An experimental investigation of modified predictive hysteresis control based MPPT strategy for PV applications

Simple DC micro grid is presented in this paper. The dc micro grid consists of PV module, Switched Inductor with Voltage Multiplier Converter (SIVMC), DC load or battery and maximum power point tracking controller. Switched Inductor with Voltage Multiplier Converter (SIVMC) is used due to its inherent features such as high gain, low voltage stress on the switch and better efficiency. For maximum power point tacking, modified maximum power point tracking algorithm based on fixed frequency predictive hysteresis controller is proposed in this paper. The MPPT controller includes two stages, the first stage is the well-known Incremental Conductance algorithm and the second stage is based on the predictive hysteresis controller. Adding predictive hysteresis stage to the IC algorithms give some advantages such as: fast tracking response, less ripple at the power due to the use of small incremental value.