Efficiency study of MPPT algorithms in HDL for full integration of solar-powered voltage converter

This paper presents a workplace for practical implementation of Maximum Power Point Tracking (MPPT) algorithms and means for comparison of their efficiency that is critical for efficient and reliable power conversion by solar cells as well as for the whole voltage conversion (VC) system. This is available by providing an option for implementation of various MPPT algorithms to Field Programmable Gate Array (FPGA) board that are designed in Hardware Description Languages (HDL). MPPT algorithms are created for utilizing the Pulse Frequency Modulation (PFM) control loop of a fully integrated DC-DC voltage converter based on high frequency switching of on-chip inductor with Photovoltaic (PV) cell as a power source for Energy Harvesting (EH) system. The whole VC system was created in standard 65 nm CMOS technology. In addition, two MPPT algorithms were created based on Perturb and Observe (P&O) method and implemented on the chip.