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Current sensorless control of a boost-type switch-mode rectifier using an adaptive inductor model

The present work describes the development of a control scheme for boost-type switch-mode rectifiers. While controllers for this circuit commonly use a shunt resistor or a magnetic field sensor to measure the instantaneous input or inductor current, here the inductor current is computed from the measured inductor voltage. This calculation requires knowledge of the physical properties of the inductor, most importantly its inductance, which are prone to change with operating conditions of the converter and throughout the lifetime of the inductor. The parameters of the inductor model are estimated during normal converter operation, and the inductor model is adapted accordingly. Simulation and experimental results confirm the effectiveness of the devised scheme in reducing the distortion of the input current. / Graduate / 0544 / aengel@uvic.ca

Identiferoai:union.ndltd.org:uvic.ca/oai:dspace.library.uvic.ca:1828/4637
Date28 May 2013
CreatorsEngel, Adrian
ContributorsNandi, Subhasis
Source SetsUniversity of Victoria
LanguageEnglish, English
Detected LanguageEnglish
TypeThesis
RightsAvailable to the World Wide Web

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