Analysis of radiated emission for induction cook top and implementing the mitigating technology

Abstract

In this research proposal the Radiated emission from induction cook top has been tested. The mitigating technique to reduce the radiation has been implemented. During the research work, a number of home appliances were studied and it was found that EMI is one of the major problems. Home appliances like, mixer, Fridge, Microwave Oven, and Induction Cook Top emit Radiated Emissions. When such equipments are placed in close proximity of other equipments, they affect the functional working of other equipments. Therefore it is essential to study the level of radiation emitted by the equipment and subsequently implementing the mitigation technique for the same. For analysis of the Radiated Emission, we have taken “Prestige” make Pic 3.0V2 2000 Watt Induction Cook Top as a model. It operates on 230V AC, 50Hz. The Induction Cook Top is a modern gadget for healthy and safe cooking. It's special anti-magnetic wall ensures efficient cooking. Radiated Emission testing for this model has been performed in CETE (Center for Electronics Test Engineering) lab, Pune, India. During the test, the Induction Cook Top was placed in GTEM cell in CETE lab and Radiated Emission readings were taken in three axes without and with AL Enclosure for Induction Cook Top. Radiated Emission testing is carried over the frequency range from 9KHz to 18GHz for CISPR and EN standards. The QP (Quadratic Peak) level for CISPR standard is 30dB. CISPR standard describes two types of limits, which basically depends on the environment in which instrument is going to operate. Class B standard is suitable for the domestic appliances.