Garuda - Garba Rujukan Digital

p-Index From 2019 - 2024

0.61

P-Index

This Author published in this journals

All Journal International Journal of Electrical and Computer Engineering International Journal of Power Electronics and Drive Systems (IJPEDS) Perfecting a Video Game with Game Metrics Telecommunications, Computers, and Electricals Engineering Journal

Junaidi Junaidi

Tanjungpura University

Author-ID : 2380739

Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Energy Engineering

Published : 6 Documents Claim Missing Document

Claim Missing Document

Articles

Battery Control Strategy for Hybrid Power Generation Systems Junaidi Junaidi; Ayong Hiendro; Yohannes M. Simanjuntak
International Journal of Electrical and Computer Engineering (IJECE) Vol 2, No 4: August 2012
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (434.272 KB)

Standalone diesel generators (DGs) are widely utilized in remote areas in Indonesia. Some areas use microhydro (MH) systems with DGs backup. However, highly diesel fuel price makes such systems become uneconomical. This paper introduces hybrid photovoltaic (PV)/MH/ DG/battery systems with a variable charging strategy method to minimize the diesel fuel consumption. The method is applied to control the state of charge (SOC) level of the battery based on its previous level and the demand load condition to optimize the DG operation. The optimal operation shows that the hybrid PV/MH/DG/battery with the variable charging strategy needs less fuel consumption than PV/MH/DG and MH/DG systems.DOI:http://dx.doi.org/10.11591/ijece.v2i4.556

Optimum Renewable Fraction for Grid-connected Photovoltaic in Office Building Energy Systems in Indonesia Ayong Hiendro; Ismail Yusuf; F. Trias Pontia Wigyarianto; Kho Hie Khwee; Junaidi Junaidi
International Journal of Power Electronics and Drive Systems (IJPEDS) Vol 9, No 4: December 2018
Publisher : Institute of Advanced Engineering and Science

This paper analyzes influences of renewable fraction on grid-connected photovoltaic (PV) for office building energy systems. The fraction of renewable energy has important contributions on sizing the grid-connected PV systems and selling and buying electricity, and hence reducing net present cost (NPC) and carbon dioxide (CO2) emission. An optimum result with the lowest total NPC for serving an office building is achieved by employing the renewable fraction of 58%, in which 58% of electricity is supplied from the PV and the remaining 42% of electricity is purchased from the grid. The results have shown that the optimum grid-connected PV system with an appropriate renewable fraction value could greatly reduce the total NPC and CO2 emission.

Optimization of SHEPWM cascaded multilevel inverter switching patterns Ayong Hiendro; Ismail Yusuf; Junaidi Junaidi; Trias Pontia Wigyarianto; Yohannes M Simanjuntak
International Journal of Power Electronics and Drive Systems (IJPEDS) Vol 11, No 3: September 2020
Publisher : Institute of Advanced Engineering and Science

Selective harmonic elimination (SHE) is an efficient method to eliminate low-order selected harmonics. However, due to nonlinearity in the problems, many optimization techniques give unsatisfied performances in finding optimum switching angles for the SHE. This paper proposes a modified moth-flame optimization algorithm to eliminate selective harmonics in cascaded multilevel inverters. The optimization algorithm is employed to find sets of optimum switching angles for cascaded 5-level, 7-level, and 9-level inverters. The results have shown that modified moth-flame optimization is beneficial in finding optimum switching angles. It performs better than moth-flame optimization (MFO) and differential evolution (DE) algorithms. The optimum switching angles are applied to generate switching pulses for a cascaded 9-level inverter to demonstrate the algorithm’s accuracy. As a result, the low-order harmonics are entirely removed from the ac output voltage of the inverter.

Multiobjective H2/H∞ Control Design with Regional Pole Constraints Hardiansyah Hardiansyah; Junaidi Junaidi
TELKOMNIKA (Telecommunication Computing Electronics and Control) Vol 10, No 1: March 2012
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/telkomnika.v10i1.765

This paper presents multiobjective H2/H∞ control design with regional pole constraints. The state feedback gain can be obtained by solving a linear matrix inequality (LMI) feasibility problem that robustly assigns the closed-loop poles in a prescribed LMI region. The proposed technique is illustrated with applications to the design of stabilizer for a typical single-machine infinite-bus (SMIB) power system. The LMI-based control ensures adequate damping for widely varying system operating conditions. The simulation results illustrate the effectiveness and robustness of the proposed stabilizer.

THE STUDY ON VOLTAGE IMPROVEMENT OF MEDIUM VOLTAGE OVERHEAD WIRE BY TRANSFORMER TAPPING SELECTION Deksa Mahesa Cipy Sambira; Junaidi Junaidi; Rudi Kurnianto
Telecommunications, Computers, and Electricals Engineering Journal (TELECTRICAL) Vol 2, No 1: June 2024
Publisher : Faculty of Engineering, Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/telectrical.v2i1.78891

One of the problems found in the power system is the change or decrease in voltage caused by the power plant center being far from the load center. This study aims to determine the condition of the voltage drop on the Husein Hamzah Feeder and how the use of tap transformers to reduce the voltage drop. The calculation process is simulated using ETAP 19.0.1 software. Based on the simulation results, in the existing condition, the percentage of voltage at the medium voltage bus still meets PLN standards, while at the low voltage bus there are still buses below the standard with a percentage of voltage drop of 3.48%. After making improvements by increasing the transformer tap, the voltage drop value on the bus has decreased to 3.42%. It can be concluded that after making improvements by increasing the transformer tap, the voltage percentage on the rectifier has met SPLN No.72 of 1987 where the percentage of voltage drop does not exceed 5% of the working voltage.

STUDY OF THE EFFECT OF SCIG BASED VARIABLE SPEED WIND POWER PLANT ON DISTRIBUTION SYSTEM VOLTAGE AND POWER LOSSES Muhammad Wisnu Satriyo Agni; Rudy Gianto; Junaidi Junaidi
Telecommunications, Computers, and Electricals Engineering Journal (TELECTRICAL) Vol 2, No 1: June 2024
Publisher : Faculty of Engineering, Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/telectrical.v2i1.76141

Wind power plants are a type of power plant that uses wind energy as the main source to produce electrical energy. This research analyzes the effect of wind power generation on voltage and power losses under light load, peak load, and average load conditions in the distribution system. The data that will be used is 33 bus distribution system data and distribution system network data. Then thoroughly calculate the voltage and power losses of the distribution system using MATLAB software version R2016A. This research obtained the results that the lowest voltage in the 33 bus distribution system occurred on bus 18, so that bus would be connected to the PLTB. As the mechanical power of the turbine increases, the system voltage profile for various load conditions improves. In the distribution system, before the PLTB was connected, the best voltage profile at light load was 0.9378 pu and the worst voltage profile at peak load was 0.8671 pu. After the system is connected to the PLTB, the light load becomes 0.9466 pu, the peak load becomes 0.8771 pu, and the average load becomes 0.9131 pu. By connecting the system with PLTB, power losses at light loads are reduced to 184.8918 kW (Pm = 2.0200 pu), peak loads are reduced to 807.7297 kW (Pm = 3.6880 pu), and average loads - the average decreases to 437.8619 kW (Pm = 2.7709 pu).

Co-Authors Ayong Hiendro Deksa Mahesa Cipy Sambira F. Trias Pontia Wigyarianto Hardiansyah Hardiansyah Ismail Yusuf Kho Hie Khwee Muhammad Wisnu Satriyo Agni Rudi Kurnianto Rudy Gianto Trias Pontia Wigyarianto Yohannes M Simanjuntak Yohannes M. Simanjuntak

Title

Found 6 Documents
Search

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Title Search

Found 6 Documents Search

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Title

Found 6 Documents
Search