Modified sine pulse width modulation strategy for three level T-type inverter to reduce total harmonic distortion
Corressponding author's email:
tridd@hcmute.edu.vnDOI:
https://doi.org/10.54644/jte.64.2021.90Keywords:
Multilevel inverter, Z Source, Quasi Switch Boost, T-Type inverter, total harmonic distortionAbstract
In this paper, a modified sine pulse-width modulation (MSPWM) scheme for the three-level quasi-switched boost T-type inverter (TL-qSBT2I) to reduce total harmonic distortion (THD) as well as high modulation index are presented. The Up shoot through (UST) and Low shoot through (LST) states are proposed to control. The modified sine pulse-width modulation (MSPWM) scheme not only boost but also improve output voltage quality as compared to the conventional sine pulse-width modulation method. in addition, to reducing the current ripple of inductor input by using two high-frequency carrier vcar1 and vcar2, where vcar2 is generated by shifting vcar1 through 90°. To verify the operating principle of the TL-qSBT2I, simulation results have presented in this paper.
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