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All Journal VANOS Journal of Mechanical Engineering Education JTERA (Jurnal Teknologi Rekayasa) Lektrokom: Jurnal Ilmiah Program Studi Teknik Elektro
Bambang Widodo
Universitas Kristen Indonesia
Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Mechanical Engineering

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Compact Fluorescence Lamp Based on Power Electronics Technology: its Advantages and Disadvantages Nana Heryana; Handoko Rusiana Iskandar; Bambang Widodo; Robinson Purba
JTERA (Jurnal Teknologi Rekayasa) Vol 4, No 1: June 2019
Publisher : Politeknik Sukabumi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31544/jtera.v4.i1.2019.99-108

Abstract

Power-electronics based Compact Fluorescent Lamps (CFLs) have been proven to reduce electrical energy consumption for lighting purpose. As in common power-electronics-based electrical devices, CFLs can be categorized as non-linear loads. Therefore, the input current has a non-sinusoidal waveform and contains harmonics. This paper discusses the advantages and disadvantages of CFL application and proposes the attachment of THD value to the product package in order to improve the marketing policy. Total Harmonic Distortion (THD) is a method used to find the percentage value between the total harmonic components and their fundamental components. The percentage of THD causes the greater risk of damage to equipment due to harmonics that occur in current and voltage. Laboratory testing shows that a CFL sample has THD of the input current as high as 67.7%. This THD is relatively high and may degrade the electrical power quality. Moreover, it could lead to the misreading of electrical power and energy meter. Several experiment results are shown and analyzed to confirm the validity of the discussed matter.  
ANALISIS PERBANDINGAN PENGHEMATAN KONSUMSI ENERGI LISTRIK DAN PERENCANAAN PEMBANGKIT LISTRIK TENAGA HYBRYD MENUJU LOW ENERGY BUILDING PADA HOTEL MERCURE PONTIANAK DAN HOTEL IBIS STYLES BANDARA SOEKARNO HATTA JAKARTA Teddy Gama Silalahi; Stepanus Stepanus; Bambang Widodo
Lektrokom : Jurnal Ilmiah Teknik Elektro Vol. 2 No. 1 (2019): Jurnal Lektrokom Volume 2, Oktober 2019
Publisher : Prodi Teknik Elektro FT UKI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33541/lektrokom.v2i1.3314

Abstract

In the current era of technological and information advancements, the growth of industry and business is becoming faster and faster. But this also encourages higher energy use and makes energy use a major contribution to operational costs that must be spent. This study aims to conduct a comparative analysis of Energy Consumption Intensity (IKE) at the Mercure Pontianak Hotel and the Ibis Styles Hotel SoekarnoHatta Airport Jakarta. The method used in this study is the Survey and Literature Study methods. Primary data is obtained from the 2018 Electricity Bill. The data is then used to calculate the Energy Consumption Intensity and then a simulation of energy savings using solar solar with Homer software simulation. The results showed that the IKE in the Mercure Pontianak Hotel building is bigger than the Ibis Styles Hotel SoekarnoHatta Airport which is 323,390 kWh / m2 / year meaning the energy usage in the Mercure Pontianak Hotel building is greater than the Ibis Styles Hotel SoekarnoHatta Airport Jakarta building with a difference of 79,389 kWh / year with a building age difference of +/- 5 years older Mercure Pontianak Hotel while the building area and number of rooms are almost the same. The simulation results of using solar cells obtained energy production of 221,866 kWh per year at a cost of Rp. 972 / kWh, meaning energy savings of 6-8% a year.
Analisis Perencanaan dan Kajian Ekonomi dalam Penggunaan PV Menuju Low Energy Building Pada Hote Inaya Putri Bali Fendy Eventius Mugni; Bambang Widodo; Stepanus Stepanus
Lektrokom : Jurnal Ilmiah Teknik Elektro Vol. 3 No. 1 (2020): Jurnal Lektrokom Volume 3, Oktober 2020
Publisher : Prodi Teknik Elektro FT UKI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33541/lektrokom.v3i1.3315

Abstract

Industrial and business growth develops rapidly from time to time. This also encourages higher energy use and energy use is a major contributor to operational costs. This study aims to carry out planning and economic studies in the use of PV towards a low-energy building at Hote Inaya Putri Bali. The method used in this research is the survey method and literature study. Primary data is obtained from the 2019 Electricity Bill. The data is then used to calculate the Intensity of Energy Consumption, then taken from energy simulations using solar solar with Homer software simulations. The results showed that the IKE in the Inaya Putri Bali Hotel building was 131.8 kWh / m2 / year, meaning that energy use in the Inaya Putri Bali Hotel building was still efficient. Using the solar cell simulation results, the energy obtained is 443,732 kWh per year at a cost of Rp. 972 / kWh, which means energy savings of Rp. 35,942,292 per month or 14.5% per year.
RANCANG BANGUN SISTEM PENGUKURAN SUHU TUBUH MANUSIA OTOMATIS TANPA KONTAK FISIK DENGAN SENSOR SUHU MLX90614 BERBASIS ARDUINO UNO PADA BILIK DISINFEKTAN Rizki Pardamean Sinaga; Susilo Susilo; Bambang Widodo
Lektrokom : Jurnal Ilmiah Teknik Elektro Vol. 3 No. 1 (2020): Jurnal Lektrokom Volume 3, Oktober 2020
Publisher : Prodi Teknik Elektro FT UKI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33541/lektrokom.v3i1.3317

Abstract

In the end of 2019, the world have been experiencing a pandemic event until today, the wide spread of coronavirus which is scientifically known as covid-19. One of the symptoms that emerges due to the spread of this virus is the human body is not in a normal temperature, which is more than 37.5°C. Therefore, the measurement of human body temperature is now a mandatory protocol in order to preventing the spread of the Covid-19 virus. This paper discusses about a tool that could measure the human body temperature without any physical contact is needed using The MLX90614 temperature sensor series based on Arduino Uno in the disinfectant booth. The type of sensor that is used in the manufacture of this tool is the MLX90614 temperature sensor, this sensor is known as a non-contact temperature sensor used in measuring the temperature of the human body without direct contact with the object. The purpose of making this tool is to make the measurement of human body temperature can be used in a faster way and to minimize a face-to-face contact with other human. This tool has an alarm that will work if the temperature is on ≥37.50C and then the alarm will be active for 10 seconds and if the temperature is <37.50C the alarm will be active for 1 second so that it’s able to detect people who are allowed or not allowed to enter the building, with a measurement distance of between 0.1 - 10 cm with accuracy level of 99.91%.
RANCANG BANGUN FILTER PASIF UNTUK MEREDUKSI TOTAL HARMONIC DISTORTION (THD) AKIBAT PEMAKAIAN LAMPU HEMAT ENERGI (LHE) DAN LIGHT EMITTING DIODE (LED) Alfronso Sinurat; Antonius Doddy Tyas Prasetyo; Eva Magdalena Silalahi; Bambang Widodo; Robinson Purba
Lektrokom : Jurnal Ilmiah Teknik Elektro Vol. 4 No. 1 (2021): Jurnal Lektrokom Volume 4, September 2021
Publisher : Prodi Teknik Elektro FT UKI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33541/lektrokom.v4i1.3318

Abstract

This paper discusses the design of a passive filter system for energy saving in Energy Saving Lamps (LHE) and Light Emitting Diode (LED), but for LHE and LED lamps for current Total Harmonic Distortion (THDi) that do not meet the standard. To reduce the current THD, it can be done by installing a single tune passive filter.””In this paper, we discuss the design of” a”passive filter system using a filter design with Matlab Simulink to determine the size of the components in filter design. To reduce the level of current harmonics, a single tune passive filter is designed which consists of an inductor and capacitor (LC) on the LHE and the LED.”Based on the research”data”that has been carried out,”the THDi measurement results for the lamp load test after using the filter are 49.12% for the LED circuit, 41.86% for the LHE circuit and 11.59% for the combined LED and LHE circuit.”Based on the results”of”each”measurement,”it can be seen that none have met the IEEE 519- 2014 standards. In this study, only using a filter tuned to the 3rd order, and based on the simulation results, it meets the IEEE 519-2014 standard, which is 1.11%.”The results of the design and testing of”tools (filters) show that they do not meet the IEEE 519-2014 standards, namely 11.59%.
TINJAUAN FLUKS CAHAYA, SUHU WARNA, TOTAL HARMONIC DISTORTION, FAKTOR DAYA LAMPU PIJAR, LAMPU HEMAT ENERGI DAN LIGHT EMITTING DIODE Mulya Haryanto; Eva Magdalena Silalahi; Bambang Widodo; Robinson Purba; Judo Ignatius Nempung
Lektrokom : Jurnal Ilmiah Teknik Elektro Vol. 3 No. 1 (2020): Jurnal Lektrokom Volume 3, Oktober 2020
Publisher : Prodi Teknik Elektro FT UKI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33541/lektrokom.v3i1.3349

Abstract

Requirements of energy in nowadays are directly proportional with human activities which use a lot of energy, especially for electrical energy, therefore, it is necessary to take energy saving measures such as lighting that use electronic devices with energy efficient. The latest lighting technology is used saving energy lamp (LHE) and light emitting diode (LED) which are designed to replace that use of incandescent lamps. The purpose of this research was to compare lamp based on light flux, colour temperature total harmonic distortion (THD) and power factor. The standard used for luminous lighting flux, the colour temperature standard of SNI 03-6575-2001 and THD using reference IEEE 519-2014.From the study has been done is obtained that level of lighting flux produced by LED type is bigger for twice than LHE type. The best colour temperature is LED with ratio value of 875oK/W. THD current for LHE and LED does not comply the standard, therefore THD current is smaller 4% - 7,3% from LED. The power’s factor produced by LHE and LED is 0.5 to 0.6.
RANCANG BANGUN PROTOTYPE TURBIN ANGIN GUNA MENENTUKAN PERBANDINGAN EFISIENSI YANG DIHASILKAN DARI JUMLAH BLADE 8 DAN JUMLAH BLADE 4 Sirdo Hasibuan; Susilo; Bambang Widodo; Robinson Purba
Lektrokom : Jurnal Ilmiah Teknik Elektro Vol. 1 No. 1 (2018): Jurnal Lektrokom Volume 1 Oktober 2018
Publisher : Prodi Teknik Elektro FT UKI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33541/lektrokom.v1i1.3367

Abstract

Dalam penelitian ini dirancang satu turbin dengan mengamati perbandingan jumlah sudu pada turbin terhadap ujuk kerja turbin seperti; daya dan efisiensi. Turbin terdiri dari blade dengan bentuk setengah silinder dengan luas penampang A = 0,246176 m2. Turbin angin ini didesain dengan diameter putar 170 cm dan perbandingan transmisi pada turbin dan generator yaitu 4:1. Hasil penelitian menunjukkan bahwa perbandingan jumlah sudu 8 dan 4, peforma terbaik dihasilkan oleh turbin angin jumlah sudu 8 dengan peningkatan 1,5 kali dibandingkan jumlah sudu 4. Kincir angin savonius dengan jumlah sudu 4 menghasilkan efisiensi paling tinggi sebesar 5% dan kincir angin savonius dengan jumlah sudu 8 menghasilkan efisiensi paling tinggi sebesar 10%. Pada kincir Angin Savonius sudu 4 tidak dapat berputar pada kecepatan angin rendah, hanya mampu berputar pada kecepatan angin angin ÷4 m/s . Hal ini diakibatkan karena celah antar sudu yang lebar, sehingga besarnya upwind dan downwind pada kincir sudu 4 sama besarnya. Daya Mekanik tertinggi Turbin angin savonius 8 sudu adalah 162, 85 watt dengan kecepatan angin 5,13 m/s pada percobaan tanpa beban dan daya mekanik terendah turbin angin savonius terjadi pada 4 bilah dengan beban sebesar 30,80 watt dengan kecepatan angin 3,71 m/s
PENGUKURAN TOTAL HARMONIC DISTORTION (THD) TERHADAP LAMPU HEMAT ENERGI (LHE) DAN LIGHT-EMITTING DIODE (LED) Fernando Jeremia Siahaan; Eva Magdalena Silalahi; Bambang Widodo; Robinson Purba
Lektrokom : Jurnal Ilmiah Teknik Elektro Vol. 3 No. 1 (2020): Jurnal Lektrokom Volume 3, Oktober 2020
Publisher : Prodi Teknik Elektro FT UKI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33541/lektrokom.v3i1.3372

Abstract

Abstract. Along with the rapid development of power electronics technology which is also useful for saving electrical energy. This technology is also used in lighting such as energy saving lamps (LHE) and light-emitting diode (LED). However, LHE and LED are non-linear loads that cause electrical power quality problems, namely producing voltage and current waveforms that are no longer sinusoidal or distorted waveforms. Distorted waves cause harmonic waves which have a frequency multiple of the fundamental frequency. The sum of the effective values of the harmonic components of the distorted waveform is calculated in terms of total harmonic distortion (THD). This study found that the THD value of the voltage generated by the LHE and LED loads was equal is 0.80% -1.3%, while the current THD generated by the LHE load was 68.57% - 78.68% and the LED was 72, 15% - 86.04%. The current THD value generated by the LHE and LED loads does not fulfil the IEEE Std 519-2014 harmornic distortion limits. The use of LHE and LED lamps simultaneously will reduce the resulting current THD value by 3% to 9%.
PERHITUNGAN ENERGI SOLAR PHOTOVOLTAIC DI WILAYAH KABUPATEN NIAS DAN KABUPATEN MENTAWAI DENGAN MENGGUNAKAN METODE PROBABILISTIK Boy Harefa; Bambang Widodo; Stepanus stepanus; Robinson Purba
Lektrokom : Jurnal Ilmiah Teknik Elektro Vol. 3 No. 1 (2020): Jurnal Lektrokom Volume 3, Oktober 2020
Publisher : Prodi Teknik Elektro FT UKI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33541/lektrokom.v3i1.3374

Abstract

This paper discusess the calculation of solar photovoltaic energy using a probabilistic approach in Nias and Mentawai districts. The application used is the @RISK Risk Analysis Project Model. In this research, the calculated random variable is the average temperature, the length of sunshine per month and solar radiation according to the regional zone. These three variables are fluctuating, so that the approach of each varianble uses a uniform distirbution function. From the three variables, it can be calculated that the energy generated by solar photovoltaic with a capacity of 100 Wp in Nias Regency is 21.062,57 kWh in one year with a probability of 55% and a capacity factor of 24,04%. Meanwhile, in Mentawai District, the same solar photovoltaic capacity of 100 Wp produces 19.249,47 kWh of energy with a probability of 50% and a capacity factor of 21,97%. From the results of this study it can be seen that the average temperature, duration of solar radiation and solar radiation can determine the electrical energy that can be generated by solar radiation can determine the electrical energy that can be generated by solar photovoltaic
Produksi Gas Oxy-Hidrogen dari Air sebagai Energi Baru Terbarukan Melalui Multi Series Cell Elektrolisis Futung Mustari; Bambang Widodo; Jalius Salebay
Lektrokom : Jurnal Ilmiah Teknik Elektro Vol. 1 No. 1 (2018): Jurnal Lektrokom Volume 1 Oktober 2018
Publisher : Prodi Teknik Elektro FT UKI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33541/lektrokom.v1i1.3386

Abstract

Seperti diketahui bahwa gas OxyHidrogen mempunyai molekul mono atomik yang dapat digunakan sebagai bahan bakar alternatif atau sumber energi terbarukan yang tiada habisnya untuk dimanfaatkan dalam mesin pembakaran internal maupun untuk Pengelasan (welding). Elektroliser dibuat menggunakan elektroda berupa Plat stainless steel tebal 0.6 mm dan diameter 6 inchs yang di susun 100 lapis (cel) yang berfungsi sebagai katoda dan anoda Penelusuran kepustakaan memperlihatkan bahwa, proses elektrolisa air dalam menghasilkan Oxyhidrogen gas biasanya menggunakan tegangan searah 12 Volt DC atau 24 V direct current dengan jumlah 6 cel dan 12 cel. Makalah ini membahas proses elektrolisa air dengan 100 cel menggunakan tegangan listrik 220 V ac. Hasil percobaan memperlihatkan bahwa produksi gas OxyHydrogen, 16 kali lebih besar jika menggunakan tegangan listrik 220 Volt ac dibandingkan dengan menggunakan tegangan listrik searah 12 Volt DC dengan 6 cel, dan 8 kali besar jika dibandingkan dengan tegangan listrik searah dengan teganan 24 Volt DC dengan 12 cel.
Co-Authors Alfronso Sinurat Antonius Doddy Tyas Prasetyo Bernadetha Nadeak Boy Harefa Budiarto Daniel Bawer Simanjuntak DAVID PARULIAN Eva Magdalena Silalahi Fendy Eventius Mugni Fernando Jeremia Siahaan Futung Mustari Handoko Rusiana Iskandar Jalius Salebay Judo Ignatius Nempung Manogari Sianturi Medyawanti Pane Mulya Haryanto Nana Heryana Rahmad Samosir Ridwan Leksana Rizki Pardamean Sinaga Robinson Purba Sirdo Hasibuan Stepanus Stepanus Stepanus Susilo Susilo Susilo Tahan Tobing Teddy Gama Silalahi