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31,456 Article Results

Simulation and analysis of wind energy potential for turbine systems in Pekanbaru-Indonesia based on MATLAB Simulink

10.11591/ijpeds.v16.i2.pp1341-1347
Nicholas Pranata , Fahmy Rinanda Saputri
The widespread use of electricity today, which is primarily generated from fossil fuels, results in significant environmental consequences due to excessive consumption. Renewable energy has been proposed as a solution to mitigate this issue. In Indonesia, particularly in Pekanbaru City, the demand for electricity currently exceeds the supply. However, this region has substantial potential for renewable energy sources. This study presents the modeling and analysis of wind energy, specifically wind turbine systems, using MATLAB Simulink. The methodology involves identifying existing problems, collecting technical data relevant to Pekanbaru and turbine components, and designing the turbine system within MATLAB Simulink. The results of this system indicate a mechanical power output of 1,191 watts, along with a calculated torque of 48.63 Nm. These findings suggest that the system is suitable for small-scale electricity needs. Further research and considerations are necessary to optimize the design and application of turbine systems for sustainable energy production. By improving the efficiency and scalability of wind energy systems, Indonesia can better address its energy deficit while reducing the environmental impacts associated with fossil fuel consumption.
Volume: 16
Issue: 2
Page: 1341-1347
Publish at: 2025-06-01

Optimal placement of DGs in a multi-feed radial distribution system using actor-critic learning algorithm

10.11591/ijape.v14.i2.pp319-327
Neelakanteshwar Rao Battu , Surender Reddy Salkuti
Multi-feed radial distribution systems are used to reduce the losses in the system using reconfiguration techniques. Reconfiguration can reduce the losses in the system only to a certain extent. Introduction of distributed generators has vastly improved the performance of distribution systems. Distributed generators can be used for reduction of loss, the improvement of the voltage profile, and reliability enhancement. Distribution generators play a vital role in reducing the losses in the distribution system. Placement of distributed generators in a multifeed system is a complex task to be solved using classical optimization methods. Classical optimization techniques may sometimes fail to provide a converged solution. Installation of distributed generators at suitable locations in a multi-feed system is found in this paper using the actor-critic learning algorithm. Actorcritic learning approach uses temporal difference error as a signal in making judgements regarding actions to be taken for future states in accordance with rewards that have been obtained by applying the present policy. The approach is applied to a standard 16-bus distribution system for reduction of system losses, and the results are discussed.
Volume: 14
Issue: 2
Page: 319-327
Publish at: 2025-06-01

Hardware implementation of safety smart password based GSM module controlling circuit breaker

10.11591/ijape.v14.i2.pp441-448
Rakesh G. Shriwastava , Pawan C. Tapre , Rajendra M. Rewatkar , Swapna M. Choudhary , Ramesh K. Rathod , Sham H. Mankar , Hemant R. Bhagat Patil , Salim A. Chavan
This research work highlights the hardware implementation of safety smart password-based GSM module controlling circuit breaker. Safety is the major concern in daily life for domestic activities. In current scenario, accidental death of a lineman are the major issues and to protect operators for the same. To control circuit breakers, passwords security is essential for lineman. Due to that electrical accident’s ratio is increased day to day life at the time of repairing the lines. It is also done due to lack of communication and coordination between maintenance and substation. For safety of lineman, on and off line turning operation is proposed. Secure password is for breaker operation and maintenance. In the proposed system, password is sent to the line operator's mobile phone and GSM module by automatic voltage regulator (AVR) microcontroller. Entered password and password received by the GSM receiver is match so circuit breaker will be smoothly operated. If password is incorrect, message will appear on the LCD display for security purposed and message sent to control room regarding unauthorized access to the system.
Volume: 14
Issue: 2
Page: 441-448
Publish at: 2025-06-01

Exploring the relationship between personality traits and sexual harassment in Indonesian university students

10.11591/ijphs.v14i2.25312
Patria Rahmawaty , Zulkarnain Zulkarnain , Andra Ade Riyanto
Sexual harassment in educational institutions has long been a global concern. Various studies on sexual violence have been carried out, but research on personality, power, and moral disengagement, which are associated with sexual harassment behaviour among students in higher education, was still limited. Therefore, this research aims to investigate the influence of personality, power, and moral disengagement on sexual harassment behaviour among students in higher education. This research involved 403 students from 5 universities in Balikpapan City, East Kalimantan Province, Indonesia. We used structural equation modelling (SEM) analysis to test the influence of each variable. According to the research's findings, moral disengagement, and personality both have a direct impact on sexual harassment. In addition, moral disengagement has been proven to be able to mediate between power and sexual harassment. The results of this research provide important implications for public policy makers in higher education, practitioners, researchers, and the public in identifying factors of sexual harassment among students in higher education.
Volume: 14
Issue: 2
Page: 1022-1030
Publish at: 2025-06-01

Parametric analysis on the effect of V-type rotor magnet geometry on the dynamic performance of PMSMs

10.11591/ijpeds.v16.i2.pp769-779
Ahmed Jadaan Ali , Ahmed Hashim Ahmed , Ahmed Saad Yahya , Basil Mohammed Saied
The research examines how different dimensions of V-type permanent magnet synchronous motor (PMSM) magnets influence the magnetic flux between the rotor and the stator system because matching these dimensions optimizes the magnetic flux for better torque production. As long as the magnet size stays within the right dimensions, it builds greater flux density, which leads to better torque output and better efficiency. Research confirms that flow barriers strengthen engine capabilities. The research applies parametric optimization to find the perfect magnet shapes while showing how they boost electric vehicle motors to meet their requirements. Our tests with finite element method (FEM) show how changing magnet dimensions affects performance. Researchers adjust magnetic measurements frequently until the optimal setup of 50 mm thick by 4.5 mm wide emerges. Their action boosts flux density, which improves motor torque and energy capacity. At these optimal dimensions, the engine achieved 95% efficiency with precise flow barrier adjustments that helped increase torque output while reducing unstable electricity output.
Volume: 16
Issue: 2
Page: 769-779
Publish at: 2025-06-01

Stress, stressors, and stress management practices among public-school teachers

10.11591/ijphs.v14i2.24869
Jonathan Lapuz Mañas , Roel Sanchez Ang
Stress manifests differently among individuals in various circumstances, stemming from multiple sources. Teachers, in particular, encounter many stressors from personal and work-related domains. This study examines the stress levels of elementary, junior high school, and senior high school public school teachers within Congressional District IV of the Division Office of Nueva Ecija, focusing on everyday life stressors. Additionally, it investigates the stress management practices they employ for coping. The personal metrics of these teachers were analyzed to ascertain their significant relationship with stress levels. Data were randomly collected from 273 respondents through a questionnaire developed by Villamayor. The study unveils that public-school teacher experience slight stress levels and utilize diverse stress management techniques to tackle these stressors. However, the personal metrics of respondents were found to have an insignificant relationship with their stress levels. Nevertheless, the findings of this study pave the way for developing a comprehensive stress management plan to assist public school teachers.
Volume: 14
Issue: 2
Page: 818-826
Publish at: 2025-06-01

Electricity generation and multi-purpose applications from biogas and biomethane

10.11591/ijpeds.v16.i2.pp1325-1340
Moses Jeremiah Barasa Kabeyi , Joseph Akpan , Oludolapo Akanni Olanrewaju
Biogas produced from biomass is a renewable energy resource with high value potential to support sustainable development. This study presents abridged advances and pathways from biogas and biomethane to electricity with opportunities and challenges in generation, conversion, and storage needed for use in many areas like transportation, power generation and storage, building, and industrial heat production sectors. A high knock resistance, making it suitable for use in thermal systems with high compression rate, characterizes biogas combustion. Various prime movers using biogas as fuel can be used for electricity generation, including direct conversion through fuel cells, which is a significant pathway to sustainable energy storage. Biogas to electricity conversion by a generator set is much more practical today. Turbines, micro turbines, Stirling engines, diesel engines, and petrol engines are only some of the viable possibilities for converting biogas to electricity. Biomethane can be used as a substitute for natural gas in all its applications with little or no modifications to the fuel infrastructure. Finally, this study discusses biogas and biomethane’s limits and contribution to the Sustainable Development Goals 2, 6, 7, 8, 9, 11, 13, 14, and 17.
Volume: 16
Issue: 2
Page: 1325-1340
Publish at: 2025-06-01

Advanced multi-source converters for DC microgrids: integrating photovoltaic, wind, and hybrid storage systems

10.11591/ijpeds.v16.i2.pp1261-1273
Suganthi Neelagiri , Pasumarthi Usha
This paper presents a new configuration for integrating multi-source and hybrid energy storage (HES) systems tailored for a direct current (DC) microgrid. Unlike conventional multi-input converters, the proposed design features a hybrid energy storage system combining ultracapacitors and batteries. The proposed system is intended to effectively manage power variations from wind, photovoltaic (PV) sources, and abrupt load changes. The inclusion of ultracapacitors addresses high-frequency fluctuations, thereby extending battery life and reducing the overall size of the storage unit. The control framework is designed to maintain power balance within the system, ensuring that renewable energy sources operate at their maximum power points and that energy storage is efficiently charged and discharged based on power availability. The main advantages of this configuration include: i) a reduced number of switches, ii) built-in voltage boosting and regulation for the ultracapacitor, and power-sharing between the battery and ultracapacitor, and iii) a streamlined control system with fewer components. The paper details the investigation, modeling, and design of the planned system, supported by MATLAB simulation results.
Volume: 16
Issue: 2
Page: 1261-1273
Publish at: 2025-06-01

Hybrid MPPT technique using fuzzy logic and P&O of solar power system

10.11591/ijpeds.v16.i2.pp1061-1069
Karima Et-Torabi , Souhail Barakat , Badr N’hili , Abdelouahed Mesbahi , Ayoub Nouaiti
This paper introduces an enhanced perturb and observe (P&O) technique with a variable step size utilizing fuzzy logic to address the limitations of the traditional P&O technique, particularly under rapidly fluctuating solar radiation conditions. The performance of the suggested variable step size FLC-P&O maximum power point tracking (MPPT) and the constant step size P&O techniques is simulated and evaluated under various operating scenarios using MATLAB/Simulink software. The suggested technique was successfully validated using a boost converter connected to a Canadian Solar CS6P-240P photovoltaic (PV) model. The results demonstrate that the FLC P&O technique improves response accuracy and reduces steady-state terminal voltage fluctuations. Moreover, the findings show that the suggested technique provides a faster response and higher MPPT efficiency compared to the traditional P&O technique, particularly during sudden variations in solar irradiance.
Volume: 16
Issue: 2
Page: 1061-1069
Publish at: 2025-06-01

Visceral manipulation intervention in functional dyspepsia with or without gastroesophageal reflux disease: a systematic review

10.11591/ijphs.v14i2.24874
Arisandy Achmad , Haidzir Manaf
Functional dyspepsia is a prevalent gastrointestinal disorder characterized by symptoms like early satiety, postprandial fullness, and epigastric pain, affecting individuals with or without gastroesophageal reflux disease (GERD). The aim was to systematically map and summarize the existing literature on visceral manipulation interventions for functional dyspepsia. The systematic review followed rigorous methodology to ensure the validity and reliability of the findings. The study involved electronic searches of four major databases and five stages to review references to screened articles from January 2012 to February 2024. The search terms include "visceral manipulation," “visceral osteopathy”, “osteopathic manipulation”, "functional dyspepsia," “gastroesophageal reflux”. Six articles were included in the review. Although there is currently little data to guide therapeutic treatment, research indicates that visceral manipulation therapy is feasible for people with functional dyspepsia, whether or not they also have GERD symptoms. Research on the effects of visceral manipulation on people with functional dyspepsia, whether or not they have GERD, is necessary to better understand treatment procedures and evaluate their advantages for patients with this condition. The growing interest in visceral manipulation intervention for functional dyspepsia is supported by mixed evidence, highlighting the need for high-quality research and larger sample sizes in future randomized controlled trials to determine its true impact.
Volume: 14
Issue: 2
Page: 1052-1059
Publish at: 2025-06-01

Optimization of renewable energy-based electrical systems on tourist ships in Labuan Bajo

10.11591/ijpeds.v16.i2.pp1306-1313
I Made Aditya Nugraha , I Gusti Made Ngurah Desnanjaya
The use of fossil fuels on tourist boats in Labuan Bajo poses challenges in the form of high operational costs and significant environmental impacts. This study aims to optimize the renewable energy-based electrical system by utilizing a hybrid photovoltaic and generator system on tourist boats. The methods used include simulation and technical, economic, and socio-cultural analysis to evaluate the feasibility and efficiency of the system. The results of the study show that technically, the hybrid photovoltaic (PV)-generator system is able to improve energy efficiency and reliability of electricity supply, especially in dealing with fluctuations in power needs. From an economic aspect, this system has been proven to reduce fossil fuel consumption by up to 40%, which has an impact on long-term operational cost savings, even though the initial investment is quite high. Socio-culturally, the implementation of this system supports sustainability values and provides a positive image for the tourism industry in Labuan Bajo as an environmentally friendly destination. The use of a hybrid PV-generator system is an innovative and sustainable solution for tourist boats in Labuan Bajo, which not only improves technical efficiency and economic benefits but also supports environmental conservation and sustainability-based tourism.
Volume: 16
Issue: 2
Page: 1306-1313
Publish at: 2025-06-01

Comparison of speed loop control methods for IPM motor in electric vehicles

10.11591/ijpeds.v16.i2.pp719-727
An Thi Hoai Thu Anh , Tran Van Nhu , Tran Trong Hieu
With its outstanding features, such as high efficiency and torque-producing capability compared with the induction motor, the interior permanent magnet synchronous motor (IPMSM) has been increasingly researched and used for electric vehicles. The speed control strategy for both low and high speeds of the IPMSM is studied in conjunction with controllers based on the field oriented control (FOC) structure to ensure accurate and stable system response under various operating conditions. This paper focuses on three control methods: sliding mode control (SMC), backstepping (BSP), and proportional integral (PI) for the speed loop to enhance system stability. Coupled with the presence of load disturbances, environmental disturbances, and uncertainties in parameters, comparisons and observations regarding the three methods can be made to conclude system stability and performance. Finally, simulation results on MATLAB/Simulink software confirm the effectiveness and validity of the proposed speed controllers.
Volume: 16
Issue: 2
Page: 719-727
Publish at: 2025-06-01

Harmonic reduction in power grids: implementing a four-legged multilevel inverter as an active power filter using model predictive control

10.11591/ijpeds.v16.i2.pp922-935
Asep Andang , Firmansyah Maulana Nursuwars , Andri Ulus Rahayu , Imam Taufiqurrahman , Ervan Paryono
This study explores the implementation of a five-level cascaded three-phase four-wire inverter as an active power filter to mitigate harmonics in power grids. Harmonic components in the load current are transformed and filtered to create a reference current, which serves as the foundation for designing the inverter’s switching pattern. The predicted current, generated through circuit modeling, is compared with the reference current using the model predictive control (MPC) method. The accuracy of this approach is evaluated using a cost function that measures the difference between the predicted and reference currents. Simulation results reveal that the application of the hybrid power filter can effectively suppress harmonics, reducing the total harmonic distortion (THD) to below 5%, thereby meeting power quality standards. Furthermore, it addresses load imbalances, ensuring that the phase currents at the source remain nearly equal. Additionally, the hybrid power filter significantly decreases the neutral current, reducing it to just one-tenth of its original value. While MPC has demonstrated its effectiveness in controlling power converters and multilevel inverters, its application to active power filters remains underexplored. This study investigates the potential of a four-legged multilevel inverter with MPC to enhance power quality by reducing harmonics in three-phase four wire systems.
Volume: 16
Issue: 2
Page: 922-935
Publish at: 2025-06-01

Modeling and analysis of three-phase boost rectifier for DC fast EV charging

10.11591/ijpeds.v16.i2.pp1094-1106
Jeerapong Srivichai , Kittaya Somsai , Nithiroth Pornsuwancharoen
This research investigates the modeling and analysis of a three-phase boost rectifier for DC fast charging systems for electric vehicles (EVs). A mathematical model validated with MATLAB/Simulink simulations examines system behavior under various conditions. Performance analysis in the abc and dq coordinate systems reveals high consistency with theoretical calculations. The average voltage in the dq frame was found to be vd was 685 V and vq was 0 V, with a discrepancy of less than 0.1% from calculated values. However, the average current in the dq frame showed discrepancies due to cross-coupling effects and circuit impedance. Simulations reported id was 211.50 A and iq was 93.50 A, compared to calculated values of id was 151.97 A and iq was 0 V. For the output DC voltage and current, the average values were 983.05 V and 98.31 A, respectively. Three test cases were analyzed, consist of unbalanced three-phase conditions, voltage drops, and load step responses. Case 1 showed the highest total harmonic distortion (THD), Case 2 increased THD further, and Case 3 achieved the lowest THD, demonstrating improved stability under dynamic loads. These findings confirm the system’s minimal deviations from theoretical predictions, enhanced voltage quality, harmonic mitigation, and improved charging efficiency for EV fast charging applications.
Volume: 16
Issue: 2
Page: 1094-1106
Publish at: 2025-06-01

Demographic determinants of patronage of medicine hawkers by commercial vehicle passengers in Ghana

10.11591/ijphs.v14i2.24606
Joy Ato Nyarko , Kofi Osei Akuoko , Jonathan Mensah Dapaah , Nana Yaa Serwaa Akuoko , Egwolo Perpetual Iyengunmwena
Medicine hawking is one of the major public health problems of the global south. This present study examined the demographic determinants of patronage of the services of medicine hawkers among commercial vehicle passengers in Kumasi, Ghana. A cross-sectional study was carried out from February 2022 to March 2022 at major bus terminals in Kumasi. Data were descriptively and inferentially analysed. The survey revealed that 55% of the respondents had bought medicines from medicine hawkers before. There was a significant relationship between having bought from a medicine hawker before and the intention to buy from them again in the future. Also, age, religion and education contributed significantly to patronising the services of medicine hawkers. We recommend that government intensifies its public health education on the implications of seeking health care services from these medicine hawkers.
Volume: 14
Issue: 2
Page: 912-918
Publish at: 2025-06-01
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