9 April 2013 Understanding efficiency limits of dielectric elastomer driver circuitry
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Abstract
Dielectric elastomers (DEs) can theoretically operate at efficiencies greater than that of electromagnetics. This is due to their unique mode of operation which involves charging and discharging a capacitive load at a few kilovolts (typically 1kV-4kV). Efficient recovery of the electrical energy stored in the capacitance of the DE is essential in achieving favourable efficiencies as actuators or generators. This is not a trivial problem because the DE acts as a voltage source with a low capacity and a large output resistance. These properties are not ideal for a power source, and will reduce the performance of any power conditioning circuit utilizing inductors or transformers. This paper briefly explores how circuit parameters affect the performance of a simple inductor circuit used to transfer energy from a DE to another capacitor. These parameters must be taken into account when designing the driving circuitry to maximize performance.
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Ho Cheong Lo, Ho Cheong Lo, Emilio Calius, Emilio Calius, Iain Anderson, Iain Anderson, } "Understanding efficiency limits of dielectric elastomer driver circuitry", Proc. SPIE 8687, Electroactive Polymer Actuators and Devices (EAPAD) 2013, 86870E (9 April 2013); doi: 10.1117/12.2010336; https://doi.org/10.1117/12.2010336
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