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Proceedings Paper

Bidirectional power electronics for driving dielectric elastomer transducers
Author(s): L. Eitzen; C. Graf; J. Maas
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Paper Abstract

The operation of Dielectric Elastomer Transducers typically requires high voltages in the kilovolt range and relatively low currents. Therefore, for driving Dielectric Elastomer Transducers a high voltage power electronics is necessary. For realization of energy efficient actuator and generator applications bidirectional switched-mode converter topologies should be used enabling a bidirectional energy transfer as well as a high efficiency. In this contribution a modular converter system consisting of several switched-mode converter modules featuring galvanic isolation is presented as a basic concept for realization of a high voltage power supply. Three converter topologies - bidirectional flyback, Dual Active Bridge and Isolated Bidirectional Full-Bridge converter - are investigated and suitable modulation schemes are presented, which are based on hysteretic current-mode control, enabling a high converter dynamic and limitation of the converter output current in order to prevent electrode damage. Simulation results for the proposed converter topologies are presented and experimental results for a single bidirectional flyback converter module are shown.

Paper Details

Date Published: 3 April 2012
PDF: 12 pages
Proc. SPIE 8340, Electroactive Polymer Actuators and Devices (EAPAD) 2012, 834018 (3 April 2012); doi: 10.1117/12.913272
Show Author Affiliations
L. Eitzen, Hochschule Ostwestfalen-Lippe Univ. of Applied Sciences (Germany)
C. Graf, Hochschule Ostwestfalen-Lippe Univ. of Applied Sciences (Germany)
J. Maas, Hochschule Ostwestfalen-Lippe Univ. of Applied Sciences (Germany)

Published in SPIE Proceedings Vol. 8340:
Electroactive Polymer Actuators and Devices (EAPAD) 2012
Yoseph Bar-Cohen, Editor(s)

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