Wide range operation by low-voltage inverter-fed MATRIX motor with single-layer distributed winding for automobile traction motor

This research proposes a novel low-voltage inverter-fed motor drive with variable characteristics achieved through the individual winding current control for the automobile traction motor. The independent armature winding with low-voltage inverters can improve the total efficiency by reducing the converter losses. Furthermore, the motor can expand the operating range since the inverters are able to change their connections to different coils groups of the armature winding. In this paper, the down size model was designed to verify the principle. It was confirmed that the principle model can extend the operating range and can expand the high efficiency area by FEA and experimental results.