摘要
在电能质量调节装置中 ,基波分量的提取精度和速度在很大程度上影响其性能。根据最小二乘原理 ,提出一种提取基波分量的方法。方法精度高 ,跟踪性能好 ,对基波突变甚至频率波动有较快的响应时间和较好的跟踪性能。由该方法得到的基波相角可以作为系统的同步信号。对信号处理算法进行了数学推导和实验研究 ,并将该方法应用于有源滤波器实验装置中 ,实验结果验证了其有效性。
Based on the least-squares principle, a funda me ntal detection algorithm is proposed. The presented algorithm is capable to not only extract the fundamental component from the voltage or current signal contai ning the power harmonics, also track the fundamental frequency and phase which c an supply the synchronizing reference signal for the system. Its high filtering performance and fast dynamic response have been verified by the experiment.The p roposed method has been applied to a laboratory prototype of the current-source active filter.
出处
《电力系统及其自动化学报》
CSCD
2004年第6期34-37,共4页
Proceedings of the CSU-EPSA
基金
国家自然科学基金资助项目 (5 0 13 70 2 0 )
关键词
基波提取
最小二乘估计
频率跟踪
有源滤波
fundamental detection
least-squares principle
frequency tracking
active power filter
