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Fast grid synchronization technique based on a multiple cascaded general integrator scheme for distributed generation inverters
(2012)
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This paper proposes a new structure for grid
synchronization based on generalized integrators (GI) that lead
to fast detection of positive and negative components of the grid
voltage. The GI are used as a band pass ...
Coordinated reactive power control for static synchronous compensators under unbalanced voltage sags
(2012)
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Unbalanced voltage sags strongly deteriorate the
performance of power converters and electrical machines
connected to the distribution network. In particular, a reduction
of the power quality is noticed in these equipments, ...
Control strategies based on effective power factor for distributed generation power plants during unbalanced grid voltage
(2013)
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Unbalanced voltages in three-phase power systems is a common perturbation propagated along the grid. Distributed Generation plants have gained widespread attention due to their capability to improve power quality in a ...
A new LPF-based grid frequency estimation for the SOGI filter with improved harmonic rejection
(2018)
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This paper proposes a new method for the estimation of the grid voltage frequency using a low-pass filter (LPF) approach. The estimated frequency is used to tune a second order generalized integrator (SOGI) filter commonly ...
Active damping control for a three phase grid-connected inverter using sliding mode control
(2013)
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This paper proposes a ne
w active damping method
based on virtual resistors for three-phase grid connected voltage
source inverters (VSI) with LCL filter. The use of this filters is a
standard solution to provide the ...
Power calculation algorithm for single-phase droop-operated inverters considering nonlinear loads and unsing n-order SOGI filtering
(2018)
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The average active and reactive powers, P and Q, are crucial parameters that have to be calculated when sharing common loads between parallelized droop-operated single-phase inverters. However, the droop method algorithm ...
Proposal of novel single-phase power quality indicators considering subsynchronous frequency perturbations in voltage and current under non-sinusoidal conditions
(2019)
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This work pretends to reconsider power quality (PQ), in AC single-phase low voltage systems, considering perturbation sources with frequency components below the fundamental frequency in voltage and current signals. These ...