Jorge Garcia | University of Oviedo / Universidad de Oviedo (original) (raw)

Papers by Jorge Garcia

2013 International Conference on New Concepts in Smart Cities: Fostering Public and Private Alliances (SmartMILE), 2013

Power regulation of all converter units in a microgrid should not be only determined by load dema... more Power regulation of all converter units in a microgrid should not be only determined by load demand, but also by the available power of each unit, i.e. a converter fed by a battery. Energy management control is essential in order to handle the variety of prime movers which may include different types of renewable energy sources (RES) and energy storage systems (ESS). Specifically, the recharging process of secondary battery, the most prominent ESS, should be done in a specific manner to preserve its lifetime , microgrid line voltage must be kept within the bounds and the energy offered by RES should be utilized as efficiently as possible. This paper proposes a coordinated control strategy based on power-line signaling (PLS), instead of common communications, for a single-phase minigrid in which each unit can operate in different operation modes taking into account the resource limitation. The whole system is explained ahead and finally, simulation results obtained in Simulink are presented to validate the proposed control strategy. On the other hand, the proposed loads are several electromagnetic ballast driving high pressure sodium (HPS) lamps. Although this kind of ballast are not installed nowadays, this paper is proposed for a recent installation where is not worth to change these devices due to lack of amortization.

2007 IEEE Industry Applications Annual Meeting, 2007

2007 IEEE International Symposium on Industrial Electronics, 2007

This paper describes a complete design and implementation of a low cost digital controller for a ... more This paper describes a complete design and implementation of a low cost digital controller for a high power LED driver. The main advantages of high efficiency LEDs are their good luminosity, efficiency and long life. Due to these improved behaviour, the number of LED-based applications is increasing. Nowadays, the cost of digital processors is continuously decreasing, and the trend is

2013 International Conference on New Concepts in Smart Cities: Fostering Public and Private Alliances (SmartMILE), 2013

IEEE Transactions on Power Electronics, 2009

IEEE Transactions on Power Electronics, 2007

Page 1. IEEE TRANSACTIONS ON POWER ELECTRONICS, VOL. 22, NO. 3, MAY 2007 889 Series Igniters Effe... more Page 1. IEEE TRANSACTIONS ON POWER ELECTRONICS, VOL. 22, NO. 3, MAY 2007 889 Series Igniters Effects in Metal Halide Lamps Operation With High Frequency Ballasts: Study and Minimization Jorge Garcia Garcia ...

IEEE Transactions on Plasma Science, 2007

Abstract—In this paper, a study about acoustic resonance (AR) in low-wattage metal halide lamps i... more Abstract—In this paper, a study about acoustic resonance (AR) in low-wattage metal halide lamps is presented. The lamps are sup-plied with a typical low frequency square waveform on which a high frequency sinusoidal ripple is superposed. The goal is to em-ulate the same ...

IEEE Transactions on Industry Applications, 2013

This paper deals with the thermal characteristics of the I-V curve of GaN-based white LEDs, focus... more This paper deals with the thermal characteristics of the I-V curve of GaN-based white LEDs, focused on the variations of the dynamic resistance. The final goal of this study is to improve the static and dynamic operation of the LED driver within a wide range of temperature. Four LEDs from different manufacturers were chosen for this study. The first part

IEEE Transactions on Industrial Electronics, 2008

In this paper, a new control method for electronic ballasts based on the use of a variable induct... more In this paper, a new control method for electronic ballasts based on the use of a variable inductor is presented. The main goal is to perform the complete control of the electronic ballast by maintaining the switching frequency constant and without using other parameters of the power converter, such as input voltage or duty cycle. The magnetic regulator is controlled

Electronics Letters, 2014

ABSTRACT A novel high pressure sodium (HPS) lamp model is proposed. The proposed model is particu... more ABSTRACT A novel high pressure sodium (HPS) lamp model is proposed. The proposed model is particularised for 150 W HPS lamps, providing a powerful tool for simulating the behaviour of such lamps operating with low-frequency electromagnetic ballasts or high-frequency switching electronic ballasts. Simulations and experimental results are provided for verification of the model. The model can be easily extended to other rated wattages and kinds of discharge lamps.

IEEE Transactions on Power Electronics, 2005

Reliable point-to-point communication is usually achieved in overlay networks by applying TCP on ... more Reliable point-to-point communication is usually achieved in overlay networks by applying TCP on the end nodes of a connection. This paper presents a hop-by-hop reliability approach that considerably reduces the latency and jitter of reliable connections. Our approach is feasible and beneficial in overlay networks that do not have the scalability and interoperability requirements of the global Internet. The effects of the hop-by-hop reliability approach are quantified in simulation as well as in practice using a newly developed overlay network system that is fair with the external traffic on the Internet. The experimental results show that the overhead associated with overlay network processing at the application level does not play an important factor compared with the considerable gain of the approach. 2 Hop-by-hop reliable communication in overlay networks An overlay network constructs a user level graph on top of an existing networking infrastructure such as the Internet, using only a subset of the available network links and nodes. An overlay link is a virtual edge in this graph and

2013 International Conference on New Concepts in Smart Cities: Fostering Public and Private Alliances (SmartMILE), 2013

Power regulation of all converter units in a microgrid should not be only determined by load dema... more Power regulation of all converter units in a microgrid should not be only determined by load demand, but also by the available power of each unit, i.e. a converter fed by a battery. Energy management control is essential in order to handle the variety of prime movers which may include different types of renewable energy sources (RES) and energy storage systems (ESS). Specifically, the recharging process of secondary battery, the most prominent ESS, should be done in a specific manner to preserve its lifetime , microgrid line voltage must be kept within the bounds and the energy offered by RES should be utilized as efficiently as possible. This paper proposes a coordinated control strategy based on power-line signaling (PLS), instead of common communications, for a single-phase minigrid in which each unit can operate in different operation modes taking into account the resource limitation. The whole system is explained ahead and finally, simulation results obtained in Simulink are presented to validate the proposed control strategy. On the other hand, the proposed loads are several electromagnetic ballast driving high pressure sodium (HPS) lamps. Although this kind of ballast are not installed nowadays, this paper is proposed for a recent installation where is not worth to change these devices due to lack of amortization.

2007 IEEE Industry Applications Annual Meeting, 2007

2007 IEEE International Symposium on Industrial Electronics, 2007

This paper describes a complete design and implementation of a low cost digital controller for a ... more This paper describes a complete design and implementation of a low cost digital controller for a high power LED driver. The main advantages of high efficiency LEDs are their good luminosity, efficiency and long life. Due to these improved behaviour, the number of LED-based applications is increasing. Nowadays, the cost of digital processors is continuously decreasing, and the trend is

2013 International Conference on New Concepts in Smart Cities: Fostering Public and Private Alliances (SmartMILE), 2013

IEEE Transactions on Power Electronics, 2009

IEEE Transactions on Power Electronics, 2007

Page 1. IEEE TRANSACTIONS ON POWER ELECTRONICS, VOL. 22, NO. 3, MAY 2007 889 Series Igniters Effe... more Page 1. IEEE TRANSACTIONS ON POWER ELECTRONICS, VOL. 22, NO. 3, MAY 2007 889 Series Igniters Effects in Metal Halide Lamps Operation With High Frequency Ballasts: Study and Minimization Jorge Garcia Garcia ...

IEEE Transactions on Plasma Science, 2007

Abstract—In this paper, a study about acoustic resonance (AR) in low-wattage metal halide lamps i... more Abstract—In this paper, a study about acoustic resonance (AR) in low-wattage metal halide lamps is presented. The lamps are sup-plied with a typical low frequency square waveform on which a high frequency sinusoidal ripple is superposed. The goal is to em-ulate the same ...

IEEE Transactions on Industry Applications, 2013

This paper deals with the thermal characteristics of the I-V curve of GaN-based white LEDs, focus... more This paper deals with the thermal characteristics of the I-V curve of GaN-based white LEDs, focused on the variations of the dynamic resistance. The final goal of this study is to improve the static and dynamic operation of the LED driver within a wide range of temperature. Four LEDs from different manufacturers were chosen for this study. The first part

IEEE Transactions on Industrial Electronics, 2008

In this paper, a new control method for electronic ballasts based on the use of a variable induct... more In this paper, a new control method for electronic ballasts based on the use of a variable inductor is presented. The main goal is to perform the complete control of the electronic ballast by maintaining the switching frequency constant and without using other parameters of the power converter, such as input voltage or duty cycle. The magnetic regulator is controlled

Electronics Letters, 2014

ABSTRACT A novel high pressure sodium (HPS) lamp model is proposed. The proposed model is particu... more ABSTRACT A novel high pressure sodium (HPS) lamp model is proposed. The proposed model is particularised for 150 W HPS lamps, providing a powerful tool for simulating the behaviour of such lamps operating with low-frequency electromagnetic ballasts or high-frequency switching electronic ballasts. Simulations and experimental results are provided for verification of the model. The model can be easily extended to other rated wattages and kinds of discharge lamps.

IEEE Transactions on Power Electronics, 2005

Reliable point-to-point communication is usually achieved in overlay networks by applying TCP on ... more Reliable point-to-point communication is usually achieved in overlay networks by applying TCP on the end nodes of a connection. This paper presents a hop-by-hop reliability approach that considerably reduces the latency and jitter of reliable connections. Our approach is feasible and beneficial in overlay networks that do not have the scalability and interoperability requirements of the global Internet. The effects of the hop-by-hop reliability approach are quantified in simulation as well as in practice using a newly developed overlay network system that is fair with the external traffic on the Internet. The experimental results show that the overhead associated with overlay network processing at the application level does not play an important factor compared with the considerable gain of the approach. 2 Hop-by-hop reliable communication in overlay networks An overlay network constructs a user level graph on top of an existing networking infrastructure such as the Internet, using only a subset of the available network links and nodes. An overlay link is a virtual edge in this graph and