Digital control of a high-voltage (2.5 kV) bidirectional DC-DC converter for driving a dielectric electro active polymer (DEAP) based capacitive actuator

Prasanth Thummala, Zhe Zhang, Michael A. E. Andersen, Dragan Maksimovic

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Abstract

This paper presents a digital control technique toachieve valley switching in a bidirectional flyback converterused to drive a dielectric electro active polymer basedincremental actuator. The incremental actuator consists ofthree electrically isolated, mechanically connected capacitiveactuators. The incremental actuator requires three highvoltage (~2.5 kV) bidirectional DC-DC converters, toaccomplish the incremental motion by charging anddischarging the capacitive actuators. The bidirectional flybackconverter employs a digital controller to improve efficiencyand charge/discharge speed using the valley switchingtechnique during both charge and discharge processes, withoutthe need to sense signals on the output high-voltage side.Experimental results verifying the bidirectional operation of asingle high voltage flyback converter are presented, using afilm capacitor as the load. Energy efficiency measurements are provided.
Original languageEnglish
Title of host publicationProceedings of IEEE ECCE USA 2014
PublisherIEEE
Publication date2014
Pages3435-3442
ISBN (Print)978-1-4799-5776-7
DOIs
Publication statusPublished - 2014
EventIEEE Energy Conversion Congress and Exposition 2014: Your Bridge to a Clean and Sustainable Energy Future - David L. Lawrence Convention Center, Pittsburgh, PA, United States
Duration: 14 Sep 201418 Sep 2014

Conference

ConferenceIEEE Energy Conversion Congress and Exposition 2014
LocationDavid L. Lawrence Convention Center
Country/TerritoryUnited States
CityPittsburgh, PA
Period14/09/201418/09/2014

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