IF PWM solar charge controller is compared to a Pentium dual core CPU, then MPPT will be a Pentium quad core. Much powerful than PWM. MPPT is the acronym of Maximum Power Point Tracking. Even you are not an expert, You can tell from the name of both types that it is more high-tech. As the amount of sunlight varies, the load characteristic that gives the highest power transfer efficiency changes, so that the efficiency of the system is optimized when the load characteristic changes to keep the power transfer at highest efficiency. This technology enables the controller to function in a way that it can optimize the output at the highest efficiency of the solar arrays under the given circumstances. This load characteristic is called Maximum Power Point. And Maximum Power Point Tracking is the process of finding this point and keeping it there. It is also used in the wind turbines, optical power transmission etc.

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