Integrated magnetics, insulation, and cooling architecture for robust eVTOL motors

To address the NASA need for advanced technologies that will improve the safety and reliability of the electrical power system/powertrain of UAM vehicles, specifically advancements in thermal management technologies for electric motor systems, Hinetics proposes to develop a new Integrated Magnetics, Insulation and Cooling Architecture (MAGICA) that can help break the trade-off between power density and reliability, and obtain robust, high power motors that can be produced in high volume. This approach reduces electro-thermal stresses at the windings, which are traditionally viewed as the most vulnerable sub-system in motors for electric aircraft. The significantly improved dielectric protection extends the SOA on several fronts including thermal degradation, insulation quality, and partial discharge, preventing winding failure while retaining high power density and system-level benefits. The system offers enhanced electro-thermal performance with the unique infusion of cooling and magnetics, alleviating the iron yoke as a thermal bottleneck, reducing Delta;T between the heatsink and coils, and creating sufficient thermal headroom to enhance the coil insulation without degrading motor performance. Combined with modular manufacturing and pre-qualification of the coil assembly offering independent quality assurance, this provides a path to meet NASA requirements for high reliability and safety in cost-effective, mass production.In Phase I, Hinetics demonstrated the feasibility of MAGICA through a combination of computer modeling, design/analysis, and the fabrication and test of a laboratory prototype, reducing development risks for Phase II. MAGICA has now reached TRL 4; in Phase II, Hinetics will expand the capabilities of MAGICA with integration into two fully functional generators, achieving TRL 6 at the project#39;s conclusion. The demonstrated results will offer NASA and eVTOL OEMs the ability to extend motor/generator performance while prioritizing utmost reliability.