This paper focuses on discussing an energy management system (EMS) for a smart microgrid integrating multiple renewable sources. The task of the EMS is to efficiently balance power generation and consumption by controlling various energy sources, including photovoltaic systems, energy storage units, engine generator set and the utility grid. An EMS optimizes power flow between the microgrid components and keeps the micro-grid stable, by using different control strategies. In this microgrid, the PV system serves as the primary energy source, while the other sources of electrical energy act as backups. The energy management system prioritizes supplying load demand from either the PV system or the other sources, with load shedding during peak hours if the supplied energy is insufficient. The approaches based on StateMachine and StateFlow are discussed in this paper for enhancing the energy management system's performance.
{"title":"Energy Management System in Smart Micro-Grid","authors":"H. Bentarzi, A. Ouadi, A. Zitouni","doi":"10.51485/ajss.v8i2.196","DOIUrl":"https://doi.org/10.51485/ajss.v8i2.196","url":null,"abstract":"This paper focuses on discussing an energy management system (EMS) for a smart microgrid integrating multiple renewable sources. The task of the EMS is to efficiently balance power generation and consumption by controlling various energy sources, including photovoltaic systems, energy storage units, engine generator set and the utility grid. An EMS optimizes power flow between the microgrid components and keeps the micro-grid stable, by using different control strategies. In this microgrid, the PV system serves as the primary energy source, while the other sources of electrical energy act as backups. The energy management system prioritizes supplying load demand from either the PV system or the other sources, with load shedding during peak hours if the supplied energy is insufficient. The approaches based on StateMachine and StateFlow are discussed in this paper for enhancing the energy management system's performance.","PeriodicalId":153848,"journal":{"name":"Algerian Journal of Signals and Systems","volume":"56 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139131034","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
In recent years a trend of using CubeSat-class nanosatellites for commercial and scientific missions has taken the lead; this is due to the advantage of the available and low-cost products on the market without need for a large development and infrastructure investments. On our behalf, the advanced approach is to build a CubeSat platform dedicated to academic and engineering training on the different satellite subsystems, including development of a transponder based on products and software/hardware solutions accessible to the research and academic community in order to promote its use to engage in cross-team development on the basis of this platform and allowing the aggregation of a know-how. In this context, the work presented in this paper, handles partly the problematic by a proposal of the communication system design, intended to be integrated on our platform; with a particular focus on the implementation of an FSK modulator based on the Bell 202 standard. The reported development project will include simulations, implantation and the validation tests performed to achieve our first prototype.
{"title":"Design and simulation of Demodulator Based BELL-202 standard for NanoSatellite Communication Sub-system","authors":"Yasmina Mohamed belkacem, A. Boutte","doi":"10.51485/ajss.v8i1.186","DOIUrl":"https://doi.org/10.51485/ajss.v8i1.186","url":null,"abstract":"In recent years a trend of using CubeSat-class nanosatellites for commercial and scientific missions has taken the lead; this is due to the advantage of the available and low-cost products on the market without need for a large development and infrastructure investments. On our behalf, the advanced approach is to build a CubeSat platform dedicated to academic and engineering training on the different satellite subsystems, including development of a transponder based on products and software/hardware solutions accessible to the research and academic community in order to promote its use to engage in cross-team development on the basis of this platform and allowing the aggregation of a know-how. \u0000In this context, the work presented in this paper, handles partly the problematic by a proposal of the communication system design, intended to be integrated on our platform; with a particular focus on the implementation of an FSK modulator based on the Bell 202 standard. The reported development project will include simulations, implantation and the validation tests performed to achieve our first prototype.","PeriodicalId":153848,"journal":{"name":"Algerian Journal of Signals and Systems","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126188058","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
A. Meflah, Amel Benzina, Lyna Boucena, Z. Smara, F. Chekired, A. Abdelkader
In this paper, attention has been paid to the importance of knowing the exact values of the temperature coefficients used in modeling of four different types of photovoltaic modules these modules are; monocrystalline silicon m-Si, polycrystalline silicon p-Si, amorphous silicon a-Si, and micromorphous silicon thin film μm-Si installed in outdoor conditions in north-central Algeria. The value of the temperature coefficients provided by the module manufacturer in the datasheet is obtained under specific conditions called the standard test conditions STC, but in reality, these conditions vary significantly if the modules are operated in real climatic conditions, this will lead us to recalculate these coefficients again to improve our model using a database collected over a period of one year obtained by our characterization bench of PV modules using a two diodes model. A comparison was made between the simulation and the experimental data of the selected modules using the new values of the calculated temperature and those given at STC conditions, the obtained results show that the use of these new calculated temperature coefficients leads to a reduction of the the Mean Relative error MRE on the annual power from 2 to 7% depending on the PV module's technology which shows the importance of knowing the real value of the temperature coefficients that will be used in the PV module and system modeling.
{"title":"Impact of Voltage Temperature Coefficient on power prediction of four type silicon photovoltaic module technologies installed in real conditions in the north-central of Algeria","authors":"A. Meflah, Amel Benzina, Lyna Boucena, Z. Smara, F. Chekired, A. Abdelkader","doi":"10.51485/ajss.v8i1.179","DOIUrl":"https://doi.org/10.51485/ajss.v8i1.179","url":null,"abstract":"In this paper, attention has been paid to the importance of knowing the exact values of the temperature coefficients used in modeling of four different types of photovoltaic modules these modules are; monocrystalline silicon m-Si, polycrystalline silicon p-Si, amorphous silicon a-Si, and micromorphous silicon thin film μm-Si installed in outdoor conditions in north-central Algeria. The value of the temperature coefficients provided by the module manufacturer in the datasheet is obtained under specific conditions called the standard test conditions STC, but in reality, these conditions vary significantly if the modules are operated in real climatic conditions, this will lead us to recalculate these coefficients again to improve our model using a database collected over a period of one year obtained by our characterization bench of PV modules using a two diodes model. A comparison was made between the simulation and the experimental data of the selected modules using the new values of the calculated temperature and those given at STC conditions, the obtained results show that the use of these new calculated temperature coefficients leads to a reduction of the the Mean Relative error MRE on the annual power from 2 to 7% depending on the PV module's technology which shows the importance of knowing the real value of the temperature coefficients that will be used in the PV module and system modeling.","PeriodicalId":153848,"journal":{"name":"Algerian Journal of Signals and Systems","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115402564","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
J. E. Benmansour, Elhassen Benfriha, Abdelatif Bellar
This paper deals with the attitude tracking control problem of rigid satellite with uncertainties of disturbances. An adaptive proportional derivative controller (PD) is proposed to deal with the influence of external disturbance in the attitude controller. The uncertain disturbances can be estimated through an adaptive algorithm and can be compensated in the proposed controller. The tracking error and the closed-loop system stability are ensured based on the Lyapunov analysis. using the representation of the spacecraft dynamics especially the quaternion properties.Simulation results can clearly illustrate the feasibility, the effectiveness and the performance of the planned control strategies, which have been validated by the Monte Carlo method, the results can be extended to other adaptive attitude control laws.
{"title":"PD adaptive controller method for a three-axis stabilized rigid satellite attitude system","authors":"J. E. Benmansour, Elhassen Benfriha, Abdelatif Bellar","doi":"10.51485/ajss.v8i1.181","DOIUrl":"https://doi.org/10.51485/ajss.v8i1.181","url":null,"abstract":"This paper deals with the attitude tracking control problem of rigid satellite with uncertainties of disturbances. An adaptive proportional derivative controller (PD) is proposed to deal with the influence of external disturbance in the attitude controller. The uncertain disturbances can be estimated through an adaptive algorithm and can be compensated in the proposed controller. The tracking error and the closed-loop system stability are ensured based on the Lyapunov analysis. using the representation of the spacecraft dynamics especially the quaternion properties.Simulation results can clearly illustrate the feasibility, the effectiveness and the performance of the planned control strategies, which have been validated by the Monte Carlo method, the results can be extended to other adaptive attitude control laws.","PeriodicalId":153848,"journal":{"name":"Algerian Journal of Signals and Systems","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115957672","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
This work present a smart energy management system for a microgrid based on a hybrid intelligent adaptive algorithm composed of an echo state network and gray wolf optimizer techniques. The microgrid connected to the grid is composed of renewable sources such as photovoltaic and wind conversion associated with a hybrid battery hydrogen fuel generation storage system. An adaptive intelligent control unit is developed to manage the power flow between the hybrid power sources and other devices in the system. The controller chooses the optimal operating mode of power sources ensuring the continuous supply of the injecting power in the grid and maintaining the battery state of charge at acceptable levels as the hydrogen tank level. Complete mathematical modeling for the proposed system is implemented in MATLAB/Simulink to track the microgrid performance. Numerical and graphical results are presented to show the effectiveness of the proposed control system
{"title":"Smart Energy Management for a Microgrid System Based on Echo State Networks─Gray Wolf Optimizer Hybrid Algorithm","authors":"K. Babouri, I. Abadlia","doi":"10.51485/ajss.v8i1.182","DOIUrl":"https://doi.org/10.51485/ajss.v8i1.182","url":null,"abstract":"This work present a smart energy management system for a microgrid based on a hybrid intelligent adaptive algorithm composed of an echo state network and gray wolf optimizer techniques. The microgrid connected to the grid is composed of renewable sources such as photovoltaic and wind conversion associated with a hybrid battery hydrogen fuel generation storage system. An adaptive intelligent control unit is developed to manage the power flow between the hybrid power sources and other devices in the system. The controller chooses the optimal operating mode of power sources ensuring the continuous supply of the injecting power in the grid and maintaining the battery state of charge at acceptable levels as the hydrogen tank level. Complete mathematical modeling for the proposed system is implemented in MATLAB/Simulink to track the microgrid performance. Numerical and graphical results are presented to show the effectiveness of the proposed control system","PeriodicalId":153848,"journal":{"name":"Algerian Journal of Signals and Systems","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129069366","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Many non-linear controllers have been used to improve system performances and robustness of double fed induction machine (DFIG) based wind turbines like sliding mode control (SMC). However, this type of controller is less efficient due to a sign function that can lead to chattering phenomenon. To overcome this deficiency, the function is replaced by fuzzy logic control (FLC). This is what is proposed in this paper which deals with doubly fed induction generator (DFIG) based wind turbine conversion system (WECs) by sliding mode control and fuzzy sliding mode control (FSMC). The system control have been applied to the back to back converters that connect rotor windings to the grid, For the rotor side converter (RsC), we have presented sliding mode control, and fuzzy sliding mode control to monitor active and reactive powers independently, when the grid side converter (GsC) was set to keep a constant DC voltage with a desired power factor. The effectiveness of the proposed control systems is tested using Matlab/Simulink software under a wind speed fluctuation and parameters variation. The simulation results showed that the FSMC is more robust and has better dynamic performances than the SMC control
{"title":"DFIG Wind Turbine Controlled by Sliding Mode and Fuzzy-Sliding Control Modes","authors":"A. Benfdila, Zahira Bouguerra","doi":"10.51485/ajss.v8i1.180","DOIUrl":"https://doi.org/10.51485/ajss.v8i1.180","url":null,"abstract":"Many non-linear controllers have been used to improve system performances and robustness of double fed induction machine (DFIG) based wind turbines like sliding mode control (SMC). However, this type of controller is less efficient due to a sign function that can lead to chattering phenomenon. To overcome this deficiency, the function is replaced by fuzzy logic control (FLC). This is what is proposed in this paper which deals with doubly fed induction generator (DFIG) based wind turbine conversion system (WECs) by sliding mode control and fuzzy sliding mode control (FSMC). The system control have been applied to the back to back converters that connect rotor windings to the grid, For the rotor side converter (RsC), we have presented sliding mode control, and fuzzy sliding mode control to monitor active and reactive powers independently, when the grid side converter (GsC) was set to keep a constant DC voltage with a desired power factor. The effectiveness of the proposed control systems is tested using Matlab/Simulink software under a wind speed fluctuation and parameters variation. The simulation results showed that the FSMC is more robust and has better dynamic performances than the SMC control","PeriodicalId":153848,"journal":{"name":"Algerian Journal of Signals and Systems","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116108367","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Larbi Meziane, El-Hadi Guechi, A. Maidi, Y. Zennir, Karim Belahret
This article proposes a model predictive control (MPC) for trajectory tracking of a microrobot in a 2D fluidic environment. The reference trajectory is generated using a joystick device and it is estimated using a Luenberger observer. Assuming that the position of the microrobot is measured, the objective is to design an observer-based MPC control capable to track the reference trajectory generated by a joystick device. To optimize the MPC control, we have introduced a quadratic criterion where these parameters are determined to have a specific behavior of the closed loop system. Finally, simulation results are presented here to show the efficiency of the proposed approach
{"title":"Model predictive controller for a microrobot navigating in a vascular channel by following a trajectory generated with a joystick device","authors":"Larbi Meziane, El-Hadi Guechi, A. Maidi, Y. Zennir, Karim Belahret","doi":"10.51485/ajss.v7i4.178","DOIUrl":"https://doi.org/10.51485/ajss.v7i4.178","url":null,"abstract":"This article proposes a model predictive control (MPC) for trajectory tracking of a microrobot in a 2D fluidic environment. The reference trajectory is generated using a joystick device and it is estimated using a Luenberger observer. Assuming that the position of the microrobot is measured, the objective is to design an observer-based MPC control capable to track the reference trajectory generated by a joystick device. To optimize the MPC control, we have introduced a quadratic criterion where these parameters are determined to have a specific behavior of the closed loop system. Finally, simulation results are presented here to show the efficiency of the proposed approach \u0000 ","PeriodicalId":153848,"journal":{"name":"Algerian Journal of Signals and Systems","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125286435","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
This paper proposes a simple control scheme for UPQC (Unified Power Quality Conditioner) system based on five-level NPC (Neutral Point Clamped) inverter capable to compensate all disturbances under all voltage conditions. The proposed UPQC is designed by the integration of shunt and series APFs (Active Power Filters) sharing a common dc bus capacitor. The dc voltage is maintained constant using proportional integral voltage controller. To get the reference signals for shunt and series APFs, synchronous current detection method (SCD) and instantaneous reactive power (PQ) strategies are adopted. These reference signals are derived from the control algorithm and injected in LS-SPWM (Level Shifted-Sin Pulse Width Modulation) controllers to generate the switching signals. The performance of proposed UPQC system is evaluated using MATLAB-Simulink software and SimPowerSystem Toolbox for all voltage disturbances compensation. The simulation results demonstrate the effectiveness of proposed UPQC system to improve the power quality at the common connection point of the non-linear load in steady and transient conditions operation.
{"title":"Simple Control Method for Unified Power Quality based on Five-level Inverter Topologies Operating under all Voltage Disturbances","authors":"Salim Chennai","doi":"10.51485/ajss.v7i4.171","DOIUrl":"https://doi.org/10.51485/ajss.v7i4.171","url":null,"abstract":"This paper proposes a simple control scheme for UPQC (Unified Power Quality Conditioner) system based on five-level NPC (Neutral Point Clamped) inverter capable to compensate all disturbances under all voltage conditions. The proposed UPQC is designed by the integration of shunt and series APFs (Active Power Filters) sharing a common dc bus capacitor. The dc voltage is maintained constant using proportional integral voltage controller. To get the reference signals for shunt and series APFs, synchronous current detection method (SCD) and instantaneous reactive power (PQ) strategies are adopted. These reference signals are derived from the control algorithm and injected in LS-SPWM (Level Shifted-Sin Pulse Width Modulation) controllers to generate the switching signals. The performance of proposed UPQC system is evaluated using MATLAB-Simulink software and SimPowerSystem Toolbox for all voltage disturbances compensation. The simulation results demonstrate the effectiveness of proposed UPQC system to improve the power quality at the common connection point of the non-linear load in steady and transient conditions operation.","PeriodicalId":153848,"journal":{"name":"Algerian Journal of Signals and Systems","volume":"37 7","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120883413","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Temperature is an important indicator of the electrical equipment conditions. An accurate fault diagnosis can be performed by using the temperature profile of the electrical equipment surface. Infrared thermograph has gained more attention and becomes an interesting method in electrical fault diagnosis due to its advantages. This paper presents a review of different methods of image segmentation (clustering algorithms) applied to infrared thermograph which has been used to get useful information from electrical equipment of power system for faults detection, classification and localization.
{"title":"Different Clustering Methods Applied to Image Processing in Electrical Power System Field","authors":"Zakia Aici, H. Bentarzi","doi":"10.51485/ajss.v7i4.177","DOIUrl":"https://doi.org/10.51485/ajss.v7i4.177","url":null,"abstract":"Temperature is an important indicator of the electrical equipment conditions. An accurate fault diagnosis can be performed by using the temperature profile of the electrical equipment surface. Infrared thermograph has gained more attention and becomes an interesting method in electrical fault diagnosis due to its advantages. This paper presents a review of different methods of image segmentation (clustering algorithms) applied to infrared thermograph which has been used to get useful information from electrical equipment of power system for faults detection, classification and localization. \u0000 ","PeriodicalId":153848,"journal":{"name":"Algerian Journal of Signals and Systems","volume":"113 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115877240","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The Combined Cycle Gas Turbines (CCGT) has encountered a large diffusion over the last decades. Different researchers have focused on performance evaluation of CCGT through mathematical modeling techniques. Hence, there are some important factors which should be respected while modeling the CCGT. These factors include type of different components of the CCGT system, their configuration, the modeling methods, and the purpose of the modeling, the type and structure of the control system and the simulation objectives. Hence, a brief overview about CCGT design and technologies, mathematical modeling, simulation tools and methods are presented in this paper.
{"title":"A General Overview of Combined Cycle Gas Turbine Plants","authors":"D. Talah, H. Bentarzi","doi":"10.51485/ajss.v7i4.175","DOIUrl":"https://doi.org/10.51485/ajss.v7i4.175","url":null,"abstract":"The Combined Cycle Gas Turbines (CCGT) has encountered a large diffusion over the last decades. Different researchers have focused on performance evaluation of CCGT through mathematical modeling techniques. Hence, there are some important factors which should be respected while modeling the CCGT. These factors include type of different components of the CCGT system, their configuration, the modeling methods, and the purpose of the modeling, the type and structure of the control system and the simulation objectives. Hence, a brief overview about CCGT design and technologies, mathematical modeling, simulation tools and methods are presented in this paper. \u0000 ","PeriodicalId":153848,"journal":{"name":"Algerian Journal of Signals and Systems","volume":"10 30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124732313","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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