But burning fossil fuels is said to be the reason behind Global warming and then climate change. We have to move away from fossil fuels towards renewable energy sources such as solar, wind, geothermal, hydroelectric, etc.
I’m taking this chance to thank each and every inventor who played a significant part in the Renewable energy industry with their contributions. Sharing this post will be a tribute to them. Let’s do it now.
In this video, I’m going to show you how to design a home solar power system by yourself. We will discuss in detail about the things you need, how to calculate the ratings of the components. How to connect them together. You need to design and install a home solar power system for your house or office.
Table of Contents
Main Components of a Home Solar Power System
1. Solar Panel
2. Charge controller
3. Battery
4. Inverter
What Is a Solar Panel Module?
A solar panel is a set of solar cells made of silicon to absorb solar energy and convert to electricity. Solar panels can be classified on the basis of structure and wattage. You have to calculate the wattage of the solar-based on the Power consumption Of your property.
What is a Charge Controller?
A charge controller is an electronic device that is used to protect the battery from overcharging, over-discharging thereby increasing battery life. Different types of charge controllers are available in the market.
What is the Battery?
The battery is used to store the solar energy in the chemical form so that we can use it when solar energy is unavailable. Different types of batteries are available in the market. A deep cycle solar battery is best suited because they are affordable. Lithium-Ion batteries are expensive but they are the best performing one.
What is an Inverter?
The battery output is DC (direct current).
An Inverter is used to convert that DC to 230 v AC which is the ideal input of the home appliances. We will have to calculate the wattage of the inverter. We will do it later.
How to calculate power Requirements of Your Property?
Then Power Consumption will be
= (50 * 4) + (16*10)
= 360 Wh
How to Calculate the Ah of the Battery?
Rating of the battery = Power Needed / voltage of the battery
= 360 Wh / 12 V
Considering we are not going to completely discharge the battery, add an extra 10 Ah to the battery. Then we’ll get 40 Ah.
How to calculate the wattage of this the Solar Panel?
The wattage of the solar panel can be calculated by dividing Ah of the battery with Peak Solar hours. Then Multiply it with the voltage of the battery. PSH or peak solar hours is total hours of peak solar radiation (1000 W / 1M^2).
=(Ah of battery / PSH) * Voltage
We have to replace 30 Ah of the battery. So,
=( 30 Ah / 5 h ) * 12 = 72 W
There will be System losses.
72 W / 0.65 ~= 100 W
A solar panel with 100 W can charge 30 Ah battery in 5 hrs.
Rating of battery and Inverter
A 100 W solar panel can give a maximum of 5 A current. So a 5 A charge controller is enough for this system. And when it comes to inverter 50/300/500 W one will do the trick.
I note that some people are connecting the inverter to the batt. Some are connecting the inverter to the charge controller. Does this matter ? if so what’s the difference ?
If the change controller rating is high enough to handle max possible current drawn by the inverter. I used a 10A charge controller. That’s why I connected the inverter to the battery. If you are using a high-rated Charge controller you can safely connect the inverter to the charge controller. To prevent over-discharge of the battery you should connect the inverter to the charge controller.
Pls how did arrive at that 5A
and 5A charge controller
Pls how did arrive at that 5A
and 5A charge controller