Control of an Air-Cored Resonant Induction Motor

This paper investigates the closed-loop control of an Air-Cored Resonant Induction Motor. The idea is to always operate at resonance, which allows for a good efficiency while keeping the supply voltage low. This is achieved by interpreting the resonance condition as a relation giving the stator velocity as a function of the rotor velocity, and feeding it to a suitably modified version of (indirect) Field-Oriented Control.