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Proceedings Paper

Comparison of bidirectional power electronics with unidirectional topologies using active discharging circuits for feeding DEAP transducer
Author(s): Thorben Hoffstadt; Jürgen Maas
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Paper Abstract

To enable a continuous operation of a DEAP transducer, the feeding power electronics must provide the capability to charge and discharge the transducer to enable a continuous voltage adjustment. While in case of energy harvesting applications a bidirectional power electronics is mandatory, for actuator applications also unidirectional power electronics with active discharging circuits can be used. Thus, in this contribution a bidirectional flyback-converter is compared to a unidirectional with different discharging circuits. For this purpose, the design of a resistive and an inductive-resistive discharging circuit is proposed, that are connected in parallel to the DEAP and activated when required. Modulation schemes for both discharging circuits are derived that enable a continuous voltage control. Based on realized prototypes of the investigated topologies the different converters are finally compared to each other.

Paper Details

Date Published: 1 April 2015
PDF: 11 pages
Proc. SPIE 9430, Electroactive Polymer Actuators and Devices (EAPAD) 2015, 943007 (1 April 2015); doi: 10.1117/12.2085120
Show Author Affiliations
Thorben Hoffstadt, Ostwestfalen-Lippe Univ. of Applied Sciences (Germany)
Jürgen Maas, Ostwestfalen-Lippe Univ. of Applied Sciences (Germany)

Published in SPIE Proceedings Vol. 9430:
Electroactive Polymer Actuators and Devices (EAPAD) 2015
Yoseph Bar-Cohen, Editor(s)

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