Small-signal modeling and active damping of resonant electromagnetic levitation melting system with experimental verification

It is well-known that levitation melting type induction heating system, fed by resonant inverter, is a complex and nonlinear dynamical system, in which high-frequency electrical-side dynamics and low-frequency mechanical side dynamics are strongly coupled. Such systems are typically operated at resonant electrical frequency in order to both stabilize the open-loop dynamics and maximize the power transfer. While stable, resulting open-loop...