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Lembaga Penelitian dan Pengabdian Kepada Masyarakat (LP2M) Alamat: Graha Rektorat Lantai 6, Jl. Semarang No.5, Sumbersari, Kec. Lowokwaru, Kota Malang, Jawa Timur 65145, Indonesia
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Jurnal Inovasi Teknologi dan Edukasi Teknik
Published by Universitas Negeri Malang
ISSN : -     EISSN : 27977196     DOI : 10.17977
Core Subject : Engineering,
Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Electrical & Electronics Engineering Industrial & Manufacturing Engineering
Jurnal Inovasi Teknologi dan Edukasi Teknik menerbitkan naskah terkait Teknik Sipil, Teknologi Industri, Teknik Mesin, Teknik Elektro, dan Pendidikan Kejuruan. Fokus dan lingkup jurnal meliputi Teknik Sipil, Teknologi Industri, Teknik Mesin, Teknik Elektro, dan Pendidikan Kejuruan
Arjuna Subject : Teknik (semua kategori) - Teknik (Lain-Lain)
Articles 3 Documents
 1 
Search results for , issue "Vol. 4 No. 11 (2024)" : 3 Documents clear
DIFFICULTY IN PRONUNCIATION OF DIPHTHONGS AMONG PUBLIC SECONDARY SCHOOL STUDENTS IN ANAMBRA STATE Mary Nwanna, Ogechukwu
Jurnal Inovasi Teknologi dan Edukasi Teknik Vol. 4 No. 11 (2024)
Publisher : Universitas Ngeri Malang

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Abstract

The study examined the difficulties students encountered in pronouncing diphthongs. Specifically, the study highlighted some areas that posed problems for students in articulating diphthong sounds. The study was anchored in language acquisition theory, which posited that learners have acquired a first language and that their L1 might hamper the articulation of sounds, and in error analysis theory, which stated that a learner’s errors reflect their learning process. Here, the errors an L2 learner makes are traceable to either intra-lingual or developmental in nature or inter–lingual (transfer). A descriptive research design was adopted to describe the areas students find difficult when pronouncing diphthongs. Data were collected through structured questionnaires. Data were equally analyzed using mean scores. The study's findings revealed that ignoring glides in pronunciation and overemphasizing the first vowel were among the problematic areas that students couldn’t articulate properly. The study concluded that students should be exposed to continuous drilling to improve their pronunciation skills. This is because a second language learner has not gained veritable knowledge of how these diphthongs are pronounced. It was recommended, amongst others, that teachers attend workshops on the training prevalent in these diphthongs and possibly teach the students more effectively.
PANELIZED ELECTRICAL POWER OUTPUT MONITORING SYSTEM INTEGRATED SOLAR WEB SERVER Aripriharta, Aripriharta; Aprilia Putri , Annisa Firly; Afandi, Arif Nur; Omar, Saodah; Faiz, Mohamad Rodhi
Jurnal Inovasi Teknologi dan Edukasi Teknik Vol. 4 No. 11 (2024)
Publisher : Universitas Ngeri Malang

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Abstract

In Indonesia, the duration of sunlight energy harvesting is around 7-8 hours perday. It is considered capable of generating electricity with photovoltaics (PV). Proper monitoring of solar panels can help identify and fix problems with solar panels. To overcome these problems, this research will develop a solar panel electrical power output monitoring system integrated with a Web Server using the Internet of Things that allows users to perform remote monitoring via smartphones and PCs. The method used in this research is the DevOps method. The results showed that the monitoring system of solar panel electrical power output integrated with Web Server runs well and can display data in real-time with a delay time of ± 0.50 ms. Furthermore, overall system testing was carried out from 08.00 to 16.00 with the maximum voltage and current generated of 5.13V and 0.176A. The efficiency value produced by the 10Wp solar panel is 94.16%.
ANALYSIS OF HARMONIC DISTORTION REDUCTION ON MULTILEVEL INVERTERS USING SPWM MODULATION AND PASSIVE FILTER OPTIMIZATION Akbar, Muhammad Rezeki; Aripriharta, Aripriharta; Sujito, Sujito
Jurnal Inovasi Teknologi dan Edukasi Teknik Vol. 4 No. 11 (2024)
Publisher : Universitas Ngeri Malang

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Abstract

Solar power system is a renewable energy generator which is currently experiencing quite rapid development. One of the most important components of PLTS is the inverter. Inverter is a component that is used to convert direct voltage (DC) into alternating voltage (AC). However, in its implementation, the AC wave generated by the inverter is not yet a pure sinusoidal waveform. This is because there is harmonic distortion that exceeds the permitted standards. Based on IEEE STD 519-2014, the permitted Total Harmonic Distortion (THD) is not to exceed 5%. This study aims to analyze the reduction of harmonic distortion on Multilevel Inverters by using SPWM modulation and passive filter optimization. Harmonic distortion is reduced to not exceed the permissible standard, namely 5%. This study uses the Cascaded H-Bridges Multilevel Inverter (CHB-MLI) topology using PODPWM as the modulation technique. After that, the LCL passive filter is designed using the PSO Algorithm to optimize the parameters that make up the LCL filter. The results showed that the PSO Algorithm was able to optimize the passive LCL filter design used to reduce harmonic distortion in Multilevel Inverters. With parameter values L1, L2, and Cf each of 22.163 mH, 8.888mH, and 7.0984 μF; able to reduce the THD value to 3.06%.

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