ANALYSIS OF IMPLEMENTATION OF VFD CONTROLLER IN PADDY DRYING MACHINE PROTOTYPE
Mindit Eriyadi, Dani Usman, Yuda Muhammad Hamdani, Sarosa Castrena Abadi, Aris Suryadi

Politeknik Enjinering Indorama

Abstract

The prototype of the paddy drying machine is a device used for paddy dryers that are not weather dependent. The driver of this prototype paddy drying machine uses ½ HP induction motor as its main mover. To be able to adjust the induction motor rotation, the writer uses the Variable Frequency Drive (VFD) brand LS iC5 with 1 HP power. The rotation needed to rotate the load can be done by changing the frequency and voltage so that the rotation speed of the induction motor can be adjusted as needed. From the testing of a no-load induction motor with a frequency adjustment range from 5 Hz to 13 Hz, the induction motor speed is 142.8 rpm to 375.3 rpm. The measured voltage is 76.5 V to 116.7 V and the measured current is 2.5 A to 1.6 A. From the results of the test of a no-load induction motor it can be concluded that the Frequency to voltage ratio is directly proportional while the frequency to current ratio is inversely proportional. In testing induction motors with a frequency adjustment range from 5 Hz to 9 Hz, they produce the same conclusions as those of no-load induction motors. VFD is certainly appropriate to be used as a speed regulator as needed.

Keywords: Induction Motor, Variable Frequency Drive (VFD), Speed Control, Motor rotation

Topic: Electrical Engineering