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EMI reduction in wireless power transfer system using spread spectrum frequency dithering
- Source :
- 2016 IEEE Wireless Power Transfer Conference (WPTC).
- Publication Year :
- 2016
- Publisher :
- IEEE, 2016.
-
Abstract
- This paper presents the use of spread spectrum technique to reduce electromagnetic interference caused by fast switching transitions of a resonant inverter and rectifier used for wireless power transfer (WPT) systems. We investigate the magnetic field emission from a series-resonant WPT system having the resonance frequency of 20 kHz in a frequency band from 9 kHz to 150 kHz. The averaging spectral estimate (Welch's Periodogram) of the simulated leakage magnetic field shows that a harmonic peak can be reduced up to 8.7 dB by dithering the switching frequency with a triangular modulation profile.
- Subjects :
- Physics
Frequency band
Acoustics
020208 electrical & electronic engineering
020206 networking & telecommunications
02 engineering and technology
Electromagnetic interference
Radio spectrum
Spread spectrum
0202 electrical engineering, electronic engineering, information engineering
Electronic engineering
Wireless power transfer
Frequency modulation
Resonant inverter
Electromagnetic pulse
Subjects
Details
- Database :
- OpenAIRE
- Journal :
- 2016 IEEE Wireless Power Transfer Conference (WPTC)
- Accession number :
- edsair.doi...........265c6c8a5c41048fecbd8dd5d515e347