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This paper presents an approach to the problem of controlling the electricity generation of series hybrid electric vehicles (SHEVs) and proposes an algorithm with the goal to minimize fuel consumption. Starting from the knowledge of the vehicle electric generator consumption maps, as well as information on the vehicle battery behavior, and on some overall(More)
This paper explains how the lead-acid models described previous paper can be utilized in practice. That paper does not supply detailed information on how to identify the several parameters of the proposed models, and it defines a whole family of models, but does not discuss which model of the family is adequate for a given purpose. These two issues are(More)
In a series hybrid electric vehicle (SHEV), an electric generator feeds a dc busbar (containing an electrochemical accumulator), which, in turn, feeds the vehicle traction system. A very important part of the vehicle is its control system that has to maximize the vehicle efficiency, while keeping the emissions within predetermined limits. To attain this(More)
Nowadays the increasing share of renewable sources requires a direct participation of all form of generation to the secure operation of the electric power system, at least in terms of power balancing and voltage regulation. Resiliency, controllability and flexibility are the key factors that characterize a smart grid, compared to traditional energy systems.(More)
This paper presents a dynamical model for simulating combined cycle power plants to be used for assessing the plant behavior during large transients and for restoration procedures. The 80th dynamic order model considers the complex structure of the heat recovery steam generator and calculates the main variables that are critical during these transients. The(More)
This paper approaches the problem of voltage unbalances due to single-phase Distributed Generation (DG), like small-scale photovoltaic power plants. In LV distribution lines, the random installation of energy sources on one of the three phases can significantly unbalance line currents, especially when the load demand is low; in weak networks, this can(More)
Today electrified transport systems such as underground systems, light railways, trolley bus systems and cable car railways will quickly see the development of electric vehicles with onboard energy storage to be recharged through various kind of charging stations.These systems are usually connected to the grid through a static AC/DC conversion system, which(More)
The number of operating High Voltage Direct Current (HVDC) interconnections is continuously increasing worldwide. This paper presents an overview of HVDC systems in Italy, including operating and planned links. The different technology solutions, in particular Half Bridge Voltage Source Converter (HB-VSC) and Line Commutated Converter (LCC) are compared(More)
In the framework of reducing the impact of the electric system infrastructure, the paper presents the successful field application of the principle of active shielding of the magnetic field of HV overhead lines. Two plants have been deployed and are currently being operated since some years on a 132kV and a 400kV line. The solution to be used locally, where(More)
In modern power systems, the energy storage technology provides new business opportunities to producers, consumers and to their combination (prosumers). In fact, storage not only enables them to provide the electric grid with regulation, reserve and backup services, but actually fills the gap between the timing of production and consumption. This gives(More)