VHDL implementation of a power management algorithm for PV-battery system

This paper presents the VHDL implementation of a novel power management algorithm for standalone PV-battery system. The algorithm performs two tasks, Maximum Power Point Tracking (MPPT) and dual load regulation. The MPPT is used to maximize the PV cells' output power, and is achieved by the “fractional open circuit voltage” method. The dual load regulation distributes the PV cells' output power among the loads, and delivers any surplus or deficit power to or from the battery. The proposed VHDL design has been synthesized on Xilinx using “5vlx50tff1136” as the target FPGA. The proposed design has utilized only 1% of the resources (slice registers and look-up-tables). This result has been found to be 23% lower than a previously implemented MPPT controller..