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INDONESIA
Jurnal EECCIS
Published by Universitas Brawijaya
ISSN : 19783345     EISSN : 24608122     DOI : -
Core Subject : Engineering,
Engineering
EECCIS is a scientific journal published every six month by electrical Department faculty of Engineering Brawijaya University. The Journal itself is specialized, i.e. the topics of articles cover electrical power, electronics, control, telecommunication, informatics and system engineering. The languages used in this journal are Bahasa Indonesia and English.
Arjuna Subject : -
Articles 380 Documents
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Combination of Historical Stock Data and External Factors In Improving Stock Price Prediction Performance Sjahrunnisa, Anita; Suciati, Nanik; Hidayati, Shintami Chusnul
Jurnal EECCIS (Electrics, Electronics, Communications, Controls, Informatics, Systems) Vol. 18 No. 2 (2024)
Publisher : Faculty of Engineering, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/jeeccis.v18i2.1707

Abstract

Stock price prediction continues to be a major focus for investors today, some previous studies often focus on technical analysis using historical stock price data and ignore external factors that can affect stock prices. The purpose of this research is to overcome the shortcomings of previous research by creating a stock price prediction model that combines historical stock data consisting of date, high, low, open, close, adj close, volume and external factors such as days, interest rates, inflation, and dividends. The data used came from 33 companies from 11 industrial sectors in Indonesia for 2267 trading days and evaluated the prediction performance using MSE, MAPE and R-squared. The results show a significant improvement in the evaluation metrics when external factors are added. This shows the importance of such factors in improving the prediction analysis and increasing the reliability of the prediction model. This approach is expected to not only overcome the limitations of traditional methods but also utilize a combination of deep learning and machine learning to improve prediction accuracy. Thus, this research not only provides new insights in the field of financial analysis but also provides new insights and solutions for investors to make more informed and less risky decisions.
One Pulse Vector Control Inverter Control Design for Fast Train Traction Motor Torque Control Pramudita Pamungkas; Mochammad Rusli; Wijono
Jurnal EECCIS (Electrics, Electronics, Communications, Controls, Informatics, Systems) Vol. 18 No. 2 (2024)
Publisher : Faculty of Engineering, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/jeeccis.v18i2.1712

Abstract

Current technology is increasingly developing, one of which is inverter control for high-speed train traction motor drives. Currently, the train driver is an AC electric motor. Inverters typically operate in the high-speed region. In this paper, it aims to drive the speed rotation of a 3-phase AC motor. The inverter is used to control the rotational speed of the motor, the vector control provides control of the speed and torque of the motor load for the 3 phase ac motor running at high speed. The vector control design is with the Arduino microcontroller program. The design of the inverter is in the form of a module that contains several components, namely IC drivers, resistors, mosfets, capacitors. The results of the PWM inverter were obtained in a waveform with a voltage of 4.72 volts, a frequency of 224.0 Hz and a duty cycle of 33.3%. The results of this study show the variation of the rotational speed of the motorcycle, the rotational speed of the motor with a value of 360 RPM the load torque response shows a value of 72.8 Nm, to the rotational speed of the motor of 960 RPM, the load torque response shows a value of 19.6 Nm. Based on the results of the inverter control research on motor torque control with the vector control method, the load torque response is able to follow the variation in the speed of rotation of the motor. The higher the rotational speed of the motorcycle, the lower the load torque respons.
Discrete Implementation of a PI Controller for Three-Phase PWM Rectifier Nurwati, Tri; Gradianto, Gasa; Siswoyo, Bambang; Bashir Mosaddegh; I Nyoman Wahyu Satiawan
Jurnal EECCIS (Electrics, Electronics, Communications, Controls, Informatics, Systems) Vol. 18 No. 2 (2024)
Publisher : Faculty of Engineering, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/jeeccis.v18i2.1666

Abstract

Rectifiers are becoming more prevalent in a wide range of applications, including power supplies for microelectronics, household electrical devices, battery charging, and power conversion in high-voltage direct current (HVDC) transmission systems. Conventional rectifiers often employ uncontrolled diodes, which have the drawback of generating a fixed output voltage that cannot be modified. There is a requirement for a regulated rectifier, specifically a three-phase PWM Rectifier that transforms AC voltage into DC voltage with an output voltage that surpasses the input voltage and can be modified as per requirements. This study explores the comparison between s-domain and z-domain PI controller designs in the context of controlling a three-phase pulse width modulation (PWM) rectifier. Applying the dual-closed-loop control technique with the pole-zero cancellation approach, we can calculate the PI parameters for controlling the current and voltage in the circuit. The values of the parameters are as follows: K_pc = 4, K_ic = 100, K_pv = 0.097, and K_iv = 4.85. Applying the forward Euler method to transform the PI controller from the s domain to the z domain. The test results for the PWM Rectifier PI controller were conducted in both the s-domain and z-domain. As per the setpoint, a three-phase voltage source with a value of 220 Volts was used, resulting in a stable DC voltage output of 600 Volts.
Design of Online Electric Power Monitoring For Street Vendors Sri Rahayu, Endang; Puteri Nurul Magfirah; Reza Diharja
Jurnal EECCIS (Electrics, Electronics, Communications, Controls, Informatics, Systems) Vol. 18 No. 2 (2024)
Publisher : Faculty of Engineering, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/jeeccis.v18i2.1684

Abstract

Street vendors are merchants who sell their goods on the sidewalk in front of shops or along the roadside. The common selling locations are typically on the front porch of a shop, and they obtain electricity by paying a rental fee to the owner. Owners of these shopfront spaces, providing the electrical supply, still employ conventional payment systems based on agreements between the owner and the user. The advancement of Internet of Things (IoT) technology has begun to support automatic and more accurate power monitoring systems. The objective of this research is to develop an online power monitoring system for street vendors based on RFID sensors and Telegram. It relies on the ESP32 microcontroller as the control system and the PZEM-004T sensor to measure current, voltage, and total power consumption. The implementation results show a measurement accuracy level of 99.1% for voltage, 99.66% for current, 91% for power, and 100% for energy. Purchasing, recharging, and monitoring of electrical energy were successfully conducted through the Telegram Bot. Additionally, the Telegram Bot successfully sends alerts in case of power leaks and when the electricity token is running out. The error rate in the measurement and monitoring of electrical energy used in the system is 0%.
Utilizing the All-terrain Capable Mars Rover as Robotic Platform for Field Application in Tech-based Smart Agriculture Aula, Abqori; Syaifurrahman; Fitriah
Jurnal EECCIS (Electrics, Electronics, Communications, Controls, Informatics, Systems) Vol. 18 No. 2 (2024)
Publisher : Faculty of Engineering, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/jeeccis.v18i2.1690

Abstract

NASA’s explorer robot rovers were primarily famous for its capability of exploring the rough and unknown terrain of planet Mars. The main suspension system of the rover has been an attraction for robotic enthusiasts due to its simple yet effective design, the so-called rocker-bogie system. Since its launch, this suspension system has been further researched, explored, and developed for different purpose and area of application. This paper proposes the design and development of a robotic platform utilizing the mentioned capability of Mars rover to explore the uneven terrain of farming field usually found in local precincts. The proposed robot has 6, all-driven wheels. Using the six-wheeled driven robot platform, the proposed system is tasked to autonomously explore the farming field. It can be tasked for a variety of purposes, such as soil inspection, weather checking, general mapping, and sample extraction. A couple of prototypes are designed and built to evaluate the exploring capability, the sensor accommodation capacity, as well as the electrical and electronic required. Preliminary results show that the robot platform can perform well in roving uneven terrain and can accommodate a variety of sensors either placed inside its enclosure or placed on its robotic arm.
Systematic Literature Review: Optimizing Broiler Chicken Cage Temperature and Humidity Fidel Lusiana Putri; Deva Kurnia Setiawan; Arsmanda Adi Nugraha; Feddy Setio Pribadi; Rizky Ajie Aprilianto
Jurnal EECCIS (Electrics, Electronics, Communications, Controls, Informatics, Systems) Vol. 18 No. 3 (2024)
Publisher : Faculty of Engineering, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/jeeccis.v18i3.1694

Abstract

Broiler production is highly dependent on environmental conditions, especially temperature and humidity in the cage. This research is a Systematic Literature Review that uses the PRISMA method to optimize the temperature and humidity of broiler cages. A total of 202 journals were found through Google Scholar and other repositories, with an additional 16 journals manually. After filtering, 38 journals were selected based on publication year 2019-2024. From the review of the selected literature, five research questions were derived that led to new understanding and solutions to the problems in the research topic. The results show that temperature and humidity significantly impact broiler performance, including health, welfare, and productivity. An IoT-based monitoring and control system is proven to assist with real-time monitoring and control of temperature and humidity, improving farm efficiency and effectiveness. Supporting factors for implementing this system include a friendly user interface, mobile applications, and real-time notifications. The application of IoT technology in broiler farming has the potential to provide significant benefits to farmers and the livestock industry as a whole.
A Review of Regenerative Braking Methods for Induction Motors in Electric Propulsion System Nur Sabilillah, Muhammad Rifqi; Rini Nur Hasanah; Muslim, Muhammad Aziz; Sulistiyanto, Nanang
Jurnal EECCIS (Electrics, Electronics, Communications, Controls, Informatics, Systems) Vol. 18 No. 3 (2024)
Publisher : Faculty of Engineering, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/jeeccis.v18i3.1696

Abstract

This paper provides a comprehensive review of regenerative braking methods for induction motors utilized in electric propulsion systems. Regenerative braking is a crucial technology for enhancing the energy efficiency of electric vehicles (EVs) and hybrid electric vehicles (HEVs) by converting kinetic energy back into electrical energy during braking. The review focuses on several regenerative braking techniques, including self-excited regenerative braking using capacitors and inverter-based regenerative braking. By evaluating the efficiency, cost-effectiveness, and practical applications of these methods, the paper identifies the strengths and weaknesses of each approach. Additionally, recent advancements in the field are discussed, along with suggestions for future research directions to optimize energy recovery in electric propulsion systems. The goal is to provide valuable insights for engineers and researchers working towards the development of more efficient and cost-effective regenerative braking systems, ultimately contributing to the advancement of electric and hybrid vehicle technologies.
Evaluation of Cross-Coupling Decoupling in Islanded Microgrid Control with Inductor Current Feed-Forward Technique Olayanju, Sunday; Dahunsi, Folasade Mojisola; Ponnle, Akinlolu Adediran
Jurnal EECCIS (Electrics, Electronics, Communications, Controls, Informatics, Systems) Vol. 18 No. 3 (2024)
Publisher : Faculty of Engineering, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/jeeccis.v18i3.1740

Abstract

To control the voltage source inverter in an islanded microgrid, the d-q reference frame is employed chiefly because of its ability to model inverter's dynamic models accurately. It allows the use of a simple proportional-integral controller for control purposes. However, its use is plagued with the cross-coupling terms introduced by the transformation into the d-q frame in the inner current and outside voltage control loops. This paper presents stepwise design and modelling of the inverter dynamics in the d-q reference frame. The systematic algebraic elimination method with inductor current feed-forward was employed for decoupling cross-coupling terms in the current and voltage loop controller design. The method's effectiveness was evaluated in the voltage and current control; overshoots and distortions resulting from load change were better mitigated. Simulation results were presented for evaluating the controller performance in cross coupling terms.
Performance Analysis of OFDM under AWGN and Rayleigh Fading Channels Based on Software Defined Radio Arum Dimarsasi, Ivana; Saptono, Rachmad; Syirajjudin, Muhammad
Jurnal EECCIS (Electrics, Electronics, Communications, Controls, Informatics, Systems) Vol. 18 No. 3 (2024)
Publisher : Faculty of Engineering, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/jeeccis.v18i3.1748

Abstract

Orthogonal Frequency Division Multiplexing (OFDM) is a very efficient and popular modulation technique in modern wireless communication systems. OFDM offers advantages in terms of spectrum efficiency, resistance to multi-path interference, and is able to support high data rates. This OFDM system uses the concept of Software Defined Radio (SDR) because it is able to implement directly with the help of USRP B210 hardware. The OFDM system consists of a transmitter and receiver that are processed by digital signal processing to encode, decode, and modulate data. This study uses GNU Radio software as a transmitter and receiver model. The purpose of this study is to compare the performance of real-time data transmission through the AWGN (Additive White Gaussian Noise) and Rayleigh Fading channels. The results of the study show that the performance of the OFDM system built, namely the use of BPSK modulation on the AWGN channel has the best performance with the lowest BER results of 0.376 and SNR 14 dB.
Modification of P&O Method on MPPT with PI Controller to Reduce Power Oscillation during Steady-State Condition Habibah, Nisrina Rania; Nur Hasanah, Rini; Abidin, Zainul
Jurnal EECCIS (Electrics, Electronics, Communications, Controls, Informatics, Systems) Vol. 18 No. 3 (2024)
Publisher : Faculty of Engineering, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/jeeccis.v18i3.1749

Abstract

This paper describes an improvement of the Perturb and Observe (P&O) method for maximum power-point tracking (MPPT) on a photovoltaic (PV) cell generating system. The improvement is achieved using a reference voltage () value to respond to perturbation and calculates the power change based on the response. The magnitude of is determined using the reference voltage change . A large will result in a faster tracking but increasing oscillations during steady-state conditions, while a small will reduce oscillations but slowing down the MPPT response. An adaptive value is required to reduce the oscillations which have potential to degrade the efficiency of the PV cell output. A proportional-integral (PI) controller is explored in this paper in determining the most appropriate value. The results showed that oscillations around the MPP point could be reduced by 99%.

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