PENGONTROLAN KECEPATAN MOTOR INDUKSI TIGA FASA MEDAN MAGNET SATURASI MENGGUNAKAN KONSEP VEKTOR KONTROL

• Main Author: TJAHJONO, NOOR
• Format: Theses
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/1598
• Institution: Institut Teknologi Bandung

Recently, induction motor is widely used in industry because of its advantages compared with direct current motor. The advantages of induction motor is low cost in operation and maintenance, compact, etc. However, beside of its advantages, induction motor is difficult to be controlled because of its non linearity and coupling problem between flux producing current and torque producing current components. By the vector control technique and the advanced of power electronics, the coupling problem in induction motor can be overcome so induction motor can be controlled easily as direct current motor. In this report, it is desired to control induction motor including the effect of saturation in main flux path. The saturation effect in induction motor is represented as nonlinear inductance magnetizing in motor model. Simulation result of saturated three phase induction motor (5 hp, 4 poles, 50 Hertz, 208 V/21 A) controlled by Proportional controller (for flux and torque component) and Proportional + Integral controller (for rotor speed) and compared with linear induction motor model gives rise time 0.038 sec., settling time (2 %) 0.047 sec. in saturated induction motor model and rise time 0.032 sec., settling time (2 %) 0.041 sec. in linear motor model for variable speed with constant load torque control condition. For constant speed with variable load torque control condition gives rise time 0.047 sec., peak time 0.05 sec., percent overshoot 0.55 %, settling time (2 %) 0. 057 sec. in saturated induction motor model and rise time 0.039 sec., peak time 0.041 sec., percent overshoot 0.93 %, settling time (2 %) 0. 048 sec. in linear induction motor model.