Papers by Francisco Guerrero Huerta
2007 IEEE International Symposium on Intelligent Signal Processing, 2007
Page 1. Three-phase power system parametric identification based on complex-space recursive least... more Page 1. Three-phase power system parametric identification based on complex-space recursive least squares Santiago Cobreces, Francisco Huerta, Daniel Pizarro, Francisco J. Rodrguez, Emilio J. Bueno Department of Electronics. University of Alcala. Spain. ...
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2010 IEEE International Symposium on Industrial Electronics, 2010
Page 1. Robust Loop-shaping H∞ control of LCL-connected grid converters Santiago Cobreces, Emilio... more Page 1. Robust Loop-shaping H∞ control of LCL-connected grid converters Santiago Cobreces, Emilio J. Bueno, Francisco J. Rodriguez, Daniel Pizarro, Francisco Huerta GEISER Research Group, Politechnic School,University ...
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2007 European Conference on Power Electronics and Applications, 2007
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2007 IEEE International Symposium on Industrial Electronics, 2007
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IECON 2012 - 38th Annual Conference on IEEE Industrial Electronics Society, 2012
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2007 IEEE International Symposium on Intelligent Signal Processing, 2007
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IECON 2013 - 39th Annual Conference of the IEEE Industrial Electronics Society, 2013
ABSTRACT This paper presents an optimal LQR control for a static-series compensator (SSC) and pro... more ABSTRACT This paper presents an optimal LQR control for a static-series compensator (SSC) and propounds a design criterion for the choice of the LQR weights in order to mitigate grid-voltage dips. The authors present a SSC state-space model that considers the modelling of grid, transformer and R-L load. The proposed control works in the Stationary-Reference Frames (SRF) and implements AFC resonant controllers, allowing the direct control of unbalanced dips in a three wire grid-load connection.
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Mathematics and Computers in Simulation, 2013
ABSTRACT In the future power system based on active distribution grid, allowing some portion to b... more ABSTRACT In the future power system based on active distribution grid, allowing some portion to be disconnected, the concept of universal wind turbine systems may arise. This concept covers both grid-connected and island operations. This may happen if the voltage goes outside the range recommended by the standards. In such conditions, an island is constituted where the universal wind turbine is capable to manage the local voltage and frequency assuring the continuous supply to local loads. In this paper, a control loop based on droop and voltage controllers disposed in cascade is employed in both operation modes. Droop control offers power load sharing between the distributed generation sources connected in parallel in the island. The voltage controller is designed to provide smooth transitions between modes and power quality. A synchronization system is also introduced for assuring safe reconnections with the main utility. Simulation and experimental results are presented to verify the performance of the complete system.
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Energies, 2013
ABSTRACT Suitability of energy systems based on Superconducting Magnetic Energy Storage (SMES) ha... more ABSTRACT Suitability of energy systems based on Superconducting Magnetic Energy Storage (SMES) has been widely tested in the field of wind energy, being able to supply power in cases such as low wind speeds or voltage dips, and to store energy when there are surpluses. This article analyzes and compares the performance of three SMES-based systems that differ in the topology of power converter: a two-level Voltage Source Converter (VSC), a three-level VSC and a two-level Current Source Converter (CSC). Their performance has been improved by means of an appropriate modulation strategy. To obtain a high reliability and accuracy, a co-simulation between MATLAB/Simulink® (running the control system) and PSIM® (running the power system) has been executed.
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Papers by Francisco Guerrero Huerta