Conductance Control for Electromagnetic-Compatible Induction Heating Appliances

The design requirements of induction hobs are strongly restricted by efficiency, heating performance, cost, the generation acoustic noise, and electromagnetic compatibility (EMC). These two latter topics, cost EMC, motivated research presented in this article. different levels at which equivalent load hob is excited generate a variation impedance throughout grid period even if all other parameters kept constant. This can cause nonsinusoidal consumption current goes against compliance with EMC standards. article proposes an online controller controls conductance seen inverter only modifying switching frequency bus period. greatly reduces harmonic distortion current, no matter what type vessel used. Moreover, it requires neither power-factor correction rectifiers nor any additional circuitry has faster dynamic response respect to traditional solutions used due its higher bandwidth.