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Author Sarinana, A.
Source IEEE Xplore Digital Library
Content type Text
Publisher Institute of Electrical and Electronics Engineers, Inc. (IEEE)
File Format PDF
Copyright Year ©2005
Language English
Subject Domain (in DDC) Natural sciences & mathematics ♦ Physics ♦ Electricity & electronics ♦ Technology ♦ Engineering & allied operations ♦ Applied physics
Subject Keyword Sensorless control ♦ Voltage control ♦ Current measurement ♦ Power measurement ♦ Algorithm design and analysis ♦ Sensor systems ♦ Sliding mode control ♦ Control systems ♦ Costs ♦ Security
Abstract This paper address the estimation problem in power converters using nonlinear observers. In general, most of the schemes used to control the power converters are based on measurements of all voltages and currents involved. In this paper we present the design of dynamical systems called observers or estimators which allows to reduce the number of measurements, Ie, sensors, and still implement the controller algorithm. Using such observers makes it possible to reduce the number of sensors and thus reduce costs or even increase reliability if these soft sensors are used as backups for security purposes. In this light, we propose two nonlinear observers based on the sliding mode theory for two particular cases. In the first case, the observer allows us to eliminate the use of the DC-link voltage. In the second case, we show that it Is possible to eliminate the AC-mains sensors with such observers. Finally, the performance of these soft sensors is investigated by simulations in a control-loop which is based on the popular dead-beat space vector modulation technique
Description Author affiliation: Dept. of Electron. & Comput. Sci., ITESM, San Pablo (Sarinana, A.)
ISBN 0780390334
Educational Role Student ♦ Teacher
Age Range above 22 year
Educational Use Research ♦ Reading
Education Level UG and PG
Learning Resource Type Article
Publisher Date 2005-06-16
Publisher Place Brazil
Rights Holder Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Size (in Bytes) 574.39 kB
Page Count 6
Starting Page 1659
Ending Page 1664

Source: IEEE Xplore Digital Library