scholarly journals Design and analysis of solar cell systems 100Wp in the Study Program Laboratory Electrical Engineering UHN Medan

2021 ◽  
Vol 878 (1) ◽  
pp. 012063
Author(s):  
P Hutapea
Keyword(s):  
Solar Cells ◽  
Light Intensity ◽  
Load Capacity ◽  
Electrical Engineering ◽  
Peak Load ◽  
Electrical Load ◽  
Alternative Source ◽  
Study Program ◽  
Technical And Economic Analysis ◽  
Daily Load

Abstract Currently, the use of solar cells is being developed as an alternative source of electricity generation. Studies and research are constantly looking for ways to increase the efficiency of using solar cells. This study aims to provide information to students of the Electrical Engineering study program at UHN Medan about the design, manufacture, simulation of the ETAP program, technical and economic analysis. Electrical load capacity in the laboratory room with daily load of 45Wh and peak load of 82 watts. Then the recommended designs are: 100Wp solar panel, BCR 40A, 102Ah battery and 1500VA inverter. The total cost required for the investment period is IDR. 18,954,000. Observations were made by taking light intensity data that occurred for 4 days in the laboratory. The equipment used for this measurement is: a luxmeter for measuring light intensity and a digital multimeter for measuring currents and voltages. The results show that. when the intensity condition is 49.0Klux, the voltage is 12.08VDC and the current is 0.47A. The highest light intensity occurs on the day of August 14, 2020 between 13.00-13.30WIB of 93.0Klux producing a voltage of 12.09VDC and an electric current of 0.90mA.

Photocurrents of solar cells sensitized by aggregate-forming polyenes: Enhancement due to suppression of singlet–triplet annihilation by lowering of dye concentration or light intensity

2006 ◽  
Vol 420 (4-6) ◽  
pp. 309-315 ◽  
Author(s):  
Xiao-Feng Wang ◽  
Yasushi Koyama ◽  
Hiroyoshi Nagae ◽  
Yumiko Yamano ◽  
Masayoshi Ito ◽  
...  
Keyword(s):  
Solar Cells ◽  
Light Intensity

scholarly journals CONCEPT OF CURRICULUM EVALUATION IN EDUCATION PROGRAM OF ELECTRICAL ENGINEERING USING AUN-QA AS BENCHMARKING

2020 ◽  
Vol 3 (1) ◽  
pp. 1-5
Author(s):  
Vice Pramutia Dolly ◽  
Riki Mukhaiyar
Keyword(s):  
Quality Assurance ◽  
Electrical Engineering ◽  
Comparative Method ◽  
Educational Institution ◽  
Curriculum Evaluation ◽  
Study Program ◽  
Quality Program ◽  
Education Improvement ◽  
The University

Qualified graduates is supported by an efficient process of education, improvement of competence on an ongoing basis, and appropriate curriculum. The curriculum becomes an important part in education. Each educational institution graduates expect superior quality, good morals, knowledge and competence of skilled labor. Quality of qualified graduates will increase the demand of stakeholders to recruit workers in the industry related. It is necessary to implement a quality program in an effort to provide the best service for educational activities. This study discusses the program carried out by educational and vocational study program in electrical engineering (EEVE) achieve the goal to do assessment by AUN-QA (ASEAN University Network-Quality Assurance) in evaluating the curriculum. AUN-QA aims to conduct quality assurance of courses that a member of AUN, as well as guiding and guide the university to improve and maintain the quality of the university. Researchers use qualitative research using the comparative method of ex-postfacto with the kind of correlational study. The study was conducted with data collection, such as observation, interviews, field observation and documentation study. This research resulted in the development of curriculum in vocational and educational courses in electrical engineering (EEVE), in terms of meeting the basic needs for qualified graduates, competent and professional in accordance with the standards of the AUN-QA. Through this research is expected to be a pattern for other courses to evaluate the curriculum for graduates scored an excellent, competent and qualified

scholarly journals Flexural Behavior of Fire-Damaged Prefabricated RC Hollow Slabs Strengthened with CFRP versus TRM

Materials ◽  
2020 ◽  
Vol 13 (11) ◽  
pp. 2556
Author(s):  
Zheng-Ang Sui ◽  
Kun Dong ◽  
Jitong Jiang ◽  
Shutong Yang ◽  
Kexu Hu
Keyword(s):  
Failure Modes ◽  
Early Stage ◽  
Load Capacity ◽  
Peak Load ◽  
Flexural Behavior ◽  
Masonry Building ◽  
Fire Exposure ◽  
Standard Fire ◽  
Four Point Bending ◽  
Strengthening Technique

In this paper, carbon fiber reinforced polymer (CFRP) and textile reinforced mortar (TRM) strengthening techniques were proposed to retrofit and strengthen fire-damaged prefabricated concrete hollow slabs. A total of six slabs, from an actual multi-story masonry building, were tested to investigate the flexural performance of reinforced concrete (RC) hollow slabs strengthened with TRM and CFRP. The investigated parameters included the strengthening method (CFRP versus TRM), the number of CFRP layers, and with or without fire exposure. One unstrengthened slab and one TRM strengthened slab served as the control specimens without fire exposure. The remaining four slabs were first exposed to ISO-834 standard fire for 1 h, and then three of them were strengthened with CFRP or TRM. Through the four-point bending tests at ambient temperature, the failure modes, load and deformation response were recorded and discussed. Both CFRP and TRM strengthening methods can significantly increase the cracking load and peak load of the fire-damaged hollow slabs, as well as the stiffness in the early stage. The prefabricated hollow slabs strengthened by CFRP have better performance in the ultimate bearing capacity, but the ductility reduced with the increase of CFRP layers. Meanwhile, the TRM strengthening technique is a suitable method for the performance improvement of fire-damaged hollow slabs, in terms of not only the load capacity, especially the cracking load, but also the flexural stiffness and deformation capacity.

scholarly journals Interacting Ru(bpy) 3 2 + Dye Molecules and TiO2 Semiconductor in Dye-Sensitized Solar Cells

Mathematics ◽  
2020 ◽  
Vol 8 (5) ◽  
pp. 841 ◽  
Author(s):  
Sasipim Putthikorn ◽  
Thien Tran-Duc ◽  
Ngamta Thamwattana ◽  
James M. Hill ◽  
Duangkamon Baowan
Keyword(s):  
Solar Cells ◽  
Continuum Model ◽  
Minimum Energy ◽  
Dye Sensitized Solar Cells ◽  
Nanoporous Structure ◽  
Dye Molecules ◽  
Energy Position ◽  
Alternative Source ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

Solar energy is an alternative source of energy that can be used to replace fossil fuels. Various types of solar cells have been developed to harvest this seemingly endless supply of energy, leading to the construction of solar cell devices, such as dye-sensitized solar cells. An important factor that affects energy conversion efficiency of dye-sensitized solar cells is the distribution of dye molecules within the porous semiconductor (TiO 2 ). In this paper, we formulate a continuum model for the interaction between the dye molecule Tris(2,2 ′ -bipyridyl)ruthenium(II) (Ru(bpy) 3 2 + ) and titanium dioxide (TiO 2 ) semiconductor. We obtain the equilibrium position at the minimum energy position between the dye molecules and between the dye and TiO 2 nanoporous structure. Our main outcome is an analytical expression for the energy of the two molecules as a function of their sizes. We also show that the interaction energy obtained using the continuum model is in close agreement with molecular dynamics simulations.

scholarly journals Analisa Total Harmonic Distortion dan Losses Setelah Beroperasinya Distributed Generation di Program Studi Teknik Elektro Universitas Udayana

2019 ◽  
Vol 6 (1) ◽  
pp. 125
Author(s):  
Gregorius Reza Dwi Nugroho ◽  
I Wayan Rinas ◽  
I Wayan Arta Wijaya
Keyword(s):  
Power Plant ◽  
Distributed Generation ◽  
Electrical Engineering ◽  
Harmonic Distortion ◽  
S Phase ◽  
Electric Power System ◽  
Total Harmonic Distortion ◽  
Study Program ◽  
Lc Filter ◽  
T Phase

In the Electrical Engineering Study Program, Udayana University, a Solar Power Plant was installed with a power of 26.4 kWp, a Wind Power Plant with a power of 5 kWp and a Diesel Power Plant with a capacity of 20 kVA. The size of harmonics in the electric power system is called Total Harmonic Distortion (THD). THDi's research results at DH Electrical Engineering Building of Udayana University before the operation of Distributed Generation (DG) were that R phase was 9.91%, S phase was 10.86%, and T phase was 9.85%. THDi value after the operation of Distributed Generation, R phase was 16.05%, S phase was 17.53%, and T phase was 15.70%. THDi value with LC filter, R phase was 4.0%, S phase was 5.52% and T phase was 3.97%. THDv value before the operation of Distributed Generation, R phase was 0.08%, S phase was 0.48% and T phase was 0.47%. THDv value after the operation of Distributed Generation, R phase was 0.24%, S phase was 0.44% and T phase was 0.49%. THDv value with LC filter, R phase was 0.01%, S phase was 0.01% and T phase was 0.02%. The results of the research showed that losses before the operation of Distributed Generation were 115.53 Watts and the value of losses after the operation of Distributed Generation had increased to 130.07 Watts.

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