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All Journal Foristek Jurnal Ilmiah Teknik Mesin JURNAL NASIONAL TEKNIK ELEKTRO Sinkron : Jurnal dan Penelitian Teknik Informatika KACANEGARA Jurnal Pengabdian pada Masyarakat Scientific Journal of Mechanical Engineering Kinematika INAJEEE (Indonesian Journal of Electrical and Electronics Engineering) IJORER : International Journal of Recent Educational Research Jurnal Teknik Elektro (JTE) JEEE-U (Journal of Electrical and Electronic Engineering-UMSIDA) PROFICIO: Jurnal Pengabdian Masyarakat Journal of Vocational and Technical Education (JVTE) Hexatech: Jurnal Ilmiah Teknik Journal of Fuzzy Systems and Control (JFSC)
Rifqi Firmansyah
Universitas Negeri Surabaya
Aerospace Engineering Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mathematics Mechanical Engineering Social Sciences Transportation Other

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PERANCANGAN SISTEM AKUISISI DATA PEMAKAIAN LISTRIK 1 PHASA DAYA 1300 VA PADA RUMAH TINGGAL MENGGUNAKAN DATA LOGGER Jumiyatun, Jumiyatun; Ely, Muhammad Nasir; Sollu, Tan Suryani; Mansur, Khairunnisa; Fatmawati, Andi; Firmansyah, Rifqi
Foristek Vol. 15 No. 2 (2025): Foristek
Publisher : Foristek

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54757/fs.v15i2.838

Abstract

Electrical energy is one of the basic needs for humans today, almost every activity we do is inseparable from the use of electrical energy, the use of electrical energy must be paid according to the amount and duration of electricity use in electricity management authorized by state-owned companies, namely PT. PLN Persero using kWh meter. In the postpaid type kWh Meter (Kilo Watt Hours), we cannot know the amount of electrical power that has been used in real-time.This research aims to design a system that can acquire power consumption in kWh andpower consumption costs (Watts) real-time by utilizing the ACS712 current sensor and voltage sensor circuit as input current and voltageand then processed by Arduino Uno for processing. The data is in an application interface, then the usage data is stored automatically in the data base local by the MySQL application.The results of this study are by comparing the calculation of power consumption (Watt) and the nominal cost of electricity in anapplication interface. After the data is obtained, it can be concluded that the readings from input the current and voltage sensor in this system are not accurate and unstable, so that the comparison of the value by the kWh meter is 4.8 kWh with a nominal cost of Rp. 7,745.76, while in this system design the power value obtained is 9.08 kWh with a nominal usage fee of Rp. 14,652.39. Then the difference in value between the calculation of kWh and the design of this system is 4.28 kWh, with a nominal difference in the cost of using it of Rp. 6,906.63.
PEMANFAATAN PUBLISH OR PERISH DAN CHAT GPT UNTUK GURU SMK KETINTANG DALAM PENINGKATAN PENULISAN REFERENSI JURNAL Baskoro, Farid; I Gusti Putu Asto; Ismet Basuki; Unit Three Kartini; Ibrohim; Rifqi Firmansyah
Jurnal Pengabdian Masyarakat FKIP UTP Vol 7 No 1 (2026): PROFICIO : Jurnal Abdimas FKIP UTP
Publisher : FKIP UNIVERSITAS TUNAS PEMBANGUNAN SURAKARTA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36728/jpf.v7i1.5586

Abstract

Penelitian ini bertujuan untuk meningkatkan keterampilan penulisan referensi jurnal bagi guru SMK Ketintang Surabaya dengan memanfaatkan teknologi Publish or Perish dan Chat GPT. Kegiatan Pengabdian Kepada Masyarakat (PKM) yang dilakukan meliputi survei awal untuk mengidentifikasi kebutuhan peserta, pelatihan penggunaan teknologi untuk pencarian dan penyusunan referensi, serta sesi tanya jawab dan diskusi untuk memperdalam pemahaman. Hasil pelatihan menunjukkan peningkatan yang signifikan dalam berbagai aspek keterampilan. Sebelum pelatihan, pemahaman peserta tentang cara mencari referensi jurnal hanya mencapai 40%, namun setelah pelatihan meningkat menjadi 85%. Kemampuan menggunakan Publish or Perish dan menyusun referensi sesuai format sitasi juga meningkat dari 25% menjadi 80% dan dari 35% menjadi 90%, berturut-turut. Kepercayaan diri peserta dalam menulis referensi jurnal meningkat dari 30% menjadi 85%, serta keterampilan menggunakan Chat GPT untuk mengedit referensi meningkat dari 20% menjadi 75%. Hasil ini menunjukkan bahwa pelatihan berhasil mencapai tujuannya dan memberikan dampak positif dalam meningkatkan kualitas penulisan referensi jurnal bagi guru. Penggunaan teknologi dalam pendidikan terbukti efektif untuk mendukung pengembangan profesional guru dan meningkatkan kualitas pengajaran serta penelitian di lingkungan pendidikan.
RANCANG BANGUN SISTEM MONITORING KETINGGIAN AIR BERBASIS WIRELESS SENSOR NETWORK DI AGROWISATA BANJARSARI JOMBANG Muhammad Hildan Saputra; Sayyidul Aulia Alamsyah; Rifqi Firmansyah; Dwi Anggorowati Rahayu
JURNAL TEKNIK ELEKTRO Vol. 15 No. 1 (2026): JANUARI 2026
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/jte.v15n1.p13-19

Abstract

Pemantauan ketinggian air di Desa Banjarsari Kecamatan Bandarkedungmulyo Kabupaten Jombang masih dilakukan secara manual, sehingga tidak responsif terhadap perubahan cepat yang merugikan ekosistem perairan. Penelitian ini bertujuan mengembangkan sistem monitoring ketinggian air berbasis Wireless Sensor Network (WSN) dengan komunikasi LoRa. Sistem terdiri dari water level sensor, ESP32, modul LoRa E220-400T22D, dan dashboard web berbasis MQTT, dengan topologi komunikasi point-to-point yang sederhana dan efisien. Hasil pengujian menunjukkan sensor water level mencapai akurasi 96,54% dengan error 3,46%, komunikasi LoRa stabil hingga jarak 147 meter dengan RSSI optimal −34 dBm, dan dashboard menampilkan data real-time dengan latency rata-rata 110–200 ms. Sistem WSN-LoRa ini terbukti feasible dan reliable untuk monitoring ketinggian air real-time dan layak diterapkan sebagai solusi pengelolaan air sawah yang berkelanjutan.
PELACAKAN DAYA MAKSIMUM PADA PEM FUEL CELL MENGGUNAKAN PARTICLE SWARM OPTIMIZATION TERINTEGRASI INTERLEAVED BUCK-BOOST CONVERTER Pressa P. S. Saputra; Zainal Mustakim; Heri Ardiansyah; Rifqi Firmansyah
Scientific Journal of Mechanical Engineering Kinematika Vol 11 No 1 (2026): SJME Kinematika June 2026
Publisher : Mechanical Engineering Department, Faculty of Engineering, Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/sjmekinematika.v11i1.848

Abstract

This study proposes a Maximum Power Point Tracking (MPPT) method based on Particle Swarm Optimization (PSO) to enhance power extraction performance in Proton Exchange Membrane Fuel Cell (PEMFC) systems operating under dynamic and varying environmental conditions. The proposed method is designed to optimize the system's operating point to ensure that the power generated by the fuel cell is fully utilized. In this research, the PSO algorithm is integrated with an Interleaved Boost–Buck Converter (IBBC), which functions to reduce current ripple and improve the stability of the output power in the energy conversion system. This integration is expected to provide a faster and more efficient system response in adjusting to changes in operational conditions. One of the main challenges in implementing MPPT in PEMFC-based systems is the nonlinear characteristics of PEMFC itself, which are highly influenced by various external parameters such as operating temperature, hydrogen pressure, and membrane water content. Variations in these parameters can cause fluctuations in output voltage and current, making the maximum power point tracking process more complex. Therefore, an adaptive optimization method with good convergence ability is required. Simulation results demonstrate that the proposed PSO method achieves a tracking accuracy of up to 99.96% with a settling time of 2 seconds under varying membrane water content conditions. The PSO approach also outperforms the Fuzzy Logic and Cuckoo Search Algorithm (CSA) methods. These findings confirm that the integration of PSO and IBBC significantly improves both the accuracy and speed of MPP tracking in PEMFC systems.
Desain IMC - PID untuk kontrol tegangan pada DC - DC Buck Converter Naufal Maulana Fahmi; Rifqi Firmansyah
JURNAL TEKNIK ELEKTRO Vol. 15 No. 1 (2026): JANUARI 2026
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/jte.v15n1.p7-12

Abstract

Voltage control in DC–DC converters, especially buck converters, is a crucial element in modern power electronics systems because it directly impacts the efficiency, stability, and quality of supply in low- to medium-power electronic devices and industrial applications. Recent studies have emphasized that the nonlinear and load-dependent dynamics of converters require control strategies capable of maintaining stability despite parameter variations and external disturbances. PID-based control methods remain the most widely used approach due to their ease of implementation and ability to handle transient responses, although improper parameter tuning often leads to overshoot and slow response in power converter systems. This challenge is increasingly apparent in buck converters, which have fast dynamics and high sensitivity to load changes, making conventional tuning sometimes inadequate. Internal Model Control (IMC) is one of the modern tuning methods that offers a solution due to its model-based approach and its ability to produce control parameters that are more robust to system uncertainty. This study specifically analyzes the application of the IMC-PID method in buck converters by utilizing the FOPDT model to obtain the , , and  parameters. This approach is expected to provide more stable, faster, and adaptive tuning results compared to conventional methods. Keywords: IMC, PID, buck converter, voltage control.
Analisis Respon Dinamis Buck-Boost Converter Terhadap Duty Cycle dan Beban Muhamad Ma'sum; Rifqi Firmansyah; Parama Diptya Widayaka; Sayyidul Aulia Alamsyah
JURNAL TEKNIK ELEKTRO Vol. 15 No. 1 (2026): JANUARI 2026
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/jte.v15n1.p30-37

Abstract

Penelitian ini bertujuan untuk menganalisis respon dinamis buck-boost converter terhadap variasiduty cycle dan perubahan beban. Buck-boost converter merupakan salah satu jenis konverter DC–DC yangmampu menghasilkan tegangan keluaran lebih tinggi maupun lebih rendah dari tegangan masukan melaluipengaturan nilai duty cycle. Pada penelitian ini, fokus analisis diarahkan pada dua aspek utama, yaituperubahan duty cycle sebagai parameter kontrol dan variasi beban sebagai kondisi operasional yangmemengaruhi karakteristik keluaran sistem.Pengujian dilakukan dengan menerapkan beberapa nilai duty cycle untuk mengamati perubahantegangan keluaran serta respon transien yang muncul, meliputi ripple tegangan, overshoot, undershoot, risetime, dan settling time. Selain itu, variasi beban diterapkan untuk mengevaluasi stabilitas dan kemampuankonverter mempertahankan performa dinamis pada kondisi beban ringan, sedang, dan berat. Data keluarandiperoleh melalui pengukuran langsung menggunakan perangkat akuisisi sinyal dan dianalisis untukmengetahui hubungan antara parameter kontrol dan karakteristik dinamis konverter.Hasil penelitian menunjukkan bahwa peningkatan duty cycle secara umum menghasilkan kenaikantegangan keluaran, namun juga berdampak pada perubahan respon transien, terutama pada kondisi bebanberat. Sementara itu, variasi beban berpengaruh signifikan terhadap kestabilan tegangan keluaran dan nilairipple. Kesimpulan utama menyatakan bahwa baik duty cycle maupun beban memiliki peran penting dalammenentukan performa dinamis buck-boost converter, sehingga keduanya harus dipertimbangkan dalamperancangan sistem konversi daya yang stabil dan responsif.
ANALISA PENGARUH BENTUK IMPELLER TERHADAP PERFORMA POMPA SENTRIFUGAL DOUBLE SUCTION TYPE VENUS 1-900.1000 Rifqi Firmansyah; Bobie Suhendra
Jurnal Ilmiah Teknik Mesin Vol 6 No 2 (2018): JURNAL ILMIAH TEKNIK MESIN
Publisher : Universitas Islam 45 Bekasi, Fakultas Teknik, Jurusan Teknik Mesin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33558/jitm.v6i2.1925

Abstract

The impeller wheel is an important component of centrifugal pumps, which need to get importantattention starting from designing and modeling impeller shapes. This is very influential on theperformance of the pump. This study aims to determine the exact model of the impeller in theinstaller in parallel and to maintain the balance of the pump working operation with time. Themethod used is a comparative system of pump impeller models in order to improve pumpperformance optimally. From the results of this study that the pump with a discharge of 3.1 m3/sobtained optimum results with a pump head of 281 meters and an efficiency of 88% and dimensionsof the blade width of 22.5 cm for the double suction pump type.
Remaining Useful Life Estimation of Fouled HVAC Condensers via a Physics-Constrained Temporal Convolutional Network with SHAP Interpretation Dandy Risfanto Huri; Lusia Rakhmawati; Rifqi Firmansyah
INAJEEE (Indonesian Journal of Electrical and Electronics Engineering) Vol. 9 No. 1 (2026): Februari
Publisher : Department of Electrical Engineering, Faculty of Engineering, Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/inajeee.v9n1.p36-40

Abstract

The condenser is one of the most fouling-prone parts of an HVAC system, and as deposits build up the compressor draws more power while efficiency falls. Predictive maintenance tries to catch this decline early, but it needs a dependable estimate of how much useful life the component has left. As a preliminary, simulation-based feasibility study, this work examines whether an explainable and physically consistent model can supply that estimate for an air-cooled condenser. Using the asymptotic Kern-Seaton model, a degradation dataset covering one complete fouling cycle (180 days sampled every minute) was generated, and from it six thermal and electrical features were derived and checked against the underlying physics. A Temporal Convolutional Network (TCN) was then trained with a physics-informed penalty that prevents the predicted life from rising over time, and SHapley Additive exPlanations (SHAP) were used to expose the reasoning behind each prediction. On a quartile-stratified test set the unconstrained TCN obtained a mean absolute error of 2.63 days and an R2 of 0.994, against 3.43 days for an LSTM baseline. Adding the physics penalty raised the error only slightly, to 2.88 days, while cutting non-monotonic predictions, a deliberate trade-off of a small amount of pointwise accuracy for physically consistent RUL trajectories. SHAP ranked the approach temperature as the most influential feature, which matches the way fouling degrades heat transfer. The predicted RUL and a derived Health Index were finally translated into a four-level maintenance decision scheme. The results indicate that the framework is promising; validation on real sensor data is the necessary next step.
Solving the Reactive Power Dispatch Optimization for Large Scale System Nungky Ibrahim; Tri Wrahatnolo; Rifqi Firmansyah
INAJEEE (Indonesian Journal of Electrical and Electronics Engineering) Vol. 9 No. 2 (2026): August
Publisher : Department of Electrical Engineering, Faculty of Engineering, Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/inajeee.v9n2.p56-70

Abstract

Reactive power dispatch (RPD) is a crucial optimization task in power system operation because it seeks the optimal settings of control variables, such as generator voltages, transformer tap positions, and shunt VAR compensators, to reduce active power loss while satisfying operating constraints [file:1]. This study investigates the application of the fmincon solver and particle swarm optimization (PSO) to the RPD problem on three benchmark IEEE test systems, namely the 30-bus, 57-bus, and 118-bus networks [file:1]. For the IEEE 30-bus system, the minimum active power loss obtained by fmincon and PSO was 4.5480 MW and 4.4858 MW, respectively, corresponding to loss reductions of 21.88% and 22.95% from the initial value of 5.8223 MW [file:1]. For the IEEE 57-bus system, the power loss was reduced from 0.2846 p.u. to 0.2473 p.u. by fmincon and to 0.2362 p.u. by PSO, equivalent to reductions of 13.11% and 17.01%, respectively [file:1]. These results show that both methods are effective for large-scale RPD optimization, while PSO generally provides the best performance among the compared techniques in terms of active power loss minimization. The contribution of this study lies in providing a focused comparison between a deterministic nonlinear programming solver and a population-based metaheuristic approach across different system sizes, thereby demonstrating their practical suitability for large-scale reactive power optimization
Analisis Performa Pada Buck Converter Dengan Optimasi APO-PI kukuh dermawan; Rifqi Firmansyah
JURNAL TEKNIK ELEKTRO Vol. 15 No. 2 (2026): MEI 2026
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/jte.v15n2.p140-144

Abstract

The development of power electronics technology demands a voltage regulation system that has high performance and good stability. One device that is widely used in voltage regulation is the buck converter, which functions to reduce the voltage from a higher level to a lower level efficiently. However, the nonlinear dynamic characteristics of the buck converter can cause a less than optimal system response if the control method used is not appropriate, even though the system is operating under nominal conditions. This study proposes the application of the Arctic Puffin Optimization–Proportional Integral (APO-PI) method to improve the performance of the voltage regulation in the buck converter. The APO algorithm is used to optimize the parameters of the PI controller to obtain a faster, more stable, and more accurate voltage response. The results of the application of the APO-PI method show an increase in system performance in terms of transient response and voltage stability, characterized by reduced overshoot and shorter settling time. Thus, the APO-PI method is effectively used to improve the performance of the buck converter without requiring changes in system operating conditions.
Co-Authors A.A. Ketut Agung Cahyawan W Abdilla Eka Prasetya Aditama, Maulana Rizki Aditya Rendra Pratama Althobiti, Ahmad Andi Fatmawati Arif Widodo Aristyawan Putra Nurdiansyah Aurizal Brelian Bagaskara, Satria . Bagus Rio Rynaldo Bambang Suprianto . Bobie Suhendra Chatarina Umbul Wahyuni Dandy Risfanto Huri Dwi Anggorowati Rahayu Edy Sulistiyo Edy Sulistiyo Ely, Muhammad Nasir Endryansyah Endryansyah F., Muhammad Rafli Farid Baskoro Fida Jazilatur Rohma Firmansyah Nur Budiman, Firmansyah Nur Fransisca, Yulia G., Prayuda A. Gilang Esa Muhammad Habib Brilian Wicaksono Hapsari Peni Heri Ardiansyah Hidayat, Taufal I Gusti Putu Asto I Gusti Putu Asto Buditjahjanto Ibrohim Ismet Basuki Jumiyatun, Jumiyatun K., Mochamad Masnur Khairunnisa Mansur kukuh dermawan Lilik Anifah Lusia Rakhmawati M., Muhammad Badruddin A. Mahendra Widyartono Miftahur Rohman Miftakhul Hidayatullah As-Sidqi Muhamad Ma'sum Muhamad Syariffuddien Zuhrie Muhammad Hildan Saputra Mustakim, Zainal Nanda Eka Saputra Naufal Maulana Fahmi Nungky Ibrahim Nurdiansyah, Arityawan Putra Nurhayati Nurhayati Parama Diptya Widayaka Prasetya, Abdilla Eka Pressa P. S. Saputra Pressa Perdana Surya Saputra Puput Wanarti Rusimamto Purnomo, Yondra Adi Riansyah Aras Tanjung Riko Amiruddin Rohma, Fida Jazilatur Rudi Uswarman Rynaldo, Bagus Rio Saputra, Pressa P. S. Sari Cahyaningtias Sari Cahyaningtias Satria . Bagaskara Sayyidul Aulia Alamsyah Shabrina Putri Maghfira Shafiudin, Sofyan Sofyan Shafiudin Tan Suryani Sollu Tri Rijanto Tri Rijanto Tri Wrahatnolo Triawan Nugroho Unit Three Kartini Wahyu Cahya Putra Windra Choirul Pratama Yuli Sutoto Nugroho Yuli Sutoto Nugroho Yulia Fransisca