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Supari Supari, Supari
Magister Teknik Elektro, Fakultas Teknologi Industri Universitas Islam Sultan Agung Jl. Raya Kaligawe Km. 4 Semarang 50012
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Journal : Elektrika

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SIMULASI PENGATURAN KECEPATAN MOTOR INDUKSI 3 PHASA DENGAN DIRECT TORQUE CONTROL MENGGUNAKAN MATLAB Khasanah, Ulfatun; Supari, Supari; Heranurweni, Sri
Elektrika Vol. 9 No. 1 (2017): April 2017
Publisher : Universitas Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (864.46 KB) | DOI: 10.26623/elektrika.v9i1.1109

Abstract

Induction motors are widely used in the industrial world because they have many advantages, including construction that is very simple and strong, cheap, has high efficiency, quite good power factor, and maintenance is easier. Besides the advantages of induction motors also have weaknesses, one of the disadvantages of an induction motor is not being able to maintain its speed constantly if there is a change in load. If there is a change in load, the speed of the induction motor will decrease. One method of regulating the speed of an induction motor developed in addition to vector control is the Direct Torque Control (DTC) method. The DTC control technique allows direct and separate flux and torque settings and can be done without using a speed sensor. The estimated rotor rotation, torque and flux is carried out by the DTC which is inputted with stator voltage and current. To achieve the desired flux and torque estimation is used as feedback on the control system. In this final assignment, the speed regulation of the induction motor will be simulated using the DTC method using Matlab. The results obtained through the simulation show the length of time to reach the reference speed for speeds of 500rpm and 1000 rpm is around 0.5 seconds. Keywords : Induction motor, Direct Torque Control, Matlab.
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

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (911.057 KB) | DOI: 10.26623/elektrika.v11i1.1535

Abstract

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.
Co-Authors Al Amin, Anggara Fuad Andi Kurniawan Nugroho Ardina, Elfira Nureza Aryadi, Ricky Erlinasari, Erlinasari Hamdi Akhsan Harmini, Harmini Iskhaq Iskandar Khasanah, Ulfatun Melly Ariska Muhammad Irfan Nurma Gupita Dewi Putri, Jamiatul Khairunnisa Putriyani, Fena Siska Salat, Roy Saputra, Dian Nova Satria Pinandita Sianipar, Niko Ardiansa Sri Heranurweni Suhadi Suhadi Suhanda, Alfin Titik Nurhayati Wibawa, Tio Anta