宇航数字化、智能化电源技术研究

Research on aerospace digital and intelligent power supply technology

航天技术的快速发展与创新对宇航电源的功能提出了更高需求,需进一步拓展应用,为此提出了适应于未来的宇航数字化、智能化电源技术.通过分析宇航数字化、智能化电源在电推进系统中的复杂供电及控制要求,以及在中国超低轨小卫星中对μN级高精度控制、宽范围推力调节等方面的典型应用,分析研究了宇航数字化、智能化电源技术的主要技术途径和发展展望,给出了以现场可编程门阵列(Field Programmable Gate Array,FPGA)为核心控制芯片的模数转换器(Analog-to-Digital Converter,ADC)电路、数字脉冲宽度调制(Digital Pulse Width Modulation,DPWM)发生器及数字补偿器等数字化电源的设计要点,最终实现了电源输出电流毫安级的调节精度和超低轨小卫星微牛级的高精度控制要求.

Aerospace power supply is an important part of spacecraft,the functionality of which is demanded in higher-requirement and application expansibility with the rapid development and innovation of space technology.Therefore,the research was conducted to adapt with the future aerospace digital and intelligent power supply technology application.Based on the complex power supply and control requirements of aerospace digital power supply in electric propulsion systems,as well as its typical application in high-precision control and wide range thrust adjustment of micro-newton level small satellite in China,the main technical approaches and development prospects of aerospace digital and intelligent power supply technology were analyzed,which providing the design of digital power supplies such as analog to digital converter circuit,digital pulse width modulation generators and digital compensator with field programmable gate array as the core control chip.Finally,the adjustment accuracy of the power output current in milliampere level and the high-precision control requirements of the ultra-low orbit small satellite in micronewton level were achieved.