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Journal articles on the topic 'Efficiency tracking'

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Author: Grafiati
Published: 20 May 2022

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1

Green, Martin A. "Tracking solar cell conversion efficiency." Nature Reviews Physics 2, no. 4 (March 3, 2020): 172–73. http://dx.doi.org/10.1038/s42254-020-0163-y.

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2

S., Preethi, Surya Prakash K, Swathi S, and Vishnu B. "Implementation of Advanced Solar Tracking and Cleaning to Improve Efficiency." Bonfring International Journal of Networking Technologies and Applications 6, no. 1 (March 29, 2019): 01–05. http://dx.doi.org/10.9756/bijnta.9001.

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Francisco Coelho, Roberto, Walbermark Marques dos Santos, and Denizar Cruz Martins. "INFLUENCE OF POWER CONVERTERS ON PV MAXIMUM POWER POINT TRACKING EFFICIENCY." Eletrônica de Potência 19, no. 1 (February 1, 2014): 73–80. http://dx.doi.org/10.18618/rep.2014.1.073080.

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4

Prof. V. V. Deotare, Prof V. V. Deotare, Dr D. V. Padole Dr. D. V. Padole, and S. K. Sawant S. K. Sawant. "High-Efficiency Auto-Tracking Solar Combined Heat and Power Generation System." Indian Journal of Applied Research 3, no. 7 (October 1, 2011): 221–23. http://dx.doi.org/10.15373/2249555x/july2013/69.

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5

Winkelman, Steven R., James H. Drzemiecki, and Juanita M. Haydel. "Industrial energy efficiency and energy tracking." P2: Pollution Prevention Review 7, no. 1 (1997): 33–46. http://dx.doi.org/10.1002/(sici)1520-6815(199724)7:1<33::aid-ppr3>3.0.co;2-9.

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6

Sadri, F. "Information source tracking method: efficiency issues." IEEE Transactions on Knowledge and Data Engineering 7, no. 6 (1995): 947–54. http://dx.doi.org/10.1109/69.476500.

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7

Taheem, Anubhav. "Optimization of Sun Tracking Data Handling to Improve Efficiency of PV Module." Journal of Advanced Research in Alternative Energy, Environment and Ecology 06, no. 01 (August 23, 2019): 1–15. http://dx.doi.org/10.24321/2455.3093.201901.

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8

Ungar, Nathaniel R., Gerald Matthews, Joel S. Warm, William N. Dember, John K. Thomas, Victor S. Finomore, and Tyler H. Shaw. "Demand Transitions and Tracking Performance Efficiency: Structural and Strategic Models." Proceedings of the Human Factors and Ergonomics Society Annual Meeting 49, no. 17 (September 2005): 1523–26. http://dx.doi.org/10.1177/154193120504901704.

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A compensatory tracking task with hard and easy levels of difficulty was used to test resource depletion and effort regulation models of dual-to-single task transition effects. Both models were supported by the data. Consistent with a resource depletion view, participants who shared the difficult tracking task with a vigilance task during an induction phase, and then performed the tracking task alone during a transition phase, had greater levels of tracking error in both phases than those who were confronted only with the tracking task. By contrast, in accord with expectations derived from the effort regulation view, tracking error on the easy task was smaller during both phases of the study for participants who originally shared tracking with vigilance than for those confronted only with the tracking task. Evidently, task difficulty is a key factor in determining the domains in which these models apply.
9

Singh, Jaspal, and Prabhdeep Kaur. "Tracking Efficiency of Exchange Traded Funds (ETFs)." Paradigm 20, no. 2 (December 2016): 176–90. http://dx.doi.org/10.1177/0971890716670722.

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Exchange traded funds (ETFs) have emerged as a new investment vehicle in the mutual fund industry providing investors with the ability to trade the entire market through a single transaction executed at the exchange. Using a sample of 12 equity ETFs from 1 April 2011 to 31 March 2015, the present article attempts to examine the performance efficiency of ETFs in India and explore factors that drive the performance of ETFs away from their target indices. The study reveals that ETFs exhibit significant tracking error while trying to replicate the returns of their benchmark indices. The results of panel regression analysis further reveal that the assets under management and volume positively affected the tracking ability of ETFs whereas volatility is reported to have negative impact on the tracking efficiency of ETFs. The results will have important implications for investors, managers as well as for the evaluation criteria involved in assessing the performance of actively managed funds.
10

Ang, B. W., A. R. Mu, and P. Zhou. "Accounting frameworks for tracking energy efficiency trends." Energy Economics 32, no. 5 (September 2010): 1209–19. http://dx.doi.org/10.1016/j.eneco.2010.03.011.

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11

Chen, Sheng, and Chih Chen Chen. "Implementation of Sun Tracking for Solar Cell with Maximum Power Point Tracking." Applied Mechanics and Materials 300-301 (February 2013): 572–75. http://dx.doi.org/10.4028/www.scientific.net/amm.300-301.572.

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In this paper, the implement of the solar cell for sun tracking is achieved. The sun energy is abundant with clean and green energy, but the efficiency is not benefit from the source of solar panel to the power conversion output for the practical application. This paper contains the implement starting from driving solar cell with the XY-axis servo motor to trace the optimal input solar light, then the maximum power point tracking circuit (MPPT) in the Boost conversion is included to increase the efficiency for lithium battery charging. The super capacitor banks are paralleled with the lithium battery to improve the inrush power load, which is benefit for prolong the lithium battery and solar panel life; The applications of output are included two parts; one is the small green man of traffic light and the other one is AC 110V urban electric conversion; the control core for this system is PSOC chip for its simple, practical and high efficiency demand.
12

Osgood, Sarah Swierenga, Kenneth R. Boff, and Rebecca S. Donovan. "Rapid Communication Display Technology Efficiency in a Multi-Task Environment." Proceedings of the Human Factors Society Annual Meeting 32, no. 19 (October 1988): 1395–99. http://dx.doi.org/10.1177/154193128803201919.

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The present study examined the advantage of Rapid Communication (RAP-COM) Display Technology over conventional spatially arrayed displays in the context of secondary task demands. This research represents an early step in assessing the use of RAP-COM display techniques in multi-task environments. Eight subjects were instructed to respond to briefly presented visual stimuli, while concurrently performing an unstable tracking task at two levels of difficulty. Duration thresholds, obtained using a moment-to-moment adaptive tracking performance procedure, were collected for RAP-COM and spatially arrayed displays while RMS error scores were collected from the unstable tracking task performance. Information transfer rates for the RAP-COM technique were faster than for the spatially distributed array under both the single and dual task conditions. Regardless of secondary tracking task difficulty, subjects were able to maintain primary task performance levels on RAP-COM and spatial display tasks, although a decrement in tracking performance was seen.
13

HANDA, Yoichi, Yoshikazu (D N. Nenchev) KANAMIYA, and Daisuke SATO. "2A1-A15 Path Tracking Efficiency Under Natural Motion." Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec) 2010 (2010): _2A1—A15_1—_2A1—A15_3. http://dx.doi.org/10.1299/jsmermd.2010._2a1-a15_1.

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14

Ghajar, M. Reza, Seth J. Wilk, William Lepkowski, Bertan Bakkaloglu, and Trevor J. Thornton. "Backgate Modulation Technique for Higher Efficiency Envelope Tracking." IEEE Transactions on Microwave Theory and Techniques 61, no. 4 (April 2013): 1599–607. http://dx.doi.org/10.1109/tmtt.2013.2247616.

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15

Shu, Ming-Hung, Jan-Yee Kung, Thanh-Lam Nguyen, and Bi-Min Hsu. "Dynamically monitoring the service efficiency with tracking signals." Industrial Management & Data Systems 113, no. 9 (September 23, 2013): 1334–50. http://dx.doi.org/10.1108/imds-02-2013-0094.

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16

Chu, Pinghan, Michael R. James, and Zhehui Wang. "Efficiency Studies of Fast Neutron Tracking Using MCNP." Journal of Nuclear Engineering 3, no. 2 (April 30, 2022): 117–27. http://dx.doi.org/10.3390/jne3020007.

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Fast neutron identification and spectroscopy is of great interest to nuclear physics experiments. Using the neutron elastic scattering, the fast neutron momentum can be measured. Wang and Morris introduced the theoretical concept that the initial fast neutron momentum can be derived from up to three consecutive elastic collisions between the neutron and the target, including the information of two consecutive recoil ion tracks and the vertex position of the third collision or two consecutive elastic collisions with the timing information. Here, we also include the additional possibility of measuring the deposited energies from the recoil ions. In this paper, we simulate the neutron elastic scattering using the Monte Carlo N-Particle Transport Code (MCNP) and study the corresponding neutron detection and tracking efficiency. The corresponding efficiency and the scattering distances are simulated with different target materials, especially natural silicon (92.23%28Si, 4.67%29Si, and 3.1%30Si) and helium-4 (4He). The timing of collision and the recoil ion energy are also investigated, which are important characters for the detector design. We also calculate the ion traveling range for different energies using the software, “The Stopping and Range of Ions in Matter (SRIM)”, showing that the ion track can be most conveniently observed in 4He unless sub-micron spatial resolution can be obtained in silicon.
17

Zhang, Wei Jing. "Design of Single Axis Tracking Solar Photovoltaic Tracking System." Applied Mechanics and Materials 700 (December 2014): 12–15. http://dx.doi.org/10.4028/www.scientific.net/amm.700.12.

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This paper presents a single axis tracking solar photovoltaic system,the system has the advantages of simple structure, high control accuracy, low cost. The tracking system be composed of sunlight sensor, controller, barrel ,motor. It can freely achieve to rotate in the space within the range from 0°to 180°. The sunshine vertical irradiation bias in the solar panel is not more than 0.3°. Compared with the fixed photovoltaic system,it can effectively improve the utilization efficiency of solar energy.
18

Ali, Mahmoud N., Karar Mahmoud, Matti Lehtonen, and Mohamed M. F. Darwish. "Promising MPPT Methods Combining Metaheuristic, Fuzzy-Logic and ANN Techniques for Grid-Connected Photovoltaic." Sensors 21, no. 4 (February 10, 2021): 1244. http://dx.doi.org/10.3390/s21041244.

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This paper addresses the improvement of tracking of the maximum power point upon the variations of the environmental conditions and hence improving photovoltaic efficiency. Rather than the traditional methods of maximum power point tracking, artificial intelligence is utilized to design a high-performance maximum power point tracking control system. In this paper, two artificial intelligence-based maximum power point tracking systems are proposed for grid-connected photovoltaic units. The first design is based on an optimized fuzzy logic control using genetic algorithm and particle swarm optimization for the maximum power point tracking system. In turn, the second design depends on the genetic algorithm-based artificial neural network. Each of the two artificial intelligence-based systems has its privileged response according to the solar radiation and temperature levels. Then, a novel combination of the two designs is introduced to maximize the efficiency of the maximum power point tracking system. The novelty of this paper is to employ the metaheuristic optimization technique with the well-known artificial intelligence techniques to provide a better tracking system to be used to harvest the maximum possible power from photovoltaic (PV) arrays. To affirm the efficiency of the proposed tracking systems, their simulation results are compared with some conventional tracking methods from the literature under different conditions. The findings emphasize their superiority in terms of tracking speed and output DC power, which also improve photovoltaic system efficiency.
19

Dong, Bo, Yan Li, and Sheng Hui Wang. "Based on Fuzzy Logic Control of Recovery of the Method Research of Maximum Power Point Tracking." Advanced Materials Research 433-440 (January 2012): 622–28. http://dx.doi.org/10.4028/www.scientific.net/amr.433-440.622.

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It is very crucial to find a suitable tracking method, because improving the efficiency of the maximum power point tracking will improve the efficiency of tracking improved solar energy utilization to the present generation system. Based on fuzzy logic control of recovery of maximum power point tracking is enough to a system for solar energy utilization. Based on MATLAB/simulink software, comparing the fuzzy logic controller of different dimensions and different simulation emulated, this article find each factor to influence the tracking accuracy and speed, and it will provide the basis for different systems.
20

Marańda, W., and M. Piotrowicz. "Efficiency of maximum power point tracking in photovoltaic system under variable solar irradiance." Bulletin of the Polish Academy of Sciences Technical Sciences 62, no. 4 (December 1, 2014): 713–21. http://dx.doi.org/10.2478/bpasts-2014-0077.

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Abstract Field conditions decrease the energy output of photovoltaic (PV) systems, mainly due to excessive temperatures. However, in regions with moderate ambient temperatures, as in Poland, solar energy is commonly delivered with highly fluctuating irradiance. This introduces yet another source of energy losses due to the non-ideal tracking of actual position of Maximum Power Point (MPP). Majority of PV-systems are equipped with DC/AC and grid-connected inverter. Since the solar energy flux is variable, an adequate MPP-tracking algorithm is required to handle a wide range of load levels and face rapid changes of input power. Along with the essential DC/AC conversion, the quality of MPP-tracking must also be taken into account in evaluation of inverter efficiency. The tracking in dynamic conditions has been addressed only recently. Several algorithms has been studied theoretically, experimentally or in laboratory conditions by applying artificial input test-patterns. This work takes the opposite approach by applying the recorded real-life solar irradiance and simulating the tracking behavior to study the problem for true field conditions in Poland. The simulation uses the unique high-quality irradiance data collected with 200 ms time resolution. The calculation of both static and dynamic MPP-tracking efficiency has been performed for representative variable-cloudy day, applying commonly used Perturb&Observe tracking algorithm.
21

Hidayanti, Fitria. "Dual-Axis Solar Tracking System Efficiency for Hydroponics Pump." International Journal of Emerging Trends in Engineering Research 8, no. 6 (June 25, 2020): 2631–34. http://dx.doi.org/10.30534/ijeter/2020/67862020.

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22

Vatasescu, M., I. Visa, D. Diaconescu, I. Hermenean, N. Creanga, and D. Tohoneanu. "New solar angles and their corresponding tracking systems efficiency." Renewable Energy and Power Quality Journal 1, no. 08 (April 2010): 903–8. http://dx.doi.org/10.24084/repqj08.511.

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23

Suh, Kisoo, and Yunsung Eom. "Price Efficiency of KOSPI200 Tracking ETF and Its Determinants." Korean Corporation Management Review 26, no. 5 (October 31, 2019): 1–24. http://dx.doi.org/10.21052/kcmr.2019.26.5.01.

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24

Pasaribu, Nova, Rusdianasari, and Aida Syarif. "Efficiency of 9KWp Sun Tracking Photovoltaic in Palembang, Indonesia." IOP Conference Series: Earth and Environmental Science 347 (November 8, 2019): 012129. http://dx.doi.org/10.1088/1755-1315/347/1/012129.

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25

Varga, Dezső, Gábor Nyitrai, Gergő Hamar, and László Oláh. "High Efficiency Gaseous Tracking Detector for Cosmic Muon Radiography." Advances in High Energy Physics 2016 (2016): 1–11. http://dx.doi.org/10.1155/2016/1962317.

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A tracking detector system has been constructed with an innovative approach to the classical multiwire proportional chamber concept, using contemporary technologies. The detectors, covering an area of 0.58 square meters each, are optimized for the application of muon radiography. The main features are high (>99.5%) and uniform detection efficiency, 9 mm FWHM position resolution, and filling gas consumption below 2 liters per hour for the nontoxic, nonflammable argon and carbon dioxide mixture. These parameters, along with the simplicity of the construction and the tolerance for mechanical effects, make the detectors a viable option for a large area muography observation system.
26

Johnson, Ben, Hortense Bioy, Alastair Kellett, and Lee Davidson. "On the Right Track: Measuring Tracking Efficiency in ETFs." Journal of Index Investing 4, no. 3 (November 30, 2013): 35–41. http://dx.doi.org/10.3905/jii.2013.4.3.035.

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27

Zhong, W. X., and S. Y. R. Hui. "Maximum Energy Efficiency Tracking for Wireless Power Transfer Systems." IEEE Transactions on Power Electronics 30, no. 7 (July 2015): 4025–34. http://dx.doi.org/10.1109/tpel.2014.2351496.

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28

Kirol, Christopher P., Dylan C. Kesler, Brett L. Walker, and Bradley C. Fedy. "Coupling Tracking Technologies to Maximize Efficiency in Avian Research." Wildlife Society Bulletin 44, no. 2 (May 6, 2020): 406–15. http://dx.doi.org/10.1002/wsb.1092.

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29

Ang, B. W., and X. Y. Xu. "Tracking industrial energy efficiency trends using index decomposition analysis." Energy Economics 40 (November 2013): 1014–21. http://dx.doi.org/10.1016/j.eneco.2013.05.014.

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30

Smith, Andrew. "“How Are We Doing?” Tracking Efficiency, Utilization, and Productivity." Universal Journal of Industrial and Business Management 1, no. 4 (December 2013): 137–40. http://dx.doi.org/10.13189/ujibm.2013.010402.

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31

Seme, Sebastijan, Gorazd Štumberger, and Jože Voršič. "Maximum Efficiency Trajectories of a Two-Axis Sun Tracking System Determined Considering Tracking System Consumption." IEEE Transactions on Power Electronics 26, no. 4 (April 2011): 1280–90. http://dx.doi.org/10.1109/tpel.2011.2105506.

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32

Ramireddy, P., and Dr G. Ramya. "Investigation on Maximum Power Point Tracking Algorithm (INC and FLC) for Effective Utilization of Power Under Partial Shaded Photovoltaic System." Alinteri Journal of Agriculture Sciences 36, no. 1 (June 22, 2021): 342–49. http://dx.doi.org/10.47059/alinteri/v36i1/ajas21051.

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Aim: This paper makes a comparative analysis on two types of maximum power point tracking algorithm to trace the global peak power efficiently with minimum oscillation and less tracking time under partial shaded photovoltaic green energy systems. Materials & Methods: Incremental conductance (INC) and fuzzy logic (FLC) MPPT algorithm are implemented to analyze the tracking efficiency under varying insolation conditions. Results: FLC MPP algorithm extracts peak power of 97.6 W with tracking time of 0.003s while INC extracts 94 W with tracking time of 0.004s. Conclusion: FLC MPPT algorithm provides better efficiency compared to INC algorithm for the selected data set.
33

Li, Yani, Zhangming Zhu, Yintang Yang, Yadong Sun, and Xu Wang. "A Novel Interface Circuit with 99.2% MPPT Accuracy and 1.3% THD for Energy Harvesting." Journal of Circuits, Systems and Computers 26, no. 11 (March 28, 2017): 1750176. http://dx.doi.org/10.1142/s0218126617501766.

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To improve conversion efficiency and output quality of the energy harvester, a novel interface circuit with composite maximum power point tracking (MPPT) in energy harvesting applications is proposed in this paper. By using the ultra-low-voltage multiplier with digital control and simple one-cycle variable frequency technique, the converter realizes fast power tracking and high conversion efficiency, and minimizes the power consumption and harmonics, thereby obtaining high tracking precise and low total harmonic distortion (THD). Implemented in 65-nm CMOS process, this converter achieves 85.9% peak power efficiency with dc output voltage of 1.6[Formula: see text]V. The peak tracking efficiency and THD are 99.2% and 1.3%, respectively. The peak output power is 18.31[Formula: see text][Formula: see text]W, and the power loss of the entire converter is only 16.53[Formula: see text][Formula: see text]W.
34

Xu, Yan, Xiao Feng Zhu, Guo Sheng Zhang, and Yang Li. "Simulation and Comparison on Photoelectric Conversion Efficiency for Auto Tracking Solar System and Fixed Solar System." Applied Mechanics and Materials 263-266 (December 2012): 620–23. http://dx.doi.org/10.4028/www.scientific.net/amm.263-266.620.

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Assuming the clearness and cloudless weather in Beijing area, the received solar radiation power is simulated according to three different auto-tracking solar systems and fixed solar system by Matlab. The tracking intervals of three different auto-tracking solar systems are separately 60mins, 30mins and 10mins. The daily mean solar radiation, the monthly mean solar radiation and the yearly mean solar radiation are simulated for three auto-tracking solar systems and fixed solar system. The simulation results can be used as the auto-tracking solar system design reference for engineers, and helpful for solar system optimizing.
35

Zhang, Lieping, Yanlin Yu, Hang Ma, Yu Zhang, and Peng Cao. "Design of Photovoltaic Power Supply MPPT Circuit for WSN Node Based on Current Observation." International Journal of Online Engineering (iJOE) 14, no. 07 (July 27, 2018): 45. http://dx.doi.org/10.3991/ijoe.v14i07.8495.

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In view of the problem of low energy collection efficiency and low efficiency of photovoltaic power supply modules in wireless sensor networks, a maximum power point tracking algorithm suitable for photovoltaic power supply of wireless sensor nodes is proposed. Firstly, the photovoltaic cell model is analyzed. Based on this, the traditional maximum power point tracking algorithm is analyzed. Combining with the advantages of disturbance observing method and load current maximization method, the problem of low working efficiency and low energy collection efficiency of functional modules is solved. Current observation method maximum power point tracking algorithm, and complete the relevant hardware circuit design. Experimental results show that the power consumption of MPPT circuit is low, and the efficiency caused by environmental factors is very small. The efficiency is kept above 90% and the overall system efficiency is about 87%, which provides a stable and reliable photovoltaic power supply for WSN nodes.
36

Yang, Yong You, Wei Dong Yi, and Ko Wen Jwo. "High Efficiency MPPT Using Piecewise Linear Approximation and Temperature Compensation." Advanced Materials Research 772 (September 2013): 658–63. http://dx.doi.org/10.4028/www.scientific.net/amr.772.658.

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We propose a method of piecewise linear approximation with temperature compensated to model the characteristics of the maximum power points locus of photovoltaic panel under different irradiance levels and temperatures. This method can fast tracking photovoltaic panel maximum power point, and can also overcome the problem of the temperature drift. The simulation and experiment results indicate that, the maximum power point tracking efficiency of the proposed method is up to 90% ~ 99.9% under diffident irradiance.
37

Balogun, Emmanuel B., Xu Huang, and Dat Tran. "Efficiency of Sensor Devices Used in Dynamic Solar Tracking System: Comparative Assessment Parameters Review." Applied Mechanics and Materials 448-453 (October 2013): 1437–45. http://dx.doi.org/10.4028/www.scientific.net/amm.448-453.1437.

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There have been recent research interests in obtaining an optimum efficient design for the solar tracking system in published papers over the past three decades. This paper presents an in-depth overview of the assessment parameters and characteristics of various sensor devices employed to provide precise feedback control mechanism used in dynamic solar tracking systems. We found that the webcam sensor device has superior capability compared to other solar sensors devices. In conclusion, we propose a future research direction for a better efficiency and effective dynamic solar tracking system. Keywords: Solar tracking; Solar sensors; Solar panels; Overall output generated energy; Webcam; Photoresistors; Photodiodes; Feedback Control mechanism
38

Yoo, Jong Ho, Sun Hee Kim, Dong Jun An, Won Chang Choi, and Soon Jong Yoon. "Generation Efficiency of Tracking Type Floating PV Energy Generation Structure Using Fiber Reinforced Polymer Plastic (FRP) Members." Key Engineering Materials 730 (February 2017): 212–17. http://dx.doi.org/10.4028/www.scientific.net/kem.730.212.

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In this paper, the tracking type floating PV energy generation system is studied and developed to improve the generation efficiency. First of all, to find suitable material for members of floating type PV energy generation system, suitability analysis for several materials such as a steel, aluminum, polyethylene (PE), and fiber reinforced polymer plastic (FRP) is conducted. Then the design for tracking type floating PV energy generation system is also conducted. The tracking type floating PV energy generation system is designed, fabricated, and installed at Hapcheon dam, Korea. Finally, to estimate the energy generation efficiency of tracking type floating PV energy generation system, comparison with land fixed type PV energy generation system is performed. As a result of the comparison, it is confirmed that if the period of operating PV energy generation system is longer, the economic efficiency of tracking type will be higher than that of land fixed type.
39

P, Mayilvahanan, Purushothaman S, and Rajeswari P. "Facial tracking in video transfer using watershed segmentation." International Journal of Engineering & Technology 3, no. 4 (November 13, 2014): 535. http://dx.doi.org/10.14419/ijet.v3i4.3633.

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This paper presents the implementation of watershed segmentation for facial tracking. It focuses on tracking face of human in a continuous video transfer. The database is obtained from internet resource. Tracking efficiency is 97.2%. Keywords: Facial Tracking, Watershed Segmentation, Motion Estimation.
40

Harmini, Harmini, and Titik Nurhayati. "DESAIN DAN IMPLEMENTASI MAXIMUM POWER SOLAR TRACKER MENGGUNAKAN PANEL PHOTOVOLTAIC DI KOTA SEMARANG." eLEKTRIKA 10, no. 1 (June 19, 2019): 5. http://dx.doi.org/10.26623/elektrika.v10i1.1103.

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<p>The purpose of this research is to design and implementation Maximum Solar Power Tracking system using photovoltaic panel, in order to increase solar panel efficiency and power. Data collection is done for the condition in Semarang city. The result of the research is expected to be base in planning of solar power system in Semarang city, whether it is for light-ing lamp planning and for Solar Home System (SHS). This MPPT system design uses standard 180 degree servo motor to drive photovoltaic panel and control circuit using ATmega IC, while simulation using MATLAB program. Tracking is done by online tracking method by moving the photovoltaic panel to the radiation of the sun. Tracking simulation is done with step 20, 50 and 180 step. The average of voltage generated by system without tracking is 3.97 Volt while the average volt-age generated by tracking system is 4.72 Volt. Efficiency between system without tracking and tracking system is 66.28% for tracking system and 78.78% for tracking system. </p><p> Keywords: MPPT,Solar Photovoltaic, Tracking</p>
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Harmini, Harmini, and Titik Nurhayati. "DESAIN DAN IMPLEMENTASI MAXIMUM POWER SOLAR TRACKER MENGGUNAKAN PANEL PHOTOVOLTAIC DI KOTA SEMARANG." Elektrika 10, no. 1 (April 4, 2018): 5. http://dx.doi.org/10.26623/elektrika.v10i1.1117.

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<p>The purpose of this research is to design and implementation Maximum Solar Power Tracking system using photovoltaic panel, in order to increase solar panel efficiency and power. Data collection is done for the condition in Semarang city. The result of the research is expected to be base in planning of solar power system in Semarang city, whether it is for light-ing lamp planning and for Solar Home System (SHS). This MPPT system design uses standard 180 degree servo motor to drive photovoltaic panel and control circuit using ATmega IC, while simulation using MATLAB program. Tracking is done by online tracking method by moving the photovoltaic panel to the radiation of the sun. Tracking simulation is done with step 20, 50 and 180 step. The average of voltage generated by system without tracking is 3.97 Volt while the average volt-age generated by tracking system is 4.72 Volt. Efficiency between system without tracking and tracking system is 66.28% for tracking system and 78.78% for tracking system.</p><p>Keywords: MPPT,Solar Photovoltaic, Tracking.</p>
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Morey, Stephanie A., Nicole A. Thomas, and Jason S. McCarley. "Dual-Task Redundant-Target Processing: The Case of the Limited Capacity Parallel Model." Proceedings of the Human Factors and Ergonomics Society Annual Meeting 62, no. 1 (September 2018): 661–65. http://dx.doi.org/10.1177/1541931218621476.

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We examined the effect of a central tracking task on visual target processing efficiency in a combined target detection / manual tracking paradigm. Participants performed a redundant-target task by itself, and concurrently with the tracking task. A measure of workload capacity gauged target processing efficiency. Processing was less efficient than predicted by a standard parallel race model under both levels of task load. However, data suggested no difference in processing efficiency between the single-and dual-task conditions. Our findings provide further evidence that processing capacity for peripheral visual targets is consistently limited but robust against changes to concurrent task load.
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Kim, Byung-Sun, and Soon-Sik Choi. "Elaboration of Power System for Solar Power High Efficiency." Korean Society of Technical Education and Training 25, no. 3 (September 30, 2020): 33–41. http://dx.doi.org/10.29279/kostet.2020.25.3.33.

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A photovoltaic inverter achieves maximum power tracking control considering the voltage and current of each string to produce maximum power. However, if the voltage and current characteristics of individual strings, including degraded modules, deteriorate, the total power production during maximum power point tracking(MPPT) control will reduce significantly. Therefore, we want to use the Internet of things(IoT) -based sensors to produce a string containing aging modules and insert a device that compensates for power (IoT-type power compensator with aging PV strings) so that the overall power production can be maximized at all times when controlling MPPT.
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Magagula, Sibonelo G. "Power Efficiency Optimization of Switched Reluctance Generator (SRG) Using Power Disturbance Maximum Power Point Tracking (MPPT)." International Journal of Computer and Electrical Engineering 9, no. 2 (2017): 445–54. http://dx.doi.org/10.17706/ijcee.2017.9.2.445-454.

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Voloşencu, Constantin. "A Comparative Analysis of Some Methods for Wind Turbine Maximum Power Point Tracking." Mathematics 9, no. 19 (September 27, 2021): 2399. http://dx.doi.org/10.3390/math9192399.

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The study in the paper is placed in the broad context of research for increasing the efficiency of capturing and converting wind energy. The purpose of the study is to analyze some mathematical methods for maximum power point tracking in wind turbines. The mathematical methods studied are on–off control, fuzzy control, and neural predictive control. The rules developed for maximum power point tracking are presented. The related control structures and their design methods are presented. The behaviors of the control systems and their energy efficiency are analyzed. Maximum power point tracking ensures a significant increase in the energy generated compared to the unfavorable case of operation at a small and constant load torque. The differences in energy efficiency between the methods of maximum power point tracking studied are small.
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Nelson, K., Y. Guo, D. Amidei, and E. Diehl. "Performance of Michigan sMDT prototype chambers for the HL-LHC ATLAS muon detector upgrade." Journal of Instrumentation 16, no. 11 (November 1, 2021): P11027. http://dx.doi.org/10.1088/1748-0221/16/11/p11027.

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Abstract A new small-diameter Monitored Drift Tube (sMDT) chamber has been developed for the muon spectrometer of the ATLAS experiment to handle the higher collision rates expected at the CERN High Luminosity Large Hadron Collider (HL-LHC). This paper presents measurements of the tracking resolution and hit efficiency of two prototype sMDT chambers constructed at the University of Michigan. Using cosmic-ray muons the sMDT tracking resolution of 103.7 ± 8.1 μm was measured for one chamber and 101.8 ± 7.8 μm for the other, compared with a design resolution of 106 μm. A further tracking resolution improvement to 83.4 ± 7.8 μm was obtained by using new high-gain readout electronics which will be added for HL-LHC. An average tracking efficiency of (98.5 ± 0.2)% was found for both chambers. The methodology used to determine the detector tracking resolution and efficiency, including reconstruction of sMDT data and a Geant4 simulation of the test chamber, is presented in detail.
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Muhammad, Burhan, Jin Oh Seung, Kim Choon Ng, and Wongee Chun. "Experimental Investigation of Multijunction Solar Cell Using Two Axis Solar Tracker." Applied Mechanics and Materials 818 (January 2016): 213–18. http://dx.doi.org/10.4028/www.scientific.net/amm.818.213.

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Solar cell is the most cost effective and simple device to harvest solar energy as compared to other systems. Many types of single junction solar cell are available in market but their main problem is low efficiency. This paper focuses on the performance investigation of high efficiency multijunction solar cell using two axis solar tracker. High solar concentration is needed for multijunction solar cell with accurate solar tracking to get maximum energy output. Solar tracker is based upon the astronomical algorithm of solar tracking. Tracking System consists of GPS module, AVR microcontroller, stepper motors with drive modules and some other accessories. The tracking system takes geographical location data from GPS to calculate sun position for tracking.
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Muhammad, Burhan, Jin Oh Seung, Kim Choon Ng, and Wongee Chun. "Experimental Investigation of Multijunction Solar Cell Using Two Axis Solar Tracker." Applied Mechanics and Materials 819 (January 2016): 536–40. http://dx.doi.org/10.4028/www.scientific.net/amm.819.536.

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Solar cell is the most cost effective and simple device to harvest solar energy as compared to other systems. Many types of single junction solar cell are available in market but their main problem is low efficiency. This paper focuses on the performance investigation of high efficiency multijunction solar cell using two axis solar tracker. High solar concentration is needed for multijunction solar cell with accurate solar tracking to get maximum energy output. Solar tracker is based upon the astronomical algorithm of solar tracking. Tracking System consists of GPS module, AVR microcontroller, stepper motors with drive modules and some other accessories. The tracking system takes geographical location data from GPS to calculate sun position for tracking.
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Ma, Denglong, Guofang Xie, Weigao Mao, Jianmin Gao, Hang Yi, and Dangchao Li. "Comparison and Improvement of Bioinspired Mobile Algorithms to Trace the Emission Source Based on the Simulation Scenarios." Atmosphere 13, no. 5 (April 21, 2022): 661. http://dx.doi.org/10.3390/atmos13050661.

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Hazardous gas emissions may have serious consequences for surrounding residents and the environment. Bioinspired mobile robots equipped with gas sensors have the potential to become a solution for precisely tracking and locating emission sources. In this study, the performance, efficiency, and accuracy of various bionic algorithms with bioinspired mobile sensors, i.e., silkworm, E. coli, ZigZag, and step-up algorithms, were compared using field simulations to track emission sources in the atmosphere. In the tracing process, the determination criteria of maximum concentration, minimum concentration (i.e., 0), and concentration gradient were discussed quantitatively. The simulation results showed that the silkworm algorithm has the best performance in locating the emission source, while the E. coli algorithm has the highest tracking efficiency. Therefore, a single source-determination criterion may be insufficient, since tracking accuracy and efficiency can vary with different simulation algorithms. To address these concerns, a new tracking strategy driven by the inverse motion and interface gradient (RMIG) was proposed, based on the behaviors of female mosquitoes seeking hosts by tracking CO2 plumes, to improve tracking efficiency. It was found that the locating efficiency driven by RMIG is greatly improved and higher than that of the E. coli algorithm in the tested cases, with 40% to 100% explicitly enhanced. Finally, the optimal correlated matching of concentration distribution (OCMCD) method was used to locate the source with a mobile sensor. Compared with traditional and common source-determination criteria, the RMIG-OCMCD method can significantly improve location accuracy. The proposed RMIG-OCMCD method could be a practical choice for tracking emission sources in the atmosphere if an appropriate search strategy is designed.
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Xie, Ying Hui. "Tracking Frequency Resonant Coupling Energy Wireless Transmission Research." Advanced Materials Research 740 (August 2013): 56–61. http://dx.doi.org/10.4028/www.scientific.net/amr.740.56.

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The problem of transceiver coil resonance frequency detuning is solved tentatively on resonant coupling energy wireless transmission in this paper. The circuit model of the wireless transmission system of the resonant coupling electrical energy is first studied, the relationship between the parameters of the system and the transmission efficiency of the various parts is analyzed, and yhe studies have shown that the change in the amount of the transmitting coil inductance greater impact on the transmission efficiency, while the receiving coil inductance change in the amount of efficiency small, and thus the proposed phase locked loop frequency tracking technology, to ensure that the transceiver coil resonant frequency to ensure that the transmission efficiency of the system. The feasibility of the design frequency tracking system is verified with the experimental results.
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