TY - JOUR
T1 - Frequency-Locked Loop-Based Estimation of Single-Phase Grid Voltage Parameters
AU - Ahmed, Hafiz
AU - Amamra, Sid Ali
AU - Bierhoff, Michael
PY - 2019/11/1
Y1 - 2019/11/1
N2 - Estimation of amplitude, instantaneous phase, and frequency of a single-phase grid voltage signal are studied in this letter. The proposed approach uses a novel circular limit cycle oscillator (CLO) coupled with a frequency-locked loop. Due to the nonlinear structure of the CLO, the proposed frequency adaptive CLO technique is robust against various perturbations faced in the practical settings, e.g., the discontinuous jump of phase, frequency, and amplitude. The global stability analysis of the CLO and local stability analysis of the frequency adaptive CLO are performed. Experimental results demonstrate the effectiveness of the proposed technique over a very recent technique proposed in the literature.
AB - Estimation of amplitude, instantaneous phase, and frequency of a single-phase grid voltage signal are studied in this letter. The proposed approach uses a novel circular limit cycle oscillator (CLO) coupled with a frequency-locked loop. Due to the nonlinear structure of the CLO, the proposed frequency adaptive CLO technique is robust against various perturbations faced in the practical settings, e.g., the discontinuous jump of phase, frequency, and amplitude. The global stability analysis of the CLO and local stability analysis of the frequency adaptive CLO are performed. Experimental results demonstrate the effectiveness of the proposed technique over a very recent technique proposed in the literature.
KW - Frequency estimation
KW - frequency-locked loop
KW - phase estimation
UR - http://www.scopus.com/inward/record.url?scp=85054524996&partnerID=8YFLogxK
U2 - 10.1109/TIE.2018.2873527
DO - 10.1109/TIE.2018.2873527
M3 - Letter
AN - SCOPUS:85054524996
VL - 66
SP - 8856
EP - 8859
JO - IEEE Transactions on Industrial Electronics
JF - IEEE Transactions on Industrial Electronics
SN - 0278-0046
IS - 11
M1 - 8485651
ER -