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Journal : Jurnal Elementer (Elektro dan Mesin Terapan)

Rancang Bangun Soft Star Motor Induksi Tiga Fasa degan Metode Detektor Pengendalian Sudut Fasa Berbasis Mikrokontroler Syahrizal; Syamsir, Hendri Novia
Jurnal ELEMENTER (Elektro dan Mesin Terapan) Vol 9 No 2 (2023): Jurnal Elektro dan Mesin Terapan (ELEMENTER)
Publisher : Politeknik Caltex Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35143/elementer.v9i2.6096

Abstract

Induction motors are the most common type of motor used in industry and in households with several advantages including simple construction and easy maintenance. However, induction motors also have weaknesses, one of issue is use large starting currents in a short time which can cause voltage drops in the power grid. This research focuses on the design and manufacture of a soft starter in order to suppress the start current surge. The method used by control the firing angle of the triac using a trigger circuit that is controlled by an arduino with optocouper as the phase detector. By adjusting the ignition angle of the triac, the voltage during the motor starting process can be adjusted. In addition, this softstarter can adjust the length of time the motor starts from 0 volts to the nominal voltage. The instrument testing was carried out on a 3-phase induction motor with a power specification of 1HP and a nominal current of 2 A with a start time varying between 3 seconds, 7 seconds and 10 seconds. From the test results obtained a linear increase in the motor input voltage with respect to the time set. During the process of increasing the voltage, in the T phase there is a slight difference in value to the other 2 phases, but at the end of the starting process the voltages of the three phases return to the same value. Meanwhile, the starting current tends to follow a voltage increase by linear but fluctuating with starting current lowest than DOL starter method. Keywords: soft start, triac, trigger, arduino, phase angle, induction motor
Rancang Bangun Mesin Pengupas Kulit Kacang Tanah Dengan Mata Pisau Berbentuk Spiral Zaira, Jupri Yanda; Wijianto, Agus; Syahrizal; Taek, Oscar
Jurnal ELEMENTER (Elektro dan Mesin Terapan) Vol 9 No 2 (2023): Jurnal Elektro dan Mesin Terapan (ELEMENTER)
Publisher : Politeknik Caltex Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35143/elementer.v9i2.6120

Abstract

The main purpose of making a peanut skin peeling machine is to meet the needs of peanut shelling when farmers are in the harvest season in peanut-producing areas. This machine is expected to help the stripping process, so as to increase production efficiency and quality. The stages of making a peanut skin peeler machine consist of needs analysis, preparation of product technical specifications, product concept design aims to produce alternative product concepts, after the product concept is obtained, the next step is product design which is product concept development in the form of sketches into technical objects, the last step in making this machine to make product documents in the form of working drawing designs. The specifications of the peanut skin peeler machine are with a capacity of 29 kg/hour, machine dimensions 1375 mm long x 648 mm wide x 1318 mm high. Using a driving force in the form of a 5.5 HP, 3600 rpm gasoline motor, the peanut skin peeler machine frame uses an L elbow profile of 40 x 40 x 40 mm. The peanut sheller machine transmission system consists of several components, namely pulley, v-belt, shaft, bearings, gearbox, and gasoline motor. The transmission system that we will make is using a gearbox with a gearbox ratio of 30: 1 and a pulley ratio of 1: 1. It will slow down the speed of a gasoline motorbike from 3600 rpm to 120 rpm. The mechanism that works on the transmission system starts from the gasoline motor which is transmitted to the gearbox shaft and from the gearbox shaft to the paring knife shaft using a v-belt will be transmitted, the connecting shaft uses a v-belt, at the same time the pulleys that have been attached to the v-belt on the connecting shaft are redistributed towards the pulley shaft of the paring knife using a v-belt which is used to rotate the paring knife to peel the skin of the peanuts.