PENGATURAN KECEPATAN MOTOR INDUKSI 3 PHASE MELALUI DTC MENGGUNAKAN SLIDING MODE CONTROL

In this final project develop a methods of three phase induction motors speed control through Direct Torque Control (DTC) using a sliding mode control (SMC). By using DTC methods that are implemented directly through a PC with matlab simulink connected on PCI 1710 device. PCI 1710 is used as a tool for inverter gate signal and an input signal from the sensors to estimate by the software matlab simulink. Three phase AC source converted to dc source by rectifier circuit. DC source as input inverter will convert to AC source to supply three phase induction motor. From the system hope speed of three phase induction motor will be constand trough the a sliding mode controller. From experiment result overshoot 6.344rad/s, rise time 0,0197Sec and settling time 0.14Sec when starting condition and overshoot 2.5418 rad/s, rise time 0,0113Sec and settling time 0.09Sec in variable load condition

Pengaturan Kecepatan Motor Induksi Tanpa Sensor Kecepatan Menggunakan Metode Self-Tuning Fuzzy Sliding Mode Control Berbasis Direct Torque Control

Metode pengaturan kecepatan putar motor induksi tanpa sensor menggunakan fuzzy logic sliding modecontroller(FLSMC) dijelaskan dalam paper ini,. Direct torque control (DTC) digunakan sebagai basis estimasiparameter kontrol. Estimasi putaran rotor, torka dan fluks dilakukan oleh DTC yang diberi input tegangan danarus stator. Untuk mencapai putaran yang dikehendaki digunakan estimasi putaran sebagai umpan Balik padasistem kontrol. Error dan delta error kecepatan putar sebagai masukan pada Sliding Mode Control (SMC) danjuga sekaligus sebagai masukan bagi Fuzzy Logic (FL). Fungsi FL adalah sebagai tuning nilai parameter SMC.Hasil yang diperoleh melalui simulasi menunjukkan respon kecepatan putar yang cepat dalam kondisi start,Perubahan beban dan Perubahan set point. Khusus pada kondisi Perubuhan beban, respon kecepatan hampirtidak mengalami Perubahan kecepatan atau bisa dikatakan respon kecepatan kokoh bila ada gangguan

Pengendali Sliding Mode Control (SMC) Motor Induksi 3 Phasa Dengan Metode Direct Torque Control (DTC) Menggunakan Algoritma Genetika

In this research the Genetic Algorithm has been implemented to find the optimum parameters of a Sliding Mode Controller (SMC) built for a three phase induction motor with a Direct Torque Control (DTC). A d-q model of a 7.5 kW, 10 HP, 415 Volt, 1450 RPM motor driven by an inverter and a Space Vector Pulse Width Modulation (SVPWM) control has been used as the control system's plant. A DTC estimator is the subsystem for computing the estimation of the torque error, the flux angle and the d-q axis flux angle. The SMC subsystem calculates the reference torque from the angular speed error. From the experiment using the d-q model of the motor without any control, it has been shown that an additional torque as much as 20 Nm reduces the motor speed up to 26.06%, while a 10 Nm torque reduction increases the motor speed up to 11.74%. The DTC eliminates the speed variations due to the torque disturbance, with the maximum overshoot of 6 to 12 %, and the settling time of 0,8 to 1,6 seconds. Using the SMC with parameters optimized by the Genetic Algorithm, the maximum overshoot is reduced up to only 1.9 to 2.9 %, and the settling time is reduced up to only 0,08 to 0,09 seconds. For a variable speed operation, the control system has made it possible to limit the error up to only 0,03 % for the nominal speed operation at 1450 RPM, but the error increases almost proportionally as the speed decreases when the motor is operated at the lower than nominal speed operation, i.e. 0,08 % at 725 RPM and 0,27 % at 362,5 RPM