Conference paper
Efficiency of Capacitively Loaded Converters
This paper explores the characteristic of capacitance versus voltage for dielectric electro active polymer (DEAP) actuator, 2kV polypropylene film capacitor as well as 3kV X7R multi layer ceramic capacitor (MLCC) at the beginning. An energy efficiency for capacitively loaded converters is introduced as a definition of efficiency.
The calculated and measured efficiency curves for charging DEAP actuator, polypropylene film capacitor and X7R MLCC are provided and compared. The attention has to be paid for the voltage dependent capacitive load, like X7R MLCC, when evaluating the charging efficiency of converter. Based on the capacitancevoltage curve, the correct capacitance should be chosen when calculating the stored energy; otherwise misleading optimistic efficiency can always be obtained.
Actually, when DEAP actuator is not available at the early developing stage, the voltage independent polypropylene film capacitor can be the equivalent capacitive load. Because of the voltage dependent characteristic, X7R MLCC cannot be used to replace the DEAP actuator. However, this type of capacitor can be used to substitute the capacitive actuator with voltage dependent property at the development phase.
Language: | English |
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Publisher: | IEEE |
Year: | 2012 |
Pages: | 368-373 |
Proceedings: | 38th Annual Conference of the IEEE Industrial Electronics Society |
ISBN: | 1467324191 , 1467324205 , 1467324213 , 9781467324199 , 9781467324205 and 9781467324212 |
ISSN: | 1553572x |
Types: | Conference paper |
DOI: | 10.1109/IECON.2012.6388791 |
ORCIDs: | Andersen, Michael A. E. |
Capacitance voltage characteristic DEAP actuator Energy efficiency SDG 7 - Affordable and Clean Energy Voltage dependent capacitor Voltage independent capacitor
MLCC X7R multi layer ceramic capacitor capacitance voltage characteristic capacitance-voltage curve measurement capacitively loaded converter ceramic capacitors charging DEAP actuator charging efficiency evaluation dielectric electroactive polymer actuator electroactive polymer actuators energy efficiency polymer films polypropylene film capacitor power convertors thin film capacitors voltage 2 kV voltage 3 kV voltage dependent capacitive load actuator voltage dependent capacitor voltage independent capacitor