AL-DWA Ala addin mohammed mohammed hussein
علاء الدين محمد محمد حسين الدوه
aldawah.alaa@univ-msila.dz
0555475079
- DEPARTEMENT OF: ELECTRICAL ENGINEERING
- Faculty of Technology
- Grade PHd
About Me
Science et Technologies
Filiere
Electromécanique
Electromechanics
Location
Msila, Msila
Msila, ALGERIA
Code RFIDE- 1994-05-10 00:00:00
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AL-DWA Ala addin mohammed mohammed hussein birthday
- 2024-07-19
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2024-07-19
Real-Time Implementation of a New Modified 3DSVPWM Control Method for Eliminating Zero-Sequence Circulating Current in Parallel Three-Phase Four-Leg Source Voltage Inverters
Due to its good reliability, high modularity, zero-sequence current (ZSC) path, and lower size and cost, the parallel four-leg source voltage inverter’s topology is a perfect choice for many power applications, including renewable power generation-based stand-alone power-supply systems (SAPSSs). However, the major concern associated with this topology is the presence of a zero-sequence circulating current (ZSCC) that circulates between the phase legs of these inverters when the inverters operate under unbalanced current sharing or unbalanced output-filter parameters, which leads to multiple consequences, including output current distortion, power losses, and system stability degradation, as well as impacting the efficiency, reliability, and operational lifespan of the system. The ZSCC model demonstrates that the ZSCC amplitude is linked to the filter inductance and difference between zero-sequence duty ratios or zero-sequence voltages (ZSVs). Considering these facts, we propose a new modified three-dimensional space vector pulse width modulation (3DSVPWM) methodology to suppress ZSCC and its effects on the current quality, efficiency, reliability, and operational lifespan of the parallel system. The suggested strategy aims to eliminate the difference between ZSVs by adjusting the zero-vector duty ratios in each switching period. This adjustment keeps the ZSCC constant at zero with minimal oscillations and switching losses, thereby improving the output current quality, particularly in mitigating the 3rd harmonic and its multiples, and enhancing the system’s efficiency, reliability, and operational lifespan. The proposed method offers the advantages of being suitable for suppressing both the ZSCC and ZSC and not impacting the control purposes or the system’s output quality. The efficiency and performance of the designed method are validated through various Hardware-in-the-loop (HIL) tests under different conditions using the OPAL-RT-OP5700 real-time simulator
Citation
AL-DWA Ala Addin Mohammed Mohammed Hussein , , (2024-07-19), Real-Time Implementation of a New Modified 3DSVPWM Control Method for Eliminating Zero-Sequence Circulating Current in Parallel Three-Phase Four-Leg Source Voltage Inverters, IEEE Access, Vol:12, Issue:, pages:101121 - 101138, IEEE
- 2023-07-03
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2023-07-03
NEW MODELING AND ENHANCED CONTROL STRATEGY FOR GRID-CONNECTED FOUR-LEG INVERTER WITHOUT PHASE-LOCKED LOOP AND PARK’S TRANSFORMATION
This paper proposes an enhanced voltage-oriented control strategy (EVOC) based on super twisting sliding mode control (STSMC) for a grid-connected four-leg source voltage inverter (GC-FLVSI) in the synchronous rotating frame (dq0–frame) without using a phase-locked loop (PLL) and Park's transformation. The proposed strategy is used not only to control the dq0–axes FLVSI inject currents but also to derive the mathematical model of the GC-FLVSI in the dq0–frame based on the direct instantaneous power control theory (DPC) and to eliminate the impact of PLL and Park's transformation. The principle of the proposed EVOC strategy is analyzed in detail. The STSMC is used for accurate dq0–axes FLVSI inject current control, and it can result in sinusoidal currents with high quality, high robustness against parametric variations, and low chattering with easy implementation. Finally, the superiority of the proposed EVOC-STSMC strategy in terms of complexity, response, steady-state errors, robustness, total harmonic distortion (THDs) mitigation, neutral current reduction, and robustness against parameter variations is verified through comparative analysis with the EVOC strategy based on the PI controller (EVOC-PIC).
Citation
ALI CHEBABHI , AL-DWA Ala Addin Mohammed Mohammed Hussein , MABROUK Defdaf , ADMIN Admin , ABDELHALIM KESSAL, , (2023-07-03), NEW MODELING AND ENHANCED CONTROL STRATEGY FOR GRID-CONNECTED FOUR-LEG INVERTER WITHOUT PHASE-LOCKED LOOP AND PARK’S TRANSFORMATION, Revue Roumaine des Sciences Techniques - Serie Électrotechnique et Énergétique, Vol:68, Issue:2, pages:1-6, ACADEMIEI ROMANE
- 2023-04-03
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2023-04-03
New Modeling and Improved Current Control Strategy to Eliminate the Impact of Synchronization Method and Parks Transformation for Grid-connected Four-leg PWM Inverter
The synchronization method’s ability is one of the fundamental guarantees for the stability and accuracy of injected current control for grid-connected converter-based distribution resources. These synchronization methods, such as phase locked loop (PLL), are generally based on Park transformation and grid voltage regulation, which may affect an unstable phenomenon under distortion and unbalanced grid voltage conditions and result in more computational complexity. In this present paper, analogous to the traditional voltage-oriented control strategy (VOC) in the synchronous rotating frame (dq0-frame) based on PLL and Parks transformation, an improved voltage-oriented control strategy (IVOC) without synchronization methods and Parks transformation is proposed for grid-connected four-leg inverters (GC-FLVSI) to achieve accurate current control with high-quality performance in the dq0-frame. This proposed strategy is not only used for controlling the GC-FLVSI but also to provide the module of GC-FLVSI in the dq0-frame based on the instantaneous active and reactive powers theory (DPC). The proposed IVOC strategy has the same properties and identical performance as the traditional VOC when the grid phase angle is correctly detected by any synchronization method, with the advantages of both traditional DPC and VOC at the same time. In order to validate the superiority and excellent dynamic and steady-state performances of the proposed IVOC strategy in comparison with the traditional VOC strategy, some simulation scenarios using MATLAB/Simulink under different operations and grid conditions have been performed and presented.
Citation
ALI CHEBABHI , AL-DWA Ala Addin Mohammed Mohammed Hussein , MABROUK Defdaf , Anwar Guessabi, , (2023-04-03), New Modeling and Improved Current Control Strategy to Eliminate the Impact of Synchronization Method and Parks Transformation for Grid-connected Four-leg PWM Inverter, Periodica Polytechnica Electrical Engineering and Computer Science, Vol:67, Issue:2, pages:204-215, Romanian Academy, Publishing House of the Romanian Academy
- 2023-04-01
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2023-04-01
PROPORTIONAL INTEGRAL QUASI RESONANT CONTROLLER FOR ZERO-SEQUENCE CIRCULATING CURRENT AND RIPPLES SUPPRESSION IN PARALLEL THREE-PHASE PWM RECTIFIERS
Parallel three-phase pulse with modulation (PWM) rectifiers with common sc and ac buses are widely used in power systems due to their many advantages such as flexibility, sinusoidal grid currents, lower switching frequency, and good reliability. However, this topology suffers from zero-sequence circulating current (ZSCC) generated by numerous reasons including filters inductors unbalanced, unequal dead time, and losses of synchronism between the control of each rectifier, which will distort the ac-side currents and increase power losses. This paper proposes both an adjusted space vector pulse width modulated (ASVPWM) method and proportional integral quasi resonant controller (PIQRC) method not only to force the ZSCC to be zero but also to reduce its ripples, which results in low frequency harmonic components in the ac side currents. This twofold objective can be achieved by adjusting the zero-vector duty ratios of ASVPWM to suppress the ZSCC and by using PIQRC to mitigate its predominant harmonics. Finally, the superiority and efficiency of the proposed control method in terms of ZSCC suppression and current ripple reduction are verified through comparative analysis with the conventional ZSCC-PI controller.
Citation
ALI CHEBABHI , AL-DWA Ala Addin Mohammed Mohammed Hussein , Said BARKAT , MOHAMMED KARIM FELLAH, , (2023-04-01), PROPORTIONAL INTEGRAL QUASI RESONANT CONTROLLER FOR ZERO-SEQUENCE CIRCULATING CURRENT AND RIPPLES SUPPRESSION IN PARALLEL THREE-PHASE PWM RECTIFIERS, Revue Roumaine des Sciences Techniques - Serie Électrotechnique et Énergétique, Vol:68, Issue:1, pages:18-23, ACADEMIEI ROMANE
- 2023-03-01
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2023-03-01
Backstepping control of a grid-connected four-leg PWM rectifier under both balanced and unbalanced grid conditions
This study focuses on a backstepping control (BSC) of a three-phase four-leg pulse width modulation (PWM) rectifier under balanced and unbalanced load and grid conditions. The proposed BSC for the three-phase four-leg PWM rectifier (3P-4LR) connected to the grid is build up using three independent backstepping controllers based on Lyabonov theory to control simultaneously DC voltage and input currents. As a result, unit power factor, stable DC-bus voltage, sinusoidal input 3P-4LR currents with a lower harmonic content and lower zero-sequence and natural currents can be accurately achieved. Not only that, robustness against voltage grid fluctuations, load and filter inductance variations can also be carried out. The effectiveness, superiority, good dynamic, and steady-state performances of the proposed BSC based 3P-4LR have been validated by numerical simulations compared to the conventional proportional-integral control under balanced and unbalanced load and grid conditions.
Citation
ALI CHEBABHI , AL-DWA Ala Addin Mohammed Mohammed Hussein , Said BARKAT , Fouad Zebiri, , (2023-03-01), Backstepping control of a grid-connected four-leg PWM rectifier under both balanced and unbalanced grid conditions, International Journal of System Assurance Engineering and Management, Vol:14, Issue:1, pages:1-18, Springer
- 2022
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2022
Modified Carrier-Based SPWM Technique for Zero Sequence Circulating Current Elimination in Parallel Four-Leg Inverters
For medium and high-power renewable energy applications, parallel four-leg inverters are highly recommended to increase the power capability, power rating, and the efficiency of the system. However, a zero-sequence circulating current (ZSCC) will be generated by the difference between the zero sequence voltages (ZSVs) due to unequal output currents and filters inductors, as well as other factors such as different switching frequencies and dead times when the inverters are connected in parallel via common DC and AC buses. The ZSCC will seriously distort the output currents and degrade the control performance and the dynamic response of the overall parallel system. This paper proposes a modified carrier-based SPWM to eliminate the ZSCC by eliminating the difference between ZSVs through the adjustment of modulation voltages of the modified carrier-based SPWM. The proposed ZSCC suppression method can successfully achieve the ZSCC suppression even when the parallel four-leg inverters system has unbalanced output current sharing and filters inductances. The simulation results based on the parallel four-leg inverters distinctly confirm the effectiveness of the proposed ZSCC suppression method.
Citation
AL-DWA Ala Addin Mohammed Mohammed Hussein , ALI CHEBABHI , Said BARKAT , Chouder Adel, ,(2022), Modified Carrier-Based SPWM Technique for Zero Sequence Circulating Current Elimination in Parallel Four-Leg Inverters,International Conference on Advanced Technology in Electronic and Electrical Engineering (ICATEEE’2022) , M’sila, Algeria,M'sila, Algeria