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This paper presents the design of a low-mass RF power inverter at moderate to high power levels (e.g., tens of watts and above) for weight critical applications such as CubeSat plasma thrusters. Our approach for mass reduction includes resonant switching operation at tens of MHz, and the 3-D printing of lightweight scaffolds that form air core inductors after plating with a thin layer of copper. Specifically,...
This paper demonstrates a two-stage implementation of a power factor preregulator design in which the energy buffer capacitor is placed at the output of the converter. In this implementation, a resonant LLC converter supplies power to a boost converter operating in continuous conduction mode. Here, a variable frequency (VFX) technique is used in the resonant LLC converter stage to achieve a lower...
Parasitic inductance cancellation is employed in order to operate a resonant power inverter at 27.12 MHz using a TO-220 through-hole package. A Cauer-type 1 LC network permits the coupling of inductors to achieve cancellation of multiple parasitic inductances and reduces semiconductor device stress in the same way as the Φ2 inverter topology. The elimination of parasitic inductances allows for system...
This paper presents the design of a low mass RF power inverter at moderate to high power levels (e.g. tens of watts and above) for weight critical applications such as cubesat plasma thrusters. Our approach for mass reduction includes resonant switching operation at tens of MHz, and the 3D printing of light-weight scaffolds that form air core inductors after plating with a thin layer of copper. Specifically,...
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