SIMULASI KENDALI TORKA LANGSUNG PADA MOTOR INDUKSI 200HP 50HZ
Abstract
Abstrak
Motor induksi merupakan mesin konversi dari listrik ke mekanik. Pada umumnya pengendalian kecepatan putar dilakukan pada tegangan masukannya. Akan tetapi kendali tersebut mempunyai beberapa kelemahan, yaitu sistem akan membangkitkan slip dan kecepatan putar sistem akan menurun saat terjadi pembebanan lebih. Kelemahan dari sistem pengendalian tegangan ini dapat dihilangkan dengan menerapkan kendali pada torka rotor yang disebut kendali torka langsung. Skripsi ini akan dilakukan simulasi kendali kecepatan putar motor induksi dengan teori Direct Torque Control (DTC). Simulasi akan dilakukan menggunakan Matlab-simulink dengan menentukan nilai referensi kecepatan putar untuk mendapatkan respon performa motor induksi. Hasil simulasi pada sistem kendali torka langsung pada motor induksi tiga fasa dengan metode Direct Torque Control (DTC) mempunyai respon yang baik. Berdasarkan gambar grafik dari hasil proses simulasi dengan Matlab-simulink pengendalian kecepatan putar motor induksi dengan metode DTC nilai aktual mendekati nilai referensinya dengan nilai magnituda yang tetap.
Kata Kunci: Motor Induksi, Direct Torque Control (DTC), Matlab-simulink
Abstract
Induction motor is a machine that converts from electricity to mechanics. In general, rotational speed control is carried out at the input voltage. However, this control has several weaknesses, namely the system will generate slip and the rotational speed of the system will decrease when overloading occurs. The weakness of this voltage control system can be eliminated by applying a control on the rotor torque called direct torque control.
This thesis will simulate the rotational speed control of an induction motor with the theory of Direct Torque Control (DTC). Simulation will be carried out using Matlab-simulink by determining the reference value for rotational speed to get the performance response of the induction motor.
The simulation results on a direct torque control system on a three-phase induction motor with the Direct Torque Control (DTC) method have a good response. Based on the graphic image of the results of the simulation process with Matlab-simulink, controlling the rotational speed of the induction motor with the DTC method, the actual value approaches the reference value with a fixed magnitude value.
Keywords: Induction Motor, Direct Torque Control (DTC), Matlab-simulink
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