A complete Inverter project

This project involves the development of a complete inverter system that features automatic mains switching, automatic charging when mains power is available, and automatic inverter activation when mains power is lost. The goal is to build a solar inverter capable of powering a 200-watt air conditioning load for 5 hours, with a preference for solar charging as opposed to AC 230 volts. This initiative is driven by high tariff rates in Maharashtra and frequent load shedding issues. The transformer specifications include a primary winding of 723 turns and a secondary winding of 36 turns, with a 12V 70Ah battery for the inverter. There are specific connections for a relay used for automation, with designated pin connections provided. It is advised to use a custom-wound transformer to ensure adequate voltage regulation under load.

The inverter project is designed to automatically switch between mains and battery power, ensuring continuous operation of connected loads. The inverter will utilize a microcontroller to monitor the mains supply and control the relay that connects the inverter output to the load. When mains power is available, the system will charge the battery while simultaneously supplying power to the load. In the event of a power outage, the inverter will seamlessly switch to battery power, maintaining the operation of connected devices.

The transformer plays a crucial role in this inverter design, as it steps down the voltage from the battery to the required level for the inverter output. The primary winding is designed to handle the input voltage, while the secondary winding provides the necessary output voltage. The specified turns ratio of the transformer (723:36) must be carefully calculated to ensure that the output voltage meets the load requirements. If the transformer does not meet the necessary specifications, it may require rewinding to achieve the desired performance.

The battery selection is critical for this inverter system. A 12V 70Ah battery is chosen to provide sufficient energy storage for the intended load. The battery should be regularly maintained, including checking the electrolyte levels and ensuring proper charging cycles. The inverter's charging circuit will need to be designed to prevent overcharging, which can lead to battery damage.

The relay connections are essential for the automation of the inverter system. The specified pin connections must be adhered to for proper operation. The relay will control the switching between the mains and battery supply, allowing for automatic operation without user intervention.

In summary, this inverter project is a comprehensive solution for managing power supply in areas with unreliable mains electricity. It incorporates advanced features such as automatic switching and charging, ensuring that critical loads can be maintained during power outages. Proper attention to transformer design, battery maintenance, and relay connections will be vital for the successful implementation of this inverter system.This is one complete inverter project which features automatic mains switching, automatic charging when mains is present, and automatically starts inverter when mains is off. Sir, I want to build solar inverter for driving A. C. load of 200watt for 5 hours. Also I want to charge battery by solar as well as A. c. 230 volts But preference to solar. S ince in Maharashtra now tariff rate is very high. Also load shading problems. Thank for this useful info. I dont know much about electr that is why i need a clear picture on how the component/parts are fixed to the board. You can help me send it to my email- victory4m@yahoo. com. Thank you For my inverter transformer-primary(723turns) and sec(36). And i have 12v 70ah for the inverter. What is my transformer amps rating. If is not suitable what should i do use this relay for autmation & note that the relay(shown in linked relay circuit) pin no:1 & 9 connect with circuit relay pin 11 & 21 respectivly, and relay pin no: 6 & 10 with circuit relay pin no:14 & 22, here is link which aded .

that is also in your mind that when you start design inverter, for this purpose you have need re wounded tranformer, bcoz the tranformer which is available at shops can not provide require voltage when you supplied it by battery . so you have use your own rewounded tranformer for good voltage regulation on Load . Don`t post your email or phone number in the comment box. Only put email address in the email field. Comments are moderated so it may take time for them to appear on the site. Offensive comments will be deleted. If this is a request for custom circuit, then use the wish a circuit form. I have some questions for you though, I have a Cyberpower inverter CPS 1200EI with LCD display and Exide Battery NS 200 after 7 months of working perfectly.

My inverter now keeps on charging the battery. Now it is winter season and power outages are only 1 to 2 hours a day. I regularly top up the battery with distal water when it is needed. Last time when only 23 watts bulb was running on the inverter for an hour and when main electricity came inverter kept on charging the battery. I checked the battery and it did not heat up even after the charging of 4 to 6 hours. Then I turned the inverter off removed all the cables and toped the battery with some distal water and then it remained off for one day then I connected the cables and inverted started charging the battery again in off position.

This inverter even charges the battery when the button of inverter is in off position. After charging for 2 hours inverter did not stop then I turned off the main electricity supply and turned on the supply again within few seconds and then inverter automatically stopped the charging of the battery after 30 seconds. Now my question is that whether there is some thing wrong with the inverter or the battery But for the time being inverter is working fine.

There is another thing which I have noticed. When the main supply is on and my computer is running and if I cut off the main for inverter then my computer neither restarts nor shuts down but when main is cut off by the power grid then my computer shuts down and lcd runs on the inverter then I have to restart my computer. This is a strange thing which I do not understand. 🔗 External reference