Dynamic model and compensation circuit for solar array characteristics

Voltage control in spacecraft power systems relies on switching converters to regulate solar panel power. Traditional power controller design neglects the dynamic characteristics of solar arrays, impacting robustness. Solar Array Simulators (SASs) mimic static characteristics but differ dynamically. This paper proposes an equivalent circuit to simulate dynamic characteristics, enhancing the design reliability of power control systems and a compensation circuit for SASs to improve verification accuracy. Test results comparing solar arrays and SAS frequency characteristics are presented, followed by the proposed circuit’s design and validation using experiments and simulations. Results confirm the effectiveness of the proposed approach in capturing dynamic characteristics, thereby enhancing the reliability of both power control system design and SAS verification.