2439 Articles found
Inderscience Publishers Articles
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Energy sustainable development through energy efficient heating devices and buildings
Energy devices and buildings are sustainable if, when they operate, they use sustainable (renewable and refuse) energy and generate nega-energy. This paper covers three research examples of this type of sustainability: (1) use of air-to-earth heat ...
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Photovoltaic electricity production in a two-floor house in Serbia
An attractive solution for a sustainable present and future is to integrate photovoltaic (PV) panels into building envelopes. For these PV panels applied in a two-storey house in Belgrade-Serbia, we use software EnergyPlus to investigate its ...
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Completion of Belene Nuclear Power Plant: project perspectives
The development of Belene NPP began with site selection in the 1970s, site characterisation in 1980–1981, and a decision to proceed in 1981. Construction was suspended for financial reasons in 1991. Now the state authorities have taken steps to ...
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Decision-making under risk and uncertainty
Fuzzy sets and interval analysis tools to make computations and solve optimisation problems are presented. Fuzzy and interval extensions of Decision Theory criteria for decision-making under parametric uncertainty of prior information ...
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Modelling of the hydro-generator local network operation and load disturbance rejection
The paper describes models of the local network operation of the hydraulic turbine-generator unit. Two different models are proposed. They describe the dynamic behaviour of a system in which the unit is connected to an equivalent system. A nonlinear ...
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Fuzziness and fuzzy modelling in Bulgaria's energy policy decision-making dilemma
The decision complexity resulting from imprecision in decision variables and parameters, a major difficulty for conventional decision analysis methods, can be relevantly analysed and modelled by fuzzy logic. Bulgaria's nuclear policy decision-making ...
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The impacts of nuclear facilities on property values and other factors in the surrounding communities
This paper addresses the issue of the impact of the siting of nuclear facilities on the adjacent communities. It reviews previous studies on the issue and then empirically examines the impacts of seven major nuclear facilities located throughout the ...
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The Kozloduy absurdity: legal and political dimensions of the Bulgarian Nuclear Power Plant issue
The issue of Kozloduy NPP is long-standing and sensitive. Complicated technical, legal, economical, political and purely ethical issues are involved in it. Their entire review in this brief presentation is impossible. The paper therefore only dwells ...
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Power quality issues and power electronics
Harmonics in the distribution network have become an area of keen interest for utilities, power consumers and academic researchers due to its potentially disruptive impact on economy. This interest has lead to the development of a large number of ...
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Harmonics impacts evaluation for single-phase traction load
A planned electric utility substation supplying the single-phase traction load at New Haven, CT, USA was evaluated with regard to several important aspects of power quality. Harmonics: the trains are non-linear and time-varying loads. Harmonic ...
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Characterisation of power quality disturbances based on wavelet transforms
This paper presents a new technique for detecting and characterising disturbances in power systems based on wavelet transforms. The voltage signal under investigation is often corrupted by noises, therefore the voltage signal is first denoised using ...
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Power factor improvement using active filter for unbalanced three-phase non-linear loads
In this paper, a modified shunt active filter is used under unbalanced three-wire supply voltages with non-linear loads. The main objective of the proposed shunt active filter is to control the three-phase supply currents both in its waveform, ...
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A novel shunt active filter algorithm: simulation and analog circuit-based implementation
Active power filters are widely accepted and implemented as a reliable means for solving power quality problems and supplying clean power to the end user. In this paper, a novel three-phase shunt active filtering algorithm is proposed and simulated. ...
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A new transformerless series hybrid active power filter (TL-SHAPF) topology
This paper presents a new transformerless series hybrid active power filter topology (TL-SHAPF). The active filter is in series with a capacitor. This combination is in parallel with an inductor and the entire arrangement is inserted in series with ...
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Modelling of DSTATCOM for distribution system
This paper deals with the simulation of distribution static synchronous compensator (DSTATCOM) for improving power quality of a distribution system feeding linear as well as non-linear loads. Nowadays, there are an increasing number of non-linear ...
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Analysis and design of single-phase power factor-corrected AC–DC Cuk converter with high-frequency isolation
In this paper, an analysis and design of a high-frequency transformer isolated single-phase buck-boost AC–DC Cuk converter is presented for both discontinuous and continuous conduction modes (DCM and CCM) of operation. Both modes of operation are ...
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Active waveshaping of AC mains current in direct torque-controlled permanent magnet synchronous motor drive
This paper deals with the power quality improvement of AC mains in Direct Torque-Controlled (DTC) permanent magnet synchronous motor (PMSM) drive using active wave shaping techniques. For this purpose, different topologies for active wave shaping of ...
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A novel harmonic mitigator-based 12-pulse rectification for vector-controlled induction motor drives
This paper presents an optimised 12-pulse autotransformer-based AC–DC converter with reduced kVA magnetics for reducing the harmonic distortion in AC mains current in a vector-controlled induction motor drive (VCIMD). The proposed AC–DC converter ...
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Harmonic assessment of electrical power systems
Advances in semiconductor technology have resulted in an escalation in the numbers and power ratings of non-linear loads connected to the power system. At all voltage levels, equipment is being installed which generates harmonics. At transmission ...
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Main results of life extension concept application at LNPP Unit 1
The life extension (LE) concept for LNPP Units of the first generation was based on main technical and economic principles. The following 'irreplaceable' components have been selected at LNPP Units: for the reactor facility – reactor metal ...