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首页> 外文会议>Intersociety energy conversion engineering conference;IECEC >POWER PROCESSING UNIT OPTIONS FOR HIGH POWERED NUCLEAR ELECTRIC PROPULSION USING MPD THRUSTERS
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POWER PROCESSING UNIT OPTIONS FOR HIGH POWERED NUCLEAR ELECTRIC PROPULSION USING MPD THRUSTERS

机译：使用MPD推力器的大功率核电推进装置的功率处理单元选项

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An electric propulsion vehicle designed to transport cargo in support of a piloted expedition to Mars will require electrical power in the range of megawatts. This paper summarizes an evaluation of various megawatt-class power processing unit (PPU) design and technology options for high-power nuclear electric propulsion (NEP) vehicles using turboalternators and advanced magnetoplasmadynamic (MPD) thrusters. A baseline system uses a low-voltage turboalternator, rectifiers and thrusters. However, there are other options. Four such design and technology options with the potential of improving overall system efficiency and reducing cabling mass are analyzed.The first option uses high-voltage AC from a wye-connected turboalternator and a step-down transformer, the second option uses a six-phase star-connected turboalternator instead of the wye-connected alternator in the baseline configuration, the third option uses PPU rectifier electronics located near the thrusters with a remotely-located radiator, and the fourth option uses cryogenic power conversion electronics and cabling to reduce losses.It is found that the third option has the potential of providing maximum overall power conversion efficiency and reducing mass. Presently, the fourth option appears to have maximum complexity of design and implementation, is costly, and is somewhat uncertain even though it can be the most attractive option in the future.
机译：为了支持飞行员到火星而设计的用于运送货物的电动推进器将需要兆瓦级的电力。本文总结了对使用涡轮发电机和先进磁等离子体动力（MPD）推进器的大功率核动力推进（NEP）车辆的各种兆瓦级功率处理单元（PPU）设计和技术选择的评估。基准系统使用低压涡轮交流发电机，整流器和推进器。但是，还有其他选择。分析了四个这样的设计和技术选项，它们有可能提高整体系统效率并减少布线量。 第一种选择使用来自星形连接的涡轮发电机和降压变压器的高压交流电，第二种选择使用六相星形连接的涡轮交流发电机，而不是基线配置中的星形连接的交流发电机，第三种选择使用PPU整流器电子设备位于推进器附近，并带有位于远处的散热器，第四个选择是使用低温功率转换电子设备和电缆以减少损耗。 发现第三选择具有提供最大的整体功率转换效率并减小质量的潜力。当前，第四种选择似乎具有最大的设计和实施复杂性，价格昂贵，并且即使在将来可能是最有吸引力的选择也有些不确定。

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