Azhari, Bangkit (2021) Analisis Performansi DC - DC Buck Boost Converter Dengan Pengendali Logika Fuzzy - PID dan Sliding Mode Controller. Sarjana thesis, Universitas Brawijaya.
Abstract
Sel surya merupakan perangkat energi baru terbarukan yang prinsip kerjanya bergantung pada kondisi intensitas cahaya matahari. Kondisi tersebut mengakibatkan tegangan keluaran yang dihasilkan tidak stabil, sehingga diperlukan sebuah DC-DC converter. Buck-boost converter merupakan DC-DC converter yang tegangan keluarannya dapat diatur untuk menjadi lebih besar maupun lebih kecil dari nilai tegangan masukannya, dengan mengatur besar duty cycle dari PWM. Namun, tegangan keluaran dari converter tersebut belum sesuai dengan yang diharapkan, sehingga diperlukan pengendali, yaitu pengendali logika fuzzy – PID dan Sliding Mode Controller (SMC). Penelitian ini dilakukan dengan menentukan parameter - parameter komponen buck-boost converter dan memodelkan dalam bentuk state space averaging pada simulink. Kemudian menentukan parameter logika fuzzy-PID dan SMC. Pada logika fuzzy-PID dilakukan dengan menentukan Kp, Ki , dan Kd dan setelah didapatkan selanjutnya melakukan fuzzifikasi, rule base dan deffuzifikasi untuk pengendali logic fuzzy. Selanjutnya menentukan parameter SMC dengan menentukan nilai U dengan cara mencari Ueq dan Un. Parameter tersebut tersebut disimulasikan dan hasil unjuk kerja dari buck-boost converter ketika tanpa pengendali dan menggunakan pengendali logic fuzzy – PID dan SMC dibandingkan dengan melihat settling time untuk mencapai keadaan steady state. Dilanjutkan dengan pengujian ketika kondisi menggunakan pengendali terdiri dari 3 perubahan, yaitu perubahan tegangan masukan, beban, dan tegangan masukan dan beban secara bersamaan. Dari penelitian ini, diperoleh hasil bahwa logika fuzzy-PID memiliki time recovery yang lebih lambat dibandingkan dengan pengedali SMC dan deviasi tegangan yang dihasilkan logika fuzzy-PID lebih besar daripada SMC. Kata kunci - buck-boost converter, pengendali logika fuzzy-PID, sliding mode controller, recovery time, deviasi tegangan.
English Abstract
Nowadays, the development of technology is very fast. Especially in the use of new and renewable energy, one of which is the use of solar cells. In the use of solar cells, there are obstacles, namely the output voltage is unstable and cannot be directly connected to the load. Therefore, a DC-DC converter is needed to convert an input DC voltage level to another DC voltage output. Buck-boost converter is a DC-DC converter whose output voltage can be set to be greater or less than the input voltage value by adjusting the duty cycle of Pulse Width Modulation (PWM). However, the output voltage does not match the reference voltage, so a controller is needed. One of the controllers that can be used is a Fuzzy-PID logic controller. PID controllers have demonstrated their ability to maintain a constant output voltage despite changes in input and load voltages. Meanwhile, fuzzy logic has been widely applied to non-linear controllers. In addition to fuzzy-PID logic there is a Sliding Mode Controller (SMC). SMC is a nonlinear controller that is resistant to interference, its setup and implementation is easy and simple. This research was conducted by determining the parameters of the uncontrolled buckboost converter and modeling the mathematical form of the circuit using state space averaging. Then determine the fuzzy-PID logic controller parameters are Kp, Ki, Kd, fuzzification, rule base and deffuzification. Meanwhile, the parameters determined for SMC are the Ueq and Un equations. Furthermore, the buck-boost converter circuit will be simulated with MATLAB simulinks and the performance results of the open loop and close loop buck-boost converters using fuzzy-PID logic and SMC are compared by looking at the settling time to reach a steady state. After that, it was continued with testing when the closed loop condition consisted of 3 changes, namely changes in input voltage, load, and input voltage and load simultaneously. The results obtained in this study are that when there is a disturbance in the buckboost converter there is a change in the recovery time and deviation of the output voltage of the buck-boost converter. The result is that the recovery time and voltage deviation at SMC are smaller with an average recovery time of 0.036 seconds and an average voltage deviation of 0.22 V. So that the performance of the buck-boost converter using SMC is better than the fuzzy-PID logic controller. Keywords : buck-boost converter, fuzzy logic-PID, sliding mode controller, recovery time, voltage deviation
Other obstract
-
| Item Type: | Thesis (Sarjana) |
|---|---|
| Identification Number: | 621.381 |
| Uncontrolled Keywords: | buck-boost converter, pengendali logika fuzzy-PID, sliding mode controller, recovery time, deviasi tegangan-- |
| Subjects: | 600 Technology (Applied sciences) > 621 Applied physics > 621.3 Electrical, magnetic, optical, communications, computer engineering; electronics, lighting > 621.38 Electronics, communications engineering > 621.381 Electronics |
| Depositing User: | Unnamed user with email gaby |
| Date Deposited: | 20 Oct 2021 02:48 |
| Last Modified: | 07 Oct 2024 04:14 |
| URI: | http://repository.ub.ac.id/id/eprint/184245 |
![[thumbnail of Bangkit Azhari.pdf]](http://repository.ub.ac.id/style/images/fileicons/text.png) |
Text
Bangkit Azhari.pdf Download (2MB) |
Actions (login required)
 |
View Item |