Double Fundamental Frequency PLL Based On Dual Bandpass Filter Structure
In order to solve the problem of synchronization between grid inverter and grid voltage,and improve the detection speed and the precision for the positive-sequence component.Based on dual bandpass filter structure,this paper puts forward a new type called double fundamental frequency phase locked loop (DFF-PLL) to measure the double fundamental frequency of positive-sequence component,this method can achieve fast and effectively synchronous with power grid.The principle of DFF-PLL is introduced in detail in this paper.Using a bandpass filter eliminates the DC bias and harmonics of input voltage.The performance of DFF-PLL is verified by using simulation and experimental results.Compared with traditional PLL,this method improves the detection speed and accuracy under unbalanced grid voltages.
unbalanced gird voltages bandpass filter double fundamental frequency phase-locked loop(DFF-PLL) detecte the positive-sequence component and negative-sequence component
Ying Xiao Zhaoyang Yan Hongyan He He Bai Zhe Zhang Yuepeng Wang
Key Lab of Power Electronics for Energy Conservation and Motor Drive of Hebei Province, Electrical Engineering Institute of Yanshan University, Qinhuangdao, China
国际会议
秦皇岛
英文
1126-1129
2015-09-18（万方平台首次上网日期，不代表论文的发表时间）