Design of Induction Cooker Temperature Stabilizer Using Pulse Width Modulation
Induction heating is a system that has long been used in industries that require metal materials in their production. Previously, induction heating still used a simple system and had quite large dimensions. With the development of advances in power electronics technology, induction heaters can be simplified into small sizes. Even today the use of induction heaters has shifted to conventional needs that can be used at home or daily activities. Unlike other types of stoves that use gas, the heat generated on an induction cooker occurs directly in the pot or cooking medium. For this reason, kitchen utensils must be made of ferromagnetic metal. On an induction cooker, under the pot is placed a coil (coil) of copper. Alternating current (AC) flowing through the coil causes an alternating magnetic field (magnetic flux). The magnetic flux will be induced into the cookware above it. In cookware made of ferromagnetic metal, eddy currents occur which can heat food without causing a fire. This research discusses the design of an induction cooker that can stabilize temperature automatically through programming. The results of the research show that the duty cycle will be zero if it reaches the desired temperature set point. In addition, the higher the duty cycle value used, the higher the current flowing, thus increasing the heating speed. The results of the research are that by utilizing the duty cycle value, a temperature stabilizer using PWM on an induction cooker can be made. This can be proven by the various duty cycle values that are set.
Keywords: Cooker induction, IoT, Ferromagnetic, Eddy currents, PWM
