50 watt Solar Inverter with Charger Circuit

The following post describes a basic 50 watt solar inverter circuit comprising of it’s own battery charger and a programmed changeover relay system for switching the battery to the inverter not having solar energy.

The design:

The proposed solar inverter with battery charger circuit mostly contains two phases viz: the  50 watt inverter, and the automatic relay changeover.

In the course of day time for so long the sun light stays realistically powerful, the panel voltage is utilized for charging the battery as well as for running the inverter via the relay changeover contacts.

The automated changeover circuit predetermined is placed such that the connected relay trips OFF when the panel voltage drops below 13 volts.

The above motion disconnects the solar panel from the inverter and links the charged battery with the inverter so that the output loads carry on and operate making use of the battery power.

50 watt Solar Inverter Charger Circuit for Science Project

Circuit Explanation:

Resistors R1, R2, R3, R4 together with T1, T2 and the transformer forms the inverter section. 12 volts used across the center tap and the ground begins the inverter instantly, nevertheless here we will not hook up the battery instantly at these points, quite by means of a relay changeover phase.

The transistor T3 with the connected parts and the relay forms the relay change over stage The LDR is stored outside the house or at a position where it can feel the day light.

The P1 preset is modified such that T3 just prevents carrying out and removes the relay in the event the ambient light collapses below a particular level, or simply just when the voltage goes below 13 volts. This undoubtedly occurs when the sun light turns into too weak and is not anymore in a position to maintain the stipulated voltage levels.

In spite of this provided that sun light continues to be bright, the relay stays activated, hooking up the solar panel voltage straight to the inverter (transformer center tap) via the N/O contacts. Hence the inverter evolves into workable by way of the solar panel during day time.

The solar panel is furthermore at the same time useful for charging the battery via D2 during day time so that it charges up fully by the time it gets dusk.

The solar panel is chosen such that it by no means produces more than 15 volts even at peak sun light levels.

The maximum power from this inverter will never be a lot more than 50 watts.

A MOSFET based solar inverter could be observed Right here

solar charger inverter school project circuit
Parts List for the suggested solar inverter with charger circuit meant for science projects.

R1,R2 = 100 OHMS, 5 WATTS

R3, R4 = 15 OHMS, 5 WATTS

T1, T2 = 2N3055, MOUNTED ON SUITABLE HEATSINK

TRANSFORMER = 9-0-9V, 3 TO 10 AMPS

R5 = 10K

R6 = 0.1 OHMS 1 WATT

P1 = 100K PRESET LINEAR

D1, D2 = 6A4

D3 = 1N4148

T3 = BC547

C1 = 100uF/25V

RELAY = 9V, SPDT

LDR = ANY STANDARD TYPE

SOLAR PANEL = 17 VOLTS OPEN CIRCUIT, 5 AMPS SHORT CIRCUIT CURRENT.