电磁耦合式无线能量传输技术在空间大功率导电旋转关节的应用

摘要

In the Integrated Space Solar Power Station ( SSPS) with huge sun-oriented solar arrays, Space rotary power transmission joint is a very important component of transmission system used to feed the DC power form the solar arrays to microwave antenna arrays. Presently, power transmission across the rotary power transmission joint is mainly achieved by brushes sliding on slip rings. The brush wear limits the operational life while the debris can result in voltage breakdown in the slip ring. Magnetically-coupled wireless power transmission technology can be a good alternative to slip rings for signal and power transfer. On the basis of analyzing the Rotary Power Transmission Joint by using contact power transmission, the paper proposes an approach of magnetically-coupled rotary power transmission joint for SSPS. The results shows that ap-proach can satisfy the needs of high transmission efficiency, long life and high reliability of SSPS. The power requirements for future spacecraft indicate that magnetically-coupled wireless power transmission technology might be feasible.%空间大功率导电旋转关节是平台式空间太阳能电站中的关键部件，用于实现电池阵对天线阵的电力传输以及对日跟踪功能。传统的接触式导电旋转关节采用电刷滑环的方式进行功率传输，存在机械磨损以及容易导致空间放电等问题；磁耦合式无线能量传输技术是一个代替传统滑环式输电方式的很好选择。文章在现有空间导电关节技术分析的基础上，提出了一种基于电磁耦合式空间大功率导电关节的方案并进行了初步的设计，该方案可以满足空间太阳能电站的长寿命和高可靠性的需求，可作为未来空间大功率电力传输技术的新方向。