DocumentCode :
3745596
Title :
Double Fundamental Frequency PLL Based on Dual Bandpass Filter Structure
Author :
Ying Xiao;Zhaoyang Yan;Hongyan He;He Bai;Zhe Zhang;Yuepeng Wang
Author_Institution :
Key Lab. of Power Electron. for Energy Conservation &
fYear :
2015
Firstpage :
1126
Lastpage :
1129
Abstract :
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 band pass 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 band pass 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.
Keywords :
"Phase locked loops","Band-pass filters","Power harmonic filters","Harmonic analysis","Oscillators","Filtering theory","Frequency measurement"
Publisher :
ieee
Conference_Titel :
Instrumentation and Measurement, Computer, Communication and Control (IMCCC), 2015 Fifth International Conference on
Type :
conf
DOI :
10.1109/IMCCC.2015.242
Filename :
7406021
Link To Document :
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