TY - JOUR
T1 - Steady-State Linear Kalman Filter-based PLLs for Power Applications
T2 - A Second Look
AU - Golestan, Saeed
AU - Guerrero, Josep M.
AU - Quintero, Juan Carlos Vasquez
PY - 2018/12/1
Y1 - 2018/12/1
N2 - In three-phase power and energy applications, the synchronous reference frame phase-locked loop (SRF-PLL) is a popular tool for synchronization purposes. The SRF-PLL can be easily and effectively customized for different scenarios by changing its loop filter. Recently, some supposedly different PLLs using the steady-state linear Kalman filter have been developed. The main aim of this letter is to analyze these PLLs. It is demonstrated that they are actually equivalent to some well-known SRF-PLL structures and, therefore, provide no advantage compared to them.
AB - In three-phase power and energy applications, the synchronous reference frame phase-locked loop (SRF-PLL) is a popular tool for synchronization purposes. The SRF-PLL can be easily and effectively customized for different scenarios by changing its loop filter. Recently, some supposedly different PLLs using the steady-state linear Kalman filter have been developed. The main aim of this letter is to analyze these PLLs. It is demonstrated that they are actually equivalent to some well-known SRF-PLL structures and, therefore, provide no advantage compared to them.
KW - Fixed-gain filter
KW - Kalman filter
KW - phase-locked loop (PLL)
KW - synchronization
KW - synchronous reference frame PLL (SRF-PLL)
KW - three-phase systems
UR - http://www.scopus.com/inward/record.url?scp=85045191837&partnerID=8YFLogxK
U2 - 10.1109/TIE.2018.2823668
DO - 10.1109/TIE.2018.2823668
M3 - Journal article
SN - 0278-0046
VL - 65
SP - 9795
EP - 9800
JO - I E E E Transactions on Industrial Electronics
JF - I E E E Transactions on Industrial Electronics
IS - 12
M1 - 8331945
ER -