Open AccessAnalytical current THD evaluation for three‐phase voltage source inverters
Author(s) -
Akhmetov Zhansen,
Ruderman Alex
Publication year - 2020
Publication title -
iet power electronics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.637
H-Index - 77
eISSN - 1755-4543
pISSN - 1755-4535
DOI - 10.1049/iet-pel.2019.1257
Subject(s) - total harmonic distortion , ripple , pulse width modulation , inverter , current (fluid) , control theory (sociology) , capacitor , voltage , three phase , harmonic , phase (matter) , computer science , topology (electrical circuits) , electronic engineering , electrical engineering , physics , engineering , acoustics , control (management) , quantum mechanics , artificial intelligence
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.