Analytical current THD evaluation for threephase voltage source inverters

Zhansen Akhmetov; Alex Ruderman

doi:10.1049/iet-pel.2019.1257

Analytical current THD evaluation for threephase voltage source inverters

Zhansen Akhmetov, Alex Ruderman

Department of Electrical and Computer Engineering

Research output: Contribution to journal › Article

Abstract

This study addresses the calculation of current total harmonic distortion (THD) for three-phase (3P) pulse-width modulation (PWM) inverters. First, it demonstrates how an analytical approach to PWM current ripple normalised mean square (NMS) calculation introduced in the late 1980s for a two-level (2L) inverter can be used for current THD evaluation. Second, it is shown how to evaluate current THD for a three-level (3L) 3P inverter using the current ripple NMS concept. Though considered is a 3P cascaded inverter with one H-bridge per phase, the results are applicable to popular 3L neutral point clamped (T-type) and flying capacitor inverters.

Original language	English
Pages (from-to)	1286-1289
Number of pages	4
Journal	IET Power Electronics
Volume	13
Issue number	6
DOIs	https://doi.org/10.1049/iet-pel.2019.1257
Publication status	Published - May 6 2020

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ASJC Scopus subject areas

Electrical and Electronic Engineering

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Akhmetov, Z., & Ruderman, A. (2020). Analytical current THD evaluation for threephase voltage source inverters. IET Power Electronics, 13(6), 1286-1289. https://doi.org/10.1049/iet-pel.2019.1257

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10.1049/iet-pel.2019.1257