Note: This content is accessible to all versions of every browser. However, this browser does not seem to support current Web standards, preventing the display of our site's design details.


An optimal modulation strategy for minimising the losses of isolated multisource DC-DC converters


C. Fischer, S. Mariéthoz, M. Morari

IEEE IECON, Industrial Electronics Conf., Montréal, QC, Canada, pp. 2162-2167

The paper investigates optimal modulation of isolated two-quadrant and multisource DC-DC converters. Due to their numerous degrees of freedom there are infinitely many possibilities to modulate the voltage patterns in order to achieve the desired power transfer. The objective of this work is to exploit this flexibility to derive a modulation strategy that minimises the system power losses. A systematic modelling and optimisation approach is proposed that allows to minimise the overall losses subject to constraints on particular devices. The obtained optimal modulation angles are stored in look-up tables. The impact of the transformer leakage inductance on the efficiency is investigated, which gives some indications on how to design the transformer. Effectiveness of the approach is demonstrated in simulation.


Type of Publication:


S. Mariéthoz

File Download:

Request a copy of this publication.
(Uses JavaScript)
% Autogenerated BibTeX entry
@InProceedings { FisMar:2012:IFA_4175,
    author={C. Fischer and S. Mari{\'e}thoz and M. Morari},
    title={{An optimal modulation strategy for minimising the losses of
	  isolated multisource DC-DC converters}},
    booktitle={IEEE IECON, Industrial Electronics Conf.},
    address={Montr{\'e}al, QC, Canada},
Permanent link