Single Phase Phase-locked Loop Based on Self-adaptive Frequency Filter
[1]CHEN Hong-bing,MIN Jing-yan.Single Phase Phase-locked Loop Based on Self-adaptive Frequency Filter[J].Journal of Zhengzhou University (Engineering Science),2015,36(02):115-119.[doi:10.3969/j.issn.1671-6833.2015.02.025]
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Journal of Zhengzhou University (Engineering Science)[ISSN
1671-6833/CN
41-1339/T] Volume:
36
Number of periods:
2015 02
Page number:
115-119
Column:
Public date:
2015-04-30
- Title:
- Single Phase Phase-locked Loop Based on Self-adaptive Frequency Filter
- Keywords:
- self-adaptive frequency filter; single phase phase-locked-loop; frequency performance ; steady-stateprecision ; cut frequency
- CLC:
- TN713
- Abstract:
- There were detecting errors by a grid frequency ’s varying and not enough to lock phase free degreefor a single phase grid. In view of the above mentioned difficulties,the single phase phase-locked loop ( SP-PLL.) based on a self-adaptive frequency filter (SFF) was researched. Firstly,performances and self-adaptivelaw of the SFF were analyzed,and then the key parameters of the phase-locked loop were tuned to get the opti-mum performance. Finally,the researched phase-locked loop was simulated and investigated. Research resultshave proved the single phase phase-locked loop base on a SFF can precisely detect the phase and the frequen-cy of a single phase grid,and the error of detecting phase brought by the frequency varying has been elimina-ted. The correctness and the feasibility of the proposed phase-locked loop were verified through the simulateresults in the distorted grid and the frequency varying grid.
- References:
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