空间电源最大功率跟踪控制仿真分析  

Simulation and Analysis for MPPT-Based Spacecraft Power System

作　　者：赵敏[1,2] 王骞 李铁才 王子才[1] 

机构地区：[1]哈尔滨工业大学,黑龙江哈尔滨150001 [2]深圳航天科技创新研究院,广东深圳518057

出　　处：《计算机仿真》2016年第2期99-102,233,共5页Computer Simulation

基　　金：深圳市科技计划项目资助(JCYJ20140425113637530)

摘　　要：随着空间飞行器探测深度的推进,日照和温度变化范围变宽。为使太阳能帆板电源功率输出满足深空探测的需求,需利用最大功率跟踪技术,对空间电源太阳阵的工作点进行调整。但MPPT系统是通过修改MEA的参考基准实现最大功率跟踪,使母线电压跟随基准信号变化,传统的S3R架构控制方法,使最大功率跟踪和母线全调节控制难以融合在一起。为解决上述问题,给出了一种三域(SUN域、BCR域及BDR域)两模式(电流模式及电压模式)的控制方式,在实现MPPT的同时也可实现卫星电源母线的全调节。在使用电导增量法对空间电源中的MPPT变换器模块进行建模及仿真验证基础上,保证单体模型正确后,使用MPPT变换器模型搭建了全调节母线模型,通过仿真分析,验证了改进的MPPT全调节母线控制策略的可行性,为空间电源最大功率跟踪控制的硬件实现奠定了坚实的基础。As the spacecraft explores the space more and more deeply,sunlight and temperature variation range will be wider. To make the output power of solar panels to meet the demand of deep space exploration,the maximum power point tracking technology is needed to adjust the operation point of the solar array. Traditionally,MPPT is implemented with modifying the reference voltage of MEA,which can cause the bus voltage change with the reference voltage,so the MPPT and full-regulated bus can not be implemented both in one space power system. To solve these problems,three-domains（ SUN domain,BCR domain and BDR domain） with two-modes（ current-mode and voltage mode） control was proposed in the paper. With this control method,MPPT can be implemented together with full-regulated bus system. On the basis of modeling and simulation for MPPT converter with incremental conductance method,after ensuring the correctness of the single model,the full-regulated bus power system was set up with MPPT converter. With simulation analysis,the feasibility of control strategy for MPPT-based full-regulated bus power system was verified,which lays a solid foundation for the realization for MPPT-based full-regulated bus space power system in hardware implement.

关 键 词：最大功率跟踪 空间电源系统 全调节母线 建模 仿真 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]