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Abstrak :
Dalam tesis ini diuraikan tentang perancangan rangkaian kontrol kecepatan motor induksi AC tiga fasa menggunakan algoritma space vector dan pengendali PI dengan metode v/f konstan berbasis microcontroller AVR tipe Atmegal6.Dalam penelitian ini dicoba aplikasi metode Vlf konstan untuk optimasi parameter-parameter dalam pengendali PI (Proportional integral) untuk mengatur kecepatan motor induksi AC tiga fasa tanpa beban. Dalam percobaan, digunakan sensor kecepatan dari motor dc 12 volt yang difungsikan sebagai generator yang dihubungkan kerangkaian op-amp. Keluaran tegangan Op-Amp dihubungkan ke ADC microcontroller sebagai sinyal feedback dari kecepatan aktual motor AC tiga fasa. Sebagai pengendali PI digunakan microcontroller ATMegal6 untuk mencari watak kalang terbuka motor induksi ac tiga fasa. Kemudian secara empiris dicari fungsi alih motor tersebut. Setelah didapatkan kemudian ditentukan spesifikasi kinerja sistem kendali PI pada motor AC tiga fasa untuk menentukan besaran Kp, Ki, 0, dan z untuk kemudian diaplikasikan ke sistem tersebut. Pengujian dilakukan untuk setpoint bermanufer dari 480 rpm ke 1080 rpm, kemudian dari 1200 rpm ke 480 rpm. Berdasarkan basil penelitian menunjukkan bahwa sistem kendali PI untuk kecepatan motor AC tiga fasa dapat dikendalikan untuk mencapai kondisi stabil, jika manuver set point di bawah spesifikasi kinerja kecepatan nominal motor AC tiga phasa yaitu 900 rpm.

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This thesis describes speed control design of three phase ac induction motor using the space-vector algorithm and controller PI with constant vlf method based on microcontroller avr type atmegal 6. In this research tried the application of method Vlf constant for optimization of parameters in controller PI ( integral Proportional) to arrange speed of AC induction motor triphase at no load condition. On experiment, applied speed censor from 12 volts d.c.motor functioned as generator connected by circuit op-amp. Output voltage Op-Amp interfaced to ADC microcontroller as signal feedback from actual speed of triphase AC induction motor. PI controller applied to microcontroller ATMegaI6 in searching open loop character of threephase AC induction motor. Then in empiric is searched transfer function of the motor. After that, determined specification of control system performance PI at triphase AC motor to determine magnitude Kp, Ki, 0, dan z , and then is applicated to the system. Testing system is done for setpoint manuver from 480 rpm to 1080 rpm, and then from 1200 rpm to 480 rpm. Based on the result of research indicates that control system PI for speed of triphase AC motor can be controlled to reach stable condition, if maneuver set point under specification of three phasa AC motor nominal speed performance is 900 rpm.

Abstrak :
This research described about speed control of three phase AC induction motor using the space - vector algorithm and proportional integral controller with constant v/f (volt/Hz) methods based on microcontroller typ e atmega 16. To determine parameters in proportional integral controller used constant v/f method as speed controller of three phase AC introduction motor. On experiment, applied speed censor from 12 volts d.c. motor functioned as generator connected by op-amp circuit. Output voltage Op-Amp interfced to ADC microcontroller as signal feedback from actual speed of of triphase AC induction motor. Then in empiric is searched transfer function of the motor. After that, determined specification of control system performance proportional integral at triphase AC motor to determine magnitude Kp (proportional gain). Ki (Integral gain) , 0(dead time) dan t(time constants), and then is applicated to the system. Testing system is don for setpoint manevver from 480 rpm to 1080 rpm, and then from 1200 rpm to 480 rpm . Based on the motor can be controller system proportional integral for speed of triphae AC motor can be controlled to reach stable condition, In maneuver set point under specification of nominal speed performance of three phasa AC induction motor.

Abstrak :
Konfigurasi multi-motor terhubung paralel dengan inverter tunggal memiliki kelebihan dari segi efisiensi dan bentuk yang ringkas sehingga direkomendasikan untuk penggunaan pada kendaraan listrik. Kebutuhan performa sistem penggerak untuk kendaraan listrik mensyaratkan performa dinamik dengan respon torsi yang cepat, efisiensi tinggi pada keadaan transien maupun steady-state, dan dapat beroperasi pada berbagai kondisi medan kendaraan. Agar memenuhi persyaratan performa tersebut, penelitian ini mengkombinasikan Kendali Torsi Langsung Modulasi Vektor Ruang atau Direct Torque Control Space Vector Modulation DTCSVM dan Observer Kecepatan Adaptif untuk Kendali Motor Parallel dengan Inverter Tunggal. Implementasi DTC SVM diharapkan dapat memberikan respon torsi yang cepat dengan rugi rugi steady state akibat ripple torsi dan fluks yang minimum. Agar sistem dapat beroperasi pada berbagai medan kendaraan, eliminasi sensor kecepatan dapat menambah mechanical robustness dari sistem. Untuk memungkinkan hal tersebut, kendali speed sensorles dapat diimplementasikan menggunakan Observer Kecepatan Adaptif. Hasil uji simulasi dari sistem kendali yang dirancang menunjukan respon torsi dan fluks yang cukup cepat dengan ripple steady state yang rendah. Implementasi sistem kendali yang diusulkan dengan skema kendali paralel dasar yaitu kendali master slave dan kendali rata rata juga menunjukan respon yang stabil sesuai karakteristik dari masing masing skema pengendalian paralel motor

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ABSTRACT
Single inverter multi-motor SIMM drive system has attractive advantages in terms of efficiency and compactness that makes it recommended for electric vehicle traction system. The electric vehicle drive system has dynamic performance requirements such as fast torque response, high efficiency over wide range of speed, and able to operate at hostile environtment. To fulfill these requirements, this research combines Direct Torque Control Space Vecor Modulation DTC SVM and Speed Adaptive Observer to be implemented in SIMM control system. DTC SVM is implemented to achieve fast torque response with minimum loses ripple at steady-state caused. The elimination of speed sensor can improve mechanical robustness of the system so that the system is more robust to operate at hostile environtment. To realize speed sensorless control, Speed Adaptive Observer is implemented. The simulation result shows sufficently fast flux and torque response with minimum steady state ripple. The Speed Adaptive Observer can estimate the speed of the motors satisfactorily at certain speed range. The results of the implementation of the proposed control method with basic SIMM control schemes these are master slave control and mean or average control shows good response behaviour and confirms the characteristics of each SIMM control schemes

Abstrak :
ABSTRAK
Pengaturan arus kompensasi pada tapis aktif sistem tiga fasa empat lengan dengan menggunakan teknik modulasi vektor ruang dilakukan dengan mengatur vektor tegangan dan vektor tegangan referensi. Dalam modulasi vektor ruang maka model vektor tegangan berbentuk silinder tegak telah dikembangkan oleh Zhang dan beberapa peneliti lain.Peninjauan ulang model matrik pemetaan Akagi teori pq-pqr dengan metode rotasi sudut Euler menghasilkan vektor ruang tiga dimensi berbentuk silinder miring sehingga analisis parameter modulasi mengikuti analisis bentuk asimetri. Model vektor tegangan asimetri pada modulasi vektor ruang bersifat unik dalam menentukan vektor tegangan referensi, waktu pensaklaran dan duty cycle. Penentuan parameter modulasi seperti vektor tegangan referensi, duty cycle dan waktu pensaklaran dari model vektor tegangan asimetri menghasilkan harga yang sedikit berbeda dengan model silinder tegak.Modulator membangkitkan sinyal kendali pensaklaran tapis aktif sistem tiga fasa empat lengan bekerja berdasarkan modulasi vektor ruang asimetri dengan kombinasi kendali PI proportional integral dengan luaran berupa arus kompensasi mempunyai amplitudo sama dan polaritas berlawanan dengan arus beban.

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ABSTRACT
Current compensation controller on three phase four leg system active using space vector modulation technique is done by setting the voltage vector and the reference voltage vector. In vector space modulation, the upright cylindrically vector voltage model has been developed by Zhang and several other researchers.A review mapping matrix model of Akagi the pq pqr theory with Euler angular rotation method result a three dimensional the skewed cylindrical vector so that the analysis of modulation parameters follows asymmetrical form analysis. The asymmetrical voltage vector model in vector space modulation is unique in determining the reference voltage vector, switching time and duty cycle. Determination of modulation parameters such as reference voltage vectors, duty cycle and switching time of the asymmetrical voltage vector model result a slightly different price with the upright cylindrically model.The modulator generates a switching control signal switching the three phase four leg system active filter on of the asymmetrical space vector modulation with a combination of PI proportional integral control with the output of the current compensation having the same amplitude and the opposite polarity of the load current. The modulator generates a switch modulation signal switching system active three phase four leg based on the asymmetrical voltage vector model with the output of the compensation current has the same amplitude and polarity opposite the load current.