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Energies 2018, 11(11), 3073; https://doi.org/10.3390/en11113073

Voltage Balance Control Analysis of Three-Level Boost DC-DC Converters: Theoretical Analysis and DSP-Based Real Time Implementation

1
Laboratory of Electric Systems and Telecommunications, Cadi-Ayyad University, BP 549, Av Abdelkarim Elkhattabi, Gueliz, 4000 Marrakesh, Morocco
2
Laboratory of Innovative Technologies, University of Picardie Jules Verne, 80025 Amiens, France
*
Author to whom correspondence should be addressed.
Received: 28 September 2018 / Revised: 14 October 2018 / Accepted: 26 October 2018 / Published: 8 November 2018
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Abstract

In this paper, a step-by-step description to get a unique three-level boost DC–DC converter (TLBDC) (DC—direct current) small signal model is first presented and validated through simulations and experiments. This model allows for overcoming the usage of two sub-models as in the conventional modeling approach. Based on this model, voltage balance (VB) controllers are designed and VB control analysis is presented. Two VB controllers, namely Proportional Integral (PI) and Fuzzy, were analyzed when the VB control was applied on both TLBDC switches or only one. According to the obtained simulation and experimental results, the proposed model gives an accurate approximation in dynamic, small perturbations around an operating point and steady state modes. Moreover, it has been shown that VB is achieved in a reduced time when VB control is applied on both the TLBDC’s switches. Furthermore, the Fuzzy controller performs better than PI controller for VB control. View Full-Text
Keywords: three-level boost DC-DC converter; small signal modeling; voltage balance control three-level boost DC-DC converter; small signal modeling; voltage balance control
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Oulad-Abbou, D.; Doubabi, S.; Rachid, A. Voltage Balance Control Analysis of Three-Level Boost DC-DC Converters: Theoretical Analysis and DSP-Based Real Time Implementation. Energies 2018, 11, 3073.

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