Integrasi Metode PPDIOO dan MAFMA untuk Optimalisasi Pulse Width Modulation sebagai Pengganti Darurat Automatic Voltage Regulator pada Diesel Generator

Imam Gazali, Sukendro Broto Sasongko

Abstract

Damage to the Automatic Voltage Regulator (AVR) of a diesel generator may cause output Voltage instability and disrupt the continuity of electrical power supply. This study aims to optimize Pulse Width Modulation (PWM) as an emergency AVR substitute through the integration of the Prepare, Plan, Design, Implement, Operate, and Optimize (PPDIOO) framework and Multi-Attribute Failure Mode Analysis (MAFMA). A quantitative experimental approach was applied to a 380 V, 50 Hz, 50 kW, three-phase diesel generator under load variations of 0%, 25%, 50%, 75%, and 100%. The results showed that the PWM system maintained generator Voltage between 377 and 380 V, with a maximum Voltage drop of 0.79%. The estimated one-hour reliability reached 96.1%. Risk analysis identified duty-cycle error and sensor noise as dominant failure modes. The integrated approach provides a systematic framework for developing, evaluating, and continuously optimizing an emergency PWM-based excitation control system.

Keywords: automatic voltage regulator, diesel generator, MAFMA, PPDIOO, pulse width modulation.

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DOI: https://doi.org/10.31284/j.senopati.2026.v8i1.9199

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