Cover Image

Modified model reference adaptive control using lyapunov rule for power module in nuclear reactor system

Reactor TRIGA PUSPATI (RTP) was successfully installed in 1982 at Malaysia Nuclear Agency and has been conducting safe operation for more than 35 years. It is the only research reactor in Malaysia. RTP is a TRIGA Mark II pool-type reactor, with 1 MW thermal power. The power system of the RTP was cur...

Full description

Saved in:
Bibliographic Details
Main Author: Ghazali, Anith Khairunnisa
Format: Thesis
Language:English
Published: 2017
Online Access:http://psasir.upm.edu.my/id/eprint/67892/1/FK%202017%20133%20%20IR.pdf
http://psasir.upm.edu.my/id/eprint/67892/
Tags: Add Tag
No Tags, Be the first to tag this record!
id my.upm.eprints.67892
record_format eprints
spelling my.upm.eprints.678922019-04-03T01:09:11Z http://psasir.upm.edu.my/id/eprint/67892/ Modified model reference adaptive control using lyapunov rule for power module in nuclear reactor system Ghazali, Anith Khairunnisa Reactor TRIGA PUSPATI (RTP) was successfully installed in 1982 at Malaysia Nuclear Agency and has been conducting safe operation for more than 35 years. It is the only research reactor in Malaysia. RTP is a TRIGA Mark II pool-type reactor, with 1 MW thermal power. The power system of the RTP was currently upgraded from relay mode to automated power control system. The safety features of the system also have been designed to avoid any abnormality in the electronic and associate components that may lead to uncontrolled rate of reactivity The reactivity and reactor power are controlled by the movements of four control rods, known as Safety, Shim, Regulating, and Transient. Currently, the RTP using PI controller indicates transient response with longer settling time and rise time. Thus, the efficiency of the reactor core is reduced and the reactor’s lifetime is shortened. Since the RTP is very important in various research fields, transient performance is vital. To overcome this problem, are quite challenging using PI controller since this controller are not capable to improve the transient response without produce overshoot and keep maintaining the steady state error less than 1% FP. Therefore, to solve this problem, it is necessary to design a controller that good in tracking and confirms the stability of the system. This research use Model Reference Adaptive Control MRAC controller to control the RTP power level because it good in adaptation and have a reference model. Even though the MRAC confirm the stability, but it gives unsatisfied performance to track the reference model. Thus, the modified (MRAC) with Lyapunov rule was proposed. The RTP model was modelled using a system identification method from its real-time power operation. Pole placement technique was applied to design the reference model with 47.8% ratio of movement. The stability of the proposed system was validated using transfer function test to ensure its capability. The Ziegler-Nichols technique was implemented to determine the adjustment mechanism. The adjustment mechanism will minimise the error of the reactor power to zero. The value of adjustment mechanism was determined by measuring the delay time and time constant from the operation data. The stability of controller has been checked using Lyapunov stability derivation. Results from the conventional MRAC and modified MRAC were compared and analysed. The percentage of improvement in terms of settling time was 33%, rise time was 33%, and there were no changes of for steady state error and tracking error. In conclusion, the modified MRAC had performed well in transient response, with settling time of 123.36 sec and rise time of 93.76 sec, which are applicable for a nuclear reactor power control system. 2017-09 Thesis NonPeerReviewed text en http://psasir.upm.edu.my/id/eprint/67892/1/FK%202017%20133%20%20IR.pdf Ghazali, Anith Khairunnisa (2017) Modified model reference adaptive control using lyapunov rule for power module in nuclear reactor system. Masters thesis, Universiti Putra Malaysia.
institution Universiti Putra Malaysia
building UPM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Putra Malaysia
content_source UPM Institutional Repository
url_provider http://psasir.upm.edu.my/
language English
description Reactor TRIGA PUSPATI (RTP) was successfully installed in 1982 at Malaysia Nuclear Agency and has been conducting safe operation for more than 35 years. It is the only research reactor in Malaysia. RTP is a TRIGA Mark II pool-type reactor, with 1 MW thermal power. The power system of the RTP was currently upgraded from relay mode to automated power control system. The safety features of the system also have been designed to avoid any abnormality in the electronic and associate components that may lead to uncontrolled rate of reactivity The reactivity and reactor power are controlled by the movements of four control rods, known as Safety, Shim, Regulating, and Transient. Currently, the RTP using PI controller indicates transient response with longer settling time and rise time. Thus, the efficiency of the reactor core is reduced and the reactor’s lifetime is shortened. Since the RTP is very important in various research fields, transient performance is vital. To overcome this problem, are quite challenging using PI controller since this controller are not capable to improve the transient response without produce overshoot and keep maintaining the steady state error less than 1% FP. Therefore, to solve this problem, it is necessary to design a controller that good in tracking and confirms the stability of the system. This research use Model Reference Adaptive Control MRAC controller to control the RTP power level because it good in adaptation and have a reference model. Even though the MRAC confirm the stability, but it gives unsatisfied performance to track the reference model. Thus, the modified (MRAC) with Lyapunov rule was proposed. The RTP model was modelled using a system identification method from its real-time power operation. Pole placement technique was applied to design the reference model with 47.8% ratio of movement. The stability of the proposed system was validated using transfer function test to ensure its capability. The Ziegler-Nichols technique was implemented to determine the adjustment mechanism. The adjustment mechanism will minimise the error of the reactor power to zero. The value of adjustment mechanism was determined by measuring the delay time and time constant from the operation data. The stability of controller has been checked using Lyapunov stability derivation. Results from the conventional MRAC and modified MRAC were compared and analysed. The percentage of improvement in terms of settling time was 33%, rise time was 33%, and there were no changes of for steady state error and tracking error. In conclusion, the modified MRAC had performed well in transient response, with settling time of 123.36 sec and rise time of 93.76 sec, which are applicable for a nuclear reactor power control system.
format Thesis
author Ghazali, Anith Khairunnisa
spellingShingle Ghazali, Anith Khairunnisa
Modified model reference adaptive control using lyapunov rule for power module in nuclear reactor system
author_facet Ghazali, Anith Khairunnisa
author_sort Ghazali, Anith Khairunnisa
title Modified model reference adaptive control using lyapunov rule for power module in nuclear reactor system
title_short Modified model reference adaptive control using lyapunov rule for power module in nuclear reactor system
title_full Modified model reference adaptive control using lyapunov rule for power module in nuclear reactor system
title_fullStr Modified model reference adaptive control using lyapunov rule for power module in nuclear reactor system
title_full_unstemmed Modified model reference adaptive control using lyapunov rule for power module in nuclear reactor system
title_sort modified model reference adaptive control using lyapunov rule for power module in nuclear reactor system
publishDate 2017
url http://psasir.upm.edu.my/id/eprint/67892/1/FK%202017%20133%20%20IR.pdf
http://psasir.upm.edu.my/id/eprint/67892/
_version_ 1643839040923893760
score 13.211869

Similar Items