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IMPROVED HARMONIC SPECTRUM AND REDUCED EMI IN BOOST CONVERTER BY USING THE RANDOM MODULATION
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| Author(s) |
F. Mihalic; T. Bezjak; M. Milanovic |
| Abstract |
Higher operating frequency and simpler drive requirements provide rising output
power from modern power electronics devices. Nevertheless, the switch-mode operation results
in Electromagnetic Interference (EMI) which is produced due to large di/dt and dv/dt. One
way to reduce the EMI is the use of classic and expensive input filters or include the active
filter into the power circuits. By using of randomized pulse width modulation (RPWM) the
EMI effect can be reduced and implementation of the proposed control scheme into the boost
converter improve the harmonic spectrum as well. Such approach enable to control the levels
of spectral lines in harmonics spectrum. Simulated and measured current spectrum withoutand
with used random modulation will be shown in this paper. Such random modulated boost
converter has improved harmonic spectrum and reduced EMI effect as well. |
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| Filename: | Unnamed file |
| Filesize: | 494.4 KB |
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| Type |
Members Only |
| Date |
Last modified 2016-03-16 by System |
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