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All Journal Elektron Jurnal Ilmiah Jurnal Teknik Elektro
Valdi Rizki Yandri
Politeknik Negeri Padang
Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Energy Engineering Mechanical Engineering

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Perkiraan Tegangan Lewat Denyar Isolator Tegangan Menengah 20 kV Keramik dan Resin Epoksi berdasarkan Data Arus Bocor Valdi Rizki Yandri; Herisajani Herisajani; Fitriadi fitriadi
Elektron : Jurnal Ilmiah Volume 11 Nomor 1 Tahun 2019
Publisher : Teknik Elektro Politeknik Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (691.442 KB) | DOI: 10.30630/eji.11.1.98

Abstract

This paper explains the research results of leakage current data and estimation of flashover voltage on ceramics and epoxy resin as 20 kV outdoor insulator in a chamber with tropical climate conditions. The waveform of leakage current (LC) was measured using a digital oscilloscope. The digital data was transferred to a personal computer using a RS-232 cable. The digital data was analyzed using Fast Fourier Transform. The result showed that LC was affected by various environment conditions like temperature, humidity and pollution. LC of ceramics insulator was higher than epoxy resin insulator in low temperature, high humidity and high pollution condition.
Analisis Paralelisasi Konverter Melalui Multi Input - Single Output Transformator Frekuensi Tinggi dengan MatLab Simulink Fitriadi Fitriadi; Valdi Rizki Yandri; Herisanjani Herisanjani
Elektron : Jurnal Ilmiah Volume 12 Nomor 2 Tahun 2020
Publisher : Teknik Elektro Politeknik Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30630/eji.12.2.162

Abstract

Two parallel converters DC/AC with isolated control can be applied by a high frequency transformer with a switching pattern. However, the switching pattern and control technique of the converter needs more research so the process of electrical energy distribution on the parallel output side can produce the optimum value. Furthermore, in this research, parallelization method is applied by utilizing two converters in high frequency transformer with multi input-single output capability controlled by Matlab/Simulink. The input side of transformer consists of two full bridge converters while secondary side represents the parallelization of output side. Two converters DC/AC is simulated by phase shifted full bridge (PSFB) of switching pattern and voltage mode control (VMC) technique. The distribution condition of optimum energy is investigated by observation of influences of ON condition duration of each switching period cycle on input converter to ON condition duration of secondary transformer terminal. The ON condition duration of each converter with switching PSFB is the condition depends on shifted/delay phase of signal on gate control. According to this simulation, optimum ON condition occurs when shifted/delay phase of each gate control signal converter is 135° (α1=α2=135°) and this condition is more efficient than phase of gate control signal is 45° (α1=α2=45°). The simulation results show that larger α of converters give the optimum distribution.
STUDI KELAYAKAN PERALATAN PADA INSTALASI PANEL KONTROL DI BENGKEL TEKNIK LISTRIK, POLITEKNIK NEGERI PADANG Desmiwarman Desmiwarman; Valdi Rizki Yandri
Jurnal Teknik Elektro Vol 5, No 1 (2016): Jurnal Teknik Elektro
Publisher : Situs resmi ITP Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (193.335 KB)

Abstract

Panel circuit is an equipment which can receive electrical energy and subsequently distribute and control the distribution of electrical energy through the circuit main panel and branch into panel circuit branches or directly via the circuit end to the load in the form some point the lights and through the box- contact to equipment utilization of electricity inside the building. Planning methods to repair Panel circuit is composed of several stages, namely (1) Calculate the power used on each wall of the practice, (2) Selection of rating safety MCB and CRC cable, (3) The design of the power circuit and the control circuit for the panel, (4) Sort the numbering of the cable to the output sockets on each wall of the practice (5) Preparationof a series on the panel (6) Testing.Panel circuit in electrical repair shop is designed based on the layout of the walls of the practice. Keluran of the panel for this circuit is 24 Sockets 3 phase on each wall of the practice, which is used to load a practice wall, namely the installation of lighting and power installation.
STUDI PENENTUAN FAKTOR DOMINAN PENYEBAB GANGGUAN SALURAN UDARA TEGANGAN MENENGAH (SUTM) DI WILAYAH KERJA PT. PLN (PERSERO) RAYON KAYU ARO DENGAN MENGGUNAKAN REGRESI LINEAR SPSS Valdi Rizki Yandri; Nes Yandri Kahar
Jurnal Teknik Elektro Vol 4, No 1 (2015): Jurnal Teknik Elektro
Publisher : Situs resmi ITP Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (295.425 KB)

Abstract

Sistem distribusi tegangan menengah adalah saluran listrik listrik yang tidak dapat dihindari dari gangguan yang disebabkan oleh beberapa faktor. Gangguan ini akan mempengaruhi banyak kerugian bagi PLN Corporation sebagai pemasok energi listrik. Selain itu, efek gangguan pada sistem distribusi tegangan menengah kuantitatif dinyatakan dalam panjang padam (dalam jam) dan kerugian energi (kWh di). Dalam rangka mengurangi nilai kerugian, penelitian ini telah dilakukan untuk menggambarkan faktor dominan yang dapat meminimalkan pemadaman. Penelitian ini menggunakan data gangguan listrik di wilayah kerja PLN Perusahaan Kayu Aro pada tahun 2012 hingga 2014. Ada delapan faktor yang dapat menyebabkan gangguan listrik, yaitu komponen sistem distribusi, distribusi transformator, menara, pohon, pihak ketiga, hewan, layang-layang dan faktor tak dikenal . Berdasarkan analisis statistik dengan menggunakan software SPSS, dapat disimpulkan bahwa faktor dominan yang pohon, faktor tak dikenal dan komponen sistem distribusi. Tindakan yang dapat dilakukan untuk mengatasi gangguan ini adalah sistem distribusi inspectio, terutama untuk transformator dan distribusi komponen.
Pengujian Superkapasitor Berbasis Sodium Alginat Saat Pengisian dan Pengosongan Muatan Listrik Valdi Rizki Yandri
Jurnal Teknik Elektro Vol 7, No 1 (2018): Jurnal Teknik Elektro
Publisher : Situs resmi ITP Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (454.112 KB)

Abstract

Tujuan penelitian ini adalah untuk membuat prototipe supercapacitor sebagai penyimpan energi dengan menggunakan sodium alginat untuk elektroda dan untuk mengukur voltase pada supercapacitor dengan menggunakan Arduino saat terhubung ke sumber tegangan. Tegangan supercapacitor diukur dalam proses pengisian dan pengosongan dimana prototipe supercapacitor terdiri dari kolektor, elektroda dan pemisah arus. Selanjutnya, metode sintesis elektroda adalah pisau dokter dengan grafit, natrium alginat dan polivinil alkohol (PVA) sebagai bahan baku. Fiberglass dengan ketebalan 0,5 mm digunakan sebagai pemisah dan aluminium dengan ketebalan 1 mm digunakan sebagai kolektor arus. Pengukuran data dan analisis perhitungan menunjukkan bahwa kapasitansi prototipe supercapacitor adalah 0.832 - 1.111 F berdasarkan data muatan dan 0.845 - 1.038 F berdasarkan data debit.
RANCANG BANGUN ALAT PENGGULUNG KAWAT EMAIL UNTUK KUMPARAN MOTOR MENGGUNAKAN MIKROKONTROLLER ATMEGA328 SEBAGAI UNIT PENGENDALI Valdi Rizki Yandri; Desmiwarman Desmiwarman
Jurnal Teknik Elektro Vol 5, No 1 (2016): Jurnal Teknik Elektro
Publisher : Situs resmi ITP Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (163.34 KB)

Abstract

Application of automation in the production process at this point is very helpful, easy and can be used to cover the human limitations in increasing the productivity better. Application of automation is very suitable for secondary industry, because, automation is inexpensive and can be realized only with a computer device can even be stored on a chip that stores various kinds of commands as a controller equipment you want to control, of course, with the right program. One application can be applied to the coil wire roller by utilizing the microcontroller ATmega328 as the unit will store the control command to specify the amount of the roll, set the pace rolling, and stop rolling. With the keypad as the input number of reels, set the speed of the rolling process by using pot to change the value of the PWM, and a limit switch as a unit calculating the number of rolls, after the suppression amount is equal to the value of the limit switch input, the process will stop. Once embodied in a tangible form, this tool can work well, the input values 25 rolls dihasilkann much as 25 rolls with PWM 150, but a mechanical fault suppression limit switch occurs at high speed, the difference between the input value and the results can be within 4 pieces of excess rolls the PWM value of 255
Co-Authors Desmiwarman Desmiwarman Fitriadi fitriadi Herisajani Herisajani Herisanjani Herisanjani Nes Yandri Kahar