Design of PID Controllers for Speed Control of Three Phase Induction Motor Based on Direct-Axis Current (Id) Coordinate Using IFOC

Abstract

The use of three phase induction motor as the electric drive is very popular because of the cheaper price, robust construction, and free maintenance, but it has a characteristic that is not linear so it is hard in the control. Some of the developed methods are expected to obtain better control. This paper presents Indirect Field Oriented Control (IFOC) based on PID control used speed control of 3-phase induction motor. Using these controls can help get a better output response with a short time to reach the speed reference. The simulation result, Speed reference 700 Rpm needed 0.18 sec to achieve speed reference and 0.95 sec to a steady speed. Then 800 Rpm 0.19 sec to achieve speed reference and 0.88 sec to a steady speed, 900 Rpm 0.2 sec to achieve speed reference and 1 sec to a steady speed. The design of IFOC-PID control a have better system response, evidenced by a very short time to achieve speed reference and steady speed condition.