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With the advancement of material science, various smart materials with intrinsic capacitive property are emerging. The high-voltage (HV) power electronics converters with bidirectional energy flow functionality for supplying the capacitive load are highly demanded. A switching cycle-based analytical model of an HV bidirectional converter driving capacitive load is beneficial in thoroughly understanding...
This paper presents the design of a low input (24 V) and variable high output voltage (0–2.5 kV) bidirectional dc-dc converter for driving a capacitive actuator. The topology is a digitally controlled bidirectional flyback converter with a variable frequency control. The objective is, to design the converter for efficiently charging and discharging the capacitive actuator from 0 V to 2.5 kV and vice...
As a new type of smart material, the Dielectric Electro Active Polymer (DEAP) is introduced in terms of configuration, working principle and potential applications. The design of an autonomous high voltage driving system for DEAP actuator is investigated. The system configuration and the design methodology of a high voltage converter are discussed in detail. Based on the heating valve application,...
DEAP (Dielectric Electro Active Polymer) is a new type of smart material. The tubular actuator based on DEAP material has various potential applications and is fundamentally a capacitive load. A high voltage bidirectional converter is required to provide power for the actuator. A bidirectional flyback based converter has been implemented. The parasitic elements have serious influence for the operation...
The Dielectric Electro Active Polymer (DEAP) material is a very thin (∼80 μm) silicone elastomer film with a compliant metallic electrode layer on both sides. The DEAP is fundamentally a capacitor that is capable of very high strain. The property that the polymer changes its shape, as a result of the electrostatic forces generated by an applied voltage, can be used in actuators, for instance to adapt...
This paper gives an overview of the high voltage amplifiers, which are used to drive capacitive actuators. The amplifiers for both piezoelectric and DEAP (dielectric electro-active polymer) actuator are discussed. The suitable topologies for driving capacitive actuators are illustrated in detail, including linear as well as switched mode amplifiers. In the past much attention has been paid on the...
DEAP (Dielectric Electro Active Polymer) actuator is essentially a capacitive load and can be applied in various actuation occasions. However, high voltage is needed to actuate it. In this paper, a high voltage bidirectional flyback converter with low input voltage is presented. The fundamental operating principle for both energy transfer process and energy recovery process is analyzed in detail....
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