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[IEEE 2018 International Conference on Electrical Engineering and Informatics (ICELTICs) - Banda Aceh (2018.9.19-2018.9.20)] 2018 International Conference on Electrical Engineering and Informatics (ICELTICs)(44501) - Performance Comparison Between PID and Fuzzy Algorithm for Sun Tracker Based on Tetrahedron Geometry Sensor
摘要： The amount of solar energy could be acquired optimally by proper tracking of sun movement in a sun tracker. A sun tracker is a device which tracks the sun as it moves on its path through the sky during the day, exposing the solar cells to an increased amount of sunlight and hence producing more electricity. In this paper, we compare the performance and optimization of two types of sun tracker based on tetrahedron geometry using PID and Fuzzy logic algorithm. These two sun trackers are built identically and experimental data acquisition of servo movement and load of solar cell performed side by side. PID and fuzzy logic algorithm are used to control the servo movement of the dual-axis sun tracker. We record the load received by solar cell which attached to both sun tracker and compare the result. The study shows that fuzzy logic algorithm controller performs better than PID controller which can be seen from the amount of load received by solar cell.
关键词： sun tracker,solar cell,PID,fuzzy algorithm,data logging
更新于2025-09-23 15:23:52
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Fabrication of large scale PS monolayer colloidal crystal film by using a novel secondary self-assembly method for nanoimprint technique
摘要： In the dynamic wireless power transfering(WPT) process of electric vehicle, the charging current of the battery is affected by some factors, such as the primary coil current and the relative position of the primary and secondary coils. Moreover, due to the travel of the electric vehicle, it is difficult to establish effective feedback between the primary side and secondary side. In this case, the charging method based on the primary side and secondary side independent control is analyzed. In this paper, it shows that the PID controller is set up after modeling the transmitter and the receiver. The effectiveness of this strategy is also verified by simulation on MATLAB.
关键词： WPT,electric vehicles,constant current control,PID
更新于2025-09-23 15:22:29
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The Influence of the EVA Film Aging on the Degradation Behavior of PV Modules Under High Voltage Bias in Wet Conditions Followed by Electroluminescence
摘要： The influence of the ethylene-vinyl acetate (EVA) film quality on potential induced degradation was studied on in-house developed mini modules with p-type monocrystalline silicon solar cells. The modules were assembled with EVA films of equivalent qualities, but different ages and exposed to an accelerated test (relative humidity = 85%, T = 60 °C, Vbias = +1000 V). The age of the EVA film was determined from the time we received the EVA film, and opened the sealed enclosure and the time of lamination. After the EVA film was removed from the sealed enclosure, it was kept in a dark place at room temperature. The storage times of the “fresh,” “aged,” and “expired” films were: less than 14 d, around 5 mo, and more than 5 years, respectively. While modules with a “fresh” EVA film exhibit almost no degradation, the modules with the “aged” EVA film degrade very rapidly and severely. Their degradation rate was around 0.2%/d during the 2000 h of damp heat test. We also observed a strong silver line corrosion, which occurs because of the peroxide leftovers in the “aged” EVA films.
关键词： photovoltaic (PV) modules,high voltage stress,EVA film,Degradation,potential induced degradation (PID),leakage current
更新于2025-09-23 15:21:01
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Elucidating the mechanism of potential induced degradation delay effect by ultraviolet light irradiation for p-type crystalline silicon solar cells
摘要： A mechanism of potential induced degradation (PID) delay effect by ultraviolet (UV) light irradiation during PID test for p-type crystalline silicon (c-Si) solar cells was proposed in this work. The degradation rate of the solar cell performances is slowed down by the UV light irradiation in the 300–390 nm wavelength range during PID test. The conductivity increase of the silicon nitride (SiNx) anti-reflection coating (ARC) layer on the solar cell surface under UV light irradiation during PID tests, which relates to the mechanism preventing the penetration of sodium ions into the active cell layer, induces the PID delay effect for the p-type c-Si solar cells. The PID delay effect was also analyzed by a microwave photo-conductance decay (μ-PCD) technique in this work. The reduction behavior of the components in the μ-PCD signal curves including rapid (τ1) and slow (τ2) decay time constants and the effective lifetime (τeff) presents a good correlation with the performance degradation behavior of the solar cells over PID test duration. Moreover, the reduction rate of these components is also slowed down under the UV light irradiation in the 300–390 nm wavelength range during PID tests. Notably, their reduction behavior was compatible with the mechanism of the conductivity increase of the SiNx ARC layer under UV light irradiation.
关键词： Potential induced degradation (PID),Silicon solar cells,UV irradiation,Silicon nitride (SiNx),Microwave photo-conductance decay
更新于2025-09-23 15:19:57
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Influence of Molybdenum Back Contact on the PID Effect for Cu(In,Ga)Se2 Solar Cells
摘要： The authors investigated the effect of an applied high voltage (1 kV) across the thickness of a soda-lime glass substrate of Cu(In,Ga)Se2 (CIGS) thin-film solar cells. Two types of CIGS cells were tested, differing only in the deposition process of the molybdenum (Mo) back contact. Whilst one cell type was susceptible to potential induced degradation (PID), the other exhibited highly increased stability against PID. PID occurs for PID-susceptible cells after the transfer of a certain amount of charge through the soda-lime glass substrate when the Mo back contact of the cell operates as a cathode (negatively biased versus backside of the substrate). Capacitance–voltage and electron-beam-induced current measurements showed an enlarged space charge region expanding to the Mo back contact and a lowered doping density by a negative potential for PID-susceptible cells. Glow discharge optical emission spectroscopy (GDOES) revealed an accumulation of sodium (Na) in the solution-grown CdS buffer layer and a segregation on the surface of the ZnO:Al window layer for higher charges for PID-susceptible cells. Cells with increased PID immunity did not show an increase of Na for charges up to around 9 mC/cm2. We demonstrate that it is possible to improve the PID stability of CIGS solar cells by modification of the molybdenum back contact.
关键词： sodium,photovoltaic,PID,CIGS,GDOES,EBIC,CV,stability PV
更新于2025-09-23 15:19:57
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[IEEE 2020 5th International Conference on Devices, Circuits and Systems (ICDCS) - Coimbatore, India (2020.3.5-2020.3.6)] 2020 5th International Conference on Devices, Circuits and Systems (ICDCS) - Recent Research Trends in Solar Photovoltaic Systems
摘要： In recent years, conventional energy sources are depleting and getting exhausted. In replacement of this, solar Photovoltaic (PV) systems are used because of its free availability, renewability and less operating cost. But the constraints such as low ef?ciency, dependability on weather conditions are overcome by using maximum power point tracking(MPPT) algorithms and ef?cient converters to produce the maximum power output. MATLAB/Simulink is used to model and analyze PV array, MPPT algorithms, and converters. In this paper, recent research developments in PV array, various MPPT techniques, many ef?cient Converters are presented. This paper will give an overall idea about the present research trends in the ?eld of Solar Photovoltaic systems.
关键词： Solar Photovoltaic Systems,Converters,Solar PV array,PID controllers,MPPT
更新于2025-09-23 15:19:57
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Auto-Tuning PID Distributed Power Control for Next-Generation Passive Optical Networks
摘要： This work proposes an adaptive auto-tuning distributed power control strategy aided by proportional-integral-derivative (PID) and by Adaline artificial neural network (AANN) approaches. The power control mechanism is realized for the upstream of next-generation passive optical networks (NG-PON), primarily deployed in the context of optical code division multiplexing access passive networks. The primary results demonstrate the ability of control and adaptive auto-tuning of the proposed AANN-based DPCA, considering realistic error estimates in the optical channel. For the sake of comparison, an adaptive auto-tuning procedure through the Tyreus–Lyuben method is included, indicating superior Euclidean norm of the NMSE performance combined with the lower complexity of the proposed NN-based DPCA method.
关键词： Tyreus-Lyuben (TL),Adaptive auto-tuning,Distributed power control algorithm (DPCA),Proportional-integral-derivative (PID),Adaline Neural Network (AANN),Next-generation passive optical networks (NG-PONs)
更新于2025-09-19 17:15:36
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[IEEE 2019 12th International Conference on Intelligent Computation Technology and Automation (ICICTA) - Xiangtan, China (2019.10.26-2019.10.27)] 2019 12th International Conference on Intelligent Computation Technology and Automation (ICICTA) - Design of Z-Axis Position Servo Control System for Laser Processing Based on Fuzzy PID Control
摘要： In order to solve the problems of low robustness and poor immunity of traditional Z-axis position servo control system for laser processing, a design scheme of Z-axis position servo control system for laser processing based on fuzzy PID control is proposed. The hardware configuration of the system improved and servo controller is added to improve the system performance. Combined with fuzzy PID control principle, the system software operation algorithm and flow are optimized to realize the design of Z-axis position follow-up control system for laser processing. The experimental prototype was built by high-precision laser sensor, and the follow-up control of the laser processing system was realized, so that the laser spot kept a constant distance from the surface to be processed. This laid a foundation for the next intelligent control technology of laser processing.
关键词： Follow-up control,Laser processing,Z-axis position,fuzzy PID control
更新于2025-09-19 17:13:59
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Comparison of the Performance of Photovoltaic Power Generation-Consumption System with Push-Pull Converter under the Effect of Five Different Types of Controllers
摘要： In this study, a dynamic system has been modeled to efficiently use a photovoltaic generation and control system (PVGCS) for driving of a medium power off-grid electric machine. The measures have been taken to respond to three different disturbing factors in this system. First, the photovoltaic panels selected for energy generation have a variable solar radiation effect. Second, the DC motor load at the system output is assumed to have a variable torque. Third, a variable reference voltage, which is determined even in the case of time-varying energy generation and consumption of the system, is followed with minimum error. For this purpose, a push-pull converter has been chosen as a highly flexible structure since it is predicted that it can provide stable and effective variable DC voltage at increasing and decreasing level required for DC motor. The control of the DC voltage at different levels to be provided by the push-pull converter is performed by PI, fuzzy logic, fuzzy-tuned PI, 2-DOF PI, and fractional PID logic whose coefficients are selected by appropriate methods, respectively. The system efficiency and stability under the influence of these five different advanced controllers are compared. In the case of two disturbing factors affecting the system, the difference values (errors) of the voltage generated by each selected controller with the reference voltage are determined comparatively. The studies were carried out by using dynamic system modeling in MATLAB-SIMULINK software. In addition, the results of this study proved which type of controllers is more successful in controlling systems with the second order and more instability factors and which of them responds to sudden changes in errors more quickly.
关键词： fuzzy logic controller,fuzzy-tuned PI controller,2-DOF PI controller,fractional PID controller,push-pull converter,PI controller,photovoltaic generation,DC motor
更新于2025-09-16 10:30:52
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[IEEE 2019 18th International Conference on Optical Communications and Networks (ICOCN) - Huangshan, China (2019.8.5-2019.8.8)] 2019 18th International Conference on Optical Communications and Networks (ICOCN) - Study of temperature controlling of a solid Fabry–Pérot etalon
摘要： The solid Fabry–Pérot etalon is a widely used optical passive device in optical communications. However, the optical characteristics of Fabry–Pérot etalons are frequency locker and the absorption measurements in THz range. Experimental results showed that the wavelength drift of the etalon could reach 0.5 pm/℃. temperature dependent. In this study, we designed a temperature Insulation structure and employed a PID (Proportional–Integral–Derivative) controlling algorithm. The temperature influence on the etalon transmission spectrum is also discussed according to its temperature characteristics. By analyzing the experimental data, the effects of temperature control and non-temperature control on the Fabry–Pérot etalon were compared.
关键词： Fabry–Pérot etalons,PID,temperature control
更新于2025-09-16 10:30:52