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Benchmark model for multi-orbital transient analysis of satellite electrical power subsystem

机译：卫星电力子系统多轨道瞬态分析的基准模型

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摘要

In this study, an efficient multi-orbital simulation model is presented for satellite Electrical Power Subsystem (EPS) which is integral to the success of the mission. The model integrates converter models, PV array model, DC bus model, and a numerical battery model according to a generalised EPS architecture to form one unified model of the entire EPS. The proposed model reduces simulation complexity, enhances speed, and enables multi-orbit analysis capability. Dynamic interaction among the elements is modelled through a coordinated control containing maximum power point tracking (MPPT), voltage regulation, battery charge/discharge control and management. Practical concerns of digital control implementation for PI controllers and MPPT are also incorporated in the model. Anti-windup is implemented to avoid latency in controller action after the eclipse. Additionally, a robust MPPT algorithm ensures fast immediate action after eclipse. Efficient component models and practical attention-to-detail enable the developed model to simulate multiple orbits with eclipse periods. The superior speed of the model, ability to simulate multiple orbits, and test different control strategies are demonstrated with a practical case study of Mysat-1, an imaging satellite launched by the Khalifa University. The model can be used as a proof-of-concept tool for predicting the operational behaviour of EPS during the development of a satellite.
机译：在这项研究中，为卫星电力子系统（EPS）提出了一种有效的多轨道仿真模型，该模型对于完成任务至关重要。该模型根据通用EPS架构集成了转换器模型，PV阵列模型，DC总线模型和数字电池模型，以形成整个EPS的统一模型。所提出的模型降低了仿真复杂性，提高了速度，并启用了多轨道分析功能。元素之间的动态交互是通过包含最大功率点跟踪（MPPT），电压调节，电池充电/放电控制和管理的协调控制来建模的。该模型还包含了PI控制器和MPPT的数字控制实现的实际问题。实施反饱和以避免在日食后控制器动作中出现延迟。此外，强大的MPPT算法可确保食后迅速采取行动。高效的组件模型和实际的关注细节使开发的模型能够模拟具有蚀周期的多个轨道。通过哈利法大学发射的成像卫星Mysat-1的实际案例研究，证明了该模型的卓越速度，模拟多个轨道的能力以及测试不同控制策略的能力。该模型可以用作概念验证工具，用于预测卫星开发过程中EPS的运行行为。

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