A programmable mixed-signal ASIC for power metering

Autor:	R.D. Baertsch, Steven L. Garverick, K. Fujino, Donald Thomas Mcgrath
Rok vydání:	1991
Předmět:	Engineering business.industry Low-pass filter Electrical engineering Power factor Filter (signal processing) AC power CMOS Electronic engineering Metering mode Electrical and Electronic Engineering business Digital filter Digital signal processing
Zdroj:	IEEE Journal of Solid-State Circuits. 26:2008-2016
ISSN:	1558-173X 0018-9200
DOI:	10.1109/4.104195
Popis:	A programmable mixed analog-digital integrated circuit for use in power-metering applications is described. The IC acquires analog input signals from three pairs of voltage and current sensors and provides outputs proportional to RMS voltages and currents: real, reactive, and apparent power; and power factor, phase angle, and frequency. Combinations of two of the metering functions may be computed simultaneously and outputs are provided in both bit-serial digital and pulse-width-modulated formats. Sensor and analog-to-digital converter errors are corrected using programmable digital signal processing. To achieve accurate operation over a wide, continuous range of frequencies. the IC measures the frequency of its input signals and adjusts filter characteristics and calibration coefficients accordingly. The device has been fabricated in a 5-V 1.5- mu m CMOS process and, with gain calibration alone, has achieved an absolute metering accuracy of 0.04%. >
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4fe4d94c6b61df93a9fa7d6ba00b07da https://doi.org/10.1109/4.104195 Zobrazit plný text záznamu