基于标准正弦波的i_p-i_q谐波电流检测方法  

I_p-i_q harmonic current detection method based on standard sine wave

作　　者：韩素敏[1] 王要东[1] 杨常星[1] 

机构地区：[1]河南理工大学电气工程与自动化学院,河南焦作454000

出　　处：《河南理工大学学报（自然科学版）》2013年第2期205-208,共4页Journal of Henan Polytechnic University（Natural Science）

基　　金：河南省重点科技攻关项目(0623021700);河南省教育厅自然科学研究项目(2011A470004);河南理工大学青年基金资助项目(Q2011-49);河南理工大学第10期SRTP研究项目(10-3-005)

摘　　要：针对谐波抑制中谐波电流检测不够准确的问题,提出基于标准正弦波的ip-iq谐波电流检测方法.该方法以瞬时功率理论为基础,在传统ip-iq谐波电流检测法中引入标准正弦波直接构成单位C矩阵,标准正弦波以电网电压基波正序分量的频率f和初相位θ为参数生成.因为标准正弦波的频率非常稳定,所以基波和谐波检测较为准确,同时避免出现间谐波.建立了模型,并利用Simulink仿真对比分析,结果表明,此方法提高了基波电流和谐波电流检测精度.Due to the inaccuracy of harmonic current detection in harmonic suppression, the ip-iq harmonic cur- rent detection method based on the standard sine wave is proposed. The method, which is the basis of instan- taneous power theory, introduces the standard sine wave to constitute the C matrix in the traditional ip-iq har- monic current detection method. The standard sine wave is generated by inputting the two parameters of fre- quency f and initial phase of the fundamental positive sequence component into the function generator. Be- cause the frequency of the standard sine wave is very stable, the fundamental and harmonic current detection is thusly very accurate. The model is also constructed and simulated; the results show that this method can greatly improve the detection accuracy of the fundamental current and harmonic current.

关 键 词：IP-IQ 谐波电流检测 瞬时功率理论 标准正弦波 谐波 

分 类 号：TM935.21[电气工程—电力电子与电力传动]