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Design and testing of Toroidal Coil for induction water heater

Abstract:

Based on the change of the productive and energetic matrix of Ecuador, that consist in the substitution of liquid gas coming from black oil for electricity to cook food and water heating for human use in residential areas, a prototype Toroidal Coil (TC) for a water heater Magnetic Induction (MI) is presented in this article. Its operation is rooted in an inverter DC-AC in Sinusoidal Pulse Width Modulation (SPWM) used for driving high frequency waves thru the winding of the coil, generating resistive losses transmitting heat to the hydraulic fluid the moment that this fluid gets in contact with the core coil the ferromagnetic implemented. This way it is insured the maximum heat transfer, showing that the magnetic fields generated by this prototype are within the standards issued by the ministry of environment regarding the levels of electromagnetic fields to which people is exposed in this case due to the fields produced by the TC.