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Discriminative acquisition of power IGBT low rate transients

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4 Author(s)
Ermel, V. ; Inst. for High Voltage Technol. & Electr. Power Syst., Tech. Univ. Braunschweig, Braunschweig, Germany ; Kurrat, M. ; Meisner, J. ; Kahmann, M.

The frequency spectrum of the power IGBT circuit originates mostly from high gradient switching and low rate conduction components. A chopper circuit is introduced for the acquisition of the IGBT low rate transients in the conductive stage of operation. A Zener discriminator enhances the measurement accurateness by two orders of magnitude. The experimental results are presented for a half-bridge converter. Measurement uncertainties are acquired with DC and impulse calibration apparatus.

Published in:

Applied Measurements for Power Systems (AMPS), 2012 IEEE International Workshop on

Date of Conference:

26-28 Sept. 2012

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