Nuraini, Kholifah Tri Puji (2026) Perancangan Sistem Kontrol Temperatur Stack Pada PEM Electrolyzer Menggunakan Feedback Feedforward. Other thesis, Institut Teknologi Sepuluh Nopember.
![[thumbnail of 5009221126-Undergraduate_Thesis.pdf]](http://repository.its.ac.id/style/images/fileicons/text.png) |
Text
5009221126-Undergraduate_Thesis.pdf Restricted to Repository staff only Download (12MB) | Request a copy |
Abstract
PEM Electrolyzer merupakan teknologi produksi green hydrogen yang mampu beroperasi pada densitas arus tinggi sehingga menghasilkan panas irreversibel yang dapat melampaui setpoint temperatur stack. Pengendalian temperatur stack menjadi semakin kompleks ketika sistem dioperasikan menggunakan sumber energi terbarukan yang bersifat fluktuatif, sehingga diperlukan strategi kontrol yang mampu merespons perubahan arus secara cepat dan akurat. Penelitian ini bertujuan untuk merancang sistem kontrol temperatur stack PEM Electrolyzer menggunakan kombinasi feedback-feedforward melalui aktuator heat exchanger, dengan kerapatan arus sebagai variabel disturbance terukur dan laju aliran udara fan sebagai variabel manipulasi. Penelitian dilakukan secara simulasi menggunakan perangkat Simulink MATLAB berdasarkan model termal PEM Electrolyzer dengan arus operasi 1120–1200 A. Pemodelan plant menggunakan pendekatan First Order System yang diperoleh melalui pengujian open-loop, sementara parameter kontrol proporsional ditentukan melalui metode tuning Ziegler-Nichols. Gain feedforward diturunkan dari rasio antara gain disturbance dan gain plant, menghasilkan nilai kompensator Gff sebesar 0,005. Hasil pengujian menunjukkan bahwa kontrol feedback-feedforward dengan kenaikan arus mampu mempertahankan temperatur stack pada setpoint 80°C, dengan rise time 23 s, settling time 132 s, maximum overshoot 0,04%, dan error steady-state 0,06%. Dibandingkan dengan kontrol feedback saja, penambahan jalur feedforward menurunkan nilai IAE sebesar 16%, dari 73,3 menjadi 61,5. Sistem terbukti mampu menjaga kestabilan temperatur pada kondisi gangguan berupa kenaikan arus yang merepresentasikan karakteristik sumber energi terbarukan. Penelitian ini menyimpulkan bahwa strategi feedback-feedforward melalui heat exchanger lebih efektif dalam menjaga kestabilan termal PEM Electrolyzer pada kondisi operasi dinamis, dan memberikan landasan bagi pengembangan sistem pengendalian termal yang lebih adaptif pada skala yang lebih besar.
================================================================================================================================
Proton Exchange Membrane (PEM) electrolyzers are a promising technology for green hydrogen production because they can operate at high current densities. However, high-current operation generates irreversible heat that may cause the stack temperature to exceed its setpoint. Stack temperature control becomes more challenging when the system is supplied by fluctuating renewable energy sources, as variations in operating current directly affect heat generation. This study aims to design a stack temperature control system for a PEM electrolyzer using a combined feedback–feedforward control strategy through a heat exchanger, with current density as the measured disturbance variable and airflow rate as the manipulated variable. The study was conducted through MATLAB/Simulink simulations using a thermal model of a PEM electrolyzer operating at a current range of 1120–1200 A. The plant was modeled using a first-order system approach obtained from open-loop testing, while the proportional controller parameter was determined using the Ziegler–Nichols tuning method. The feedforward gain was derived from the ratio between the disturbance gain and the plant gain, resulting in a feedforward compensator value of (G_{ff}=0.005). The simulation results showed that the feedback–feedforward controller maintained the stack temperature at the 80°C setpoint under disturbance conditions, with a rise time of 23 s, a settling time of 132.1 s, a maximum overshoot of 0.04%, and a steady-state error of 0.06%. Compared with feedback control alone, the addition of the feedforward path reduced the Integral Absolute Error (IAE) by 16%, from 73.3 to 61.5. The system was able to maintain temperature stability under an increasing-current disturbance representing the characteristics of renewable energy sources. The results indicate that the feedback–feedforward strategy through the heat exchanger is more effective in maintaining the thermal stability of the PEM electrolyzer under dynamic operating conditions and provides a basis for developing more adaptive thermal control systems for larger-scale applications.
| Item Type: | Thesis (Other) |
|---|---|
| Uncontrolled Keywords: | Green Hydrogen, Heat exchanger, Kontrol Feedback-Feedforward, Kontrol Temperatur, PEM Electrolyzer, Proses Kontrol ======================================================================================================================================================== Feedback–feedforward Control, Green Hydrogen, Heat exchanger, Temperature Control, PEM Electrolyzer, Process Control |
| Subjects: | Q Science > QD Chemistry > QD553 Electrochemistry. Electrolysis T Technology > TJ Mechanical engineering and machinery > TJ212 Control engineering systems. Automatic machinery (General) T Technology > TJ Mechanical engineering and machinery > TJ223 PID controllers |
| Divisions: | Faculty of Industrial Technology and Systems Engineering (INDSYS) > Physics Engineering > 30201-(S1) Undergraduate Thesis |
| Depositing User: | Kholifah Tri Puji Nuraini |
| Date Deposited: | 30 Jul 2026 03:17 |
| Last Modified: | 30 Jul 2026 03:17 |
| URI: | http://repository.its.ac.id/id/eprint/139611 |
Actions (login required)
 |
View Item |