1. The PWM technology is more mature, using simple and reliable circuit, and has lower price, but the utilization rate of components is low, generally about 80%. For some areas without electricity (such as mountainous areas, some countries in Africa) to solve the lighting needs and small off-grid systems for daily power supply, it is recommended to use the PWM controller, which is relatively cheap and can also enough for daily small systems.
2. The price of MPPT controller is higher than PWM controller, MPPT controller has higher charging efficiency. The MPPT controller will ensure that the solar array is always in the best operating condition. When the weather is cold, the charging efficiency provided by the MPPT method is 30% higher than the PWM method. Therefore, the MPPT controller is recommended for off-grid systems with larger power, which has high component utilization, high overall machine efficiency and more flexible component configuration.
Post time: Oct-26-2023