With the remaining set of magnets, of which each magnet was accurately characterized, the clever motor designers of the Innoptus Solar Team optimized the magnet layout for their two rotors, distributing any remaining differences in the magnets throughout the rotors, to ensure a maximally uniform magnetic field distribution. Using ingenious techniques, the magnets were then assembled into the rotors. After assembly, Magcam’s Combi Scanner was once again in action to measure fast, high resolution magnetic field distribution maps of the rotors.
The magnetic measurements were preceded by a laser surface mapping using the scanner's integrated high accuracy laser sensor. These measurements reveal the mechanical (axial) height distribution of the magnets along the rotor periphery, which can have effects on the resulting magnetic field distribution.
The resulting magnetic field maps were analyzed using Magcam’s sophisticated algorithms in order to unveil magnetic rotor parameters including pole angle consistency, pole strength uniformity, field gradient variations and north/south symmetry. These parameters are known to correlate with functional motor parameters such as cogging torque, torque ripple and efficiency.
"Thanks to the magnet preselection and rotor optimization by Magcam, we were able to maximize the efficiency of our motor, giving us a clear competitive edge in the race," says Stan Kelchtermans, who designed and constructed the innovative motor.