MPPT Example
Example of Maximum Power Point Tracking
Imagine a conventional controller (non MPPT) that connects the alternator (75W) to the battery (12V) to charge a discharged battery. This makes the permanent magnet alternator operate at the battery voltage which may not be the ideal voltage at which the module is capable of producing. The maximum power may be obtained at some other voltage point. By limiting the voltage to 12V, the 75W wind generator system is able to produce power limited to a 53W module. Hence potential is not reached.
With a MPPT system attached arrangement, the controller will detect the voltage at which the module gives its maximum possible voltage which in this example is of 17V. The MPPT system then operates the module at 17V and extracts complete 75W of power. This is irrespective of the current battery voltage.
