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Abstract

In recent years, the quasi -switched boost inverter uses widely in electrical systems. This paper proposes a method to control the AC output voltage and reduce the current ripple of the booster inductor in the quasi-switched boost inverter (QSBI). The proposed technique base on carrier pulse width modulation with two triangles with phase shifts 90◦. This technique uses the offset function to expand the modulation index and the algorithm for output voltage stabilization based on the adjustment of the boost ratio. The modulation index expansion will reduce the stress voltage on the switches by an average of 16.5% under the simulated conditions. The boost factor base on the short circuit time on the DC / DC booster and the inverter on the zero vectors. So, the duty ratio (of the boost DC / DC) can reduce by the short-circuit pulses that insert in the position of zero vectors, so the inverter is responsible for both boosting and inverting. The combination helps to reduce the current ripple on the boost inductor. Besides that, reducing the short-circuit ratio of DC / DC booster will also reduce the capacity of the booster switch and thereby reduce the production cost. The analysis clarifies the proposed technique. Simulations and experiments evaluate the proposed method.



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Article Details

Issue: Vol 4 No 2 (2021): Issue 2, Vol 4: Under Publishing
Page No.: 999-1008
Published: Jun 3, 2021
Section: Research article
DOI: https://doi.org/10.32508/stdjet.v4i2.808

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Creative Commons License

Copyright: The Authors. This is an open access article distributed under the terms of the Creative Commons Attribution License CC-BY 4.0., which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

 How to Cite
Le, X.-V., Nguyen, D.-M., Truong, V.-A., & Quach, T.-H. (2021). Algorithim to control output voltage and reduce the ripple of input current in quasi switched boost inverter. Science & Technology Development Journal - Engineering and Technology, 4(2), 999-1008. https://doi.org/https://doi.org/10.32508/stdjet.v4i2.808

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