/j.cnki.1673-9787.2018.01.015
具有频率自适应改进的FBD谐波检测方法的研究
Research on the improved FBD harmonic detection method with frequency adaptive algorithm
摘要
Abstract
To solve the problem of error and delay caused by the phase-locked loop in the traditional FBD detection method,an improved FBD harmonic detection method without phase locked loop is proposed.The sinusoidal amplitude integrator(SAI) is used to replace phase locked loop (PLL),and the amplitude of the grid voltage is integrated under αβ coordinate system for the sake of signal synchronized with the fundamental positive sequence voltage.Then the harmonic component can be detected.At the same time,in order to avoid the influence of power grid frequency fluctuation on harmonic detection accuracy,a frequency locked loop is introduced to structure frequency adaptive link.Compared with the traditional detection methods,this method has simple structure and fast dynamic response.The simulation experiments show that the harmonic current component can be detected accurately and quickly under the circumstances of the grid voltages unbalanced or frequency fluctuating.关键词
有源滤波器/FBD法/正弦幅值积分器/频率自适应Key words
active filter/FBD harmonic detection/sinusoidal amplitude integrator/frequency adaptation分类
信息技术与安全科学引用本文复制引用
史丽萍,史干东,韦彬,师珂..具有频率自适应改进的FBD谐波检测方法的研究[J].河南理工大学学报（自然科学版）,2018,37(1):97-102,6.基金项目
高等学校博士学科点专项科研基金资助项目(20110095110014) （20110095110014）
教育部科学技术研究重大项目(311021) （311021）
