Showing 1 - 10 of 230
An automatic global and direct solar spectral irradiance system has been designed based on two LICOR spectroradiometers equipped with fibre optics and remote cosine sensors. To measure direct irradiance a sun tracker based on step motors has been developed. The whole system is autonomous and...
Persistent link: https://www.econbiz.de/10011044020
The last year has seen enormous advances in the science and technology of amorphous silicon alloy photovoltaic. A new world record in cell efficiency has been achieved; a large volume manufacturing plant is also operational. Innovative building-integrated products have been developed which are...
Persistent link: https://www.econbiz.de/10010804836
The DC permanent magnet motor coupled with centrifugal pump has the better matching when directly powered by photovoltaic (PV) array. The important parameter of DC permanent magnet (DC PM) motor is magnetic field constant. The method for the determination of optimum magnetic field constant of DC...
Persistent link: https://www.econbiz.de/10010805474
In this paper, a novel control strategy for frequency control in stand-alone application based on coordination control of fuel cells (FCs) and double-layer capacitor (DLC) bank in an autonomous hybrid renewable energy power generation system is implemented. The proposed renewable energy power...
Persistent link: https://www.econbiz.de/10010805588
In this paper a new method based on multi-objective modified Honey Bee Mating Optimization (MHBMO) algorithm is presented to investigate the DFR problem with the consideration effect of the renewable energy sources (RESs). In the proposed algorithm, a new mating process is suggested to overcome...
Persistent link: https://www.econbiz.de/10010806417
Due to the PV module simulation requirements as well as recent applications of model-based controllers, the accurate photovoltaic (PV) model identification method is becoming essential to reduce the PV power losses effectively. The classical PV model identification methods use the manufacturers...
Persistent link: https://www.econbiz.de/10010930865
This paper presents a single-phase five-level grid-connected PV inverter with a novel dual reference modulation technique. Two reference signals identical to each other with an offset equivalent to the amplitude of the triangular carrier signal were used to generate PWM signals. The inverter...
Persistent link: https://www.econbiz.de/10011044581
This paper presents a high efficiency photovoltaic (PV) panel integrated power conditioning system (PCS) by proposing a high efficiency step-up DC–DC converter. The suggested PCS consists of a high efficiency DC–DC converter and a single-phase DC–AC inverter. Each PV panel has its own...
Persistent link: https://www.econbiz.de/10011045760
The Earth-Air Heat Exchanger (EAHE) is a device used to improve the thermal condition of built environments, allowing the reduction of electrical energy consumption of traditional air conditioner systems. Fundamentally, its operational principle is based on fluid mechanics and heat transfer,...
Persistent link: https://www.econbiz.de/10011263732
This paper compares the daily solar irradiation available at surface estimated by the MERRA (Modern-Era Retrospective Analysis for Research and Applications) re-analysis of the NASA and the ERA-Interim re-analysis of the European Center for Medium-range Weather Forecasts (ECMWF) against...
Persistent link: https://www.econbiz.de/10011116531