Alvaro Luna

TL;DR: In this paper, a detailed analysis of the main operation modes and control structures for power converters belonging to micro-grids is carried out, focusing mainly on grid-forming, grid-feeding, and grid-supporting configurations.

TL;DR: A new multiresonant frequency-adaptive synchronization method for grid-connected power converters that allows estimating not only the positive- and negative-sequence components of the power signal at the fundamental frequency but also other sequence components at other harmonic frequencies is presented.

TL;DR: A new grid synchronization method for three-phase three-wire networks, namely dual second-order generalized integrator (SOGI) frequency-locked loop, based on two adaptive filters, is presented, able to perform an excellent estimation of the instantaneous symmetrical components of the grid voltage under unbalanced and distorted grid conditions.

TL;DR: A novel control for voltage-source inverters with the capability to flexibly operate in grid-connected and islanded modes based on the droop method, which uses some estimated grid parameters such as the voltage and frequency and the magnitude and angle of the grid impedance.

TL;DR: In this paper, the dual second-order generalized integrator (SOGI) concept is exploited to generate in-quadrature signals used on the alphabet and the frequency-adaptive characteristic is achieved by a simple control loop, without using either phaseangles or trigonometric functions.