Innovative Motor and Generator Technologies

NuGen Mobility has demonstrated that their Axial Flux Permanent Magnet motors have high Torque and Power densities, while exhibiting very high efficiencies. In addition, techniques utilized to vary the Rotor-Stator air gap have demonstrated that these high efficiencies can be realized at multiple points in the application’s Power-Torque-Speed continuum. Applying this same technique to the generator role of our Axial Flux design, we propose to exploit this ability and provide the generator with multiple “High-efficiency” points of operation. NuGen proposes to demonstrate analytically that as an Integrated Starter-Generator (ISG), high efficiencies can result at low-speed, high torque for engine Start and also at high-speeds for its Generator role. We propose to use this opportunity to both conduct a detailed study of the applicability of this innovation to 50-100kW ISGs and evaluate the potential of axial flux permanent magnet motors as measured against other motor topologies, and demonstrate the technical feasibility and performance gains from the air gap variation at different operating modes.