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This paper presents a parallel architecture for an N-digit and B multiple-valued logic analog to digital converter (B-MVL-ADC), where B stands for the number of levels of the multiple-valued logic. The B-MVL-ADC is based on the modulo (MOD) operator and is built by making N replicas of 1-digit converter. Simulations and discrete implementation results, for the binary ADC (2-MVL-ADC) and for the 3-MVL-ADC...
In grid-connected Photovoltaic (PV) applications, DC-links based on large electrolytic capacitors are used to attenuate voltage oscillations caused by the sinusoidal power injection into the grid, where the electrolytic capacitors introduce reliability problems. This paper proposes the unified modeling of the complete PV system in typical grid-connected operation conditions to design control strategies...
This paper suggest a way of reducing the power losses of a DC electric railway system by means of the appropriate and simultaneous voltage control of traction substations while satisfying the requirements of the European Standard EN 50163 about “Supply voltage of traction systems”. The same algorithm has been also used to minimize the total energy cost of the system when different energy prices are...
This paper describes a new strategy to control a particular structure of three phase four wires LC coupled parallel hybrid power filter (APF) for harmonics cancellation. The main differential point of the studied structure consists of the connection of neutral wire to negative of DC bus in the inverter, thus avoiding the need of split capacitors at the DC bus [1]. The LC coupling and a particular...
This paper describes a new strategy to control a particular structure of three phase four wires LC coupled parallel hybrid power filters (APF) for harmonics cancellation. The main differential point of the studied structure consists of the connection of neutral wire to negative of DC bus in the inverter, thus avoiding the need of split capacitors at the DC bus. The LC coupling and a particular control...
This paper presents a new structure and control method for three phase four wires LC coupled parallel active power filters (APF) for harmonics cancellation. The main differential point with regard to other structures used in the past consists of the connection of neutral wire to negative of DC bus in the inverter, thus avoiding the need of split capacitors at the DC bus. The LC coupling and a particular...
This paper presents a new structure for three phase four wires hybrid active power filters (APF). The main point with regard to other published structures consists of the connection of neutral wire to negative of DC bus in the inverter, thus avoiding the need of split capacitors at the DC bus. A particular control of voltage at the passive section of the filter allows the use of low voltage at the...
This paper presents a novel approach for the connection of renewable energy sources to the utility grid. Due to the increasing power capability of the available generation systems, a three-level three-phase neutral-point-clamped voltage-source inverter is selected as the heart of the interfacing system. A multivariable control law is used for the regulator because of the intrinsic multivariable structure...
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