Title :
Analysis of buck-boost converter inductor loss using a simple online B-H curve tracer
Author :
Chung, H.Y. ; Poon, F.N.K. ; Liu, C.P. ; Pong, M.H.
Author_Institution :
Dept. of Electr. & Electron. Eng., Hong Kong Univ., Hong Kong
fDate :
6/22/1905 12:00:00 AM
Abstract :
A simple method to plot online B-H curves and calculate the core loss of the inductor in a conventional buck-boost power converter is developed. In order to obtain a reliable loss data, measurement error and phase shift error are analyzed and then quantified. A new method to minimize measurement error is given. A new core loss model in terms of switching duty cycle is presented. This model predicts variation of core loss of an inductor operating in various conditions in a switching converter. This inductor model can be generalized to inductors in other switching converter topologies
Keywords :
DC-DC power convertors; loss measurement; losses; magnetic cores; power inductors; switching circuits; DC/DC power conversion; buck-boost power converter; core loss; inductor loss; measurement error; online B-H curve tracer; phase shift error; switching duty cycle; switching power converter topologies; Circuits; Core loss; Eddy currents; Electric variables measurement; Inductors; Magnetic cores; Magnetic flux; Magnetic flux density; Magnetic losses; Switching frequency;
Conference_Titel :
Applied Power Electronics Conference and Exposition, 2000. APEC 2000. Fifteenth Annual IEEE
Conference_Location :
New Orleans, LA
Print_ISBN :
0-7803-5864-3
DOI :
10.1109/APEC.2000.822572
