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Sistem Pengaman Motor Induksi 3 Phasa Terhadap Gangguan Unbalance Voltage Dan Overload Indhana Sudiharto,
Teknika Vol 10, No 2 (2009)
Publisher : Teknika

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Abstract

Motor induksi 3 phasa merupakan jenis motor yang paling sering digunakan pada proses produksi di industri. Hal ini dikarenakan motor induksi memiliki beberapa keuntungan yang tidak dimiliki oleh motor DC, tetapi motor induksi 3 phasa sering mengalami terjadi gangguan Unbalance Voltage dan Overload. Gangguan tersebut mempunyai dampak yang sangat berbahaya bila dibiarkan berlarut-larut,  karena arus yang mengalir sangat besar sehingga meningkatkan suhu dan dapat mengakibatkan motor induksi 3 phasa terbakar.Untuk mengatasi gangguan, maka diperlukan suatu sistem yang dapat mengamankan dari Unbalance Voltage sesuai standar ANSI Std C84.1–1989 dan Overload sesuai standar name plate Overcurrent Protection Relay CKR Series. Sistem pengaman bekerja dengan membandingkan nilai setting dan parameter tegangan serta arus yang disensor dari motor induksi 3 phasa sebagai beban. Dari pengujian sistem pengaman Unbalance Voltage dan Overload yang bekerja dengan membandingkan nilai setting  antara arus 1.5 Ampere sampai 5 Ampere maka didapatkan prosentase error rata-rata 3.44 % untuk waktu trip kontaktor pada pengaman Overload dan tegangan antara 360 Volt sampai 380 Volt dengan prosentase Unbalance Voltage antara 0 % sampai 10.95 % pada pengaman Unbalance Voltage. The 3 phase induction motor is a motor type most often used in production processes in industry. This is because the induction motor has several advantages that are not owned by a DC motor, but often also occur among other disturbance Unbalance Voltage and Overload in the 3 phase induction motor. The disturbance has a very harmful impact if allowed to drag on due to a very large current flow there by increasing the temperature and can lead to 3 phase induction motor burn. To overcome the interference, we need a system that can secure from Unbalance Voltage according to the standard ANSI Std C84.1-1989 and Overload Protection Relay Over current with name plate CKR Series. The security system works by comparing the value set point and voltage and current parameters of the outtakes from the 3 phase induction motor as load. From testing the security system Unbalance Voltage and Overload that works by comparing the current value of set point between 1.5 Ampere to 5 Amperes then obtained an average percentage error 3.44 % for the time trip on security contactors Overload and voltage between 360 Volts to 380 Volts with a percentage Unbalance Voltage between 0 % to 10.95 % in Unbalance Voltage safety.
Rancang Bangun Alat Penguji Karakteristik Pengaman Arus Lebih Berkapasitas Maximum Sutedjo, ; Indhana Sudiharto,
Teknika Vol 11, No 1 (2010)
Publisher : Teknika

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Abstract

Abstrak Mini Circuit Breaker (MCB) dan Thermal Over Load(TOR) merupakan pengaman gangguan arus lebih pada jaringan listrik, karena MCB dan TOR memiliki kinerja yang baik untuk mengamankan jaringan listrik dari gangguan arus lebih. MCB maupun  TOR perlu diuji secara berkala untuk mengetahui karakteristik kondisi terbaru peralatan tersebut. Sehingga dapat diketahui karakteristik waktu kerja yang baru. Prinsip utama pengujian karakteristik MCB atau peralatan pengaman arus lebih yang lain  adalah mengalirkan arus  yang bervariasi ke peralatan tersebut, sehingga akan diketahui karakteristik waktu kerjanya. Pada umumnya pengujian karateristik MCB melakukan pembebanan secara manual, merubah arus dengan cara merubah beban dan menghitung waktu dengan pencatat waktu secara terpisah. Pada penelitian ini dibuat rangkaian pengontrol gelombang penuh satu fasa yang difungsikan sebagai peralatan penguji karakteristik pengaman arus lebih yang bekerja secara otomatis. Rangkaian yang dapat digunakan rangkaian pengontrol gelombang penuh satu fasa dengan beban resistif. Komponen utama adalah dua buah SCR (Silicon Controlled Rectifier) yang dirangkai secara bidirectional. Dan mikrokontroller sebagai pengatur besarnya arus yang diinjeksikan dan mencatat waktu kerja/trip peralatan yang diuji
Load Identification Using Harmonic Based on Probabilistic Neural Network Anggriawan, Dimas Okky; Amsyar, Aidin; Prasetyono, Eka; Wahjono, Endro; Sudiharto, Indhana; Tjahjono, Anang
EMITTER International Journal of Engineering Technology Vol 7, No 1 (2019)
Publisher : Politeknik Elektronika Negeri Surabaya (PENS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (529.473 KB) | DOI: 10.24003/emitter.v7i1.330

Abstract

Due to increase power quality which are caused by harmonic distortion it could be affected malfunction electrical equipment. Therefore, identification of harmonic loads become important attention  in the power system. According to those problems, this paper proposes a Load Identification using harmonic based on probabilistic neural network (PNN). Harmonic is obtained by experiment using prototype, which it consists of microcontroller and current sensor. Fast Fourier Transform (FFT) method to analyze of current waveform on loads become harmonic load data. PNN is used to identify the type of load. To load identification, PNN is trained to get the new weight. Testing is conducted To evaluate of the accuracy of the PNN from combination of four loads. The results demonstrate that this method has high accuracy to determine type of loads based on harmonic load
Adaptive charging control using ANN-PID controllers on multiple DC loads with varying battery voltages Indhana Sudiharto; Farid Dwi Murdianto; Ayu Wulandari
International Journal of Power Electronics and Drive Systems (IJPEDS) Vol 13, No 1: March 2022
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijpeds.v13.i1.pp620-630

Abstract

Various rechargeable electronic devices currently have batteries with different capacities and voltages, while the available chargers are generally fixed for one device. This is considered less effective because different types of electronic devices will require different battery chargers. Therefore, the adaptive power charge is needed to recharge batteries with different voltages and capacities through a single port by adjusting the type of load connected. This system uses buck converter with duty cycle settings through microcontrollers to lower the input voltage to variable output voltage. When the load is connected, the limit switch will be depressed and the system will start the duty cycle tracking process. The voltage will be increased gradually until the current is read at a certain value to identify the load. After the current reads the duty cycle stops tracking, then the current and voltage characteristics are used as input variables for the artificial neural network (ANN) algorithm to determine the target setpoint voltage to be executed by the proportional, integral and derivative (PID) controller. The designed adaptive power charge can identify the connected load accurately. The average ANN output error is 1.46e-4% and the average PID controller error is 6.4e-2%. The system can reach a steady state at 0.01 s.
Shunt Active Power Filter Untuk Peredaman Harmonisa Pada Inverter V/F Konstan Pengatur Kecepatan Motor Induksi Tiga Fasa Fahmi Naufala Mumtaz; Indhana Sudiharto; Ony Asrarul Qudsi
Jurnal Teknologi Terpadu Vol 9, No 2 (2021): JTT ( Jurnal Teknologi Terpadu)
Publisher : Pusat Penelitian dan Pengabdian Kepada Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32487/jtt.v9i2.1176

Abstract

Pengemudian elektrik untuk motor induksi tiga fasa mampu menghemat biaya operasional di industri. Metode V/F konstan adalah pengaturan yang hanya mengatur besaran tegangan dan frekuensi pada motor induksi tiga fasa. Pada saat yang sama, inverter V/F konstan dapat menyebabkan harmonisa pada saat melakukan pengemudian elektrik dan harmonisa ini akan mengurangi faktor daya dengan meningkatkan total harmonic distortion (THD). Kehadiran harmonisa dalam sistem dapat berdampak negatif pada sistem tenaga dan dapat berpotensi merusak peralatan. Dalam artikel ini diusulkan suatu filter aktif yang mampu mengurangi harmonisa pada inverter V/F pengatur kecepatan motor. Filter aktif yang digunakan adalah jenis shunt active power filter (SAPF) dengan pengontrol injeksi arus berupa PWM Hysteresis Current Control dan pengontrol DC-link Voltage menggunakan Fuzzy Logic Controller (FLC). Hasil simulasi menunjukkan bahwa sebelum pemasangan SAPF, nilai THDi yang dihasilkan oleh inverter V/F masih belum memenuhi standar yang ditoleransi oleh IEEE 519 yaitu kurang dari 5%. Ketika menggunakan PI-SAPF, THDi yang dihasilkan bisa kurang dari 2,75% baik pada motor 370 W, 4000 W, maupun 7500 W. Sedangkan FLC-SAPF dapat meredam harmonisa lebih baik lagi, THDi yang dihasilkan kurang dari 0,6% baik pada motor 370 W, 4000 W, maupun 7500 W.
RANCANG BANGUN DYNAMIC VOLTAGE RESTORER (DVR) GUNA MENGURANGI TEGANGAN SAG DENGAN KENDALI LOGIKA FUZZY BERBASIS MIKROKONTROLER Deriz Caesar Okinanto; Indhana Sudiharto; Yahya Chusna Arif
Prosiding SNST Fakultas Teknik Vol 1, No 1 (2015): PROSIDING SEMINAR NASIONAL SAINS DAN TEKNOLOGI 6 2015
Publisher : Prosiding SNST Fakultas Teknik

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Abstract

Gangguan tegangan sag dapat merugikan hingga tujuh kali lipat dibandingkan dengankerugian yang timbul gangguan kualitas daya lainnya. Untuk meminimalisir gangguantegangan sag, maka didesain suatu sistem Dynamic Voltage Restorer. Prinsip kerja DynamicVoltage Restorer (DVR) yaitu mendeteksi tegangan sag menggunakan sensor tegangan ACdengan menggunakan metode pembagi tegangan 2 kapasitor dengan resistansi 330kΩ dan220Ω, kemudian di klamper sehingga tegangan menjadi DC. Sensor tegangan terhubungdengan ADC pada mikrokontroler ARM STM32F407VG yang digunakan untuk mengontrolinjeksi tegangan. Ketika terjadi tegangan sag, maka inverter menginjeksi tegangan DC darisumber kapasitor ke beban yang terkena gangguan dengan menggunakan boostertransformator yang dihubung seri dengan tegangan sumber dan beban induktif. Inverter 1 fasadikendalikan menggunakan logika fuzzy berbasis mikrokontroler untuk mendeteksi magnitudetegangan sag.Kata kunci: Dynamic Voltage Restorer, Fuzzy logic controller, Single Phase Inverter.
RANCANG BANGUN SISTEM MONITORING BEBAN DAN INDIKATOR GANGGUAN PADA RUMAH MANDIRI BERBASIS MIKROKONTROLLER Donny Prasetyo Santoso; Indhana Sudiharto; Suryono Suryono
Prosiding SNST Fakultas Teknik Vol 1, No 1 (2015): PROSIDING SEMINAR NASIONAL SAINS DAN TEKNOLOGI 6 2015
Publisher : Prosiding SNST Fakultas Teknik

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Abstract

Pengembangan pada sistem pembangkit energi tenaga surya saat ini berkembang sangat pesat. Tuntutan karena adanya keterbatasan sumber daya yang tidak dapat diperbaruhi,membuat panas dari matahari mulai digunakan sebagai  sumber listrik. Pada sistem kelistrikan rumah mandiri ini berasal solar cell sebagai sumber energi alternatif yang digunakan sebagai charging baterai/accu. Dari accu yang dipasang 3seri+3parallel dihasilkan tegangan maksimal sebesar 96 volt DC(Direct Current) atau arus searah. Sistem monitoring rumah mandiri ini menggunakan sensor tegangan dan sensor arus sebagai konversi nilai ADC agar bisa terbaca oleh mikrokontroller. Sistem yang dimonitoring adalah kondisi baterai,energi charging yang terpakai,energi yang terpakai pada beban dan sistem pengaman tegangan lebih dan tegangan jatuh yang berupa relay yang diatur menggunakan mikrokontroller,sehingga apabila terjadi gangguan pada sistem arus searah maupun sistem AC(Alternating Current) atau arus bolak-balik tidak sampai merusak beban arus searah yang berupa lampu LED dan  beban arus bolak-balik yang berupa kipas angin. Pada pengujian sensor arus,error terbesar dari perbandingan DC Supply dan pembacaan TFT(Thin Film Transistor) adalah 2,3% sedangkan pada sensor tegangan error terbesar adalah 2,2%. Kata kunci: Arus,kWh meter,Sistem Monitoring,Tegangan
Load Identification Using Harmonic Based on Probabilistic Neural Network Dimas Okky Anggriawan; Aidin Amsyar; Eka Prasetyono; Endro Wahjono; Indhana Sudiharto; Anang Tjahjono
EMITTER International Journal of Engineering Technology Vol 7 No 1 (2019)
Publisher : Politeknik Elektronika Negeri Surabaya (PENS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (529.473 KB) | DOI: 10.24003/emitter.v7i1.330

Abstract

Due to increase power quality which are caused by harmonic distortion it could be affected malfunction electrical equipment. Therefore, identification of harmonic loads become important attention  in the power system. According to those problems, this paper proposes a Load Identification using harmonic based on probabilistic neural network (PNN). Harmonic is obtained by experiment using prototype, which it consists of microcontroller and current sensor. Fast Fourier Transform (FFT) method to analyze of current waveform on loads become harmonic load data. PNN is used to identify the type of load. To load identification, PNN is trained to get the new weight. Testing is conducted To evaluate of the accuracy of the PNN from combination of four loads. The results demonstrate that this method has high accuracy to determine type of loads based on harmonic load
DESAIN SPWM SINGLE PHASE FULL BRIDGE INVERTER PADA SISTEM UNINTERRUPTIBLE POWER SUPPLY 500W Indra Ferdiansyah; Indhana Sudiharto; Epyk Sunarno; Mahbub Gusti Muhammad
Jurnal Arus Elektro Indonesia Vol 7 No 1 (2021)
Publisher : Fakultas Teknik, Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/jaei.v7i1.23438

Abstract

Indonesia has sufficient power resources provided by PLN. However, blackouts still occur frequently due to several reasons, such as disruption in transmission and distribution, especially when the weather is raining. This has an impact on customer inconvenience. To overcome this, several houses have used a backup power source in the form of a generator set that will be operated by a blackout. This solution turns out to cause noise that can interfere with user comfort. To increase user convenience, a system (Uninterruptible Power Supply) is proposed. The system there is a voltage sensor to detect a power outage. In addition, there is an SSR switch so that it can to switch main source to the UPS with a fast response time during a blackout. The inverter on UPS system uses the SPWM technique to produce a sine wave output, then the use of an LC filter to reduce ripple on the system. PID-based voltage control is used to maintain the output inverter by the setting value of magnitude amplitude. Based on the results of the test, the UPS can work during a blackout with a maximum power of 500W and the voltage constant at 215V. Keywords — Blackout, PI Controller , SPWM, UPS.
Design of a Single Phase HERIC-SPWM Farid Dwi Murdianto; Indhana Sudihato; Anang Budi Karso; Wildana Zulfa
INTEK: Jurnal Penelitian Vol 9, No 1 (2022): April 2022
Publisher : Politeknik Negeri Ujung Pandang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31963/intek.v9i1.2995

Abstract

Development in the field of technology has experienced rapid development in recent years, especially in inverter. Every year the development of inverters is very fast starting from full bidge inverters to HERIC inverters, inverters are usually used to convert DC voltage to AC, HERIC inverters are modifications of full bidge inverters with 2 additional IGBTs on the output side, therefore this paper will discuss about inverter design. HERIC SPWM 1 phase.The HERIC inverter will be compared with full bridge inverters to find out the advantages of these modifications. The modulation technique here uses SPWM (sinusoidal pulse width modulation) modulation technique as the switching process. IGBT switching on the HERIC inverter to produce the desired output waveform. The methodology for making a 1-phase HERIC SPWM inverter using a source from the PLN road network which will then be rectified by the rectifier. The rectifier output of 311 vdc will then be converted into AC voltage with output by the HERIC inverter.So that by making this single-phase HERIC SPWM inverter it is possible to be efficient and produce the power supply that will be used.