A Novel Solid-State Thermal Management Architecture for Superconducting Motors via Spatiotemporal Pole-Pair Modulation

High-power-density HTS motors are severely lim ited by complex liquid-cooling systems. This paper proposes a cascaded “Onion Topology” stator and introduces a disruptive spatiotemporal pole-pair modulation strategy that creates a purely software-defined virtual thermal diode between layers. By precisely controlling phase delay ∆ϕ between independently modulated pole-pair numbers, a thermodynamic traveling wave enables unidirectional heat pumping from the deep-cryogenic core to ambient without any physical thermal switches. Theoret ical analysis and dual-objective FOC design show that thermal management can be fully converted into inverter timing code, providing an ultra-lightweight, fully solid-state solution for next generation hypercars, eVTOLs, and deep-space applications.