Gabriel Garcera

Prof. Gabriel Garcera

Departamento de Ingenieria Electronica, Universitat Politecnica de Valencia, Edificio 7F Camino de Vera s/n , Valencia 46022, Spain
orcid

Research Focus & Metrics

Academic Career Length

28Years (1999-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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3 October 2011 in IEEE Transactions on Industrial Electronics
Verified
Journal Article
Closed access
FGFran Gonzalez-Espin
Fran Gonzalez-Espin
EFEmilio Figueres
Emilio Figueres
GGGabriel Garcera
Gabriel Garcera
The proper operation of grid-connected power electronics converters needs using a synchronization technique to estimate the phase of the grid voltage. The performance of this synchronization technique is related to the quality of the consumed or delivered electric power. The synchronous-reference-frame phase-locked loop (SRF-PLL) has been widely used due to its ease of operation and robust behavior. However, the estimated phase can have a considerable amount of unwanted ripple if the grid voltage disturbances are not properly rejected. The aim of this paper is to propose an adaptive SRF-PLL which strongly rejects these disturbances even if the fundamental frequency of the grid voltage varies. This is accomplished by using several adaptive infinite-impulse-response notch filters, implemented by means of an inherently stable Schur-lattice structure. This structure is perfectly suited to be programmed in fixed-point DSPs (i.e., it has high mapping precision, low roundoff accumulation, and suppression of quantization limit cycle oscillations). The proposed adaptive SRF-PLL has been tested by means of the TI TMS320F2812 DSP. The obtained experimental results show that the proposed synchronization method highly rejects the undesired harmonics even if the fundamental harmonic frequency of a highly polluted grid voltage abruptly varies.

25 November 2008 in IEEE Transactions on Industrial Electronics
Verified
Journal Article
Closed access
EFEmilio Figueres
Emilio Figueres
GGGabriel Garcera
Gabriel Garcera
JSJesús Sandia
Jesús Sandia
FGFrancisco Gonzalez-Espin
Francisco Gonzalez-Espin
JRJesús Calvo Rubio
Jesús Calvo Rubio
An accurate small-signal model of three-phase photovoltaic (PV) inverters with a high-order grid filter is derived in this paper. The proposed model takes into account the influence of both the inverter operating point and the PV panel characteristics on the inverter dynamic response. A sensitivity study of the control loops to variations of the DC voltage, PV panel transconductance, supplied power, and grid inductance is performed using the proposed small-signal model. Analytical and experimental results carried out on a 100-kW PV inverter are presented.

1 March 2015 in Renewable and Sustainable Energy Reviews
Verified
Journal Article
Closed access
IPIván Patrao
Iván Patrao
EFEmilio Figueres
Emilio Figueres
GGGabriel Garcera
Gabriel Garcera
RGRaúl González-Medina
Raúl González-Medina

28 October 2010 in IEEE Transactions on Industrial Electronics
Verified
Journal Article
Closed access
JEJose Miguel Espi
Jose Miguel Espi
JCJaime Castello
Jaime Castello
RGRafael Garcia-Gil
Rafael Garcia-Gil
GGGabriel Garcera
Gabriel Garcera
EFEmilio Figueres
Emilio Figueres
This paper presents an adaptive robust predictive current control (RPCC) for grid-connected three-phase inverters that exhibit zero steady-state current error. The error correction is achieved by means of an adaptive strategy that works in parallel with the deadbeat algorithm, therefore preserving the typical fast response of the predictive law. The resulting control adapts to any particular L or LCL filter by estimation of the resistive part of the filter. As a variety of the RPCC class of control, it offers the best tradeoff between robustness and speed.

1 September 2011 in Renewable and Sustainable Energy Reviews
Verified
Journal Article
Closed access
IPIván Patrao
Iván Patrao
EFEmilio Figueres
Emilio Figueres
FGFran González-Espín
Fran González-Espín
GGGabriel Garcera
Gabriel Garcera

1 August 2010 in Renewable and Sustainable Energy Reviews
Verified
Journal Article
Closed access
DVD. Velasco
D. Velasco
CTC.L. Trujillo
C.L. Trujillo
GGGabriel Garcera
Gabriel Garcera
EFE. Figueres
E. Figueres