On day four I set up a battery circuit for real in the workshop (diagram shown – day one) by firstly connecting the connectors from the panel to the regulator, then using separate connectors connected the regulator to the battery (after connecting new crocodile clips).Afterwards I connected the wires from the battery to the solar invertor before finally joining up the wires from the invertor (via a junction box) to the plug.
A solar inverter, or PV inverter, or Solar converter, converts the variable direct current (DC) output of a photovoltaic (PV) solar panel into a utility frequency alternating current (AC) that can be fed into a commercial electrical grid or used by a local, off-grid electrical network. It is a critical BOS–component in a photovoltaic system, allowing the use of ordinary AC-powered equipment.
|Solar Battery Circuit|
Once this had been set up I turned on the halogen lights and measured the current running through various parts of the circuit. The readings were as follows:
Panel to Regulator 1.85 amps
Regulator to Battery 1.47 amps
Battery to Inverter 6.3 amps
Inverter to Bulb 0.26 amps
This reading showed that 1.85 amps (DC) were being produced by the Solar panel of which 0.38 amps (DC) was being lost through the regulator providing the battery with 1.47 amps worth of direct current. The battery then supplied 6.3 amps of power to the inverter, which changed it to alternating current (AC) of which 0.26 was being used to light the bulb.
Grid Tied Solar Circuit