Design of net meter using FPGA

The rooftop solar power generation systems with Solar Energy Meter (SEM) is implemented to satisfy the increasing demand for electricity. Gross Energy Meter (GEM) and Net Energy Meter (NEM) are the two types of solar meter where unidirectional Gross Energy Meter is already in use. This paper highlights the design of bidirectional Net Energy Meter which is programmed in FPGA for Microgrid with multiple user. This Microgrid with multiple user is connected to the utility grid. If the generated electricity from the PV array is more than the demand, then the excess power is fed to the utility grid and if this generated power is not enough then, the power is drawn from the utility grid. Here the designed Net Energy Meter will calculate the Net amount of money that is to be credited to electricity board by the Microgrid owner or vice versa. Here to transfer sensed the voltage and current from each residence to FPGA at central unit a wireless network set up.