Sci-Tech Journal
Vol. 5 No. 1 (2026): Sci-Tech Journal (STJ)

Analisis Respon Dinamis dan Distorsi Harmonisa pada Inverter NPC Satu Fasa Menggunakan Multicarrier PWM

I Ketut Wiryajati (Unknown)
Ida Ayu Sri Adnyani (University of Mataram, Indonesia)
I Ketut Perdana Putra (University of Mataram, Indonesia)
I G A K Chatur Adhi Wirya Aryadi (University of Mataram, Indonesia)



Article Info

Publish Date
13 Jun 2026

Abstract

This study presents the performance analysis of a single-phase Neutral Point Clamped (NPC) inverter using the multicarrier pulse width modulation (PWM) technique based on MATLAB/Simulink simulation. The inverter system employs eight semiconductor switches controlled through multilevel PWM modulation to produce an AC output waveform close to sinusoidal characteristics. Performance evaluation was conducted through statistical analysis of output voltage and current, transient response, dynamic response, and harmonic distortion analysis. The simulation results show that the inverter produces relatively stable voltage and current waveforms with symmetrical characteristics between positive and negative cycles. The output voltage achieved a maximum value of 45.86 V with an RMS value of 31.02 V. The system also demonstrated a relatively fast dynamic response with rise time and fall time values of 3.768 ms. However, FFT analysis indicated that the Total Harmonic Distortion (THD) remained relatively high at 42.93%. Therefore, optimization of switching frequency, control methods, and LC filter design is required to improve power quality performance.

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Journal Info

Abbrev

stj

Publisher

Subject

Agriculture, Biological Sciences & Forestry Computer Science & IT Decision Sciences, Operations Research & Management Engineering Industrial & Manufacturing Engineering Public Health

Description

Sci-Tech Journal is a peer-reviewed national journal published by Masyarakat Ekonomi Syariah (MES) Bogor in collaboration with Institut Agama Islam Nasional (IAI-N) Laa Roiba Bogor, Ikatan Ahli Ekonomi Islam (IAEI), and Intelectual Association for Islamic Studies (IAFORIS) . This journal contains ...