Event Details
Current sensorless control of a boost-type switch-mode rectifier using an adaptive inductor model
Presenter: Adrian Engel
Supervisor:
Date: Mon, May 6, 2013
Time: 15:00:00 - 00:00:00
Place: ECS 467
ABSTRACT
Summary:
In the seminar, the development of a control scheme for boost-type switch-mode rectifiers will be described. This power electronic converter is commonly used for single-phase AC-to-DC power conversion and can be controlled so that it achieves a near-unity power factor (active power factor correction). 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. In the presented control scheme, the parameters of the inductor model are estimated during normal converter operation, and the inductor model is adapted accordingly.