Articles

Access the latest knowledge in applied science, electrical engineering, computer science and information technology, education, and health.

Advanced Search
Filter Icon

Filters article

Years

FAQ Arrow
Single Year
Range Year
0
0

Source Title

FAQ Arrow

Authors

FAQ Arrow

29,939 Article Results

Performance analysis of conventional multilevel inverter driven PMSM drive in EV applications

10.11591/ijape.v14.i1.pp37-45
Rakesh G. Shriwastava , Pravin B. Pokle , Ajay M. Mendhe , Nitin Dhote , Rajendra M. Rewatkar , Rahul Mapari , Ranjit Dhunde , Hemant R. Bhagat Patil , Ramesh Pawase
This paper describes the simulation and hardware analysis of a two-level inverter-driven permanent magnet synchronous motor (PMSM) drive in EV applications. The design of various sections of PMSM Drive is discussed in detail. This proposed work is based on the voltage source converter (VSC) fed four-pole, 373 W. This paper highlights the design and implementation using a microcontroller of (PMSM) drive for various operating conditions. The experimental results show that the control and power circuit used in the design can achieve excellent and consistent speed performance. The performance along with test results of the speed and load variation of the PMSM drive is studied for steady-state conditions. The performance of the motor has been checked by increasing the inverter frequency with the speed of the motor and also keeping the frequency remains constant by varying the load and speed. Hardware analysis indicates the improved performance of the motor and the drive. It has good speed and torque responses and is suitable for EPS applications.
Volume: 14
Issue: 1
Page: 37-45
Publish at: 2025-03-01

A causal model to assess the influence of supply chain 4.0 on Moroccan companies’ performance

10.11591/ijaas.v14.i1.pp111-122
Abdellah Sassi , Mohamed Ben Ali , Oumaima Oullada , Ahmed Adri
Although supply chain 4.0 (SC 4.0) has been widely adopted by major industries globally, particularly in developed countries, Moroccan industries, including key sectors like automotive and aeronautical, are just beginning to give this concept the attention it deserves, therefore, the examination of the impact of this new concept on the companies’ performance has not been presented in the literature review. This paper presents a conceptual model used to evaluate the impact of the SC 4.0 levers (purchase and supply, production, storage and distribution, and sales and after-sales) on companies’ financial and organizational performance using the statistical package for the social sciences (SPSS) version 26.0, the goal is to investigate the relationship between the SC 4.0 levers as a mean construct in one hand, and the other hand, financial and organizational performance as results constructs, the findings in this research paper confirm the significant and positive relationship between these constructs, aligning with what was cited in the literature review.
Volume: 14
Issue: 1
Page: 111-122
Publish at: 2025-03-01

Optimizing standalone dual PV systems with four-port converter technology

10.11591/ijape.v14.i1.pp81-89
Sharma Sha , Rajambal Kalayanasundaram
This paper analyses the four-port converter (FPC) based PV system. The discussed FPC is developed for hybrid energy sources (HES) with the merits of a single converting stage, fewer switches, and simple topology. By tapping two source ports from the midway of its two switching legs, the FPC presented in this work is developed from the basic full bridge converter (FBC). The pulses are produced using the phase angle control with pulse width modulation (PPAS) technique. Different modes of operation of the FPC are analyzed elaborately to give an insight into its topology. To efficiently manage power distribution among the ports and regulate their voltage, two key control variables have been utilized: duty ratio and phase angle. An in-depth presentation is provided on the design and modeling of a four-port converter. It provides autonomous management of power allocation among terminals and regulation of load voltage. Finally, simulated key waveforms of the FPC and simulation results to demonstrate the decoupled regulation of power sharing and load voltage of a PV system under varying input and output conditions are presented. The experimental prototype of the four-port converter results is discussed and presented in detail.
Volume: 14
Issue: 1
Page: 81-89
Publish at: 2025-03-01

An optimal energy management strategy for a stand-alone PV/wind/battery hybrid energy system

10.11591/ijape.v14.i1.pp212-223
Otmane Zebraoui , Mostafa Bouzi , Badr Nasiri
This paper presents an optimization study of a stand-alone hybrid energy system that includes a photovoltaic energy generator, a wind energy generator, and lithium-ion storage batteries. In the proposed system architecture, solar, and wind sources are utilized as the primary power generators, while batteries serve as a secondary storage to ensure system autonomy across varying weather conditions. The aim is to improve system performance through an optimal energy management strategy that addresses operational constraints and electrical load needs while managing energy flow between sources and controlling the storage system. To manage energy flow between sources and load, an intelligent approach using a hierarchical algorithm is proposed to configure the optimal operating mode based on the power from both sources, load power, and battery state of charge. Additionally, a controller is developed to manage battery operating modes, ensuring state of charge (SOC) limits and maintaining a constant direct current (DC) bus voltage. Under varying operating conditions, the simulation results show the efficiency of the proposed management strategy in maintaining the power balance between supply and demand, providing a stable and continuous power supply, and keeping the batteries SOC within its limits and the DC bus voltage at its reference value.
Volume: 14
Issue: 1
Page: 212-223
Publish at: 2025-03-01

Technological readiness and business performance: the mediating effect of social media marketing

10.11591/ijaas.v14.i1.pp143-150
Sabri Shaker Ashoor Bin-Obaidellah , Noor Fadhiha Mokhtar , Safiek Mokhlis , Nur Aishah Awi
Understanding employee readiness towards adopting online marketing platforms is paramount in today’s digital economy, as it directly influences the effectiveness and competitiveness of businesses. This study investigates the relationship between employee technological readiness (ETR) and the business performance of micro and small enterprises (MSEs) in developing economies, focusing on data from Yemen. Drawing on the resource-based view theory, the study examined how adopting social media marketing (SMM) mediates this relationship. Data was collected from 362 managers/owners of MSEs in Yemen. The relationship between ETR, SMM, and business performance was examined using partial least squares structural equation modeling. The results show that ETR significantly influences SMM adoption, which impacts the business performance of MSEs. In addition, the study reveals that the relationship between ETR and business performance is partially mediated by SMM adoption. This finding highlights the critical role of employees’ readiness for technological advancements in facilitating effective SMM adoption, thereby contributing to the sustainability and success of MSEs.
Volume: 14
Issue: 1
Page: 143-150
Publish at: 2025-03-01

Information and communication technology transform the agricultural extension practices in North Maluku, Indonesia

10.11591/ijaas.v14.i1.pp46-52
Chris Sugihono , Sunarru Samsi Hariadi , Sri Peni Wastutiningsih
The world's swift digitization has profoundly transformed how farmers and extension workers operate, learn, and communicate. This study explores how information and communication technologies (ICT) adoption transforms agricultural extension practices in North Maluku, Indonesia. Using a qualitative approach, the study gathered and analyzed data from fifteen extension workers through interviews, observation, documentation, and focus group discussions from November 2022 to March 2023. The findings reveal ICT adoption has transformed the extension workers’ strategies in five areas: i) coordination and collaboration, ii) digital learning, iii) virtual group dynamics, iv) promotion and mobilization, and v) online consultation and monitoring. However, ICT adoption has not replaced traditional extension methods, such as demonstration plots, field schools, and field trips. The use of ICT is not always in line with the deterministic view that technology automatically changes society. In contrast, recursive patterns in practice adaptation create complex dynamics in which extension workers' decisions continue to play a key role in the evolution of agricultural extension. These findings enrich practical and policy debates regarding harnessing ICT potential for enhanced agricultural extension in Indonesia. Additionally, they advance theoretical discussions on the merits of the technological determinism perspective in analyzing ICT utilization.
Volume: 14
Issue: 1
Page: 46-52
Publish at: 2025-03-01

Bio-adsorbents from banana peel and corncob in reducing Naphthol Yellow S dye

10.11591/ijaas.v14.i1.pp255-267
Iva Rustanti Eri , Marlik Marlik , Khambali Khambali
Naphthol Yellow S, a textile dye waste, poses environmental pollution due to its degradable chromophore and auxochrome groups, necessitating processing. The aim was to analyze the adsorption kinetics of banana peel and corncob bioadsorbents to reduce the dye Naphthol Yellow S in wastewater. This research was a true experiment and the object used was an artificial Naphthol Yellow S solution with an initial concentration of 80 ppm applied to the adsorbent mass of 0.1, 0.2, and 0.3 grams and contact time of 3, 6, 9, and 12 hours. Dye levels were measured before and after treatment using a spectrophotometer. The best adsorption test occurred on the banana peel bioadsorbent with an adsorbent mass of 0.3 grams and a stirring time of 3 hours. The adsorption study of banana peel and corncob bioadsorbents showed that the entire adsorption process of Naphthol Yellow S dye followed the Langmuir isothermal adsorption model with R2 coefficients of 0.9953 and 0.999, respectively, and maximum adsorption capacities of 4.6516 and 5.2825 mg/g, respectively. The activated carbon adsorption kinetics followed the second order, with R2 values of 0.9737 and 0.9152, respectively. This study concluded that the bioadsorbent of banana peels and corncob was able to reduce the dye Naphthol Yellow S.
Volume: 14
Issue: 1
Page: 255-267
Publish at: 2025-03-01

Application management information systems in research and student activities: a case study of NAEM Vietnam

10.11591/ijaas.v14.i1.pp132-142
Huu Dang Quoc , Tien Phan Van , Ha Le Viet , Nguyen Thi Dung , Bui Quang Truong
The management information systems (MIS) for education bring many benefits to management at universities, educational institutions, and academies. The Vietnam National Academy of Education Management (NAEM) has successfully integrated information technology into the management, teaching, and learning process, bringing many benefits. Many professional activities have been included in the standard framework of the academy's faculties. However, more specific and detailed activities at specialized faculties are being actively researched and implemented for management purposes. This article presents a study on the construction and implementation of a management information system to support the management of activities at faculties, such as managing information about lecturers' teaching, information about scientific research activities, and published works, In addition, this system also allows students to engage in learning activities such as registering for internships and internships at enterprises, information about graduation thesis implementation, and lecturers' assignments to guide students. Deploying this system at faculties supports the management of detailed operations, improves data management and processing, and ensures consistency in management.
Volume: 14
Issue: 1
Page: 132-142
Publish at: 2025-03-01

Intelligent metaheuristic algorithm based FOPID controller for CSTR system

10.11591/ijaas.v14.i1.pp60-68
Ashish Sharma , Manoj Kumar Kar , Harsh Goud
The purpose of this research is to assess a continuous stirred-tank reactor (CSTR) system's performance. To enhance its performance, a fractional-order proportional-integral-derivative (FOPID) controller was employed, necessitating the tuning of independent control parameters. For this purpose, a sine-cosine algorithm (SCA) was introduced to optimize these parameters. The FOPID controller, tuned using the SCA, provides a powerful combination that addresses the complexities of the CSTR system. The fractional-order nature of the FOPID controller allows for superior tuning and robustness, offering enhanced flexibility in adjusting the system’s response characteristics and improving overall control performance. The SCA, known for its effective exploration of the search space through sine and cosine functions, ensures that the controller parameters are optimally selected to enhance the system’s performance by achieving an optimal fitness function. To showcase the effectiveness of the proposed SCA-tuned FOPID controller, comparisons were drawn with other optimization techniques designed for the CSTR system. The study presents time-domain characteristics and frequency responses of the proposed controller. The simulation results demonstrated that the SCA-FOPID controller significantly outperforms the other designed controllers, achieving a 54.07% reduction in the integral of time absolute error (ITAE) compared to genetic algorithm (GA), an 18.64% reduction compared to grey wolf optimizer (GWO), and a 34.79% reduction compared to differential evolution (DE). These significant reductions in ITAE underscore the effectiveness of this approach, highlighting the superior performance and robustness of the SCA-tuned FOPID controller in optimizing the CSTR system.
Volume: 14
Issue: 1
Page: 60-68
Publish at: 2025-03-01

Optimal control of the UPFC for the stability of electrical networks

10.11591/ijape.v14.i1.pp180-187
Houria Ababsia , Djalel Dib , Abdelghani Djeddi
The unified power flow controller (UPFC) is a crucial element in contemporary power systems, specifically engineered to augment the manageability and adaptability of power transmission in electrical networks. UPFC provides instantaneous modifications to voltage magnitude, phase angle, and line impedance by using sophisticated power electronics and control algorithms. This research examines the function of the unified power flow controller (UPFC) in enhancing the power quality of electrical networks. The UPFC's capacity to dynamically regulate and optimize power flow assists in minimizing voltage fluctuations, decreasing transmission line losses, and improving system stability. In addition, UPFC effectively addresses problems such as voltage sags, swells, and flickers, hence enhancing the resilience and dependability of the power supply. This research highlights the importance of unified power flow control (UPFC) technology in improving system performance and power quality of electrical networks via a thorough examination of its applications. This article presents research on the performance of the unified power flow controller (UPFC) device in a network, specifically focusing on the use of PID and FO-PID controllers for regulating active and passive power.
Volume: 14
Issue: 1
Page: 180-187
Publish at: 2025-03-01

Optimizing renewable energy potential in island areas based on analytical hierarchy process

10.11591/ijaas.v14.i1.pp218-226
Arnawan Hasibuan , Muhammad Sayuti , Widyana Verawaty Siregar , Ferdy Hidayatullah , Muhammad Daud , Azmi Azmi , Azman Azman , Rizky Almunadiansyah , Fahrian Roid
The decreasing availability of fossil fuels and their contribution to environmental degradation and emissions of harmful gases has encouraged a shift to renewable energy sources. This change aims to produce electricity without using fossil fuels. Banyak Islands, a new tourist destination in Aceh Singkil, Indonesia, is experiencing an increase in visitors, increasing electricity demand currently supplied by diesel power plants. Therefore, this research aims to examine the possibilities of wind and solar power plants and assess their energy output. The four factors used to determine the potential of renewable energy are technology, economics, environment, and social politics, with 13 sub-criteria. Analytical hierarchy process techniques prioritize potential alternative energy sources such as wind and solar power facilities. Research findings show that environmental criteria have a higher value (0.3455) than financial criteria (0.2861), next is technological criteria (0.1734), then socio-political criteria (0.1603). Based on the results of the requirements and sub-requirements, wind power generation is the most effective and efficient alternative energy used in the Banyak Islands region (0.549), followed by solar power generation (0.451). This data shows that the area is prone to medium to high wind speeds, specifically in geographic locations facing the Indian Ocean which is located offshore.
Volume: 14
Issue: 1
Page: 218-226
Publish at: 2025-03-01

Digital transformation COVID-19 era: startup strategies for technology, management, and people

10.11591/ijaas.v14.i1.pp11-18
Frediezel G. De Leon , Mary Ann T. Sedero , Marianne Feliz R. Antiquiera , Megara Juliene P. Silvederio , Angela R. Sara
Startups are not an exception to the fast acceleration of digital transformation across sectors caused by the COVID-19 pandemic. Digital transformation has served as a strategic lever for startups to improve operations, enhance customer experiences, and develop new business models. This study investigates how startups in Western Visayas, Philippines, navigated the pandemic while undergoing digital transformation. Our primary objective is to provide a comprehensive understanding of digital transformation, outlining its key components. By analyzing relevant business literature, we identified three core areas: i) technology, ii) management, and iii) people. This research explores the strategies employed by startups to embrace digital transformation, the technological tools they utilize, and the critical role of effective leadership and organizational culture in successful transformation initiatives. Data was collected through an online survey administered on Qualtrics. The findings reveal that most startups adapted their business models, leveraged social media platforms, and relied on their customer base for support during the pandemic. This study contributes to the existing knowledge base by offering insights into the digital transformation landscape in the Philippines. Furthermore, it enhances our understanding of the strategies and processes required to address the challenges of the digital age.
Volume: 14
Issue: 1
Page: 11-18
Publish at: 2025-03-01

Internet of things based seasonal auto regression integrated moving average model for hydroponic water quality prediction

10.11591/ijaas.v14.i1.pp123-131
April Firman Daru , Susanto Susanto , Whisnumurti Adhiwibowo , Alauddin Maulana Hirzan
Technological progress significantly impacts agriculture, with the rapid expansion of industrial and residential areas leading to a scarcity of agricultural land. Modern farming techniques like hydroponics have emerged as a solution, allowing plant growth with water as a medium. Real-time monitoring of water quality is crucial for hydroponic systems. Lettuce (Lactuca sativa) is particularly compatible with hydroponics due to its short growth cycle and nutritional value. Key factors for successful cultivation include maintaining pH, temperature, and nutrient levels within optimal ranges. To address water quality monitoring complexities, internet of things (IoT) technology offers a promising solution. IoT devices autonomously gather environmental metrics such as temperature, pH, humidity, and nutrient concentrations. This study integrates an IoT-driven hydroponic water quality monitoring system using the seasonal auto-regressive integrated moving average (SARIMA) algorithm and the ESP32 microcontroller. This approach allows real-time water quality management, enhancing lettuce cultivation efficiency and productivity. The proposed model achieved 98.6% accuracy, effectively predicting water quality.
Volume: 14
Issue: 1
Page: 123-131
Publish at: 2025-03-01

Comparison of dual isolated converters with flyback converters for bidirectional energy transfer

10.11591/ijape.v14.i1.pp55-63
Rahul G. Mapari , Kishor Bhangale , Sunil Somnath Kadlag , Rakesh Shriwastava
This article demonstrates a proposed technique for improving single-stage rectifiers' power factor (PF) and controlling the load voltage in response to grid voltage and load changes. To alleviate the above problem, this article offers a novel bi-directional continuous switching pulse width modulation (CSPWM) and sinusoidal pulse width modulation (SPWM) based converter that can improve PF and reduce harmonics. This converter is evaluated based on two cases, Case I: CSPWM-based rectification and SPWM-based inversion scheme, and Case II: Rectification and inversion, both operations using the SPWM scheme. The proposed control scheme uses two Bi-directional IGBTs and two diodes, which are bridgeless, do not need a transformer, and are free from the output current sensor. The suggested scheme is simulated using MATLAB/Simulink and implemented on DSPic33FJ64mc802 platforms to validate the effectiveness of the proposed approach using two cases for a 1 KW system. The suggested control scheme provides improved PF, good voltage regulation, and depreciation in harmonics and total harmonic distortions (THD) compared to existing systems that enhance converter performance.
Volume: 14
Issue: 1
Page: 55-63
Publish at: 2025-03-01

Kinetic study of biogas production from anaerobically digested rice straw

10.11591/ijaas.v14.i1.pp247-254
Maninder Kaur , Sandeep Dhundhara
Rising concern about environmental protection has demanded prompt researchers’ attention towards alternative renewable energy sources. Thus, biofuel production with biodegradation of crop straws through anaerobic digestion has attracted the attention of the scientific community. However, the lignocellulosic nature of rice straw poses resistance to its disintegration through anaerobic digestion. Aiming to optimize the concentration of sodium hydroxide pretreatment of rice straw for efficient biogas production this study was conducted. For this purpose, the pretreatment was done on rice straw with different concentrations of sodium hydroxide at about 25 °C temperature for 24 hours before subjecting it to anaerobic digestion for biogas production. The 6% sodium hydroxide pretreated rice straw was observed to be resulting in the highest cumulative biogas production which was found to be 56.3% higher than untreated rice straw. In the kinetic study of biogas production, 6% NaOH pretreated rice straw shows the highest biogas production potential at the highest rate of 15.8496 ml/day with a minimum lag period of 0.6758. The experimental study and kinetic study results represent that 6% NaOH pretreated rice straw has the highest biogas production.
Volume: 14
Issue: 1
Page: 247-254
Publish at: 2025-03-01
1 2 3
...
1995 1996
Show 248 of 1996

Discover Our Library

Embark on a journey through our expansive collection of articles and let curiosity lead your path to innovation.

Explore Now
Library 3D Ilustration