摘要
针对高轨大功率卫星的环境特点,对空间电源系统设计开展研究。高轨大功率卫星通常采用直接能量传输(DET)方式的电源系统,为保证卫星寿命末期电源系统的功率输出,通常把太阳电池方阵寿命末期的最大功率点设在母线电压附近,这就导致卫星寿命初期太阳能的利用率较低,提出了一种控制方法,保持DET电源系统的高传输效率优势的同时,采用分段固定电压最大功率跟踪(MPPT)技术,实现太阳电池方阵始终接近最大功率输出,从而寿命初期的能源利用率远高于其他形式的电源系统。
Based on the environmental characteristics of high-orbit power satellite, the space power system was researched. High-orbit power satellites usually adopt DET power transmission system. To ensure the output of power system at the end life of satellite, the end-life maximum power point of solar array usually locates near the bus voltage. This leads to lower solar energy utilization in initial-life of satellite. A control method was presented. While maintaining high-efficiency transmission advantages of DET power system, the segment fixed voltage MPPT technology was used to make solar array always close to the maximum power output, allowing the initial-life energy efficiency much higher than other power systems.
出处
《电源技术》
CAS
CSCD
北大核心
2016年第8期1675-1678,共4页
Chinese Journal of Power Sources
