Analysis of Shaped Pulse Transitions in Power Electronic Switching Waveforms for Reduced EMI Generation

  title={Analysis of Shaped Pulse Transitions in Power Electronic Switching Waveforms for Reduced EMI Generation},
  author={Niall Oswald and B. H. Stark and Derrick Holliday and Christina D. Hargis and Ben Drury},
  journal={IEEE Transactions on Industry Applications},
Consideration of the higher order time derivatives of voltage and current transitions in power semiconductor devices enables the specification of “S-shaped” switching waveforms which offer an improved tradeoff between high-frequency EMI generation and switching losses. In comparison with the widely used first-order derivative trapezoidal switching waveform approximation, Fourier analysis of the proposed “S-shaped” waveform shows that it exhibits a 20 dB/dec steeper spectral gradient at high… CONTINUE READING
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