Design and Implementation of Web-Based Training Tool for a Single Switch Induction Cooking System Using PHP

摘要

All induction heating systems exploit the well-known electromagnetic induction prenomen: an AC current flowing through the heating coil generates a variable magnetic flux, thus causing eddy currents to occur in the load to be heated. Due to the Joule effect, the electrical energy caused by the induced current is convertered to heat. Induction heating is widely used in industry for melting, brazing and surface hardening applications. In recent years, with the availability of inexpensive transistor switches, it has become possible to apply for domestic cooking application as well. Fig. 1 shows the induction cooking's block diagram. Rectified main voltage ensures the required dc voltage for medium frequency pulsating inverter. Power dissipation in device during switching transition, harmonics and radio frequency interferences can be reduced by using resonant switch network. Generated medium frequency square wave voltage or current is filtered by LC resonant tank.