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All Journal Jurnal Teknologi Elektro JEEMECS (Journal of Electrical Engineering, Mechatronic and Computer Science) Journal of Engineering and Scientific Research (JESR) Jambura Journal of Electrical and Electronics Engineering Jurnal Riset Rekayasa Elektro Abdimas: Jurnal Pengabdian Masyarakat Universitas Merdeka Malang International Journal of Electrical, Energy and Power System Engineering (IJEEPSE) BERNAS: Jurnal Pengabdian Kepada Masyarakat Pelita: Jurnal Pengabdian kepada Masyarakat
Reza Sarwo Widagdo
Department Of Electrical Engineering, Faculty Of Engineering, Universitas 17 Agustus 1945 Surabaya
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Design and Implementation Six-Steps Inverter Using Fuzzy Sugeno in Permanent Magnet Synchronous Machines Reza Sarwo Widagdo; Santoso; Izzah Aula Wardah
International Journal of Electrical, Energy and Power System Engineering Vol. 5 No. 3 (2022): The International Journal of Electrical, Energy and Power System Engineering (I
Publisher : Electrical Engineering Department, Faculty of Engineering, Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/ijeepse.5.3.67-72

Abstract

Controlling the speed of the permanent magnet synchronous machines plays an essential role in the industrial process and keeps the permanent magnet synchronous machines running quickly and efficiently. Even if the load changes, the rate speed of the permanent magnet synchronous machines should be adjusted to a constant speed. An excellent permanent magnet synchronous machines speed control system must respond quickly and accurately. However, in practice, rarely find a permanent magnet synchronous machines controlled to achieve a certain speed. This research presents an analysis of fuzzy logic control using seven membership functions for speed control of permanent magnet synchronous machines. Rotor speed control is performed on the rotor voltage by changing the duty cycle value. This voltage change affects the torque of the engine. Adjust the speed by changing the input voltage of the permanent magnet synchronous machines with the six-steps inverter. In the open-loop test (without control), the system cannot reach the desired setting and will only run after input from the throttle. In a closed loop (using fuzzy logic control), the system can achieve the desired setting in 90 seconds even if the setpoint is changed and can move to the setpoint.
Modelling and Analysis of Ziegler-Nichols and Chien-Hrones-Reswick Tuning PID on DC Motor Speed Control Reza Sarwo Widagdo; Balok Hariadi; Kukuh Setyadjit
Jurnal Teknologi Elektro Vol 14, No 1 (2023)
Publisher : Electrical Engineering, Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/jte.2023.v14i1.005

Abstract

There have been many studies on the methods used to control DC motors, one of which is the proportional-integral-derivative (PID) control method. The tuning procedure is carried out by trial and error whose results are not necessarily correct, to overcome this problem an alternative is needed that can achieve a better and faster value for the tuning process. Our contribution is explained the conventional PID (Ziegler - Nichols) and modificated PID (Chien - Hrones - Reswick). We also analyze the response of the speed-controlled DC motor using the Proportional, Integral, and Derivative parameters obtained from the tuning method described above. We also discuss the advantages and disadvantages of each formula of these methods. Implementing both methods using a Matlab, creating a more convenient and user-friendly environment for engineering students and practicing engineers to better understand the formulas of his PID controller tuning method.
Installation of solar power plant as power supply for street lighting in livestock area Reza Sarwo Widagdo; Puji Slamet; Aris Heri Andriawan; Izzah Aula Wardah
Abdimas: Jurnal Pengabdian Masyarakat Universitas Merdeka Malang Vol 8, No 2 (2023): May 2023
Publisher : University of Merdeka Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26905/abdimas.v8i2.9732

Abstract

Sajen Village, in Pacet District, Mojokerto, already has a Village-Owned Enterprise (BUMDes) that is primarily involved in the management of livestock and agricultural products because has village treasury land. Farms with cows and goats are administered by cooperatives of farmers. Even though there is always a livestock supervisor on guard, one of the farm locations closest to the village hall uses makeshift lighting and has a low level of security. This is due to the limited electrical energy which is still sourced from the village hall. In addition, human resources in Sajen village also need to improve their soft skills and hard skills to develop the village and keep abreast of current issues. This initiated the idea of building an independent power plant in the livestock area as a useful energy source for village lighting and security. Off-grid system was built in the livestock area and has been successfully utilized to supply energy for the lighting and security sector in the livestock area. Off-grid systems refer to energy sources that are different from those used by the state power utility. Solar power plant also contributes a percentage of clean energy use in village areas and can be a pilot for further development. 
Analysis and Mitigation of Harmonics Distortion with Optimization Capacitor Banks and Single-Tuned Passive Filters Reza Sarwo Widagdo; Kukuh Setyadjit; Izzah Aula Wardah
Jambura Journal of Electrical and Electronics Engineering Vol 5, No 2 (2023): Juli - Desember 2023
Publisher : Electrical Engineering Department Faculty of Engineering State University of Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37905/jjeee.v5i2.19016

Abstract

Electrical system power supplies always require a completely sinusoidal voltage signal. But for a variety of reasons, utilities often struggle to maintain these desired conditions. Deviations of voltage and current waveforms from a sinusoidal form are called harmonic distortions. Harmonic distortions in power networks are increasing due to the widespread use of non-linear loads. In this article we will analysis at a single-tuned passive filter and optimization using a capacitor bank. Load-current analysis determines the efficiency of the filter application by calculating the load bus voltage and total harmonic distortion (THD). To simulate the work, the Electrical Transient Analyzer Program (ETAP) software was used. This system was created specifically for this simulation and does not represent a real system. This model tests the effects of injecting harmonic currents into a power grid through a variable speed drive (VFD). The filter is attenuated with a capacitor bank.
Discrete Wavelet Transform Applied to 3-Phase Induction Motor for Air Gap Eccentricity Fault Diagnosis Reza Sarwo Widagdo; Ratna Hartayu; Balok Hariadi
JEEMECS (Journal of Electrical Engineering, Mechatronic and Computer Science) Vol 6, No 2 (2023): August 2023
Publisher : Merdeka Malang University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26905/jeemecs.v6i2.10707

Abstract

Induction motors consume about 60% of the energy in industry, indicating that they are an important part of the industry. Despite their sturdy construction, these induction motors are often susceptible to damage from prolonged use without maintenance. Bearing failure accounts for up to 40% of all failures and can result in serious engine damage if not treated promptly. For effective operation, this failure must be continuously monitored, otherwise it may cause serious damage to the induction motor. Normal vibration monitoring is difficult as it requires the use of expensive sensors. To detect and localize these faults, a new method of performing leakage flux analysis is widely used. In this paper, failure due to gap eccentricity is predicted by decomposing the waveform of the leakage flux spectrum using a discrete wavelet transform. The proposed method was evaluated based on the leakage flux obtained from a 1.5 kW induction motor. Experimental results have confirmed the effectiveness of the method used to detect eccentricity failures.
Prediction of Age Loss on 160 KVA Transformer PT. PLN ULP Kenjeran Surabaya using The Linear Regression Method Reza Sarwo Widagdo; Aris Heri Andriawan
Jurnal Riset Rekayasa Elektro Vol 5, No 2 (2023): JRRE VOL 5 NO 2 DESEMBER 2023
Publisher : LEMBAGA PUBLIKASI ILMIAH DAN PENERBITAN, UNIVERSITAS MUHAMMADIYAH PURWOKERTO

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30595/jrre.v5i2.18140

Abstract

Distribution transformer is one of the important equipment in the distribution of electricity to consumers. The electricity demand increases every year, so that the transformer works optimally, it must also be considered regarding the loading. According to IEC 354 if the transformer is loaded stable 80% with conditions around 20℃ and the winding temperature is 98℃, but if the ambient temperature is more than 20℃ then the age of the transformer will decrease. With an average loading of 71.75%, based on the calculation that the predicted useful age of the 160 KVA distribution transformer in 2027 will have an age loss index of 1.1 p.u, so it is estimated that the remaining age of the distribution transformer is 12 years and 7 months. Analysis using a statistical approach assisted by SPSS software was also carried out to see how much influence the loading has on the age loss of the transformer.
Harmonic Mitigation in Microgrid to Improve Power Quality Reza Sarwo Widagdo; Aris Heri Andriawan; Ratna Hartayu
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.
Analysis of Losses Due to Load Unbalance in a 2000 kVA Transformer at Supermall Mansion 2 Tower Tanglin Surabaya Reza Sarwo Widagdo; Aris Heri Andriawan
Journal of Engineering and Scientific Research Vol. 5 No. 2 (2023)
Publisher : Faculty of Engineering, Universitas Lampung Jl. Soemantri Brojonegoro No.1 Bandar Lampung, Indonesia 35141

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jesr.v5i2.144

Abstract

The load unbalance causes a neutral current, the current flowing in the neutral conductor will cause an increase in losses in the transformer. The greater the losses incurred, the efficiency and reliability of the transformer will decrease. Based on this, a study was conducted on analyzing the losses on distribution transformers at Supermall Mansion 2 Tower Tanglin which aims to determine the percentage value of transformer loading, the value of transformer imbalance, the value of transformer losses, and the value of transformer efficiency. This is done so that the value of the installed transformer does not exceed the applicable SPLN value. During the measurement, it was found that the percentage value of the transformer loading was 38.88% during the daytime and 48.89% at night (maximum SPLN 80%, minimum 40%). The load unbalance value is 11.66% during the daytime and 10.33% at night (SPLN is categorized as good if < 10%). Copper losses (Pcu) are 91.3 kW during the daytime and 94.2 kW at night. The value of losses due to neutral currents is 0.134 kW with a percentage of 0.0071% during the daytime and 0.173 kW with a percentage of 0.0090% at night. The percentage of the current value in the neutral conductor is 26.36% during the day and 24.04% at night (SPLN is categorized as good if < 20%).
Assessment of Power System Equipment to Enhance the Power Quality at Dr. Saiful Anwar General Hospital Malang Reza Sarwo Widagdo; Puji Slamet; Aris Heri Andriawan; Balok Hariadi; Izzah Aula Wardah; Elvianto Dwi Hartono
BERNAS: Jurnal Pengabdian Kepada Masyarakat Vol. 5 No. 2 (2024)
Publisher : Universitas Majalengka

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31949/jb.v5i2.8945

Abstract

Electrical conditions in the operations building and substation of the regional general hospital Dr. Saiful Anwarexperienced a power cut at optimum load, resulting in the power supply being solely obtained from the generator. The aim of the assessment carried out was to delve deeper into power quality, electrical performance, and other supporting equipment to maximize service to patients based on the assessment findings. The assessment stages utilized were the initial assessment stage and the detailed assessment stage. The analysis stages were conducted under steady-state load conditions. The assessment process involved field measurements, observations, and interviews with technical staff at the general hospital Dr. Saiful Anwar. Field measurements utilized Ammeters, Voltmeters, and Harmonic Analyzers to ascertain voltage imbalances, current imbalances, and harmonic content in SDP panels on each floor of the operations building, as well as to evaluate UPS components as backup power and stabilizers for electrical equipment. The results of observations and direct measurements in the field revealed several issues, including a current harmonic content of up to 50% on the 6th floor of the operations building (OK6) and in the Linac room, along with various other findings related to voltage and current imbalances in the secondary substation and certain components. The UPS, alike to the battery and filter capacitor inside, requires replacement. Additionally, regarding the grounding value, which currently stands at 3 Ohms, it is imperative to incorporate a parallel grounding system to bring the value below 1 Ohm to mitigate the risk of leakage current occurrences.
Solar Panel Education as a Renewable Energy System for Students of SMAN 20 Surabaya Reza Sarwo Widagdo; Puji Slamet; Balok Hariadi; Ratna Hartayu; Izzah Aula Wardah
Pelita: Jurnal Pengabdian kepada Masyarakat Vol. 4 No. 1 (2024): Pelita: Jurnal Pengabdian kepada Masyarakat
Publisher : Perkumpulan Kualitama Edukatika Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51651/pjpm.v4i1.483

Abstract

Introduction of Solar Panels as a Renewable Energy System for high school students in Surabaya City. In particular, the city of Surabaya can be an effort to support the realization of the Sustainable Development Goals (SDGs) program. The team has held online discussions with partners, namely SMAN 20 Surabaya to carry out the introduction of solar panels as a renewable energy system to students at SMAN 20 Surabaya. The purpose of community service is to socialize the use of solar power plants through learning activities (education) and solar power plants training for school students and teachers. The method used in this activity is divided into three stages. In the first stage, field observations were carried out to find problems related to the availability of electrical energy in schools. In the second stage, the implementation of community service includes the delivery of solar panel material with lectures, demonstrations, and the design of solar power plants systems at schools. In the third stage, it is an evaluation or feedback stage by giving questionnaires to participants. The results of this community service activity provide information on understanding solar panels and batteries in the good category. Practical activities need to be taught to student, so solar power plants teaching aids are needed at the school. The team made an educational activity for students, namely a demo of converting solar energy into electrical energy. The implementation of this community service has been carried out well.
Co-Authors Ardianik Ardianik Aris Heri Andriawan Aris Heri Andriawan Aris Heri Andriawan, Aris Heri Balok Hariadi Balok Hariadi Balok Hariadi Elvianto Dwi Hartono Gatut Budiono Hadi Tasmono Imam Suri Tauladan Izzah Aula Wardah Kukuh Setyadjit Kukuh Setyadjit Kusmiyati Kusmiyati Puji Slamet Puji Slamet Puji Slamet Ratna Hartayu Santoso Wendi Antonius S Nababan