M. SAIGAA Djamel

Prof

Directory of teachers

Department

Departement of ELECTRONICS

Research Interests

Specialized in Departement of ELECTRONICS. Focused on academic and scientific development.

Contact Info

University of M'Sila, Algeria

Email : djamel.saigaa@univ-msila.dz

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Recent Publications

2024-06-25

A Novel Method to Obtain Reverse Bias I–V Curves for Single Cells Integrated in Photovoltaic Modules

Despite the existence of accurate mathematical models facilitating the analysis of photovoltaic (PV) sources’ behaviour under diverse conditions, including normal operation and situations involving mismatch phenomena such as partial shadowing and various faults (i.e., PV cells operating in forward bias and reverse bias quadrants), an important issue still persists. Crucial parameters essential for adjusting these models, particularly those related to reverse-biased characteristics such as breakdown voltage, are often absent in manufacturers’ datasheets. This omission presents a substantial challenge, as it restricts the ability to acquire comprehensive and accurate information required for a thorough analysis of devices in the second quadrant. To address this issue, our research introduces a novel method for measuring the reverse-biased I–V characteristics of individual PV cells within a module without having to dissociate them from the PV module encapsulants. The process involves measuring the forward-bias I–V curves of both the fully illuminated PV module and a partially shaded PV module with only one completely shaded cell. This can be achieved outdoors and by utilising commercially available I–V tracers. Thus, the reverse I–V curve can easily be derived from these forward bias I–V curves. Finally, the proposed method serves as a nondestructive technique for characterising solar cells in the second quadrant. This innovative approach offers a promising solution for assessing the performance and health of PV modules without causing damage and may result in significant cost savings.
Citation

M. SAIGAA Djamel, djoubair abdelouahab .benhamadouche@univ-msila.dz, , (2024-06-25), "A Novel Method to Obtain Reverse Bias I–V Curves for Single Cells Integrated in Photovoltaic Modules", [international] Power Electronics and Drives , Teresa Orlowska-Kowalska

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2024-06-16

Improved dynamic reconfiguration strategy for power maximization of TCT interconnected PV arrays under partial shading conditions

In photovoltaic (PV) systems, partial shading is a major issue that may cause power losses, hot spots, and PV modules damage.
Thus, PV array dynamic reconfiguration approaches based on irradiance equalization (IEq) between rows have been proposed
to alleviate the shading effect thereby improving PV power production. However, the existing IEq-based reconfiguration
techniques focus only on the minimization of row current error, without taking into consideration the voltage effect, which
in turn, may result in power losses. In this regard, an improved reconfiguration strategy is proposed in the present paper to
maximize the power production of a TCT interconnected PV array operating under partial shading conditions. The proposed
strategy aims to achieve a PV array reconfiguration that mitigates the droop voltage issue by considering irradiance levels
in both rows and columns. An in-depth investigation of a typical PV module and TCT module is provided, demonstrating
that there are cases where the partial shading does not affect the PV module current but the operating voltage. In addition,
an analysis highlighting the limitations of the IEq technique regarding the droop voltage issue is presented. Furthermore,
mathematical development is established for deriving the objective function of the proposed strategy. The efficiency of the
proposed reconfiguration strategy is assessed through experimental tests carried out on a 20 MWp PV station in Ain El-Melh,
Algeria. The obtained results reveal that the proposed method overcomes the weaknesses of the existing IEq strategy and
ensures power production higher than the TCT and IEq configurations by 17.25% and 19.34%, respectively
Citation

M. SAIGAA Djamel, Abdelouadoud Loukriz, Moadh Kichene, Ahmed Bendib, Hafiz Ahmed, , (2024-06-16), "Improved dynamic reconfiguration strategy for power maximization of TCT interconnected PV arrays under partial shading conditions", [international] Electrical Engineering , Springer

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2021-05-12

A novel equivalent circuit-based model for photovoltaic sources

This paper presents a novel circuit-based model of photovoltaic (PV) source (cell, module or array) that can be easily integrated into any circuit-oriented simulators such as PSpice, PSCAD/EMTDC, PSIM, PowerSys of MATLAB/Simulink, etc. This proposed model is able to simulate accurately any commercial PV module behavior either exposed to uniform or non-uniform irradiance distributions. Moreover, it can also simulate perfectly PV arrays behavior in large scale PV systems. It is mainly derived from the conventional one-diode equivalent circuit model, which consists of a current source, a diode and two resistors. By modifying the linear part of this latter and including implicitly the effect of weather parameters (irradiance and cell temperature) on the circuit elements, our proposed model will encompass two types of dependent sources (voltage and current sources) and two resistances.

To validate the truthfulness of the proposed novel model, comparisons between simulated and outdoor measured I-V characteristics on commercial PV module are done. Preliminary results have shown promising outputs and accuracy of this model.
Citation

M. SAIGAA Djamel, Mebarek Bahri, , (2021-05-12), "A novel equivalent circuit-based model for photovoltaic sources", [international] Optik , Elsevier

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2017-01-01

MPPT Performance Analysis using an Online Measurement Method with an Outdoor Monitoring

This paper is intended to contribute to the conceptual design of an electronic helping tool to analyze the
performance of maximum power point tracking systems(MPPT). Indeed, the MPPT is a device ensuring the connection
between the PV generator and the rest of the PV conversion chain in order to extract and transfer the maximum of the
electric power. In this work, we present a new method in analyzing MPPT performance witch the principle is based on
the comparison of the maximum power(Pmp) that can be generated by the PVG and the power transferred to the DC
load by the MPPT system. The measurement of these powers is realized outdoor with an online mode; i.e., the PV
conversion chain is maintained in operation. The Pmp value obtained by measuring the couple (Isc, Voc). In this paper
we will present the hardware implementation of the proposed technique. The measurement of climatic parameters such
as, solar radiation and cell temperature are not taken into account, which characterizes the peculiarity of this method.
Keywords: PVG, Maximum power, MPPT, Online measurement, Analysis.
Citation

M. SAIGAA Djamel, AHMED AZI Alaeddine, , (2017-01-01), "MPPT Performance Analysis using an Online Measurement Method with an Outdoor Monitoring", [international] International Journal of Control Theory and Applications , International Science Press

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2017

Fault Tolerant Control Based on Adaptive Fuzzy Sliding Mode Controller for Induction-Motors

In industry, the service continuity of an electrical system drives requires degrees of reliability of operation
and high safety. Thus, the system requires robust elements to avoid falling into the defects. But the appearance of
defects, it is inevitable. It is therefore necessary to solve this problem by developing a control technique that can
ensure continuity of operation in the presence of faults. Indeed, the sliding mode adaptive control based on fuzzy
logic ensures the stability of the system healthy and able to compensate certain types of defects: the defects of low
severity. In fact, is with the fuzzy sliding controller with varying control gains. This one is based on supervisory
fuzzy inference system using the adaptive tune in order to improve the performance of controller in presence of
current sensors faults. In addition, the sensors are the most sensitive elements and the seat of frequent faults, and
play a leading role in the closed loop control. An operation of a tolerant control the default intended to compensate
the default offset sensor. The developed algorithm is validated by simulation and the obtained results showed the
effectiveness and the robustness of the proposed approach under different scenarios.
Citation

M. SAIGAA Djamel, (2017), "Fault Tolerant Control Based on Adaptive Fuzzy Sliding Mode Controller for Induction-Motors", [national] International Journal of Intelligent Engineering and Systems , INASS

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2015

fault-tolerant fuzzy gain-adaptive PID control for a 2 DOF helicopter (TRMS system)

In this paper, a Fault-Tolerant control of 2 DOF
Helicopter (TRMS System) Based on Fuzzy Gain-Adaptive PID is
presented. In particular, the introduction part of the paper presents a
Fault-Tolerant Control (FTC), the first part of this paper presents a
description of the mathematical model of TRMS, an adaptive PID
controller is proposed for fault-tolerant control of a TRMS helicopter
system in the presence of actuator faults, A fuzzy inference scheme is
used to tune in real-time the controller gains, The proposed adaptive
PID controller is compared with the conventional PID. The obtained
results show the effectiveness of the proposed method
Citation

M. SAIGAA Djamel, Kamel KARA, , (2015), "fault-tolerant fuzzy gain-adaptive PID control for a 2 DOF helicopter (TRMS system)", [international] international scientific research and experimental development , istanbul, turkey

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2014-10-17

Modeling and simulation of photovoltaic array with different interconnection configurations under partial shading conditions for fill factor evaluation

Partial shading of a photovoltaic array is the condition under which different modules in the array experience different irradiance levels due to shading. This difference causes mismatch between the modules, leading to undesirable effects such as reduction in generating power and hot spots. The severity of these effects can be reduced by changing module interconnections of a solar array, three different interconnections configurations, series-parallel (SP), bridge-linked (BL) and total-cross-tied (TCT) of photovoltaic generator are studied using simulation models to compare their performances, also studied their characteristic parameter variation in the function of shading, with a special attention to: Open circuit voltage (Voc), Short circuit (Isc), Maximum power (Pmp) and fill factor (FF) evaluation, in order to find which configuration is less influential to partial shading effect.
Citation

M. SAIGAA Djamel, HAMDI Soufiane, , (2014-10-17), "Modeling and simulation of photovoltaic array with different interconnection configurations under partial shading conditions for fill factor evaluation", [international] International Renewable and Sustainable Energy Conference , Maroc

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