A Nonlinear Adaptive Filter for Online Signal Analysis in Power Systems: Applications

Three-phase phase-locked loop synchronization algorithms for grid-connected renewable energy systems: A review

“…The three-phase enhanced PLL (3EPLL) proposed in [70] is a three-phase version of the EPLL [71][72][73][74] and is developed by utilizing four individual EPLL blocks. The EPLL is actually an adaptive band pass filter that is capable of adjusting the transfer function according to the error signal, as depicted in Fig.…”

Grid synchronization for advanced power processing and FACTS in wind power systems

“…7, is slightly different from the original one [6], however the presented modifications permit a better computation, something reflected in [18] where Karimi-Ghartemani et al are using this method to describe the state space variables. It is worth to notice that an EPLL results in a nonlinear system [18], as can be demonstrated in (12)- (14), for this reason it is discretized in a different way than the previous DSOGI PLL.…”

“…A good PLL can provide further advanced functionalities to the control system, as it is the case of the islanding detection mode for wind farms [5] or, as it is mentioned in [6], for getting the current harmonic reference for active filtering applications. In a nutshell, the possibilities that an accurate grid synchronization method offers are summarized in Fig.…”

Técnicas de filtrado adaptativo aplicadas al rechazo selectivo de perturbaciones en inversores fotovoltaicos trifásicos

“…A pesar de que existen distintas estructuras basadas en PLL [92], [112]- [114], la estructura más extendida en electrónica de potencia responde a la estrategia basada en la proyección del sistema trifásico de tensiones en un sistema de referencia síncrono con la frecuencia de red [108], [115]- [119]. Este PLL, denominado también SRF-PLL, es el empleado en la presente tesis doctoral, por lo que su funcionamiento es descrito de manera detallada en el capítulo 4.…”