TY - JOUR
T1 - Analytical current THD evaluation for threephase voltage source inverters
AU - Akhmetov, Zhansen
AU - Ruderman, Alex
N1 - Publisher Copyright:
© 2020 The Institution of Engineering and Technology.
Copyright:
Copyright 2020 Elsevier B.V., All rights reserved.
PY - 2020/5/6
Y1 - 2020/5/6
N2 - 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.
AB - 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.
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U2 - 10.1049/iet-pel.2019.1257
DO - 10.1049/iet-pel.2019.1257
M3 - Article
AN - SCOPUS:85083999807
VL - 13
SP - 1286
EP - 1289
JO - IET Power Electronics
JF - IET Power Electronics
SN - 1755-4535
IS - 6
ER -