空间电推进系统电源处理单元技术发展综述

电推进技术作为目前航天器的一种先进推进技术,已逐步广泛用于各类航天器,电源处理单元(PPU)作为系统供配电的核心关键设备之一,其技术发展对电推进技术的可靠应用具有重要作用。为给推进系统设计者以及PPU研究人员提供更加全面的技术发展信息,文中综述了电推进PPU产品的国内外发展与研究现状,针对霍尔推力器和离子推力器的多种供配电技术方案在实际应用中的通用性与局限性进行了对比分析,同时,结合我国电推进系统PPU的应用背景,介绍了目前PPU技术发展面临的高效率功率变换、高压绝缘防护、高功率密度小型化等问题的解决途径,最后,讨论了PPU技术发展的挑战与趋势。

Review of Development of Power Processing Unit Technology for Aerospace Electric Propulsion System

Electric propulsion technology as an advanced propulsion technology of the current spacecraft, has been gradually widely used in various types of spacecraft, power processing unit (PPU) as one of the core key equipment of system power supply and distribution, its technological development has an important role in the reliable application of electric propulsion technology. In order to provide more comprehensive technical development information to propulsion system designers and PPU researchers, the paper summarizes the development and research status of electric propulsion PPU products at home and abroad, compares and analyzes the versatility and limitations of various power supply and distribution technology schemes of Hall thrusters and ion thrusters in practical applications, and at the same time, combined with the application background of PPU of China"s electric propulsion system, introduces the high voltage protection and high efficiency power changes faced by the current development of PPU technology. Finally, the challenges and trends of PPU technology development are discussed.