Commercial Solar Electric Propulsion: A Roadmap for Exploration

Lord, Peter; Tilley, Scott; Baldwin, Jeff

doi:10.1109/aero47225.2020.9172330

2020 IEEE Aerospace Conference 2020

DOI: 10.1109/aero47225.2020.9172330

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Commercial Solar Electric Propulsion: A Roadmap for Exploration

Peter Lord

Scott Tilley

Jeff Baldwin

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Cited by 2 publications

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Space High-Voltage Power Module

Zhao

Jiang

et al. 2021

Front. Energy Res.

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With the rapid development of the world’s aerospace technologies, a high-power and high-reliability space high-voltage power supply is significantly required by new generation of applications, including high-power electric propulsion, space welding, deep space exploration, and space solar power stations. However, it is quite difficult for space power supplies to directly achieve high-voltage output from the bus, because of the harshness of the space environment and the performance limitations of existing aerospace-grade electronic components. This paper proposes a high-voltage power supply module design for space welding applications, which outputs 1 kV and 200 W when the input is 100 V. This paper also improves the efficiency of the high-voltage converter with a phase-shifted full-bridge series resonant circuit, then simulates the optimized power module and the electric field distribution of the high-voltage circuit board.

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Space High-Voltage Power Module

Zhao

Jiang

et al. 2021

Front. Energy Res.

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Exploration on the Possible Bump-on-Tail Instability in VASIMR

Jing,

Chang,

Yang

et al. 2024

Space Sci Technol

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The bump-on-tail (BOT) instability is generally caused by a beam of energetic particles existing in relatively cold background plasma. The employment of second-stage wave-driven module in the variable specific impulse magnetoplasma rocket (VASIMR) yields the production of energetic ions, which could drive the BOT instability. The present work explores this possibility for the first time via numerical simulations based on the experimental data on the VASIMR, i.e., referring to VX-50. It is found that the BOT instability does exist even in the plume region away from antenna. The results indicate that velocity space diffusion provides a stabilizing effect on the nonlinear evolution of waves, while dissipation in the bulk plasma essentially impedes it. To show the practical values implied by these computations, the influences of this BOT instability on the power coupling and thrust are investigated particularly. These findings are valuable for VASIMR, as well as other plasma thrusters that yield energetic particles inside relatively cold background plasma, to suppress BOT instability and thus increase the power coupling efficiency and thrust performance.

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Commercial Solar Electric Propulsion: A Roadmap for Exploration

Cited by 2 publications

References 15 publications

Space High-Voltage Power Module

Space High-Voltage Power Module

Exploration on the Possible Bump-on-Tail Instability in VASIMR

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