Jose Matas

Publication Date: 2000

Publication Name: 8th International Conference on Power Electronics and Variable Speed Drives

Research Interests:
Sliding mode control

ABSTRACT

Publication Date: 2005

Publication Name: 2005 European Conference on Power Electronics and Applications

Research Interests:
Low Frequency, High Voltage, Steady state, Network Topology, and Transient Response

This paper presents a new inverter topology based on a third-order quantum resonant converter. The power stage consists of an input and output filter, a three-elements resonant network, and only three bi-directional switches which exhibit... more

This paper presents a new inverter topology based on a third-order quantum resonant converter. The power stage consists of an input and output filter, a three-elements resonant network, and only three bi-directional switches which exhibit zero-current switching conditions. To control the switches, a closed-loop nonlinear control scheme is proposed in order to both achieve bi-directional power flow and make the

Publication Date: 1999

Publication Name: ISIE '99. Proceedings of the IEEE International Symposium on Industrial Electronics (Cat. No.99TH8465)

Research Interests:
Nonlinear Control, High Frequency, Sliding mode control, Steady state, Time Dependent, and 2 moreTransient Response and Power flow

Publication Date: 2002

Publication Name: IEEE 2002 28th Annual Conference of the Industrial Electronics Society. IECON 02

Research Interests:
Controller Design, Dynamic Response, Uninterruptible power supply, Transient Response, and Feed-Forward

Publication Date: 2004

Publication Name: Nineteenth Annual IEEE Applied Power Electronics Conference and Exposition, 2004. APEC '04.

Research Interests:
Digital Signal Processing, Control Systems, Power Generation, Phase Synchronization, APEC, and 5 moreSensorimotor synchronisation, High performance, Voltage, Uninterruptible power supply, and Transient Response

In this paper, a charge control applied to parallel-connected DC-DC converters is proposed. Charge control is a kind of current-mode control, in which the integral of the inductor current in the on state of each switching cycle reaches a... more

In this paper, a charge control applied to parallel-connected DC-DC converters is proposed. Charge control is a kind of current-mode control, in which the integral of the inductor current in the on state of each switching cycle reaches a reference value. This value is the feedback output signal of a pole placement block, which fixes the poles of the output-voltage.

Publication Date: 2002

Publication Name: Proceedings of the IEEE International Symposium on Industrial Electronics ISIE-02

Research Interests:
Theoretical Analysis, Voltage regulator, Pole placement, Dc-Dc Boost Converter, Power Distribution, and 2 moreReference Value and Current Mode

A novel design methodology of sliding mode control schemes for quantum resonant converters is presented. The method is based on the imposition of a specified output-voltage dynamic response, and it provides a set of sliding surfaces... more

A novel design methodology of sliding mode control schemes for quantum resonant converters is presented. The method is based on the imposition of a specified output-voltage dynamic response, and it provides a set of sliding surfaces guaranteeing high robustness and large-signal stability. Among these schemes, the final configuration is selected taking into account a simple practical implementation. Simulation and experimental

Publication Date: 2000

Research Interests:
Sliding mode control, Design Methodology, and Dynamic Response

Page 1. Abstract The single magnetic push-pull forward converter is a suitable topology for power delivery, supplying low voltages and fast transient currents for high performance microprocessors. This paper covers a lack ...

Publication Date: 2005

Research Interests:
Gastroenterology, High performance, Nonlinear Model, and Low voltage

Abstract The aim of this paper is the application of feedback linearization techniques to a single-phase active power filter via a sliding mode control approach. The sliding control surfaces are designed by imposing a desired dynamic... more

Abstract The aim of this paper is the application of feedback linearization techniques to a single-phase active power filter via a sliding mode control approach. The sliding control surfaces are designed by imposing a desired dynamic behavior on the system, which ...

Publication Date: 2002

Publication Name: IECON Proceedings (Industrial Electronics Conference)

Research Interests:
Sliding mode control, Dynamic Response, Active Filter, Feedback Linearization, Active Power Filter, and Sliding Mode Controller

This paper presents a discrete nonlinear control scheme for PWM inverters. Based on the dynamic model of the PWM inverter a control algorithm is deduced by imposing a desired linear dynamics in the output voltage. The proposed scheme has... more

This paper presents a discrete nonlinear control scheme for PWM inverters. Based on the dynamic model of the PWM inverter a control algorithm is deduced by imposing a desired linear dynamics in the output voltage. The proposed scheme has shown its robustness on low voltage distortion, excellent voltage regulation and it is insensitive to load and input voltage variations. A simple and fast digital algorithm, that could be implemented on a low-cost DSP, carries out the discrete control.

Publication Date: 2002

Publication Name: IECON Proceedings (Industrial Electronics Conference)

Research Interests:
Nonlinear Control, Voltage regulator, Dynamic Model of WSN, Control Algorithm, and Low voltage

Publication Date: 2002

Publication Name: IECON Proceedings (Industrial Electronics Conference)

Research Interests:
Sliding mode control, Dynamic Response, Sliding Mode, Discrete Time Systems, and Sliding Mode Controller

Publication Date: 2003

Publication Name: IECON Proceedings (Industrial Electronics Conference)

Research Interests:
Parallel Systems and Non Linear Control

Absiract - In this paper, a novel controller for parallel-connected online-UPS inverters without control wire interconnections is presented. The wireless control technique is based on the well-known droop method, which consists in... more

Absiract - In this paper, a novel controller for parallel-connected online-UPS inverters without control wire interconnections is presented. The wireless control technique is based on the well-known droop method, which consists in introducing P-oand QV schemes into the ...

Publication Date: 2003

Publication Name: IECON Proceedings (Industrial Electronics Conference)

Research Interests:
Phase Synchronization, Voltage regulator, Transient Response, and Load sharing

The main difficulty to control an active filter is linked to the nature of the load, and especially when the load is capacitive. In this paper, to solve this problem, a sliding mode control is conceived by imposing a desired dynamics in... more

The main difficulty to control an active filter is linked to the nature of the load, and especially when the load is capacitive. In this paper, to solve this problem, a sliding mode control is conceived by imposing a desired dynamics in the mains current. A passive filter in series with the load is introduced to reduce the instabilities due

Publication Date: 2003

Publication Name: IECON Proceedings (Industrial Electronics Conference)

Research Interests:
Sliding mode control, Harmonic distortion, Active Filter, and Active Power Filter

... Aachen. G emy , 2004 Output Impedance Performance for Parallel Operation of UPS Inverters Using Wireless and Average Current-Sharing Controllers J. M. Guerrero', L. Garcia de VicuRa", J. Miret", J. Mata?, and J.... more

... Aachen. G emy , 2004 Output Impedance Performance for Parallel Operation of UPS Inverters Using Wireless and Average Current-Sharing Controllers J. M. Guerrero', L. Garcia de VicuRa", J. Miret", J. Mata?, and J. Cruz" * Dept. ...

Publication Date: 2004

Publication Name: PESC Record - IEEE Annual Power Electronics Specialists Conference

Research Interests:
Nonlinear Control and PESC

Abstract The single magnetic push-pull forward converter is a suitable topology to supply high-input voltage high-performance microprocessor. This paper presents an averaged large-signal model that describes accurately the low-frequency... more

Abstract The single magnetic push-pull forward converter is a suitable topology to supply high-input voltage high-performance microprocessor. This paper presents an averaged large-signal model that describes accurately the low-frequency dynamics of the important ...

Publication Date: 2004

Publication Name: IEEE International Symposium on Industrial Electronics

Abstract This paper proposes a dynamic study of the dc/dc series-parallel resonant converter (SPRC) operating with self-sustained phase shift modulation technique (SSPSM). The study includes the synthesis of a suitable averaged... more

Abstract This paper proposes a dynamic study of the dc/dc series-parallel resonant converter (SPRC) operating with self-sustained phase shift modulation technique (SSPSM). The study includes the synthesis of a suitable averaged large-signal dynamic model and the design ...

Publication Date: 2007

Publication Name: 2007 IEEE International Symposium on Industrial Electronics

Research Interests:
Electronics, Adaptive Control, Robust control, Dynamic Analysis, Resonance, and 6 moreSliding mode control, Dynamic Model of WSN, Input Output, Phase Modulation, Transient Response, and Phase Shift

Abstract This paper proposes a dynamic study of the DC/DC series resonant converter operating with asymmetrical clamped-mode modulation technique. The study includes the synthesis of a suitable averaged large-signal dynamic model and... more

Abstract This paper proposes a dynamic study of the DC/DC series resonant converter operating with asymmetrical clamped-mode modulation technique. The study includes the synthesis of a suitable averaged large-signal dynamic model and the design of a nonlinear feedback ...

Publication Date: 2006

Publication Name: IECON 2006 - 32nd Annual Conference on IEEE Industrial Electronics

Research Interests:
Dynamic Analysis, Control Design, Dynamic Model of WSN, Input Output, and Transient Response

A Voltage Sourced Inverter (VSI) intended to inject active power to the grid is presented. The VSI is designed with an LCL output filter. This objective is done by means of a sliding mode control, which is a widely used technique to... more

A Voltage Sourced Inverter (VSI) intended to inject active power to the grid is presented. The VSI is designed with an LCL output filter. This objective is done by means of a sliding mode control, which is a widely used technique to control systems where a fast dynamic response, robustness and accuracy are required. However, variable switching frequency appears when

Publication Date: 2012

Publication Name: 2012 IEEE International Symposium on Industrial Electronics

Research Interests:
Control system, Sliding mode control, Time Frequency Analysis, Filter Design, Dynamic Response, and Voltage Source Inverter

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, which is... more

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, which is caused by a ripple in the output power and an increase of the current harmonic distortion. Several solutions based on reactive power compensation have been introduced to

Publication Date: 2012

Publication Name: 2012 IEEE International Symposium on Industrial Electronics

Research Interests:
Power Quality, Reactive Power, Voltage sag, Electrical Machine, Power Converter, and 5 moreHarmonic distortion, Reactive Power Compensation, Control Algorithm, Reactive Power Control, and Voltage Control

ABSTRACT 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 distributed... more

ABSTRACT 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 distributed manner, including voltage unbalance mitigation. A conventional control strategy to command power plants during balanced grid voltages, is the use of power factor to inject/absorb reactive power depending on grid conditions. Advanced control strategies during unbalanced grid voltages can be selected prioritizing positive or negative sequence active and reactive power. This selection determines the voltage support service and therefore can improve the voltage profile, i.e. phase-voltages can be properly supported and voltage imbalance simultaneously corrected. Based on the definition of effective power factor in IEEE 1459 Standard, the reactive power needed for any control strategy is obtained and the resulting effects are described.

Publication Date: 2013

Publication Name: IECON 2013 - 39th Annual Conference of the IEEE Industrial Electronics Society

Publication Date: 2008

Publication Name: 2008 IEEE International Symposium on Industrial Electronics

Research Interests:
Wind turbine, Fixed Point Theory, Feedback, Wind Turbines, Digital Signal Processor, and Feedback Linearization

ABSTRACT This paper proposes a new 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 proper... more

ABSTRACT This paper proposes a new 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 proper attenuation to the sideband voltage harmonics of the modulation signal. However these grid filters can introduce an unstable dynamics if a passive or active damping is not properly introduced. The passive damping solution causes a decrease of the overall efficiency due to the associated losses and reduces the filter effectiveness but in contrast no more extra sensors are needed. Active damping methods are more efficient because they don&#39;t introduce losses but suffers from control and system complexity because in some cases a high number of sensors are needed. The proposed strategy employs a nonlinear sliding mode control (SMC) scheme in natural frame in combination with a Kalman filter to emulate a resistor in the LCL filter which damps the system actively without the use of extra sensors. Two current controllers are designed in order to control the active and reactive power independently and a voltage controller is designed to control the neutral point which is fixed with a third harmonic voltage in order to increase the control dynamic range.

Publication Date: 2013

Publication Name: IECON 2013 - 39th Annual Conference of the IEEE Industrial Electronics Society

Publication Date: 2008

Publication Name: IET Power Electronics

Research Interests:
Voltage regulator and Electrical And Electronic Engineering

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ABSTRACT

Publication Date: 2005

Publication Name: IEE Proceedings - Electric Power Applications

Research Interests:
Control Theory, Power Electronics, Robust control, Low Frequency, Control system, and 5 morePower Factor, Controller, Electrical And Electronic Engineering, Resonance Frequency, and Resonant Frequency

ABSTRACT

Publication Date: 2005

Publication Name: IEE Proceedings - Electric Power Applications

Research Interests:
Buck Converter and Electrical And Electronic Engineering

ABSTRACT Voltage sags are one of the main problems in transmission and distribution grids with high penetration of distributed generation. This paper proposes a voltage support control scheme for grid-connected power sources under voltage... more

ABSTRACT Voltage sags are one of the main problems in transmission and distribution grids with high penetration of distributed generation. This paper proposes a voltage support control scheme for grid-connected power sources under voltage sags. The control is based on the injection of reactive current with a variable ratio between positive and negative sequences. The controller determines, also, the amount of reactive power needed to restore the dropped voltage magnitudes to new reference values confined within the continuous operation limits required in grid codes. These reference values are chosen in order to guarantee low current injection when fulfilling the voltage support objective. Selected experimental results are reported in order to validate the effectiveness of the proposed control.

Publication Date: 2000

Publication Name: IEEE Transactions on Power Electronics

Research Interests:
Electrical And Electronic Engineering

Page 1. 2930 IEEE TRANSACTIONS ON POWER ELECTRONICS, VOL. 25, NO. 12, DECEMBER 2010 Grid-Fault Control Scheme for Three-Phase Photovoltaic Inverters With Adjustable Power Quality Characteristics Miguel ...

Publication Date: 2000

Publication Name: IEEE Transactions on Power Electronics

Research Interests:
Power Quality, Power System, Voltage sag, Control Strategy, Digital Signal Processor, and 4 moreHarmonic distortion, Experimental Validation, Electrical And Electronic Engineering, and Control Algorithm

ABSTRACT Nowadays, the majority of the photovoltaic (PV) power sources are connected to the public grid. One of the main connection problems occurs when voltage sags appear in the grid due to short circuits, lightning, etc. International... more

ABSTRACT Nowadays, the majority of the photovoltaic (PV) power sources are connected to the public grid. One of the main connection problems occurs when voltage sags appear in the grid due to short circuits, lightning, etc. International standards regulate the grid connection of PV systems, forcing the source to remain connected during short-time grid-voltage faults. As a consequence, during the voltage sag, the source should operate with increasing converter currents to maintain the injection of the generated power. This abnormal operation may result in nondesired system disconnections due to overcurrents. This paper proposes a controller for a PV three-phase inverter that ensures minimum peak values in the grid-injected currents, as compared with conventional controllers. From the system analysis, a design method is presented in order to set the parameters of the control scheme. Selected experimental results are reported in order to validate the effectiveness of the proposed control.

Publication Date: 2000

Publication Name: IEEE Transactions on Power Electronics

Research Interests:
Electrical And Electronic Engineering

Publication Date: 2000

Publication Name: IEEE Transactions on Power Electronics

Research Interests:
Electrical And Electronic Engineering

Publication Date: 2000

Publication Name: IEEE Transactions on Industrial Electronics

Research Interests:
Engineering, Control Systems Engineering, Control Systems, Performance Analysis, Industrial, and 7 moreFeedback, Resonant Converters, Dynamic Model of WSN, Input Output, Phase Modulation, Transient Response, and Phase Shift

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Publication Date: 2000

Publication Name: IEEE Transactions on Industrial Electronics

Research Interests:
Engineering, Adaptive Control, Control Design, Design Methodology, Power Supply, and 7 moreVoltage regulator, Cost Control, Buck Converter, Transient Response, Voltage Regulators, Low voltage, and Voltage Control

ABSTRACT This paper describes a control design methodology based on output impedance analysis for multiphase synchronous buck converters. This design leads to an optimal output voltage transient response. Two design alternatives are... more

ABSTRACT This paper describes a control design methodology based on output impedance analysis for multiphase synchronous buck converters. This design leads to an optimal output voltage transient response. Two design alternatives are proposed. The first alternative uses an equivalent single-phase converter to design the control parameters. This approximation is valid as long as the deviations between the phases of the converter are within the usual tolerance limits. The second one achieves exact constant resistive output impedance regardless of the differences that exist between the phases. Simulation and experimental results are reported in order to validate the two design approaches.

Publication Date: 2000

Publication Name: IEEE Transactions on Industrial Electronics

Research Interests:
Engineering, Optimal Control, Transient Response, and Voltage Regulators

Publication Date: 2000

Publication Name: IEEE Transactions on Industrial Electronics

Research Interests:
Engineering and Sliding mode control

This paper presents a sliding-mode control for a single-phase AC/AC quantum resonant converter. The closed-loop system improves regulation, sensitivity to disturbances, and transient response. The design of the closed-loop system is based... more

This paper presents a sliding-mode control for a single-phase AC/AC quantum resonant converter. The closed-loop system improves regulation, sensitivity to disturbances, and transient response. The design of the closed-loop system is based on the sliding-mode control theory, and it is carried out with the help of an averaged large-signal model of the resonant converter. Simulation and experimental results are reported

Publication Date: 2000

Publication Name: IEEE Transactions on Industrial Electronics

Research Interests:
Engineering, Sliding mode control, and Transient Response

Publication Date: 2000

Publication Name: IEEE Transactions on Industrial Electronics

Research Interests:
Engineering

ABSTRACT Static synchronous compensators have been broadly employed for the provision of electrical ac network services, which include voltage regulation, network balance, and stability improvement. Several studies of such compensators... more

ABSTRACT Static synchronous compensators have been broadly employed for the provision of electrical ac network services, which include voltage regulation, network balance, and stability improvement. Several studies of such compensators have also been conducted to improve the ac network operation during unbalanced voltage sags. This paper presents a complete control scheme intended for synchronous compensators operating under these abnormal network conditions. In particular, this control scheme introduces two contributions: a novel reactive current reference generator and a new voltage support control loop. The current reference generator has as a main feature the capacity to supply the required reactive current even when the voltage drops in amplitude during the voltage sag. Thus, a safe system operation is easily guaranteed by fixing the limit required current to the maximum rated current. The voltage control loop is able to implement several control strategies by setting two voltage set points. In this paper, three voltage support control strategies are proposed, and their advantages and limitations are discussed in detail. The two theoretical contributions of this paper have been validated by experimental results. Certainly, the topic of voltage support is open for further research, and the control scheme proposed in this paper can be viewed as an interesting configuration to devise other control strategies in future works.

Publication Date: 2000

Publication Name: IEEE Transactions on Industrial Electronics

Research Interests:
Engineering and Wind energy integration and PowerSystems analysis

Publication Date: 2000

Publication Name: IEEE Transactions on Energy Conversion

Research Interests:
Transient Response, Electrical And Electronic Engineering, and Wind Power Generation

ABSTRACT The growth of the Spanish photovoltaic (PV) sector in the period 2004–2008 rendered Spain a prominent place among top worldwide countries. Yet, this growth was rather uneven across the different Spanish regions which raised the... more

ABSTRACT The growth of the Spanish photovoltaic (PV) sector in the period 2004–2008 rendered Spain a prominent place among top worldwide countries. Yet, this growth was rather uneven across the different Spanish regions which raised the interest on the drivers ultimately effecting these disparities. Especially controversial were the arguments about the influence of the administrative procedure and the landscape policy on the development of GCPVS on-floor. This study therefore discloses both two elements and evaluates their impact in a group of PV prominent Spanish regions and Catalonia, the latter used as a benchmark because of its comprehensive and stringent regulation on landscape protection, which was accused by the PV industry of thwarting the development of the GCPVS on-floor. Both quantitative and qualitative analyses were carried out. In particular two indexes were elaborated to determine the consistency of the arguments pointing to the landscape protection policy as a decisive barrier to GCPVS growth. First, when the analysis is made in relative terms, the ranking of PV prominent regions changes and many of the differences vanish. Second, rather than the preeminence of a landscape protection policy what really matters for GCPVS on-floor growth is the administrative procedure and the processing enabling its implementation.

Publication Date: 2013

Publication Name: Energy Policy

Research Interests:
Energy Policy, Multidisciplinary, and Photovoltaic

ABSTRACT In Energy Policy, 38 (7) 3297–3308, Dusonchet and Telaretti contribute a significant deal to the field of PV comparative policy analysis in the EU by addressing the impact of the PV regulatory framework on the investment... more

ABSTRACT In Energy Policy, 38 (7) 3297–3308, Dusonchet and Telaretti contribute a significant deal to the field of PV comparative policy analysis in the EU by addressing the impact of the PV regulatory framework on the investment decisions of the sector—as determined by net present value (NPV) and internal rate of return (IRR) indices—in seventeen Western EU countries. As a necessary first step, the authors bring off a concise and straightforward analysis of the different legal frameworks ruling solar PVS implementation in those countries.In the specific case of Spain we have identified some imprecision that could lead to misunderstandings about the role and impact of the PV legal framework on the massive expansion of the sector, especially during the so-called “Spanish PV Boom”.This note is intended to add on the authors&#39; primary and challenging effort to provide a systematic analysis of the Spanish PV sector by contextualizing this period of hype and, on the basis of this analysis, contribute our own understanding about how the complexity and uncertainties generated by the successive frameworks might have triggered such a frenzied response by the market.

Publication Date: 2012

Publication Name: Energy Policy

Research Interests:
Energy Policy and Multidisciplinary

ABSTRACT

Publication Date: 2002

Publication Name: Electronics Letters

Research Interests:
Electrical And Electronic Engineering and Electronics Letters

Publication Date: 2005

Publication Name: IEEE Transactions on Industrial Electronics

Research Interests:
Engineering, Control Systems Engineering, Power System, Electronics & Telecommunication Engineering, Control Systems, and 6 moreIndustrial, Reactive Power, Uninterruptible power supply, Feedback Linearization, Total Harmonic Distortion, and Load sharing

Publication Date: 2000

Publication Name: IEEE Transactions on Industrial Electronics

Research Interests:
Engineering, Power System, Industrial, Design process, Control Design, and 2 moreDigital Signal Processor and Transient Response

Publication Date: 2000

Publication Name: IEEE Transactions on Industrial Electronics

Research Interests:
Engineering, Signal Analysis, Industrial, Control Strategy, Inverter, and 2 moreUninterruptible power supply and Distributed Generators

Page 1. Parallel Operation of Uninterruptible Power Supply Systems in MicroGrids Josep M. Guerrero1, Juan C. Vásquez1, José Matas1,2, Jorge L. Sosa3,4, Luis García de Vicuña2 UNIVERSITAT POLITÈCNICA DE CATALUNYA (UPC) 1 Dept. ...

Publication Date: 2007

Publication Name: 2007 European Conference on Power Electronics and Applications

Research Interests:
Power Electronics, Converter Control, Uninterruptible power supply, Control Method, and Control Architecture

Publication Date: 2011

Publication Name: Industrial Electronics, IEEE Transactions on

Publication Date: 2009

Publication Name: Industrial Electronics, IEEE Transactions on

Publication Date: 1997

Publication Name: Fuzzy Systems, 1997., Proceedings of the Sixth IEEE International Conference on

Publication Date: 2000

Publication Name: Power Electronics and Variable Speed Drives, 2000. Eighth International Conference on (IEE Conf. Publ. No. 475)