Now days the most advance solar charge controller available in the market is Maximum Power Point Tracking (MPPT).The MPPT controller is more sophisticated and more expensive. It has several advantages over the earlier charge controller. It is 30 to 40 % more efficient at low temperature. But making a MPPT charge controller is little bit complex in compare to PWM charge controller. It requires some basic knowledge of power electronics. I put a lot of effort to make it simple, so that anyone can understand it easily.
The Maximum Power Point Tracker (MPPT) circuit is based around a synchronous buck converter circuit. It steps the higher solar panel voltage down to the charging voltage of the battery. The Arduino tries to maximize the watts input from the solar panel by controlling the duty cycle to keep the solar panel operating at its Maximum Power Point.
This tutorial will cover a project build for a Arduino based Solar MPPT charge controller. It has features like: LCD display, Led Indication, WiFi data logging and provision for charging different USB devices. It is equipped with various protections to protect the circuitry from abnormal condition.
The microcontroller used is in this controller is Arduino Nano. This design is suitable for a 50W solar panel to charge a commonly used 12V lead acid battery. You can also use other Arduino board like Pro Mini, Micro and UNO.
Specification of version-3 charge controller :
1. Based on MPPT algorithm
2. LED indication for the state of charge
3. 20x4 character LCD display for displaying voltages, current, power etc
4. Overvoltage / Lightning protection
5. Reverse power flow protection
6. Short Circuit and Over load protection
7. Wi Fi data logging
8. USB port for Charging Smart Phone /Gadgets
Electrical specifications:
1. Rated Voltage= 12V
2. Maximum current = 5A
3. Maximum load current =10
4. In put Voltage = Solar panel with Open circuit voltage from 12 to 25V
5. Solar panel power = 50W
For more details on this project,you can see my instructables page. The link is given bellow.
- Arduino Solar Charge Controller ( V- 2.0)
Solar charge controller is a key component in any photo voltaic system that uses batteries to store energy. The main function of solar charge controller it to reduce the overall system maintenance and prolongs the battery life by regulating the charging...
- Arduino Solar Charge Controller ( V-1 )
I designed this Arduino Solar Charge Controller to provide electrical power in areas where the grid can’t always provide power when needed. “At first the charge controller will check the solar panel voltage and compare it with battery...
- What The Heck Is An Mppt Charge Controller?
Maximum Power Point Tracking, frequently referred to as MPPT, is an electronic system that operates the Photovoltaic (PV) modules in a manner that allows the modules to produce all the power they are capable of. MPPT is not a mechanical tracking system...
- All About Maximum Power Point Tracking (mppt) Solar Charge Controllers
What the Heck is an MPPT Charge Controller?This section covers the theory and operation of "Maximum Power Point Tracking" as used in solar electric charge controllers.A MPPT, or maximum power point tracker is an electronic DC to DC converter that optimizes...
- Roof Top System- Its Components
A Solar System generally comprises of the following elements: Solar Panel, a Charge Controller, a Power Inverter, a Monitor and Electrical Distribution System. As seen with each other technologies each component has different manufacturers , quality,...