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May 24, 2024Electric Power Components and Systems

Comprehensive Analysis of DC Link Capacitors Used in Cascaded H-Bridge Motor Driver

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Authors

AAAdil AlahmadFKFırat KaçarCUCengiz Polat Uzunoğlu

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Overview

Simulation and experimental analysis demonstrates lower switching stress and current harmonics in medium-voltage motor drivers, indicating improved drive reliability and efficiency.

Key Points

  • Optimal selection of dc-link capacitors eliminates device voltage stress and improves output waveform quality across medium-voltage cascaded h-bridge motor driver configurations.
  • MATLAB simulation of a 3.3-kV, 1000-horsepower drive evaluates root mean square currents, showing reduced total harmonic distortion across the seven-level converter stages.
  • Supports component protection by mitigating standard mode voltage effects on motor bearings while reducing switching devices stress and overall operational expenditures.

Cite This Study

Alahmad et al. (2024) studied this question.

synapsesocial.com/papers/68e6897cb6db643587611386https://doi.org/10.1080/15325008.2024.2357262
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