Search

New relationships between energy efficiency, illuminance uniformity, spacing and mounting height in public lighting installations were derived from the analysis of a large sample of outputs generated with a widely used software application for lighting design. These new relationships greatly facilitate the calculation of basic lighting installation parameters. The results obtained are also based on maximal energy efficiency and illuminance uniformity as a premise, which are not included in more conventional methods. However, these factors are crucial since they ensure the sustainability of the installations. This research formulated, applied and analysed these new equations. The results of this study highlight their usefulness in rapid planning and urban planning in developing countries or areas affected by natural disasters where engineering facilities and computer applications for this purpose are often unavailable. [ABSTRACT FROM PUBLISHER]

This paper studies the behaviour of a wind turbine with permanent magnet synchronous generator connected to the grid, under different control strategies, in the presence of a wind fluctuation or a grid disturbance. These control strategies applied to the generator-side converter include rotor speed, torque and generator power control. The low-voltage ride-through capability of the wind turbine is also evaluated. MATLAB/Simulink has been used for the simulations and the results show that generator power control strategy combined with the pitch angle control strategy, that activates when the rotational speed is overrated, provide the best performance in power stability studies. [ABSTRACT FROM AUTHOR]