Real Time Implementation of Induction Heating Principle using Full Bridge Inverter

The paper proposes an Induction Heating Principle using Full Bridge Inverter where a Single phase full bridge inverter consists of one rectifier, one capacitor, four mosfets and at the load side one induction heating rod is connected. So by this when any ac supply is given to the input side, we will get the square wave at the output side[1][3]. In this concept the induction heating rod is heated up within a short period and the heating time of the induction heating rod is under control. The frequency which is used for programming is 50 Hz, 33.33 Hz and 66.66 Hz. When 45 volts input is applied then we get 68 volts at the output side. So in this project basically the heating time of the induction heating rod is controlled. Microcontroller 8051 is used. In that the port 3 is used as the input port while port 2 is used as the output port. In the input side three switches are used for three different frequencies 50 Hz, 33.33 Hz, 66.66 Hz[5]. These frequencies can be changed depending upon the requirement but according that the microcontroller code should be written. The output of this microcontroller is given to the driver circuit. And after that the output of driver circuit is given to the input of mosfets at the gate terminal. The simulation is done in Matlab. In this the Mosfets M1, M4 and M2, M3 work as a pair. The phase delay between these pairs is 90 degree. In simulation also we are getting the same output in the form of square wave. Matlab 7.1 is used as a simulation tool.