Design and Analysis of Resonant Inverter-Based Induction Heating Equipment

摘要

We have seen that harmonics play a big drawback role in any electrical circuit. One of the major effects of harmonics in power system is the increase in distortion of input current in the system. The dominant harmonic decreases the reliability of the entire system and its elimination becomes necessary to make the IHE a worthy technology. A detailed analysis of the IHE technology with and without the filter circuit is discussed to highlight the amount of distortions present in the current waveform. The hysteresis controller technique is implemented for its easy control and faster response. In this paper, the calculation of THD with and without filter circuit is discussed which shows drastic change of distortion value from 28.76% to 12.47% in the input waveform and hence the use of shunt active power filter (SAPF) is justified. Only then the induction heating technique can replace the existing conventional heating systems in the industry and make this greener approach a successful one.