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All Journal Jurnal Teknologi Elektro Jurnal Elementer (Elektro dan Mesin Terapan) RELE: Rekayasa Elektrikal dan Energi Jurnal Teknik Elektro Jurnal Riset Rekayasa Elektro Journal of Applied Electrical Engineering BEES: Bulletin of Electrical and Electronics Engineering Jurnal Teknik Informatika dan Elektro (JURTIE)
Widagdo, Reza Sarwo
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Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Electrical & Electronics Engineering Engineering Mechanical Engineering

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Journal : Jurnal Teknologi Elektro

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Unbalanced Voltage Detection with Measurement Analysis Current Signature (MCSA) in 3-Phase Induction Motor Using Fast Fourier Transform (FFT) Widagdo, Reza Sarwo; Hermawati, Fajar Astuti; Hariadi, Balok
Jurnal Teknologi Elektro Vol 15, No 2 (2024)
Publisher : Electrical Engineering, Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/jte.2024.v15i2.003

Abstract

This paper presents a computational tool for detecting unbalanced voltage supplies in induction motors. For real-time applications, a technique based on the Fast Fourier Transform (FFT) was used to compute the desired component frequency. A Labview virtual instrument was used to implement the computer algorithm. When supply voltage unbalance appears identical, fault diagnosis using current signature analysis becomes more difficult. The detection percentage is calculated in the following conditions: balanced voltage, under voltage (10%), over voltage (5%), and mixed voltage (UV 5% + OV 5%). The unbalanced voltage waveforms are then analyzed using the classical Fast Fourier Transform (FFT). The results were detected at frequencies of 25 Hz and 75 Hz with a high amplitude of -30 db, when compared with healthy conditions at this frequency there was no spike in amplitude values. So by using the MCSA method with the fast Fourier transform approach analysis, it was successful in detecting voltage unbalance disturbances in 3 phase induction motors.
Harmonic Mitigation in Microgrid to Improve Power Quality Widagdo, Reza Sarwo; Andriawan, Aris Heri; Hartayu, Ratna
Jurnal Teknologi Elektro Vol 15, No 1 (2024)
Publisher : Electrical Engineering, Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/jte.2024.v15i1.003

Abstract

Microgrids are a technology that is developing quite rapidly and is attracting world attention in facing the energy and pollution crisis. There are three types of microgrid structures: AC, DC, and AC-DC hybrid microgrid. Because it consists of an AC bus and a DC bus, AC-DC hybrid microgrids can connect more types of Distributed Generation (DG) and have smaller converter losses, making it more economical and reliable than other types of microgrids. Due to the use of nonlinear devices, harmonic distortion in microgrids is a problem that needs to be solved. In this research, the AC-DC hybrid microgrid system is simulated using ETAP software. Then the characteristics of the distribution of harmonics in the system obtained from harmonic load flow simulations are also analyzed. Following the installation of the passive filter, Bus 1 and Bus 2 now suitable to the IEEE Std standards 519-1992 for harmonic values. After the application of the filter, Bus 1 refer a THD of 1.32%, while Bus 2 indicate a THD of 0.84%. In addition, the Individual Harmonic Distortion (IHD) for Bus 1 has dropped below 3% at the 5th harmonic and below 1.5% at the 13th harmonic. Besides that, Bus 2 IHD has decreased to less than 3% at the 11th harmonic and less than 1.5% at the 13th harmonic.
Co-Authors Aris Heri Andriawan, Aris Heri Balok Hariadi, Balok Fajar Astuti Hermawati Gatut Budiono Hartayu, Ratna Medika, Aditya Surya Nasichin, Miftachun Prenata, Giovanni Dimas Puji Slamet, Puji Rafli, Syah Achmad Amar Tauladan, Imam Suri Ubaidillah, Muhammad Wijayanto, Viky