Microcontroller Based Current Sensorless MPPT Controller

Abstract

This work proposes a current-sensor less tracker that eliminates the use of the current sensor, by using only the voltage sensors. Getting rid of the current sensor has many merits such as saving cost, decreasing complexity, and increasing the efficiency and the power density of the tracker. Digital control is a flexible and attractive hardware design option, becoming lower cost, and getting faster. These competitive tools have made the application of many sophisticated control algorithms possible in this field. Boost converter with average current mode control is considered to validate the current sensorless (observer based) Perturb and Observe (P&O) maximum power point tacking (MPPT) algorithm. The above proposed algorithm is implemented through microcontroller (Arduino) in digital flat form.