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.
|Title of host publication||Proceedings of IEEE ECCE USA 2014|
|Publication status||Published - 2014|
|Event||IEEE 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 2014 → 18 Sep 2014
|Conference||IEEE Energy Conversion Congress and Exposition 2014|
|Location||David L. Lawrence Convention Center|
|Period||14/09/2014 → 18/09/2014|