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How to use sg3525 as a feedback voltage controller, PWM generation and duty cycle control. What is solar inveter? As it name suggests solar inveter is used to convert solar dc power into AC power. Solar panel energy is store in batteries using. Dc power stored in batteries is converted into AC power using inverter. Inverter is power electronics dc to ac converter. There are many applications of in power system, industrial and domestic usage. Block diagram of solar inverter is shown below.
Block diagram of solar inverter given below is self explainatory. But if you have still any question about it, you are welcome to write it in comments. Solar charge controller is used to charge battery back. It must to use to solar charge controller to charge battery bank. Otherwise it may damage your battery bank due to over charging and discharging. There are many types of inverters available in market.
According to output wave form of inverter there are three types of inverter available in market: • Square wave inverter • Modified sine wave inverter • sine wave inverter you can use any kind of inveretr. But it is recommended to you pure sine wave inverter. Because it have a lot of advantages than other type of inverters. Circuit diagram of solar inverter: Circuit diagram of solar inverter using Sg3525 is given below.
I have explained all the main components and their working below. I also posted a separte articles on pulse width modulation IC or PWM controller IC Sg3523. Let’s start with basic working of this project. Sg3525 is used control output voltage of inverter by feed back voltage control method. It is also used to drive MOSFET’ connected with trnasformer. Both MOSFET is used as low side connection.
Sg3525 have built in circuit to drive low side connected MOSFET”s. I have posted a separate article on Sg3525 working and its configuration. I have explained each and everything you need to know to used Sg3525 PWM controller IC. To know more abou it check this article: ““. Circuit diagram of solar inverter using sg3523 In this circuit diagram push pull topology of dc to dc converters is used to converter DC voltage source into AC voltage. Step up transformer is used to step up voltage from 12 volt to 220 volt AC. Center tap transformer is used in this project.
Voltage divider circuit at the output is used to give feedback to Sg3525. Sg3525 control duty cycle of PWM using this feed back voltage. If you want to know how Sg3525 PWM controller controls output voltage and duty cycle of PWM, check above mentioned article on Sg3525. At the right side of circuit diagram is a solar charge controller. This solar charge controller can be used for a battery up to 7.2AH only. Solar charge controller is used to charge battery. If you want to design solar charge controller of high rating, check following article: ““ This is all about solar inverter using Sg3525.
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