Desain Sistem Kontrol Tekanan Berbasis PI Pada Anoda PEMFC Closed Cathode

Farid, Rahmat (2025) Desain Sistem Kontrol Tekanan Berbasis PI Pada Anoda PEMFC Closed Cathode. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Proton Exchange Membrane Fuel Cell (PEMFC) merupakan jenis energi terbarukan yang tengah dikembangkan secara intensif. PEMFC memanfaatkan reaksi elektrokimia antara hydrogen dan oksigen untuk menghasilkan energi Listrik. Namun tingginya biaya hydrogen memerlukan penggunaan kembali hydrogen yang terbuang / loss dalam operasi PEMFC. Salah satu cara menanggulanginya adalah dengan membuat sistem resirkulasi berbasis ejektor. Pemodelan resirkulasi hydrogen ini memanfaatkan aliran hydrogen yang tidak sempat bereaksi pada stack fuel cell. Untuk mengoptimalkan kinerja dari sistem resirkulasi PEMFC, diperlukan sistem kontrol tekanan pada anoda berbasis PI yang mengontrol bukaan valve. Setelah model simulasi dari sistem resirkulasi anoda PEMFC berjenis closed cathode dibuat, dilakukan uji validasi dengan kurva karakteristik dan RMSE yang diperoleh sebesar 0,6%. Simulasi dijalankan dengan menetapkan setpoint tekanan sebesar 1,57 bar untuk diamati grafik respon terhadap tekanan, tegangan, arus, daya, suhu, dan error. Adapun hasil uji performansi dari sistem kontrol tekanan berbasis PI yaitu menghasilkan nilai rise time sebesar 1 detik; settling time selama 83 detik; steady-state error sebesar 0,1 bar; dan peak time selama 5 detik. Sementara itu error setpoint diperoleh dengan nilai IAE sebesar 34.85 bar.s dan nilai ITAE sebesar 4833,64 bar.s2
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Proton Exchange Membrane Fuel Cell (PEMFC) is a type of renewable energy that is being intensively developed. PEMFC utilizes the electrochemical reaction between hydrogen and oxygen to produce electrical energy. However, the high cost of hydrogen requires the reuse of hydrogen lost in PEMFC operations. One way to overcome this is to create an ejector-based recirculation system. This hydrogen recycling modeling utilizes the hydrogen flow that does not have time to react in the fuel cell stack. To optimize the performance of the PEMFC recirculation system, a PI-based pressure control system is needed to control the operation of the valve. After the simulation model of the closed cathode PEMFC anode recirculation system was created, a validation test was carried out with a characteristic curve and the RMSE obtained was 0.6%. The simulation began by setting a pressure setpoint of 1.57 bar to observe the response graph to pressure, voltage, current, power, temperature, and error. The results of the performance test of the PI-based pressure control system produced a rise time value of 1 second; settling time for 83 seconds; steady state error of 0.1 bar; and peak time for 5 seconds. Meanwhile, the setpoint error was obtained with an IAE value of 34.85 bar.s and an ITAE value of 4833.64 bar.s2

Item Type:	Thesis (Other)
Uncontrolled Keywords:	PEMFC, Resirkulasi, PI, Closed Cathode, PEMFC, Recirculation, PI, Closed Cathode
Subjects:	T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK2931 Fuel cells
Divisions:	Faculty of Industrial Technology and Systems Engineering (INDSYS) > Physics Engineering > 30201-(S1) Undergraduate Thesis
Depositing User:	Rahmat Farid
Date Deposited:	10 Feb 2025 00:45
Last Modified:	10 Feb 2025 00:45
URI:	http://repository.its.ac.id/id/eprint/118557

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