Optimal design of dynamo flux pump supply system for space application

This thesis explores the design, analysis, and optimization of a dynamo flux pump for aerospace applications, with a focus on powering high-temperature superconducting (HTS) coils in magnetoplasmadynamic thrusters (AF-MPD). Traditional power supply systems, which rely on copper coils and current leads, face significant limitations in weight, efficiency, and thermal losses, making them unsuitable for space applications. HTS materials represent a compelling alternative due to their ability to generate intense magnetic fields with reduced weight and energy dissipation. Additionally, integrating flux pumps into powering systems eliminates the need for current leads, further reducing the cooling requirements and overall system mass. The research combines theoretical analysis, numerical modeling, and practical design recommendations. Finite element method (FEM) simulations and equivalent circuit analysis are employed to evaluate the performance of a dynamo flux pump under varying conditions, focusing on key parameters such as open-circuit voltage, efficiency, and average losses. The study involves optimizing a dynamo flux pump to meet the strict weight and size constraints of space systems while energizing an HTS magnet with nominal currents of hundreds of Amperes. Sensitivity analyses highlight the impact of critical parameters such as airgap, HTS tape temperature, and permanent magnet dimensions on system performance. The results demonstrate the feasibility of flux pumps as lightweight and efficient powering solutions for HTS coils in space applications. The proposed design represents a step forward in replacing conventional current leads, reducing thermal losses, and advancing the development of compact and high-performance propulsion systems.