FPGA-based harmonic computation through 1-bit data stream signals from delta-sigma modulators applied to induction heating appliances (original) (raw)

2011 Twenty-Sixth Annual IEEE Applied Power Electronics Conference and Exposition (APEC), 2011

Abstract

This paper presents a field programmable gate array (FPGA) implementation of a digital circuit that measures in real-time first harmonics of voltage and current medium-frequency (25 kHz - 70 kHz) induction-heating cooking appliances. The inverter output voltage and load current are sensed using first-order delta-sigma () analog to digital converters. The coefficients of the Discrete-Time Fourier Series (DTFS) of voltage

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