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Electronic meter with custom integrated circuit for electric energy measurement; Medidor eletronico de energia eletrica com circuito integrado dedicado

Abstract

The design and implementation of an electrical energy electronic meter for operation at low voltages, according to two steps of development carried out in Centro de Pesquisas de Energia Eletrica - CEPEL is described. In the first step, an electronic meter with discrete commercial components has been developed, in order to demonstrate to the Brazilian power suppliers the feasibility of such a device for electrical energy metering and charging. The second step was constituted by the design of an integrated circuit, aiming the reduction of the cost of the meter as well as the enhancement of its reliability. Several techniques of electrical energy measurement are presented. The meter with discrete components makes use of a time division multiplier (TDM), in order to determine the active power in the load. Voltage and current levels have been reduced through the use of voltage and current sensors compatible with the TDM's inputs. A V-F converter employing continuos integration, has been used for the determination of the energy consumed by the load through the integration of the TDM's output signal. Most of the discrete components of the meter have been replaced by the dedicated integrated circuit. The TDM has remained essentially the same, but  More>>
Publication Date:
Apr 01, 1990
Product Type:
Thesis/Dissertation
Report Number:
ETDE-BR-0177
Reference Number:
EDB-01:029530
Resource Relation:
Other Information: TH: Tese (M.Sc.); 99 refs., 18 figs.; PBD: Apr 1990
Subject:
42 ENGINEERING; POWER SUPPLIES; ELECTRIC POWER; ELECTRIC POTENTIAL; POWER METERS; ENERGY CONSUMPTION; BENCH-SCALE EXPERIMENTS; FEASIBILITY STUDIES; DESIGN; INTEGRATED CIRCUITS; COST ESTIMATION; RELIABILITY; ACCURACY; TIME DEPENDENCE; ALTERNATING CURRENT; ANALOG-TO-DIGITAL CONVERTERS; SPECIFICATIONS; ENGINEERING DRAWINGS; STANDARDS; PERFORMANCE TESTING; ERRORS
OSTI ID:
20113077
Research Organizations:
Universidade Federal, Rio de Janeiro, RJ (Brazil). Coordenacao dos Programas de Pos-graduacao de Engenharia
Country of Origin:
Brazil
Language:
Portuguese
Other Identifying Numbers:
TRN: BR00B0237
Availability:
Available to ETDE participating countries only(see www.etde.org); commercial reproduction prohibited; OSTI as DE20113077
Submitting Site:
BR
Size:
131 pages
Announcement Date:

Citation Formats

Caldas, Roberto Pereira. Electronic meter with custom integrated circuit for electric energy measurement; Medidor eletronico de energia eletrica com circuito integrado dedicado. Brazil: N. p., 1990. Web.
Caldas, Roberto Pereira. Electronic meter with custom integrated circuit for electric energy measurement; Medidor eletronico de energia eletrica com circuito integrado dedicado. Brazil.
Caldas, Roberto Pereira. 1990. "Electronic meter with custom integrated circuit for electric energy measurement; Medidor eletronico de energia eletrica com circuito integrado dedicado." Brazil.
@misc{etde_20113077,
title = {Electronic meter with custom integrated circuit for electric energy measurement; Medidor eletronico de energia eletrica com circuito integrado dedicado}
author = {Caldas, Roberto Pereira}
abstractNote = {The design and implementation of an electrical energy electronic meter for operation at low voltages, according to two steps of development carried out in Centro de Pesquisas de Energia Eletrica - CEPEL is described. In the first step, an electronic meter with discrete commercial components has been developed, in order to demonstrate to the Brazilian power suppliers the feasibility of such a device for electrical energy metering and charging. The second step was constituted by the design of an integrated circuit, aiming the reduction of the cost of the meter as well as the enhancement of its reliability. Several techniques of electrical energy measurement are presented. The meter with discrete components makes use of a time division multiplier (TDM), in order to determine the active power in the load. Voltage and current levels have been reduced through the use of voltage and current sensors compatible with the TDM's inputs. A V-F converter employing continuos integration, has been used for the determination of the energy consumed by the load through the integration of the TDM's output signal. Most of the discrete components of the meter have been replaced by the dedicated integrated circuit. The TDM has remained essentially the same, but the V-F converter has been changed into a dual-slope one, which is more adequate for implementation in a single chip. The tests performed with the prototypes of the meter including both the meter with discrete components and the meter with the custom-made integrated circuit have presented measurement errors of less the 0,2 %. The initial goal, according to Brazilian specifications of electromechanical meters and international specifications for electronic meters, was 1 %. (author)}
place = {Brazil}
year = {1990}
month = {Apr}
}