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Power losses calculation methodology to evaluate inverter efficiency in electrical vehicles
Josep Pou;Daniel Osorno;Jordi Zaragoza;Carles Jaen;Salvador Ceballos
2011 7th International Conference-Workshop Compatibility and Power Electronics (CPE)
Year: 2011 | Conference Paper |
Cited by: Papers (38)
Nowadays, electrical vehicles (EVs) are of special interest and fuel engines are starting to be substituted by electrical motors. Besides the batteries and the motor, the power electronic devices are important parts in an EV, especially the inverter. This ac/dc power converter drives the electrical motor. Several tools may be needed to achieve an optimal design of the inverter. This paper presents...Show More
On the use of sun trackers to improve maximum power point tracking controllers applied to photovoltaic systems
Carles Jaen;Josep Pou;Gabriel Capella;Antoni Arias;Manuel Lamich
Nowadays power supply systems based on photovoltaic cells have two main drawbacks, even the primary energy is free and renewable. They are: production cost and efficiency. In order to increase their efficiency, it should be interesting that the energy transfer between cells and load was done at maximum level. In this paper the use of a sun tracker system is presented as an additional improvement a...Show More
Control to reduce leading current in a Shunt Hybrid power filter
Manuel Lamich;Josep Balcells;David Gonzalez;Xavier Gago;Carles Jaen;Jose Luis Castillo
2009 Compatibility and Power Electronics
Year: 2009 | Conference Paper |
The main drawback of Shunt Hybrid Filters is the need of leading current injection. This paper describes a strategy to reduce the leading current in a three phase four wires LC coupled parallel hybrid filter for harmonics cancellation. Simulation and experimental results are given to show the behavior of the system.Show More
Voltage-Balance Compensator for a Carrier-Based Modulation in the Neutral-Point-Clamped Converter
Jordi Zaragoza;Josep Pou;Salvador Ceballos;Eider Robles;Carles Jaen;Montse Corbalan
This paper presents an optimal voltage-balancing compensator for a specific modulation technique applied to a neutral-point-clamped converter. The technique uses two modulation signals per phase, and it is called double-signal pulsewidth modulation. It completely eliminates low-frequency oscillations in the neutral-point voltage. However, it does not provide natural voltage balancing; therefore, a...Show More
Permanent Magnet Synchronous Motor Sensorless Control using pulse test shorter voltage Matrix Converters vectors
Antoni Arias;Emilano Aldabas;Carlos Ortega;Jordi Zaragoza;Josep Pou;Carles Jaen
2008 IEEE International Symposium on Industrial Electronics
Year: 2008 | Conference Paper |
Cited by: Papers (2)
This paper deals with the sensorless field oriented control of permanent magnet synchronous machines using test matrix converters voltage vectors. The novelty of this paper is the fact that a matrix converter is used instead of the conventional voltage source inverter and that the uncommon shorter matrix converter vectors are used as a test signals for tracking the machinepsila saliency (differenc...Show More
Overview of maximum power point tracking control techniques used in photovoltaic systems
Carles Jaen;Cristian Moyano;Xavier Santacruz;Josep Pou;Antoni Arias
2008 15th IEEE International Conference on Electronics, Circuits and Systems
Year: 2008 | Conference Paper |
Cited by: Papers (18)
Nowadays power supply systems based on photovoltaic cells have two main drawbacks even the primary energy is free and renewable. They are production cost and efficiency. In order to increase their efficiency should be interesting that the energy transfer between cells and load was done at maximum level. In this paper an overview of control techniques oriented to obtain the maximum power point trac...Show More
Optimal Voltage-Balancing Compensator in the Modulation of a Neutral-Point-Clamped Converter
Jordi Zaragoza;Josep Pou;Salvador Ceballos;Eider Robles;Carles Jaen
2007 IEEE International Symposium on Industrial Electronics
Year: 2007 | Conference Paper |
Cited by: Papers (9)
This paper presents an optimal voltage-balancing compensator for a particular type of modulation technique applied to the neutral-point-clamped converter. This modulation technique is able to completely eliminate low- frequency voltage oscillations in the neutral point. However, its dynamic for balancing voltages on the dc-link capacitors is slow. The proposed compensator generates an optimal offs...Show More
Sliding Mode Controller Applied to PWM DC-DC Converters Based on an Averaged Model
Carles Jaen;Josep Pou;Rafael Pindado;Vicenc Sala;Jordi Zaragoza
A modeling methodology applied to PWM DC-DC converters is presented in this paper. Parasitic resistors have been considered in inductor and power supply. A generalised equivalent circuit based on averaged variables is obtained for the basic structures of DC-DC converters. This circuit and the associated model are valid for continuous conduction mode and discontinuous conduction mode. This contribu...Show More
Adaptive Averaged Model Applied to PWM DC-DC Converters
Carles Jaen;Rafael Pindado;Josep Pou;Antoni Arias;Vicenc Sala
2006 12th International Power Electronics and Motion Control Conference
Year: 2006 | Conference Paper |
An adaptive model applied to PWM DC-DC converters is presented in this paper. Parasitic resistors have been considered in the converter. The coefficients of the state-space matrices, which depend on the parameters of the circuit, are calculated on-line. In the proposed method, the state vector variables should be sampled in real time, and the coefficients of state-space matrices are estimated by m...Show More
A Linear-Quadratic Regulator with Integral Action Applied to PWM DC-DC Converters
Carles Jaen;Josep Pou;Rafael Pindado;Vicenc Sala;Jordi Zaragoza
IECON 2006 - 32nd Annual Conference on IEEE Industrial Electronics
Year: 2006 | Conference Paper |
Cited by: Papers (27)
Averaging techniques have been widely applied to model PWM power electronic converters. The averaged models obtained by using this technique are very useful for the simulation of the systems as well as for the design of controllers. In this work, some general considerations about linear-quadratic regulators (LQR) are made. Then, an LQR is designed and applied to the particular case of a DC-DC buck...Show More
Adaptive Model Applied to PWM DC-DC Converters Using Averaging Techniques
2006 IEEE International Symposium on Industrial Electronics
Year: 2006 | Conference Paper |
Cited by: Papers (7)
An adaptive model applied to PWM DC-DC converters is presented in this paper. Parasitic resistors have been considered in the converter. The coefficients of the state-space matrices, which depend on the parameters of the circuit, are calculated on-line. In the proposed method, the state vector variables should be sampled in real time. Then, the coefficients of state-space matrices are estimated by...Show More
Enhancement of Carrier-Based Modulation Strategies for Multilevel Converters
J. Pou;P. Rodriguez;J. Zaragoza;V. Sala;C. Jaen;D. Boroyevich
2005 IEEE 36th Power Electronics Specialists Conference
Year: 2005 | Conference Paper |
Cited by: Papers (10)
Carrier-based modulation strategies can be improved by inclusion of zero sequences in the modulation signals. In this paper, the modulation signals of a three-level neutral-point-clamped converter are modified to achieve maximum benefit of the DC-link voltage, and to help achieve voltage balance between the DC-link capacitors. The proposed strategy is obtained from the analysis of space-vector mod...Show More
Robust method for optimal PWM harmonic elimination based on the Chebyshev functions
8th International Conference on Harmonics and Quality of Power. Proceedings (Cat. No.98EX227)
Year: 1998 | Conference Paper |
Cited by: Papers (8)
A new procedure is presented, applied to single-phase DC-AC power converters with bipolar output, in order to perform a programmed harmonic elimination using a previous calculation of notch angles. The method is based on the transformation of the trigonometric equations system into its equivalent in algebraic form by means of Chebyshev functions. This gives notable advantages in terms of convergen...Show More
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