Garuda - Garba Rujukan Digital

p-Index From 2021 - 2026

4.187

P-Index

This Author published in this journals

All Journal Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Jurnal Ilmu Pertanian Indonesia Agrikultura Interest : Jurnal Ilmu Kesehatan Jurnal Agribisnis Indonesia (Journal of Indonesian Agribusiness) Forum Agribisnis JITRO (Jurnal Ilmiah dan Teknologi Peternakan Tropis) Jurnal Ekonomi Pembangunan: Kajian Masalah Ekonomi dan Pembangunan BERITA BIOLOGI Jurnal Penelitian Pertanian Terapan Buletin Ilmiah Litbang Perdagangan Jurnal Pengembangan Rekayasa dan Teknologi Elektrika Jurnal Agribest Agrisocionomics: Jurnal Sosial Ekonomi Pertanian Astonjadro Tunas: Jurnal Pendidikan Guru Sekolah Dasar Agro Bali: Agricultural Journal Jurnal Risalah Kebijakan Pertanian dan Lingkungan Jurnal Teknologi Lingkungan Lahan Basah Andalas Journal of Electrical and Electronic Engineering Technology Media Ekonomi Social Science Academic AGRIC Tematik Policy Brief Pertanian, Kelautan, dan Biosains Tropika Jurnal Agripet

Harmini, Harmini

Departemen Agribisnis, Fakultas Ekonomi Dan Manajemen, Institut Pertanian Bogor Jalan Kamper Wing 2 Lantai 5, Kampus IPB Dramaga, Bogor-Indonesia 16680, Telepon: +62-251-626520

Author-ID : 3020391

Religion Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Immunology & microbiology Law, Crime, Criminology & Criminal Justice Mechanical Engineering Public Health Social Sciences Transportation Veterinary Other

Published : 52 Documents Claim Missing Document

Claim Missing Document

Articles

Title

Desain dan Implementasi Maximum Power Solar Tracker Menggunakan Panel Photovoltaic di Kota Semarang Harmini, Harmini; Nurhayati, Titik
Elektrika Vol 15, No 2 (2017): Oktober
Publisher : Elektrika

Show Abstract | Download Original | Original Source | Check in Google Scholar

The purpose of this research is to design and implementation Maximum Solar Power Tracking system using photovoltaic panel, in order to increase solar panel efficiency and power. Data collection is done for the condition in Semarang city. The result of the research is expected to be base in planning of solar power system in Semarang city, whether it is for lighting lamp planning and for Solar Home System (SHS). This MPPT system design uses standard 180 degree servo motor to drive photovoltaic panel and control circuit using ATmega IC, while simulation using MATLAB program. Tracking is done by online tracking method by moving the photovoltaic panel to the radiation of the sun. Tracking simulation is done with step 20, 50 and 180 step. The average of voltage generated by system without tracking is 3.97 Volt while the average voltage generated by tracking system is 4.72 Volt. Efficiency between system without tracking and tracking system is 66.28% for tracking system and 78.78% for tracking system

DESAIN DAN IMPLEMENTASI MAXIMUM POWER SOLAR TRACKER MENGGUNAKAN PANEL PHOTOVOLTAIC DI KOTA SEMARANG Harmini, Harmini; Nurhayati, Titik
Elektrika Vol. 10 No. 1 (2018): April 2018
Publisher : Universitas Semarang

The purpose of this research is to design and implementation Maximum Solar Power Tracking system using photovoltaic panel, in order to increase solar panel efficiency and power. Data collection is done for the condition in Semarang city. The result of the research is expected to be base in planning of solar power system in Semarang city, whether it is for light-ing lamp planning and for Solar Home System (SHS). This MPPT system design uses standard 180 degree servo motor to drive photovoltaic panel and control circuit using ATmega IC, while simulation using MATLAB program. Tracking is done by online tracking method by moving the photovoltaic panel to the radiation of the sun. Tracking simulation is done with step 20, 50 and 180 step. The average of voltage generated by system without tracking is 3.97 Volt while the average volt-age generated by tracking system is 4.72 Volt. Efficiency between system without tracking and tracking system is 66.28% for tracking system and 78.78% for tracking system.Keywords: MPPT,Solar Photovoltaic, Tracking.

DESAIN SISTEM POMPA AIR SOLAR PHOTOVOLTAIC (SPV) 125 WATT DI DESA RAMBAT, KECAMATAN GEYER, KABUPATEN GROBOGAN Harmini, Harmini; Nurhayati, Titik
Elektrika Vol. 10 No. 1 (2018): April 2018
Publisher : Universitas Semarang

In this research will be designing a prototype of a water pump system using solar photovoltaic (SPV) that is designing a SPV in accordance with the needs of PV with the capacity of water pump. The power generated by the photovoltaic system will be used to drive the water pump. One of the areas in Central Java region that have not received water source is Dusun satreyan, Rambat Village Geyer Subdistrict Grobogan District. The solar photovoltaic (SPV) water pump system is de-signed using SPV panels, Solar Charge Controller, Battery and Inverter for the needs of 1 family head with water capacity per day is 300 Liter. The water pump capacity is 125 Watt, the number of SPV panels of 2 each with a capacity of 100 Wp, battery capacity, solar charge controller and inverter is 60 Ah, 10.42 Ampere and 12 volts DC 220 VAC. The average effi-ciency rating of the SPV water pump system as a whole is 61.18%Keywords: MPPT,Solar Photovoltaic, Tracking.

PEMODELAN SISTEM PEMBANGKIT HYBRID ENERGI SOLAR DAN ANGIN Harmini, Harmini; Nurhayati, Titik
Elektrika Vol. 10 No. 2 (2018): Oktober 2018
Publisher : Universitas Semarang

Hybrid energy system is to combine two energy sources that will provide power to the load. Sources of solar energy and wind energy will be used to generate power. In this research will be designed a model of hybrid system of solar energy and wind energy. The system is made equipped with energy storage systems in the form of batteries. Simulation or modeling using a circuit with components appropriate to the field application. Analysis of this system is the performance of hybrid generator characteristics based on load changes in the form of voltage, current and power values. The power generated by the PLTS is 3,000 Watts and the wind generator is 1,000 Watt with a resistive load of 4,000 Watt. Hybrid system generates a power of 2640 Watt so that the efficiency of hybrid system by 66%Keywords: Hybrid system, wind energy, solar energy

MODEL SISTEM INFORMASI MONITORING PERKULIAHAN FAKULTAS TEKNIK UNIVERSITAS SEMARANG BERBASIS WEB Derman, Derman; Harmini, Harmini
Elektrika Vol. 10 No. 2 (2018): Oktober 2018
Publisher : Universitas Semarang

The development of Information Technology is increasingly demanding that Higher Education to provide information quickly to meet the needs of Information and Monitoring Course for Lecturers, Students and Admin staff. This study aims to design a Model Information System and Monitoring Course at the Faculty of Engineering, University of Semarang Web-based. Coverage includes lecture planning, lecturing, evaluation of lecturing, control of lecturing and improvement of lecture planning. This research produces an application of Information System and Monitoring model of lecturing which aims to facilitate and accelerate the preparation of time, room and course schedule and ease in monitoring the attendance status of lecturers in class either to students or other parties in real time without having to come to campus check board information . The contribution of this research results will greatly affect the application of science and technology for higher education institutions and to realize the development of Faculty of Engineering Semarang University as a leading Faculty in 2023. The method used is dynamic priorities method which prioritizes the process that has the highest priority and is able to respond to changes in the system environment operate. Modeling the system using XAMPP package in which integrated MySQL module for database purposes, PHP for management of information systems, and Apache for simulation purposes. The results showed the implementation of the application of Information Systems Monitoring System Lectures Faculty of Engineering, University of Semarang goes well.

DESAIN GENERATOR OZONE DENGAN TEKNOLOGI PLASMA DBD (Die-lectric Barrier Discharge) Aryadi, Ricky; Supari, Supari; Harmini, Harmini
Elektrika Vol. 11 No. 1 (2019): April 2019
Publisher : Universitas Semarang

Industrial sterilization is a very important problem. Ozone is a powerful oxidizer that can function for sterilization and is environmentally friendly. Plasma DBD (Dielectric Barrier Discharge) is one of the effective technologies to obtain ozone. The ozone generator currently uses a lot of manual control operations. Manual control uses a mechanical system in the form of a potentiometer to calibrate the frequency and output of the ozone generator output, so that digitization and automation are needed to operate to replace human labor. The design of the digital ozone control generator is done using an AVR microcontroller. Programming used in this research is basic language (BASCOM), then uses a DAC (Digital to Analog Converter) system which is the output of a Microcontroller with a Weighted Binnary Resistor. The output of the microcontroller is frequency and 8 bit digital with a decimal parameter of 200. The result of automation is that the timer works for 2 hours. The greater frequency the ozone produced. At a frequency of 1500Hz the power produced is 308.58 watts with an ozone concentration of 59 ppm. Efficiency using a switching system> 90%. Keywords: Plasma, AVR Microcontroller, Ozone.

PREDIKSI BEBAN ENERGI LISTRIK APJ KOTA SEMARANG MENGGUNAKAN METODE RADIAL BASIS FUNCTION (RBF) Cahyo, Mukti Dwi; Heranurweni, Sri; Harmini, Harmini
Elektrika Vol. 11 No. 2 (2019): Oktober 2019
Publisher : Universitas Semarang

Electric power is one of the main needs of society today, ranging from household consumers to industry. The demand for electricity increases every year. So as to achieve adjustments between power generation and power demand, the electricity provider (PLN) must know the load needs or electricity demand for some time to come. There are many studies on the prediction of electricity loads in electricity, but they are not specific to each consumer sector. One of the predictions of this electrical load can be done using the Radial Basis Function Artificial Neural Network (ANN) method. This method uses training data learning from 2010 - 2017 as a reference data. Calculations with this method are based on empirical experience of electricity provider planning which is relatively difficult to do, especially in terms of corrections that need to be made to changes in load. This study specifically predicts the electricity load in the Semarang Rayon network service area in 2019-2024. The results of this Artificial Neural Network produce projected electricity demand needs in 2019-2024 with an average annual increase of 1.01% and peak load in 2019-2024. The highest peak load in 2024 and the dominating average is the household sector with an increase of 1% per year. The accuracy results of the Radial Basis Function model reached 95%.

Desain Solar Power Inverter pada Sistem Photovoltaic Harmini, Harmini; Nurhayati, Titik
Elektrika Vol. 12 No. 1 (2020): April 2020
Publisher : Universitas Semarang

Solar power inverter is one of the main components in the PLTS system in order to produce the power or energy needed by the load. Solar power inverter is used to convert from DC energy (Direct Current) to AC (Alternating Current) to load. In this research a simulation of a solar power inverter system on a photovoltaic system will be designed. Simulation is done using SIMULINK-MATLAB software. Solar power inverter is designed using a boost converter as a controller and a Full-Bridge Inverter. Boost Converter is designed from 12VDC - 17 VDC to 300 VDC. Full Bridge Inverter produces AC voltage of 240 VAC with modulation index 0.8 and frequency 60 Hz. Total Harmonic Distortion is 46.07%. Power of Photovoltaic Solar panels generated at 3500 Watts at 1000 Watt / m2 irradiation conditions and temperature temperatures of 25 degrees Celsius.

Perkiraan Pemakaian dan Kebutuhan Beban Energi Listrik Rayon Juwana Menggunakan Jaringan Saraf Tiruan (Radial Basis Function) Fitriyan, Moh Tamam Edy; Heranurweni, Sri; Harmini, Harmini
Elektrika Vol. 13 No. 1 (2021): April 2021
Publisher : Universitas Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26623/elektrika.v13i1.3329

Along with the development of the times the need for electrical energy is increasing. PT. PLN (Persero) as a company that supplies electrical energy must be able to meet the needs of electrical energy to run a business to supply electric power in an even amount to meet the needs of the household, industrial, social and business sectors.. The purpose of this research to determine how much the growth of electrical loads in 2020 to 2025 at PT. PLN (Persero) Rayon Juwana. To find out the amount of increase in electrical energy required. Electrical data used data for 8 years, from 2012 to 2019. The results of this study are in the form of an estimate of the use and need for load electrical energy load for the next 5 years, from 2020 to 2025, the data used are the number of subscribers, connected power, and the amount of energy using a simulated neural network with the method (radial basis function). the results of this study an increase per year an average of 1% per year. in 2019 the value is 1.07%, in 2020 it is 1.10%, 2021 is 1.21%, for 2022 it is 1.27%, 2023 is 1.28%, 2024 is 1.17% and 2025 is 1.31 %.

Co-Authors Ake Wihadanto Alfi Nurdina Amzul Rifin Ardie Ariyono Ardie Ariyono Aryadi, Ricky Bambang Haryanto Bayu Krisnamurthi Cahyo, Mukti Dwi Dalimunthe, Nina Rahmida Derman, Derman Diana Andrianita Kusumaningrum, Diana Andrianita Dwi Utami, Anisa Dwi Yulistiani Efendi, Zul Endang Sutedi Erna Wahdiana Ery Sadewa Farah Ratih Farah Ratih Fariyanti, Anna Ferry Firmawan Feryanto willcharo Firison, Jhon Fitriyan, Moh Tamam Edy Hardja, Adiva Fitri Khalishah Tjiptara Harianto Harianto Harianto Harianto Herawati Herawati I.G.P. Wigena Ishak, Andi Ismawati Ismawati Iwan Herdiawan Juniar Atmakusuma Juniar Atmakusuma Juniar Atmakusuma Khairil Anwar Kristiani, Mikha Lailandra, Andjani Lalu Hendri Setiawan Lestari, Puspita Mardika M. A. Firmansyah M. A. Firmansyah Mudjiastuti Handajani Muhammad Fadhil Adinugroho Muhammad Fadhil Adinugroho Muthmainnah Firdausa, Mutiara Netti Tinaprilla Novi Anggraini Nunung Kusnadi Nurhaita Nurhaita Prabawa Eka Soesanta Priyo Adi Sesotyo Puspito, Sigit Putra, Aditya Perdana Putri, Tursina Andita Ramon, Erpan Ratna Winandi Ratna Winandi Asmarantaka Ratna Winandi Asmarantaka Rita Nurmalina Rosbarnawan, Ferdy Rosiana, Nia Satria Pinandita Soraya Astia Putri Sri Heranurweni Subowo Subowo Subowo Subowo Suharno Suharno Supari Supari Supari, Supari suparman suparman Suparman Suparman Supratman Supratman, Supratman Suprehatin Suprehatin Suryana, Anggita Tresliyana Tarigan, Anita Carolin Aprilia Taufik Hidayat Taupik Rahman Titik Nurhayati Titik Nurhayati Tresia, Gresy Eva Veronica do Carmo da Silva Vinami Yulian Wahyu Adi Nugroho Wardi Wardi Wigena, I.G.P. Wisri Puastuti Yanti Nuraeni Muflikh Yanuar, Rahmat Yusman Syaukat

Title Search

Found 9 Documents Search Journal : Elektrika

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Title

Found 9 Documents
Search
Journal : Elektrika