The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
This paper presents a new structure based on a line-commutated inverter (LCI) for photovoltaic (PV) applications. The proposed LCI circuit is able to inject the DC power to the grid at the unity power factor and with reduced harmonic levels. The proposed circuit with voltage-based maximum power point tracking (MPPT) is implemented in grid-connected PV system. The experimental results show that proposed...
It is difficult issue for Photovoltaic (PV) studies to create different types of solar irradiance for PV panels because of various temperature and weather conditions. This paper proposes a solar irradiance emulator based on dc power supply. The proposed emulator allows for building the desired radiation in the photovoltaic panel tests. It is particularly useful to test PV converters such as inverters...
This paper proposes a simple circuit-based Photovoltaic (PV) simulator for testing Maximum Power Point Tracker (MPPT). The main advantage of proposed simulator is that being able to perform with low cost instead of the expensive commercial solar array simulators. In summary, the structure of the simulator is very simple due to not requirement extra components and complex control circuits, it only...
The aim of this study was to investigate the effect of boron compounds on fire protection properties of intumescent coating based on ammonium polyphosphate (APP). Three kinds of boron compounds namely boric acid (BA), zinc borate (ZB) and melamine borate (MB) were used. Total amount of flame retardant additive was kept constant at 30 wt%, and boron compounds were used at three concentrations of 1,...
Nowadays, DC/DC converters are widely used in industrial applications and renewable energy systems. A SEPIC (single-ended primary inductance converter) DC-DC converter is capable of operating in either step-up or step-down mode and commonly used in a battery charger system. This paper presents the modeling and analyzing of the SEPIC with coupled and uncoupled inductors. In this study, the state-space...
The output power of PV system can drastically decrease when photovoltaic modules under partially shaded condition. Therefore, partially shaded condition is a big issue to proper tracking maximum power point in photovoltaic systems. This paper proposes a new simple method which can track the global maximum power point under this condition. The proposed method is obtained by combining the incremental...
Inferior paraseptal accessory pathways (APs) have a wide distribution and prediction of AP location before radiofrequency ablation is very important in such pathways. We aimed to estimate successful ablation site based on electrocardiogram in 137 patients (mean age: 25.8±9.0; 126 males) with single manifest inferior paraseptal AP.Right endocardial inferior paraseptal APs were discriminated from left...
Objectives For the purpose of flight safety military aircrew must be healthy. P-wave dispersion (PWD) is the p-wave length difference in an electrocardiographic (ECG) examination and represents the risk of developing atrial fibrillation. In the study we aimed at investigating PWD in healthy military aircrew who reported for periodical examinations. Material and Methods Seventy-five asymptomatic military...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.