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All Journal International Journal of Electrical and Computer Engineering International Journal of Power Electronics and Drive Systems (IJPEDS) International Journal of Applied Power Engineering (IJAPE) JURNAL NASIONAL TEKNIK ELEKTRO Indonesian Journal of Electrical Engineering and Computer Science Warta Pengabdian Andalas: Jurnal Ilmiah Pengembangan Dan Penerapan Ipteks Jurnal Andalas: Rekayasa dan Penerapan Teknologi

Andi Pawawoi

Universitas Andalas

Author-ID : 2396989

Computer Science & IT Control & Systems Engineering Education Electrical & Electronics Engineering Health Professions Industrial & Manufacturing Engineering Medicine & Pharmacology Social Sciences Other

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Peningkatan Daya Output Photovoltaik Dengan Penambahan Lapisan Kaca Film Pada Permukaannya Pawawoi, Andi; Pranata, Vegi Apria
JURNAL NASIONAL TEKNIK ELEKTRO Vol 9, No 3: November 2020
Publisher : Jurusan Teknik Elektro Universitas Andalas

One of the parameters that affect photovoltaic output is temperature. The optimum working temperature of photovoltaic is in the range of 25oC. Any increase in temperature will cause a decrease in photovoltaic output. Window film is one of the most widely used materials to block heat while still being able to pass sunlight. The main characteristic of window film that can block heat is known as the IRR (Infra Red Rejected) and the ability to pass light is known as the VLT (Visible Light Transmittance). The greater the VLT, the smaller its ability to block heat, and vice versa. In its application to photovoltaics, it is necessary to find and test suitable window film for increasing the photovoltaic output power. In this paper, the results of testing of 3 types of window films with different VLT, the highest, medium and low VLT films chosen according to the market, namely VLT: 90%, 72% and 60%. The third window film is applied by sticking it to the surface of the photovoltaic. The test is carried out by comparing it with standard photovoltaic (without window film) on sunny weather from 10:00 to 14:00 each for 3 days. The results showed that photovoltaic film coated with 90% VLT was able to increase the average output power by +49.36%, while Â those coated with 72% and 60% VLT had decreased power respectively -6.53% and -26.20 %Â Keywords : Photovoltaic power, Window film, Heat reductionAbstrakSalah satu parameter yang mempengaruhi output photovoltaik adalah temperatur. Temperatur kerja optimum photovoltaik berada pada kisaran 25oC. Setiap kenaikan temperatur akan menyebabkan penurunan output photovoltaik. Kaca film adalah salah satu material yang banyak digunakan untuk memblok panas namun tetap mampu melewatkan cahaya matahari. Karakteristik utama kaca film yang dapat memblok panas dikenal dengan istilah IRR (Infra Red Rejected) dan kemampuan melewatkan cahaya dikenal dengan istilah VLT (Visible Light Transmittance). Semakin besar VLT maka semkin kecil kemampuannya memblok panas, demikian juga sebaliknya. Dalam aplikasinya pada photovoltaik, perlu dicari dan diuji Â kaca film yang sesuai untuk peningkatan daya output photovoltaik. Dalam tulisan ini diuraikan hasil pengujian 3 jenis kaca film dengan VLT yang berbeda, dipilih kaca film dengan VLT tertinggi, sedang dan rendah sesuai yang ada di pasaran, yaitu VLT: 90%, 72% dan 60%. Ketiga kaca film tersebut diaplikasikan dengan cara ditempelkan pada permukaan photovoltaik. Pengujian dilakukan dengan membandingkannya dengan photovoltaik standar (tanpa kaca film) pada cuara cerah dari jam 10.00 hingga jam 14.00 masing-masing selam 3 hari. Hasilnya menunjukkan photovoltaik dilapisi kaca film dengan VLT 90% mampu meningkatkan daya output rata-rata 49,36%, sementara yang dilapisi kaca film dengan VLT 72% dan 60 % mengalami penurunan daya berturut-turutÂ -6,53 % dan -26,20%Â Kata Kunci : Daya Photovoltaik, Kaca film, Reduksi panas

Penambahan Sistem Pendingin Heatsink Untuk Optimasi Penggunaan Reflektor Pada Panel Surya Pawawoi, Andi; Zulfahmi, Zulfahmi
JURNAL NASIONAL TEKNIK ELEKTRO Vol 8, No 1: March 2019
Publisher : Jurusan Teknik Elektro Universitas Andalas

An alternative to increase photovoltaic output power is by increasing the intensity of received light using a reflector. However, the added intensity will increase in the temperature, hence reduce the photovoltaic output power. To optimize the use of reflectors in photovoltaics, a cooling system (i.e. Heatsink) needs to be added. This paper aims to find out the effect of adding aÂ HeatsinkÂ cooling system to photovoltaics that equipped with a reflector.Â Heatsinks are installed at the entire back side of the panel and filled with thermal paste. Observations were made by comparing the photovoltaic system using a reflector without cooling system and the photovoltaic system using a reflector equipped with aÂ HeatsinkÂ cooling system. The results show that the photovoltaic with cooling system has 18.26% average temperature decrease and 10.14% average power increase if compared to a photovoltaic system equipped with a reflector without a cooling system.Â Keywords: Photovoltaic, temperature, power, and cooling system.AbstrakÂ Alternatif yang dapat dipilih untuk meningkatkan daya keluaran photovoltaik yakni dengan menambah intensitas cahaya yang diterima menggunakan reflektor. Namun apabila intensitas ditambah akan menyebabkan kenaikan temperatur yang ikut seiring dengan peningkatan intensitas cahaya, hal ini akan menurunkan daya keluaran photovoltaik. Untuk mengoptimalkan penggunaan reflektor pada photovoltaik perlu ditambahkan sistem pendingin. Tulisan ini bertujuan untuk melihat pengaruh penambahan sistem pendingin Heatsink pada photovoltaik yang dilengkapi dengan reflektor. Heatsink ditempelkan pada seluruh sisi belakang panel, dan untuk memperkecil resistansi termal, maka antara panel dan Heatsink diisi dengan paste termal. Pengamatan dilakukan dengan membandingkan 2 sistem, yaitu: sistem photovoltaik menggunakan reflektor tanpa pendingin dan sistem photovoltaik menggunakan reflektor yang dilengkapi sistem pendingin Heatsink. Hasilnya menunjukkan bahwa bahwa dengan penambahan sistem pendinginÂ photovoltaik yang dilengkapi reflektor diperoleh penurunan suhu rata-rata 18,26% dan peningkatan daya rata-rata sebesar 10,14% dibanding sistemÂ photovoltaik yang dilengkapi reflektor tanpa sistem pendingin.Â Kata kunci: Photovoltaik, temperatur, daya, dan sistem pendingin.

Studi Penggunaan Metil Ester Minyak Sawit Sebagai Minyak Isolasi Peralatan Listrik Rajab, Abdul; Pawawoi, Andi; Sulaeman, Aminudin; Mujahidin, Didin
JURNAL NASIONAL TEKNIK ELEKTRO Vol 3, No 1: Maret 2014
Publisher : Jurusan Teknik Elektro Universitas Andalas

This paper discusses experimental results on some parameters of palm methyl ester as insulating oil. Destillations are firstly made to obtained the composition of oil that provide the optimal compromise among measured parameters. Breakdown voltage, dissipation factor, dielectric constant, viscosity and oxidation stability were then tested on original, destilled, and destillation residual oils. The results showed that the dissipation factor and viscosity of destilled palm methyl ester comply with the standard spesification for natural ester to be used as insulating oil. Sadly, the breakdown voltage and oxidation stability of oils do not fulfill the standard. However, the lower breakdown voltage of oils seem to be tolerable as their value are still higher then that of mineral oil. Dielectric constant of oils which were higher then that of mineral oil is an advantage when the oils will be used in combination with solid insulation for more uniformly field reason.Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Key words : Methyl ester, breakdown voltage, dissipation factor, dielectric constant, viscosity, oxidation stability.Â AbstrakMakalah ini membahas beberapa parameter metil ester minyak sawit sebagai minyak isolasi. Destilasi dilakukan untuk mendapatkan komposisi minyak yang paling mungkin digunakan sebagai kandidat minyak isolasi. Minyak asli, hasil destilasi dan residu dari destilasi kemudian diuji beberapa parameternya seperti tegangan tembus, faktor disipasi, konstanta dielektrik, viskositas dan stabilitas oksidasi. Hasilnya menunjukkan bahwa faktor disipasi dan viskositas metil ester minyak sawit memenuhi standar sebagai minyak isolasi. Sayangnya tegangan tembus dan stabilitas oksidasinya termasuk kurang memadai. Namun demikian, tegangan tembusnya mungkin bisa ditolerir karena nilanya lebih baik dibanding minyak mineral. Konstanta dielektrik minyak yang lebih tinggi dibanding minyak mineral termasuk menguntungkan untuk keseragaman medan yang lebih baik saat penggunaan bersama dengan isolasi padat.Kata Kunci : Metil ester, tegangan tembus, faktor disipasi, konstanta dielektrik, viskositas, stabilitas oksidasiÂ Â

Effect analysis of residual magnetism availability level on the success of voltage generation processes in self-excited induction generators Refdinal Nazir; Syafii Syafii; Andi Pawawoi; Fajril Akbar; Yudi Arfan
International Journal of Power Electronics and Drive Systems (IJPEDS) Vol 11, No 3: September 2020
Publisher : Institute of Advanced Engineering and Science

The voltage generation process is a very crucial initial stage for the successful operation of the self-excited induction generator (SEIG). The availability of residual magnetism and the adequacy of excitation capacitor value are factors that determine the success of the voltage generation process on the SEIG. This paper analyzes the effect of the availability of residual magnetism on the rotor's magnetic core. With a simple approach, the terminal voltage on the SEIG can be solved through the intersection between the magnetization curve (Xm) and the excitation curve (Xce). The shape and equation of the magnetization curve will be affected by the availability of residual magnetism. The change in residual magnetism availability will cause a change in the intersection point between the magnetization curve (Xm) and the excitation curve (Xce), which will determine the value of voltage generated by the generator. In this study, Newton Rhapson's method with numerical iteration approach has been used to analyze the effect of changes in the availability of residual magnetism on the success of voltage generation on the SEIG. The analysis results have been shown that the availability of residual magnetism with residual voltage values below 1.04 Volt will cause the failure of the SEIG to generate the terminal voltage at its nominal value. Meanwhile, the availability of residual magnetism in SEIG with residual voltage values above 1.04 Volt, will succeed in generating terminal voltage at its nominal value. For SEIG used as the object of this study, the value of Eres = 1.04 Volt is a critical value of the availability of residual magnetism.

Differences in the impact of harmonic distortion due to the installation of electronic load controller in self-excited induction generator and synchronous generator Refdinal Nazir; Syafii Syafii; Andi Pawawoi; Fajril Akbar; Axel Doriza
International Journal of Power Electronics and Drive Systems (IJPEDS) Vol 10, No 1: March 2019
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijpeds.v10.i1.pp104-116

In general, the application of Self-Excited Induction Generator (SEIG) or Synchronous Generator (SG) on the Stand-Alone Micro Hydel Power Plant (MHPP) is equipped with Electronic Load Controller (ELC) to control generator output during variations in consumer load. One type of ELC that is cheap and rigid developed today is the ELC, which is constructed by the uncontrolled bridge rectifier with DC Chopper. Based on the operational concept, basically this type of ELC can be implemented on both SEIG and SG, but both of these generators will have a different harmonic distortion effect on the output and its load. This paper examines the differences in the effects of harmonic distortions due to ELC installation on SEIG and SG. The initial stage of this study was to design the ELC developed. Then, the harmonic distortion response due to the installation of ELC on SEIG and SG is tested, which includes harmonic distortion in: stator current, PCC voltage, and consumer load current. THDI (Current Total Harmonic Distortion) stator current at SEIG with ELC has shown an average value smaller than the THD stator current in SG with ELC. Likewise, the THDV (Voltage Total Harmonic Distortion) value of PCC voltage and THDI value of the current consumer load on SEIG equipped with ELC has been shown to be smaller than the THDV value of PCC voltage and THDI value of the current consumer load on SG equipped with ELC. The effects of harmonic distortions due to the installation of ELCs that developed in this study on SEIG is still within the permitted limits, while on the SG, the harmonic distortion reduction is needed at the generator output.

Effect of PWM Duty Cycle and Frequency of Power Supply to the LED Bulb Efficacy Andi Pawawoi; Wahyu Prabowo
International Journal of Power Electronics and Drive Systems (IJPEDS) Vol 8, No 3: September 2017
Publisher : Institute of Advanced Engineering and Science

In this paper described the effect of frequency and duty cycle of the PWM power supply LED bulb light efficacy. Efficacy LED bulb is measured by measuring the light flux and power consumed at standard conditions, the bulb is supplied directly from the network. Then efficacy, the luminous flux and power the bulb is also measured under the conditions given PWM power supply at some frequency and duty cycle value. In the same light flux levels between the two treatment, the use of PWM power supply can increase the efficacy of the light bulb up to 66.2%, with a value of 117.52 light efficacy lumen / Watt. At the level of light flux which is slightly lower, the use of PWM power supply to the LED bulb with a specific frequency and power supply can achieve the efficacy of 397.14 lumens / Watt

On Load Characteristic of the New Design Permanent Magnets Reluctance Generator Andi Pawawoi; Syafii Syafii
International Journal of Applied Power Engineering (IJAPE) Vol 6, No 3: December 2017
Publisher : Institute of Advanced Engineering and Science

These The new design of a permanent magnet reluctance generator claimed to be able to convert the energy of the permanent magnet is the source of the main field into electrical energy, so that the generator output power can reach 167% compared with the input power axis. In this paper will discuss the characteristics of the generator voltage when under load, pure resistance, inductive load and caThese The new design of a permanent magnet reluctance generator claimed to be able to convert the energy of the permanent magnet is the source of the main field into electrical energy, so that the generator output power can reach 167% compared with the input power axis. In this paper will discuss the characteristics of the generator voltage when under load, pure resistance, inductive load and capacitive load. The results showed that when given a purely resistive load, the terminal voltage tends to be constant, but if given the inductive load, the voltage drop occurs significantly approaching zero voltage at full load current. It is very different when loaded capacitive load. When the generator under load is capacitive, the generator voltage at full load increased by 224.7% from no-load voltage.pacitive load. The results showed that when given a purely resistive load, the terminal voltage tends to be constant, but if given the inductive load, the voltage drop occurs significantly approaching zero voltage at full load current. It is very different when loaded capacitive load. When the generator under load is capacitive, the generator voltage at full load increased by 224.7% from no-load voltage

Studi Penggunaan Metil Ester Minyak Sawit Sebagai Minyak Isolasi Peralatan Listrik Abdul Rajab; Andi Pawawoi; Aminudin Sulaeman; Didin Mujahidin
JURNAL NASIONAL TEKNIK ELEKTRO Vol 3 No 1: Maret 2014
Publisher : Jurusan Teknik Elektro Universitas Andalas

This paper discusses experimental results on some parameters of palm methyl ester as insulating oil. Destillations are firstly made to obtained the composition of oil that provide the optimal compromise among measured parameters. Breakdown voltage, dissipation factor, dielectric constant, viscosity and oxidation stability were then tested on original, destilled, and destillation residual oils. The results showed that the dissipation factor and viscosity of destilled palm methyl ester comply with the standard spesification for natural ester to be used as insulating oil. Sadly, the breakdown voltage and oxidation stability of oils do not fulfill the standard. However, the lower breakdown voltage of oils seem to be tolerable as their value are still higher then that of mineral oil. Dielectric constant of oils which were higher then that of mineral oil is an advantage when the oils will be used in combination with solid insulation for more uniformly field reason. Key words : Methyl ester, breakdown voltage, dissipation factor, dielectric constant, viscosity, oxidation stability. AbstrakMakalah ini membahas beberapa parameter metil ester minyak sawit sebagai minyak isolasi. Destilasi dilakukan untuk mendapatkan komposisi minyak yang paling mungkin digunakan sebagai kandidat minyak isolasi. Minyak asli, hasil destilasi dan residu dari destilasi kemudian diuji beberapa parameternya seperti tegangan tembus, faktor disipasi, konstanta dielektrik, viskositas dan stabilitas oksidasi. Hasilnya menunjukkan bahwa faktor disipasi dan viskositas metil ester minyak sawit memenuhi standar sebagai minyak isolasi. Sayangnya tegangan tembus dan stabilitas oksidasinya termasuk kurang memadai. Namun demikian, tegangan tembusnya mungkin bisa ditolerir karena nilanya lebih baik dibanding minyak mineral. Konstanta dielektrik minyak yang lebih tinggi dibanding minyak mineral termasuk menguntungkan untuk keseragaman medan yang lebih baik saat penggunaan bersama dengan isolasi padat.Kata Kunci : Metil ester, tegangan tembus, faktor disipasi, konstanta dielektrik, viskositas, stabilitas oksidasi

Penambahan Sistem Pendingin Heatsink Untuk Optimasi Penggunaan Reflektor Pada Panel Surya Andi Pawawoi; Zulfahmi Zulfahmi
JURNAL NASIONAL TEKNIK ELEKTRO Vol 8, No 1: March 2019
Publisher : Jurusan Teknik Elektro Universitas Andalas

An alternative to increase photovoltaic output power is by increasing the intensity of received light using a reflector. However, the added intensity will increase in the temperature, hence reduce the photovoltaic output power. To optimize the use of reflectors in photovoltaics, a cooling system (i.e. Heatsink) needs to be added. This paper aims to find out the effect of adding a Heatsink cooling system to photovoltaics that equipped with a reflector. Heatsinks are installed at the entire back side of the panel and filled with thermal paste. Observations were made by comparing the photovoltaic system using a reflector without cooling system and the photovoltaic system using a reflector equipped with a Heatsink cooling system. The results show that the photovoltaic with cooling system has 18.26% average temperature decrease and 10.14% average power increase if compared to a photovoltaic system equipped with a reflector without a cooling system. Keywords: Photovoltaic, temperature, power, and cooling system.Abstrak Alternatif yang dapat dipilih untuk meningkatkan daya keluaran photovoltaik yakni dengan menambah intensitas cahaya yang diterima menggunakan reflektor. Namun apabila intensitas ditambah akan menyebabkan kenaikan temperatur yang ikut seiring dengan peningkatan intensitas cahaya, hal ini akan menurunkan daya keluaran photovoltaik. Untuk mengoptimalkan penggunaan reflektor pada photovoltaik perlu ditambahkan sistem pendingin. Tulisan ini bertujuan untuk melihat pengaruh penambahan sistem pendingin Heatsink pada photovoltaik yang dilengkapi dengan reflektor. Heatsink ditempelkan pada seluruh sisi belakang panel, dan untuk memperkecil resistansi termal, maka antara panel dan Heatsink diisi dengan paste termal. Pengamatan dilakukan dengan membandingkan 2 sistem, yaitu: sistem photovoltaik menggunakan reflektor tanpa pendingin dan sistem photovoltaik menggunakan reflektor yang dilengkapi sistem pendingin Heatsink. Hasilnya menunjukkan bahwa bahwa dengan penambahan sistem pendingin photovoltaik yang dilengkapi reflektor diperoleh penurunan suhu rata-rata 18,26% dan peningkatan daya rata-rata sebesar 10,14% dibanding sistem photovoltaik yang dilengkapi reflektor tanpa sistem pendingin. Kata kunci: Photovoltaik, temperatur, daya, dan sistem pendingin.

Peningkatan Daya Output Photovoltaik Dengan Penambahan Lapisan Kaca Film Pada Permukaannya Andi Pawawoi; Vegi Apria Pranata
JURNAL NASIONAL TEKNIK ELEKTRO Vol 9, No 3: November 2020
Publisher : Jurusan Teknik Elektro Universitas Andalas

One of the parameters that affect photovoltaic output is temperature. The optimum working temperature of photovoltaic is in the range of 25oC. Any increase in temperature will cause a decrease in photovoltaic output. Window film is one of the most widely used materials to block heat while still being able to pass sunlight. The main characteristic of window film that can block heat is known as the IRR (Infra Red Rejected) and the ability to pass light is known as the VLT (Visible Light Transmittance). The greater the VLT, the smaller its ability to block heat, and vice versa. In its application to photovoltaics, it is necessary to find and test suitable window film for increasing the photovoltaic output power. In this paper, the results of testing of 3 types of window films with different VLT, the highest, medium and low VLT films chosen according to the market, namely VLT: 90%, 72% and 60%. The third window film is applied by sticking it to the surface of the photovoltaic. The test is carried out by comparing it with standard photovoltaic (without window film) on sunny weather from 10:00 to 14:00 each for 3 days. The results showed that photovoltaic film coated with 90% VLT was able to increase the average output power by +49.36%, while those coated with 72% and 60% VLT had decreased power respectively -6.53% and -26.20 % Keywords : Photovoltaic power, Window film, Heat reductionAbstrakSalah satu parameter yang mempengaruhi output photovoltaik adalah temperatur. Temperatur kerja optimum photovoltaik berada pada kisaran 25oC. Setiap kenaikan temperatur akan menyebabkan penurunan output photovoltaik. Kaca film adalah salah satu material yang banyak digunakan untuk memblok panas namun tetap mampu melewatkan cahaya matahari. Karakteristik utama kaca film yang dapat memblok panas dikenal dengan istilah IRR (Infra Red Rejected) dan kemampuan melewatkan cahaya dikenal dengan istilah VLT (Visible Light Transmittance). Semakin besar VLT maka semkin kecil kemampuannya memblok panas, demikian juga sebaliknya. Dalam aplikasinya pada photovoltaik, perlu dicari dan diuji kaca film yang sesuai untuk peningkatan daya output photovoltaik. Dalam tulisan ini diuraikan hasil pengujian 3 jenis kaca film dengan VLT yang berbeda, dipilih kaca film dengan VLT tertinggi, sedang dan rendah sesuai yang ada di pasaran, yaitu VLT: 90%, 72% dan 60%. Ketiga kaca film tersebut diaplikasikan dengan cara ditempelkan pada permukaan photovoltaik. Pengujian dilakukan dengan membandingkannya dengan photovoltaik standar (tanpa kaca film) pada cuara cerah dari jam 10.00 hingga jam 14.00 masing-masing selam 3 hari. Hasilnya menunjukkan photovoltaik dilapisi kaca film dengan VLT 90% mampu meningkatkan daya output rata-rata 49,36%, sementara yang dilapisi kaca film dengan VLT 72% dan 60 % mengalami penurunan daya berturut-turut -6,53 % dan -26,20% Kata Kunci : Daya Photovoltaik, Kaca film, Reduksi panas

Co-Authors Abdul Rajab Ahmad Ahmad Aminudin Sulaeman Axel Doriza Baharuddin Baharuddin Defri Wandi Didin Mujahidin Eka Fitrianto Eka Fitrianto Fajril Akbar Gumilang, Harry Hanalde Andre Haznam Putra Jefri Ramadhan Melda Latif Melda Latif Muhammad Imran Hamid Mujahidin, Didin Pinto Anugrah Pranata, Vegi Apria Prima Fithri Refdinal Nazir Riko Nofendra Riska Amalia Rusydi, Muhammad Ilhamdi Sulaeman, Aminudin Syafii . Vegi Apria Pranata Wahyu Prabowo Yudi Arfan Zuheldi Zuheldi Zulfahmi Zulfahmi Zulfahmi, Zulfahmi

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