Standalone Photovoltaic (PV) system requires a proper battery

charge controller. In this paper an efficient battery charge

controller using Buck-Boost regulator with Maximum Power

Point Tracking (MPPT) is presented. The voltage command is

determined by both the PV panel maximum power point

tracking (MPPT) control loop and the battery charging loop.

Here the controller is designed so as to balance the power flow

PV panel to the battery and load such that the PV power is

utilized effectively. The design and simulation using MATLAB

is presented in this work.