About The principle of natural convection of photovoltaic inverter
A natural convection system works on buoyancy principle wherein air flow due to changes in density. As shown in the schematic Fig. 1, radiation penetrate the glass and heats the PV panel.
A natural convection system works on buoyancy principle wherein air flow due to changes in density. As shown in the schematic Fig. 1, radiation penetrate the glass and heats the PV panel.
The first study let the natural air circulate through the channel to cool the photovoltaic by natural convection. The second study uses a centrifugal fan to force the air inside the channel to cool photovoltaic by forced convection, as shown in Fig. 4 .
PWM PV inverters was built and tested for more than 100 days to evaluate the long-term performance of the PV inverter. The key figure-of-merits for grid-interface operation, such as efficiency, power density, total harmonic distortion (THD), leakage current, are measured, analyzed, and reported.
From the experiments, it was deduced that natural convection cooling (with a 120 mm air gap) enhanced the daily energy generation and efficiency of the panels by 1.7 % and 1.2 %, respectively, whereas forced convection (with an airspeed of 3 m/s) enhanced the daily energy generation and efficiency by 4.4 % and 4.0 %.
The effect of natural convection on the cooling of the energy inverter. This article focuses on methods of cooling and dissipating thermal energy from electrical components installed in electric vehicles, control centers, information technology, space projects and others.
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