FPGA Based Design and Implementation of Spectral Envelope Preprocessor

The global issue of energy conservation demands the need of managing and coordinating power consumption. The current transients of various loads are unique, depending on application and some other parameters like load type. The "spectral envelope" representation of observed current and voltage signals used in the non-intrusive load monitoring can be a very flexible basis for computing and tracking all sorts of useful metrics about power consumption. With the help of spectral envelopes it is possible to estimate real and reactive power consumption and also harmonic contents. For power monitoring and energy scorekeeping, a FPGA (Field Programmable Gate Array) can be used to implement a Spectral Envelope Preprocessor to develop an inexpensive separate module for individual load to help precise monitoring of specific load.