Modelling and estimation of dc-dc converters relies on accurate understanding and characterization of inductor performance. Currently, most widely used approach for estimating inductor performance is estimating ac losses from Quality factor (Q) measurements. This approach, however, does not include all the loss mechanisms in the inductor such as core losses and anomalous losses etc. Hence, a different approach is required to accurately estimate the performance of the inductors. This particularly challenging for new inductor devices with smaller impedances and volumes.
The project will aim to investigate different approaches to characterizing inductor losses. Further, an analytical Steinmetz model will be extracted from the measured loss data. Finally, the Steinmetz models will be used to define a spice circuit to accurately represent the inductor performance.
This project will use equipment’s including network analysers and circuit simulation tools such as NL5 and Cadence. The project will include following tasks
- Literature review to identify the approaches which have already been proposed such as Q-factor measurements, buck converter evaluation.
- New approach to measurements of ac losses in inductors
- Modelling of measured loss data to Steinmetz model
- Deriving Spice circuit to represent inductor performance
Technology, Skills involved are:
dc-dc converters, Circuit analysis, device characterization, Microsoft excel
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