Advances in high precision amplifiers : the extra L opposed current converter

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In existing half/full-bridge high precision amplifiers output distortion is present due to the required switch blanking time. The OCC topology does not require this blanking time but has a much higher total inductor volume compared to the half-bridge. In this paper a patented new topology is introduced that has the advantages of the OCC but with a much lower total inductor volume. The basic operation and properties of the ELOCC topology are explained including an extended optimization of the total inductor volume and an average model for control design. A prototype ELOCC current amplifier has been developed. The behavior of this prototype is in good agreement with the obtained simulation results. Even though the prototype is not fully optimized the linearity compared to a full-bridge is already impressive.
Original languageEnglish
Pages (from-to)5691-5700
Number of pages10
JournalIEEE Transactions on Power Electronics
Issue number10
Publication statusPublished - 2015


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