Outputs (105)

An approach for solving an inverse spherical two-phase Stefan problem arising in modeling of electric contact phenomena (2017)
Journal Article

In this paper, a model problem that can be used for mathematical modeling and investigation of arc phenomena in electrical contacts is considered. An analytical approach for the solution of a two-phase inverse spherical Stefan problem where along wit... Read More about An approach for solving an inverse spherical two-phase Stefan problem arising in modeling of electric contact phenomena.

Voltages state estimator algorithm of multi-cells converter using sliding mode (2017)
Presentation / Conference Contribution

This paper deals with the development of strategies of observer and controller which allows the balancing in a close loop of the floating voltages of a multi-cellular converter. More specifically, a sliding mode control algorithm and observer is desi... Read More about Voltages state estimator algorithm of multi-cells converter using sliding mode.

Coverage optimization of UK renewable energy sources: GA based approach (2017)
Presentation / Conference Contribution

Worldwide demand for energy continues to grow
each year, while at the same time, concerns about climate change are leading to stricter emissions regulations. Renewable energy sources and distributed generation will play an increasing role in current... Read More about Coverage optimization of UK renewable energy sources: GA based approach.

Evaluation of road traffic energy harvesting using piezoelectricity (2017)
Journal Article

In modern day society, cleaner, more sustainable forms of electrical power are needed to keep costs lower and to ensure a healthier environment for future generations. The use of piezoelectric devices installed within a road would enable the capturin... Read More about Evaluation of road traffic energy harvesting using piezoelectricity.

Load flow analysis in a 110/20 kV Romanian substation (2017)
Presentation / Conference Contribution

The paper performs a load analysis in a Romanian substation. To respond to the increasing energy demand, consumption relocation and to reduce internal losses the substation has been recently retrofitted replacing old IO type circuit breakers with new... Read More about Load flow analysis in a 110/20 kV Romanian substation.

Design, control and modelling of a novel multi-input multi-output boost converter hub (2017)
Presentation / Conference Contribution

This paper reports on the design, control and modelling of a novel Multi-Input Multi-Output Boost Converter topology. The converter hub can integrate renewable energy sources such as wind turbines, photovoltaic arrays, fuel cells, etc. for provision... Read More about Design, control and modelling of a novel multi-input multi-output boost converter hub.

Mathematical model of electromagnetic field with skin-effect in closed electrical contacts (2017)
Journal Article

The mathematical model describing electromagnetic field in closed electrical contacts is elaborated. It takes into account a non-uniformity of the current density on the contact spot which can be explained by three factors: 1) physical phenomena of t... Read More about Mathematical model of electromagnetic field with skin-effect in closed electrical contacts.

A novel observer algorithm of voltages across capacitors based on the higher sliding mode control: Application to multi-cells converter (2017)
Journal Article

In this paper, advanced automatic sliding mode observers are applied to multi-cells converter. The technique facilitates the generation of the voltages image across capacitors of the
converter simply by measuring the current. Also, the technique pos... Read More about A novel observer algorithm of voltages across capacitors based on the higher sliding mode control: Application to multi-cells converter.

Comparative study of arc-to-glow transition efficiency when use multilayer condensed materials in electric contacts (2016)
Journal Article

The paper presents and discusses results of the study of arc to glow transformation at breaking of DC inductive load of a low power (less than 10 J) and low voltage (about 250 V). The ratio in duration of arcing and glowing is investigated in depende... Read More about Comparative study of arc-to-glow transition efficiency when use multilayer condensed materials in electric contacts.

A novel multi-inputs-single-output DC transformer topology (2016)
Presentation / Conference Contribution

In this paper a novel Multi- Input-Single-Output (MISO) Boost Converter topology for renewable energy systems is proposed and presented. This pro- posed topology will be used to obtain different output voltage levels from several power sources, s... Read More about A novel multi-inputs-single-output DC transformer topology.