A low capacitance single-phase AC-DC converter with inherent power ripple decoupling

Gottardo, Davide, De Lillo, Liliana, Empringham, Lee and Costabeber, Alessando (2016) A low capacitance single-phase AC-DC converter with inherent power ripple decoupling. In: 42nd Annual Conference of IEEE Industrial Electronics Society (IECON 2016), 24-27 Oct 2016, Florence, Italy.

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This paper proposes a new single-phase AC-DC conversion topology with inherent power ripple decoupling, based on the combination of a PWM H-bridge inverter, an AC side LC filter and a ZVS line commutated H-bridge. A capacitor on the AC side is used as power decoupling element. By appropriate selection of the capacitor voltage, the power ripple at twice the AC frequency can be cancelled from the DC side instantaneous power, achieving negligible DC voltage ripple using a smaller total capacitance compared to traditional solutions.

Recently, several solutions using the concept of Ripple-Port have been proposed that reduce the overall capacitance. However, they usually need at least a dedicated PWM half-bridge leg, adding switching loss, and a separate LC tank. Instead, the proposed topology integrates the ripple compensation in the AC/DC conversion stage, exploiting the AC filter and minimising additional loss thanks to the ZVS of the additional H-bridge.

The concept of the steady state operation of the proposed converter is described analytically and validated in simulation using MATLAB Simulink and PLECS.

This work is being developed at University of Nottingham within the framework of project SENSIBLE.

Item Type: Conference or Workshop Item (Paper)
RIS ID: https://nottingham-repository.worktribe.com/output/821275
Additional Information: © 2016 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
Keywords: Capacitors, Bridge circuits, Pulse width modulation, Voltage control, Frequency conversion
Schools/Departments: University of Nottingham, UK > Faculty of Engineering > Department of Electrical and Electronic Engineering
Related URLs:
Depositing User: Burns, Rebecca
Date Deposited: 07 Feb 2017 15:20
Last Modified: 04 May 2020 18:15
URI: https://eprints.nottingham.ac.uk/id/eprint/40388

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