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 | |
| Publication status | Published - May 6 2020 |
ASJC Scopus subject areas
- Electrical and Electronic Engineering
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Cite this
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