Backstepping control of three-phase three-level four-leg shunt active power filter

Badra, Mehdi; Barkat, Said; Bouzidi, Mansour

doi:10.4314/jfas.v9i1.18

Cited by 9 publications

(2 citation statements)

References 28 publications

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“…The 4L-VSI is typically linked with an inductive filter in grid-tied systems, facilitating controlled current injection into the grid. Additionally, the 4L-VSI has seen wide-ranging applications in various grid-connected scenarios, such as shunt active power filters [13] and distributed static compensators (DSTATCOM) [14]. For stand-alone applications like an uninterruptible power supply [15] and electric motor drives [16], the 4L-VSI, equipped with an LC filter, maintains regulated operation.…”

Section: Introductionmentioning

confidence: 99%

Optimized Modulation Scheme for Four-Leg Quasi Z-Source Inverter: Reducing Power Loss and Improving Output Quality

Abid¹,

Bakeer

Albalawi

et al. 2023

IEEE Access

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This study introduces a new three-dimensional space vector modulation technique for a fourleg quasi Z-source inverter (4L-qZSI) integrating a qZSN and a two-level four-leg inverter. The proposed method encompasses three variants, namely 3DZSVM2, 3DZSVM4, and 3DZSVM8, designed to enhance steady-state operations and harmonic distortions for 4L-qZSI. One of the main contributions of this research is the establishment of a new modulation technique for the 4L-qZSI. The proposed method amalgamates the benefits of SVMs in both abc and αβγ coordinates. The design processes of the 3DZSVM algorithm are carried out in the newly proposed ρστ coordinates, while the space vector diagram (SVD) of the 4L-qZSI is utilized in the αβγ location. The proposed algorithm is applied in a single sector, optimizing time interval calculations and pulse creation without requiring trigonometric functions. Extensive simulation studies were conducted to validate the performance of the introduced modulation scheme for the 4L-qZSI. The simulation results show excellent steady-state performance and benefit over the conventional space vector modulation with zero sequences (CZPWM), including a power loss reduction of 50% and a 50% decrease in the THD of the output voltage. In addition, applying this technique results in enhanced output current quality, reduced power loss by 40%, and decreased inductive current ripple by 50% under unbalanced load conditions. Furthermore, the proposed 3DZSVM control strategy for 4L-qZSI is experimentally verified using the TMS320F28379D kit based on the Hardware-in-the-Loop (HIL) simulator. This demonstrates the practicality and effective performance of the suggested control strategy under unbalanced load conditions.

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Section: Introductionmentioning

confidence: 99%

Optimized Modulation Scheme for Four-Leg Quasi Z-Source Inverter: Reducing Power Loss and Improving Output Quality

Abid¹,

Bakeer

Albalawi

et al. 2023

IEEE Access

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“…In order to further improve transient and steady-state control performance and provide high robustness to parameter variations in three-phase, grid-connected four-leg PWM converters, numerous control approaches based on the VOC method have been suggested in recent years. These techniques include sliding mode control (SMC) [18], [19], fuzzy logic control (FLC) [20], and backstepping control (NBSC) [5], [21], [22].…”

Section: Introductionmentioning

confidence: 99%

Combined voltage oriented control and direct power control based on backstepping control for four-leg PWM rectifier under unbalanced conditions

Chebabhi¹,

Barkat²,

Kessal³

2022

Eng. rev. (Online)

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The present paper proposes a combined voltage-oriented control and direct power control (VOC-DPC) method associated with the backstepping control technique for a three-phase four-wire grid-connected four-leg rectifier in the synchronous rotating frame without using phase locked loop (PLL) and Parks transformation under balanced and unbalanced load and grid conditions. This control method is proposed in order to remove the drawbacks of the conventional VOC based on the PLL technique .The proposed control method is able to enhance the control performance and dynamic responses of the system when considering slow dynamics and instability issues of the PLL in several cases and can decrease the computational burden due to the absence of PLL and Park transformation. In addition, the performance of the proposed VOC-DPC method is enhanced by using backstepping control (BSC) based on Lyabonov theory for both the input currents and DC-bus voltage loops. As a consequence, constant DC-bus voltage, unit power factor, sinusoidal input currents, and neutral current minimization can be accurately carried out under both DC-bus voltage and load variations. Furthermore, robustness against filter inductance variations can also be achieved. The effectiveness, superiority, and performance of the proposed control method for a four-leg rectifier based on BSC in the dq0-frame are validated by several processor-in-the-loop (PIL) co-simulation tests sing the STM32F407 discovery development board.

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Backstepping control of a grid-connected four-leg PWM rectifier under both balanced and unbalanced grid conditions

Chebabhi¹,

Al-Dwa²,

Barkat³

et al. 2022

Int J Syst Assur Eng Manag

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Backstepping control of three-phase three-level four-leg shunt active power filter

Cited by 9 publications

References 28 publications

Optimized Modulation Scheme for Four-Leg Quasi Z-Source Inverter: Reducing Power Loss and Improving Output Quality

Optimized Modulation Scheme for Four-Leg Quasi Z-Source Inverter: Reducing Power Loss and Improving Output Quality

Combined voltage oriented control and direct power control based on backstepping control for four-leg PWM rectifier under unbalanced conditions

Backstepping control of a grid-connected four-leg PWM rectifier under both balanced and unbalanced grid conditions

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