Yanti, Febriana Winda (2022) Aplikasi Model Solar Sel Double Diode Untuk Pengukuran Unjuk Kerja DC-DC Konverter Pada Sistem Pompa Air Piston. Other thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Maximum Power Point Tracker (MPPT) adalah algoritma untuk mengetahui daya ouput maksimum (Pmax) yang merupakan perkalian antara arus dengan tegangan (IxV) output modul photovoltaik (PV) pada kondisi radiasi matahari (G) & temperatur solar sel (Tcell) tertentu. MPPT bisa digunakan sebagai Pmax suatu sistem PV, maka nilai MPPT bisa digunakan sebagai ukuran untuk melakukan analisa & evaluasi unjuk-kerja DC-DC konverter pada kondisi G & Tcell. Nilai MPPT bisa didapatkan dengan memanfaatkan suatu model solar-sel atau modul PV dengan data data masukan antara lain : G & Tcell. Model solar-sel double diode memiliki hubungan I-V ouput persamaan mathematis eksponensial maka untuk mendapatkan I-V output harus diselesaikan dengan memanfaatkan bahasa program C-Windows dengan metode iterasi-numerik. Sistem PV ini terdiri dari beberapa komponen antara lain : PV array, DC-DC converter (1400 W), motor DC (510 W) pumping frame, pulley, stroke adjustment, belt, flywheel, well, piston pump, dan water outlet. Pada sistem PV ini energi output PV array tanpa energi penyimpan atau baterai, sehingga daya ouput (P) array PV selalu berubah-ubah sesuai dengan intensitas radiasi matahari (G). Agar unjuk-kerja sistem PV pada keadaan optimal, maka DC-DC converter digunakan sebagai pengatur tegangan DC yang masuk ke motor DC. Pengaturan tegangan ouput DC-DC converter diatur yang selalu berubah dengan mengikuti perubahaan intensitas radiasi matahari dengan tujuan daya output (IxV) sistem PV pada kondisi maksimum. Untuk mengetahui unjuk kerja sistem PV ini dilakukan pengukuran & rekam data-data antara lain : intensitas radiasi matahari (G-W/m2 ), temperatur solar-sel (Tcell OC), temperatur ambient (OC), temperatur motor DC (OC), arus (IPV) & tegangan (VPV) ouput array PV, tekanan air (bar), laju aliran air (Q – m 3 /dt), total head delivery (H-m), Rpm motor. Untuk memudahkan analisa & evaluasi unjuk kerja DV-DC konverter, maka nilai-nilai : intensitas radiasi (G), temperatur solar-sel (Tcell), arus tegangan (I-V) pengukuran, daya (IxV) pengukuran, arus-tegangan (I-V) model dan daya maksimum (Pmax) model bisa ditampilkan dalam sebuah grafik. Secara perhitungan maka bisa didapatkan nilai efiensi sistem PV pompa, efisiensi PV array, daya ouput pengukuran-model, perbandingan antara daya ouput pengukuran dengan daya maksimum atau MPPT array PV. Dari hasil analisa dan evaluasi bisa diketahui unjuk-kerja DC-DC konverter relative optimal. Hal ini diketahui berdasarkan selisih antara daya output PV array (PPV) pengukuran dengan daya output (PMPPT) model hanya berbeda relative kecil. Secara teknis bahwa besarnya beban (load) sudah optimal dan DC-DC converter telah bekerja dengan baik dalam pengaturan tegangan DC yang masuk ke motor DC sesuai dengan besarnya intensitas radiasi matahari.
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Maximum Power Point Tracker (MPPT) is an algorithm to determine the maximum output power (Pmax) which is the product of the current and voltage (IxV) of the photovoltaic (PV) module output under certain conditions of solar radiation (G) & solar cell temperature (Tcell). MPPT can be used as the Pmax of a PV system, so the MPPT value can be used as a measure to analyze & evaluate the performance of the DC-DC converter under G & Tcell conditions. The MPPT value can be obtained by utilizing a solar-cell model or PV module with input data including: G & Tcell. The solar-cell double diode model has an exponential mathematical equation I-V output relationship, so to get the I-V output it must be solved using the C-Windows programming language with the numerical-iteration method. This PV system consists of several components, including: PV array, DC-DC converter (1400 W), DC motor (510 W) pumping frame, pulley, stroke adjustment, belt, flywheel, well, piston pump, and water outlet. In this PV system, the output energy of the PV array is without energy storage or batteries, so the output power (P) of the PV array always varies according to the intensity of solar radiation (G). In order for the performance of the PV system to be optimal, the DC-DC converter is used as a DC voltage regulator that enters the DC motor. The output voltage setting of the DC-DC converter is regulated which is always changing according to changes in the intensity of solar radiation with the aim of the output power (IxV) of the PV system at maximum conditions. To determine the performance of this PV system, measurements and data were recorded including: solar radiation intensity (G-W/m2), solar-cell temperature (Tcell-OC), ambient temperature (OC), DC motor temperature (OC), current (IPV) & voltage (VPV) PV array output, water pressure (bar), water flow rate (Q – m3/s), total head delivery (H-m), motor Rpm. To facilitate the analysis & evaluation of the performance of the DV-DC converter, the values are: radiation intensity (G), solar-cell temperature (Tcell), current-voltage (I-V) measurement, power (IxV) measurement, current-voltage ( I-V) model and maximum power (Pmax) model can be displayed in a graph. By calculation, the PV pump system efficiency value, PV array efficiency, measurement-model output power, comparison between measurement output power and maximum power or MPPT array PV can be obtained. From the analysis and evaluation results, it can be seen that the performance of the DC-DC converter is relatively optimal. It is known that based on the difference between the PV array output power (PPV) measurement and the output power (PMPTT) model, the difference is only relatively small. Technically, the amount of load is optimal and the DC-DC converter has worked well in regulating the DC voltage that enters the DC motor according to the intensity of solar radiation.
| Item Type: | Thesis (Other) |
|---|---|
| Additional Information: | RSF 621.312 44 Yan a-1 2022 |
| Uncontrolled Keywords: | MPPT, DC-DC converter, Numerical iteration, solar-cell & PV module models, double diode, pump-piston, C-Windows program and National Instruments software. |
| Subjects: | T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK1087 Photovoltaic power generation |
| Divisions: | Faculty of Industrial Technology and Systems Engineering (INDSYS) > Physics Engineering > 30201-(S1) Undergraduate Thesis |
| Depositing User: | - Davi Wah |
| Date Deposited: | 11 Dec 2023 08:24 |
| Last Modified: | 11 Dec 2023 08:24 |
| URI: | http://repository.its.ac.id/id/eprint/105267 |
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