Formula Panel Solar

Panel Solar

To understand the electronic behavior of a solar cell, it is useful to create a model which is electrically equivalent, and is based on discrete electrical components whose behavior is well known.

An ideal solar cell may be modelled by a current source in parallel with a diode; in practice no solar cell is ideal, so a shunt resistance and a series resistance component are added to the model. The resulting equivalent circuit of a solar cell is shown on the left. Also shown, on the right, is the schematic representation of a solar cell for use in circuit diagrams.

Just as electrical devices are rated by the power that they use while they are running, solar panels are rated by the amount of power that they produce. If you look at the back of a solar panel, you will see a plate that lists the panel’s maximum power rating (usually abbreviated Wmp). You will see other things listed there too: One of them is the Vmp (the voltage of the panel at maximum power), and another is the Imp (the current of the panel at maximum power). Equation 1: ENERGY = POWER X TIME

Energy Transferred = Power (Watts) x Time (secs).Power Energy

Not wanting to seem TOO helpful, the units used in these maps are “kWh/m2.day”. Don’t worry about it, you can read the color-coded numbers as “Hours of Peak Sun per day”, and plug them into Equation 1 with your solar panel rating to calculate the amount of energy (in watt-hours) that a particular solar panel can produce in a day: Wmp * Peak Sun Hours/day = watt-hours/day