Compensating baseband distortion of regularly sampled pulse-width modulators for high-precision power converters

Bas Vermulst

doi:10.1109/TPEL.2018.2874362

Compensating baseband distortion of regularly sampled pulse-width modulators for high-precision power converters

Bas Vermulst (Corresponding author)

Research output: Contribution to journal › Article › Academic › peer-review

10 Citations (Scopus)

14 Downloads (Pure)

Abstract

This paper presents a straight-forward method to compensate baseband distortion for regularly sampled pulsewidth modulation, for both sawtooth and triangular carrier, aimed at high-precision power electronics applications such as medical MRI and semiconductor lithography. The method adds correction signals to the modulator input to mitigate the distortion, which is computationally lightweight, and pseudo-code is given to simplify implementation. Measurements are conducted, which confirm the improvements offered by the method. It is shown that baseband distortion can be reduced by upto 60 dB. This improves the linearity and reduces audible noise of power converters.

Original language	English
Article number	8486735
Pages (from-to)	6257-6263
Number of pages	7
Journal	IEEE Transactions on Power Electronics
Volume	34
Issue number	7
DOIs	https://doi.org/10.1109/TPEL.2018.2874362
Publication status	Published - Jul 2019

Keywords

Baseband
Delays
Distortion
Harmonic analysis
Mathematical model
Pulse width modulation
Pulse width modulation converters
Nonlinear distortion
Power quality
Predistortion

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10.1109/TPEL.2018.2874362

Cite this

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abstract = "This paper presents a straight-forward method to compensate baseband distortion for regularly sampled pulsewidth modulation, for both sawtooth and triangular carrier, aimed at high-precision power electronics applications such as medical MRI and semiconductor lithography. The method adds correction signals to the modulator input to mitigate the distortion, which is computationally lightweight, and pseudo-code is given to simplify implementation. Measurements are conducted, which confirm the improvements offered by the method. It is shown that baseband distortion can be reduced by upto 60 dB. This improves the linearity and reduces audible noise of power converters.",

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AB - This paper presents a straight-forward method to compensate baseband distortion for regularly sampled pulsewidth modulation, for both sawtooth and triangular carrier, aimed at high-precision power electronics applications such as medical MRI and semiconductor lithography. The method adds correction signals to the modulator input to mitigate the distortion, which is computationally lightweight, and pseudo-code is given to simplify implementation. Measurements are conducted, which confirm the improvements offered by the method. It is shown that baseband distortion can be reduced by upto 60 dB. This improves the linearity and reduces audible noise of power converters.

KW - Baseband

KW - Delays

KW - Distortion

KW - Harmonic analysis

KW - Mathematical model

KW - Pulse width modulation

KW - Pulse width modulation converters

KW - Nonlinear distortion

KW - Power quality

KW - Predistortion

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JF - IEEE Transactions on Power Electronics

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Compensating baseband distortion of regularly sampled pulse-width modulators for high-precision power converters

Abstract

Keywords

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Baseband Distortion Compensation for High-Precision Power Electronics Using Regularly Sampled Pulse-Width Modulators with Sawtooth Carrier

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