What is the difference between pwm and mppt controllers?
PWM is to use the digital output of the microprocessor to control the analog circuit. It adopts three-stage charging methods of strong charging, balanced charging, and floating charging; the PWM solar controller solves the problems of insufficient battery charging and short service life of the battery, but the solar panels are not fully utilized.
MPPT solar controller refers to a solar controller with the function of "Maximum Power Point Tracking". MPPT solar controller can detect the voltage and current of the solar panel in real time, and continuously track the maximum power (P=U*I) , so that the system always charges the battery with the maximum power, the MPPT tracking efficiency is 99%, and the power generation efficiency of the whole system reaches 97%, and the battery charging stage is divided into MPPT charging, constant voltage equalizing charging and constant voltage floating charging.
