The charge controller is an integral part of the solar power plant. It depends on not only the efficiency of conversion of sunlight into energy, but generally the system is operating. The functional purpose of such devices - control charge / discharge batteries.
PWM Controllers (or PWM) technology are easier and cheaper compared to the MPPT controllers.
How it works PWM controllers solar is to use the PWM converter in the final stage of battery charge. At the beginning of the charging solar battery is actually attached directly to a battery. When the voltage at AB reaches a certain level, the controller switches to maintain a constant voltage through PWM charging current. This prevents overheating and gas generation in the battery. As the battery charging, the current gradually decreases. When AB is fully charged, the battery voltage is reduced to prevent further heating or gassing of the battery. AB is maintained in a charged condition. In this battery charging is possible up to 100%.
solar charge controller PWM have earned popularity in its categories of users.
Features PWM controllers for solar :
The use of a microprocessor to ensure the accuracy of the parameters;
Automatic voltage detection system;
Pulse width modulation sequential charging current and the charge determination of the degree of AB;