Technology for power processing unit used in high power electric propulsion
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摘要: 电推进作为一种先进的推进技术,其发射质量轻、比冲高,可以降低发射成本。高压电源是电源处理单元(PPU)的主要功率来源,是大功率、高效PPU设计的重点。新型电力电子技术的应用,将对未来地球同步轨道(GEO)通信卫星和深空探测的发展产生重要影响。本文以5kW等级PPU为研究对象,主要介绍大功率电推进技术的现状与发展,从电力电子的拓扑、器件和控制方法3个角度分析了大功率、高效PPU技术发展的特点与前景,为中国研制大功率PPU高压电源提供参考。
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关键词:
- 航天器 /
- 电推进 /
- 电源处理单元(PPU) /
- 高压电源 /
- 软开关
Abstract: Higher requirements are proposed to propulsion for space technology in new environment. As an advanced propulsion technology, electric propulsion has the virtue of high specific impulse, low launching mass and low cost. High voltage power supply is the key technology for high power and high efficiency design, since it is the main power supply for power processing unit (PPU).Application of novel power electronics technology will have a deep effect on geosynchronous orbit,geostationary earth orbit (GEO) telecommunication satellite and deep explanation. This paper focuses on PPU of 5 kW and introduces the current status and development of large power electric propulsion. The characteristics and prospects of large power and high efficiency PPU are analyzed in detail from three aspects of power electronic topology, components and control strategy. It supplies a reference for developing Chinese high voltage power supply of large power PPU. -
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