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All Journal Mechatronics, Electrical Power, and Vehicular Technology ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika JTERA (Jurnal Teknologi Rekayasa)
Misbahul Munir
Universitas Negeri Malang
Civil Engineering, Building, Construction & Architecture Computer Science & IT Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering Mechanical Engineering

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Rancang Bangun Sistem Proteksi Over Current Relay Dengan Karakteristik Inverse Sesuai IEC 60255 Terintegrasi IoT Untuk Monitoring Jarak Jauh Anissa Suprihatin; Misbahul Munir
JTERA (Jurnal Teknologi Rekayasa) Vol 11 No 1: Vol. 11 No. 1: Juni 2026
Publisher : Politeknik Sukabumi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31544/jtera.v11.i1.2026.171-180

Abstract

Penelitian ini membahas perancangan dan pengembangan prototipe sistem proteksi over current relay (OCR) berbasis mikrokontroler ESP32 dengan karakteristik inverse sesuai standar IEC 60255 yang terintegrasi Internet of Things (IoT) untuk monitoring jarak jauh. Latar belakang penelitian ini adalah kebutuhan industri menengah terhadap perangkat proteksi arus lebih yang andal namun tetap ekonomis, karena OCR konvensional berstandar industri umumnya mahal dan belum seluruhnya dilengkapi fitur pemantauan real-time. Sistem yang dikembangkan memanfaatkan sensor PZEM-004T untuk mengukur parameter kelistrikan, meliputi tegangan, arus, daya, energi, frekuensi, dan faktor daya. Data pengukuran diolah oleh ESP32 untuk menghitung Plug Setting Multiplier (PSM) dan menentukan waktu kerja relay berdasarkan tiga tipe kurva inverse IEC 60255, yaitu Standard Inverse, Very Inverse, dan Extremelyly Inverse. Keputusan trip dieksekusi melalui relay daya dan buzzer sebagai indikator alarm jika terjadi gangguan, sementara informasi parameter kelistrikan dan status proteksi ditampilkan pada LCD I2C 20×4 serta dikirim secara real-time ke platform Blynk IoT sehingga dapat dimonitor dan di-reset dari smartphone. Pengujian dilakukan pada beban resistif dan dinamis dalam rentang arus 1–20 A untuk mengevaluasi akurasi pembacaan sensor, kesesuaian waktu trip terhadap perhitungan teoritis kurva inverse, serta keandalan komunikasi IoT. Secara umum, prototipe yang dikembangkan diharapkan dapat menjadi alternatif OCR digital low-cost yang lebih informatif, fleksibel, dan mudah diintegrasikan pada sistem proteksi beban industri menengah.
Integration of a bidirectional cell in a quasi-Z-source inverter for CMV reduction and pure sinusoidal wave form Mohammad Imron Dwi Prasetyo; Muhammad Syahril Mubarok; Sofyan Muhammad Ilman; Misbahul Munir; Nur Vidia Laksmi B
Journal of Mechatronics, Electrical Power, and Vehicular Technology Vol 16, No 2 (2025)
Publisher : National Research and Innovation Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55981/j.mev.2025.1100

Abstract

With the increasing global commitment to renewable energy sources like photovoltaics (PV), there is a critical need for high-efficiency and high-power-quality converter topologies. Traditional two-stage PV systems are often complex and introduce significant Common Mode Voltage (CMV), leading to issues like leakage currents, high electromagnetic interference, and safety concerns. This paper proposes the Integration of a Bidirectional Cell within a quasi-Z-Source Inverter (BC-qZSI) to achieve CMV Reduction in a single-stage power conversion setup. The BC acts as an active balancing and filtering element rather than solely a boosting stage, ensuring a continuous current mode and actively suppressing the high-frequency CMV components generated by the shoot-through states. The analytical mathematical expression of the proposed topology is derived to confirm its operation, voltage boost capability, and CMV characteristics. Ideal simulation results, performed using PSIM software, validate the derived expressions and demonstrate the effectiveness of the proposed design. The topology achieves a significant reduction in CMV, lowering its amplitude more than 90% compared to the conventional qZSI. Furthermore, the output waveform quality is excellent, yielding a Total Harmonic Distortion (THDv) of 2 %, which complies with the IEEE Std 519-2014 standard for acceptable waveform quality. These results confirm that the integrated BC-qZSI topology effectively mitigates CMV while maintaining high power quality and a single-stage architecture.
Techno-Economic Evaluation of a Bagasse Gasification Biomass Power Plant in the Sugar Industry DIMAS SURYA FIRMANSYAH; ROYB FATKHUR RIZAL; MISBAHUL MUNIR
ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika Vol 14, No 2: Published April 2026
Publisher : Institut Teknologi Nasional, Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26760/elkomika.v14i2.246

Abstract

Bagasse utilization for power generation in sugar mills remains dominated by inefficient conventional boilers. This study assesses economic feasibility of a hybrid bagasse gasification power system using HOMER Pro software. The model includes a biomass gasifier, diesel generator, and grid connection, using operational data from Krebet Sugar Factory. Four sensitivity scenarios examined variations in investment cost, operational cost, and biomass price. The hybrid system yields a Net Present Cost of 14.2 million USD and Levelized Cost of Electricity of 0.088 USD/kWh, substantially outperforming the existing system with NPC 21.1 million USD and LCOE 0.203 USD/kWh. Investment viability is supported by an Internal Rate of Return of 12% and payback period of 4.8 years. Sensitivity analysis verifies economic resilience despite 20% cost escalation and elevated biomass prices.
Co-Authors Anissa Suprihatin DIMAS SURYA FIRMANSYAH Ilman, Sofyan M. Mohammad Imron Dwi Prasetyo Muhammad Syahril Mubarok Nur Vidia Laksmi B Royb Fatkhur Rizal