Abstract

This study compares the total harmonic distortion for cascade H-bridge multilevel (CHBML) active front-end converter with low carrier ratio. The low carrier ratio is utilized to reduce the switching loss of active front-end converters. Furthermore, the low carrier ratio is discussed with 9th, 15th and 21st carrier ratio and difference modulation index. The performances of the CHBML active front-end converter with low carrier ratio are validated by simulation results.

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