Recent Journals Publication
IEEE Transactions on Industrial Electronics ( Volume: 69, Issue: 8, Aug. 2022)
"Spread Spectrum Technique With Random-Linear Modulation for EMI Mitigation and Audible Noise Elimination in IH Appliances"
Publisher IEEE
All Authors Mina Kim ; Hwa-Pyeong Park ; Jee-Hoon Jung
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Abstract
In this letter, a random-linear modulated spread spectrum technique for the induction heating (IH) appliances is proposed.
The proposed method can effectively mitigate electromagnetic interference (EMI) emissions and can eliminate audible noises. Besides, it can suppress the total harmonic distortion (THD) compared with other modulations.
The proposed random-linear modulation is evaluated by using a 1.8-kW IH prototype system. Experimental results verify the performance of EMI mitigation, audible noise elimination, and low THD using the proposed random-linear modulation compared with those of the conventional periodic and random modulations.
Modulating waveforms of periodic, random, and random-linear modulations.
Simulated peak attenuation using alternative modulations: (a) Spectrum analysis results of three modulations, (b)–(d) Empirical simulation results of periodic modulation, random modulation, and random-linear modulation.
Steady-state operating waveforms of 1.8-kW IH prototype: (a) using periodic modulation, (b) using random modulation, (c) using random-linear modulation.
