Articles

The energy problems experienced in Sub-Saharan Africa today can only be solved by the decentralization of energy generation to the smallest subset possible. To achieve that. renewable energy must be considered and utilized. This supports the generation of clean energy and would contribute enormously to the “unofficial economy“ that is …

In our works. we set up a model of solar cell VLC system which was simulated in Matlab Simulink. We had verified the correction of the model and gave reasonable design to optimize the system. The energy gathering and signals detecting system was demonstrated. The data rate of it is …

The novel and simple yet efficient system of HTHPSS (High Temperature Heat and Power Storage System) suitable for the locations with high heating demand as well as electricity demand was previously proposed and investigated in terms of economic justification by the authors [9]. In the present work. a detailed dynamic …

Life cycle assessment of an innovative multi-use offshore platform design. which unites wind and wave energy production in one platform. was executed in this study. By all means. the main contributor to all of the impact categories was manufacturing processes of MUP design. Due to having a design which requires …

The mathematical model of the three-phase grid-side PWM converter in d-q synchronous reference frames is thoroughly investigated. Comparing with the tradition control way of PWM converter. this method doesn’t demand high accuracy of mathematic model. and has little sensitivity of parameter change and the external perturbation. which can control a …

This work has been devoted to modeling. simulation and analysis of a wind turbine operating at variable speed. A stable operation of the wind energy system is obtained with the application of nonlinear Backstepping Adaptive control. The overall operation of the wind turbine and its control system were illustrated by …

In this paper a variable structure control based on a sliding mode control (SMC) of a doubly fed induction generator (DFIG) grid-connected wind energy conversion system. incorporating a maximum power point tracker (MPPT) for dynamic power control has been presented. This structure has been used for reference tracking of active …

In this paper a variable structure control based on a sliding mode control (SMC) of a doubly fed induction generator (DFIG) grid-connected wind energy conversion system. incorporating a maximum power point tracker (MPPT) for dynamic power control has been presented. This structure has been used for reference tracking of active …

Biodiesel is a promising non-toxic and biodegradable alternative fuel used in the transport sector. Nevertheless. the higher viscosity and density of biodiesel poses some acute problems when it is used it in unmodified engine. Taking this into consideration. this study has been focused towards two objectives. The first objective is …

In this paper. the efficiency optimization of an axial flux permanent-magnet synchronous generator with concentrated pole windings is examined for a 3.6 kW 2000 rpm combined heat and power application. Because the efficiency of the machine is important. specific measures are taken in order to reduce losses in the machine: …