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Solar street lamps: MPPT or PWM controller

Solar controller is used in solar photovoltaic system, its full name is solar charge and discharge controller, coordinate the work of solar panels, batteries, loads, is a very important component in the photovoltaic system. Make the whole solar photovoltaic system efficient and safe operation.


At present, the common solar charge and discharge controller on the market and PWM and MPPT two kinds. MPPT controller price is the highest, what is the difference between MPPT and ordinary controller? With the MPPT controller, the charging efficiency can be improved by 30%. In other words, the MPPT controller can generate 1.3 times the charging current of the same solar panel, so that the battery can be charged faster. How the MPPT controller works: The MPPT controller will track the maximum power point in the solar panel in real time to maximize the efficiency of the solar panel. The higher the voltage, the more power can be output through the maximum power tracking, thus improving the charging efficiency. In theory, a solar power system using MPPT controllers would be 50% more efficient than a conventional one, but in our actual tests, the environmental impact around us and the loss of all kinds of energy could ultimately be 20% to 30% more efficient.