Suppression of Radiated Emissions from Inductive-Resonant Wireless Power Transfer Systems by Using Spread-Spectrum Technique
Electronics 2022
Deniss Stepins, Jānis Zaķis, Padmapriya Padmanaban, Dhruv Shah

Inductive-resonant wireless power transfer systems are often used for wireless transfer of electric power. However, they are significant sources of radiated electromagnetic emissions. The effect of spread-spectrum approach based on classical switching frequency modulation of inductive-resonant wireless power transfer system inverter operating frequency and multi-frequency technique on the radiated emissions and efficiency is studied experimentally in detail. The influence of the classical frequency modulation and multi-frequency technique parameters on the peak radiated emission levels and the efficiency of the inductive-resonant wireless power transfer system are investigated more comprehensively. It is shown in the paper that the spread-spectrum approaches can lead to an appreciable radiated emissions reduction with small or large impact on the system’s efficiency. Some useful recommendations on how to choose parameters of the periodic switching frequency modulation or the multi-frequency technique considering a trade-off between the radiated emissions reduction and the efficiency are also proposed.


Atslēgas vārdi
wireless power transfer; inductive-resonant; spread spectrum; frequency modulation; radiated emissions
DOI
10.3390/electronics11050730
Hipersaite
https://www.mdpi.com/2079-9292/11/5/730

Stepins, D., Zaķis, J., Padmanaban, P., Shah, D. Suppression of Radiated Emissions from Inductive-Resonant Wireless Power Transfer Systems by Using Spread-Spectrum Technique. Electronics, 2022, Vol. 11, No. 5, Article number 730. e-ISSN 2079-9292. Available from: doi:10.3390/electronics11050730

Publikācijas valoda
English (en)
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