System-level motor testbed to validate reduced-criticality magnets

(a) Hardware setup of the VESC-based motor testbed
(a) Hardware setup of the VESC-based motor testbed

CMI researchers at Ames National Laboratory conducted the research for this highlight

Innovation

  • Developed a high-performance motor testbed integrating VESC-based control for accurate parameter identification and active motor–generator coupling. 
  • Established a flexible platform capable of evaluating both commercial and CMI magnet-based motor topologies at power levels up to 10 kW.

Achievement

  • Successfully validated the VESC-based testbed, achieving stable 49.6 V/2A operation and precise tracking up to 17,000 ERPM under no-load conditions. 
  • Demonstrated high-fidelity control and confirmed readiness for system-level evaluation of less-critical magnet substitutes developed at CMI.

Significance and impact

  • Provides a standardized, application-relevant benchmark for evaluating reduced-REE magnet materials at the device level. 
  • Bridges the gap between materials development and system validation, accelerating adoption of CMI magnet technologies in high-power-density motors.

Hub Goal Addressed
Accelerated deployment of reduced-REE substitute magnets.

VESC Pronto (left) and VESC Duet (right) used for control and data acquisition.
(b) VESC Pronto (left) and VESC Duet (right) used for control and data acquisition.