Abstract
The present work deals with the design and performance analysis of high frequency resonant inverter based Induction Heating (IH) System employing Boost Power Factor Correction (PFC) technique to overcome the problems due to EMI and RFI. Most of the existing techniques use passive filters for harmonics attenuation that fails to meet the present day requirement because of drawbacks like considerably high THD, poor dynamic performance, etc. This paper presents a new control approach for boost PFC based on inner and outer loops to eliminate the problems due to harmonics in the IH system. The equivalent circuit parameter model of the IH system has been used to analyze the presence of harmonics and the incorporation of boost PFC at the input of the system shows its elimination as per the stringent EMI-RFI regulations. Moreover, attention has been paid off to the design algorithm of the boost PFC and a detailed mathematical analysis has been done to outline an approach for its parameter selection. A comparative analysis of the IH system with and without the incorporation of the boost PFC has been done in terms of the THD in the input current waveform. The findings of the present work show that the incorporation of Boost PFC eliminates the harmonics in the IH system in a better manner than the existing techniques. Doi: 10.28991/HIJ-2021-02-02-05 Full Text: PDF
Highlights
The Induction Heating is an efficient and precise method of material heating available in the industry today
The circuit is simulated by applying a boost Power Factor Correction (PFC) between the rectifier and induction heating equipment (IHE)
The design of the high frequency IHE without and with the use of boost PFC is analyzed in Figures 3 and 6 respectively
Summary
The Induction Heating is an efficient and precise method of material heating available in the industry today. There are great prospects of the growing use of IHE which are of high frequency in the upcoming days. This high frequency generates ample amount of harmonics which flow back to input and leads to deterioration of power standard. By using a modified boost PFC circuit, the difficulties caused by the harmonics can be reduced. They have great effect in attenuating the inverter harmonics that is probable if the load is nonlinear [10, 11]
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