Title :
Analysis in DSC-PLL grid synchronization method under grid frequency variation
Author :
Jaedo Lee ; Hanju Cha
Author_Institution :
Dept. of Instrum. control & Electr. Syst, Korea Inst. of Nucl. Safety, Daejeon, South Korea
Abstract :
In this paper, a new frequency adaptive DSC-PLL is proposed to improve the grid synchronization when the grid voltage is polluted by harmonics, unbalanced conditions and frequency deviated circumstances. A design method for the proposed PLL adaptive to input frequency variation is discussed, and the frequency adaptive DSC-PLL is evaluated by simulations to show their capability for detecting different harmonic components in a highly polluted grid conditions. Simulation results show the significant effects that mitigate harmonics, unbalance components and detect frequency error through the proposed PLL.
Keywords :
harmonics suppression; phase locked loops; synchronisation; DSC-PLL grid synchronization method; delayed signal cancellation; frequency adaptive DSC-PLL; frequency deviated circumstances; grid frequency variation; grid voltage; phase locked loops; unbalanced conditions; DSC(Delayed Signal Cancellation); Frequency Locked Loop; PLL(Phase Locked Loop);
Conference_Titel :
Electrical Machines and Systems (ICEMS), 2014 17th International Conference on
Conference_Location :
Hangzhou
DOI :
10.1109/ICEMS.2014.7013605
