- 标题
- 摘要
- 关键词
- 实验方案
- 产品
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Evaluation of the Energy Performance in LED Lamps with Integrated Driver through Multicriteria Analysis
摘要： The lighting industry is having a great change with the advancement of LED technology, allowing the consumer use a more efficient product with longer lifespan, varied colors and shapes. These facts are beneficial to the consumer, but bring with them, a greater difficulty in choosing the product of better energy performance. In this work, a multicriteria analysis will be performed to evaluate the energy performance of LED bulbs with integrated driver in the Brazilian market. In this research, a hybrid multi-criteria approach TOPSIS with entropy weights was used. For this, ten different suppliers with similar technical characteristics were chosen and the tests required by the Technical Regulation of the Quality in LED lamps with integrated driver, Inmetro Order no 389/2014 that regulate these product in Brazil were carried out. In addition to the energy efficiency results, the results of energy quality and the quality of the emitted light were also evaluated. Through these analyzes, a ranking was elaborated with the total energetic performance of the evaluated lamps, with the objective of support the end users about the best product, since; there are several technical parameters to be considered.
关键词： energy efficiency,power quality,LED,multicriteria analysis
更新于2025-09-19 17:13:59
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Design and performance analysis of improved Adaline technique for synchronization and load compensation of grida??tied photovoltaic system
摘要： The paper discusses the design, modeling, simulation, and implementation of improved Adaline technique, which has been used for grid synchronization as well as extended further for load compensation. A simple but effective method is proposed to improve the performance of the conventional Adaline technique. The conventional Adaline controller uses a fixed learning rate while the proposed Adaline is developed using variable learning, which improves both the steady-state and dynamic response. Simulation and experimental results have been demonstrated, which confirm the feasibility of the proposed approach. Suitable performance comparisons highlight the effectiveness of the proposed approach.
关键词： power quality,ANN,phase-locked loops,synchronization,harmonic distortion
更新于2025-09-19 17:13:59
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[IEEE 2019 Applications of Electromagnetics in Modern Techniques and Medicine (PTZE) - Janow Podlaski, Poland (2019.6.9-2019.6.12)] 2019 Applications of Electromagnetics in Modern Engineering and Medicine (PTZE) - Small photovoltaic installation in the power grid
摘要： The article discusses basic aspects of selecting a prosumer solar system. A simplified method for estimating the actual electricity production is shown. It was indicated how the direction and angle of light beam onto the installation affects the amount of energy produced. One and three-phase photovoltaic installations operating in an open-type power system are discussed. The discussion was supplemented with a practical example comparing electricity production.
关键词： uninterruptible power supply,supply voltage parameters,power quality
更新于2025-09-16 10:30:52
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[IEEE 2019 IEEE 1st International Conference on Energy, Systems and Information Processing (ICESIP) - Chennai, India (2019.7.4-2019.7.6)] 2019 IEEE 1st International Conference on Energy, Systems and Information Processing (ICESIP) - Multifunctional VSC Controlled Solar Photovoltaic System with Active Power Sharing and Power Quality (PQ) Improvement Features
摘要： This paper presents a multifunctional voltage sourced-converter (VSC) controlled solar photovoltaic (SPV) system with a generalized ‘dq’ and adaptive PLL-based include approach to extract the dual features. These enhanced active power sharing feature based on the availability of active power at DC-side collector bus while also serving as an active harmonic filter (AHF). The presented control is computationally less intensive and easy to formulate compared to its conventional counterpart like synchronous reference frame theory (SRFT). The objective of this work is to effectively extract the various ancillary services offered by multifunctional VSC in the power distribution system. The primary function of any grid- connected inverter (GCI) is to serve the active power demand of the load connected at the point of interconnection (PoI) in the power distribution network. However, the multifunctional VSC with presented control approach can also be utilized as AHF to attenuate the rich harmonic content present in source current, to mitigate the load reactive current demand, and to adequately supply the zero sequences harmonic component requirement of the unbalanced and nonlinear load by the fourth leg of the multifunctional VSC. Additionally, the proposed system typically ensures the unity power factor (UPF) operation. An incremental conductance (IC) based control technique is employed to optimize and continuously track the maximum intermittency. The power point usefulness of is demonstrated through transient test cases, conducted in the MATLAB/Simulink software environment. Additionally, its practicality is validated through a comprehensive set of experimental studies investigated on a laboratory developed prototype.
关键词： active harmonic filter,Multifunctional VSC,unity power factor operation,power quality improvement,grid-connected SPV system,renewable energy sources
更新于2025-09-16 10:30:52
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[IEEE 2019 Electric Power Quality and Supply Reliability Conference (PQ) & 2019 Symposium on Electrical Engineering and Mechatronics (SEEM) - K?rdla, Estonia (2019.6.12-2019.6.15)] 2019 Electric Power Quality and Supply Reliability Conference (PQ) & 2019 Symposium on Electrical Engineering and Mechatronics (SEEM) - Power Quality Assessment of Indoor LED Luminaires
摘要： Due to the fact that it is a semiconductor based lighting equipment, the LEDs have important effects on the power quality. In the ever-expanding lighting industry, the use of LED equipment is increasing day by day. Therefore, it is very important to analyze and interpret the effects of LEDs on the grid. In this study, power quality measurements of 4 different commercial LED luminaires have been realized and the results obtained have been interpreted. According to the measurements, it is found that the power factor values are acceptable for the luminaries when they are completely on. However, when the luminaries are dimmed, it has been observed that the power factor decreased and the current harmonics exceeded the limit values determined by the related standards. On the other hand, it is seen that all the luminaires provide flicker boundaries. As a result of the study, it has been concluded that the effects of dimmable equipment on power quality should be analyzed in more detail.
关键词： LED lamps,harmonics,flicker,power quality,power factor
更新于2025-09-16 10:30:52
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Resonance Instability of Photovoltaic E-Bike Charging Stations: Control Parameters Analysis, Modeling and Experiment
摘要： This article presents an in-situ comparative analysis and power quality tests of a newly developed photovoltaic charging system for e-bikes. The various control methods of the inverter are modeled and a single-phase grid-connected inverter is tested under different conditions. Models are constituted for two current control methods; the proportional resonance and the synchronous rotating frames. In order to determine the influence of the control parameters, the system is analyzed analytically in the time domain as well as in the frequency domain by simulation. The tests indicated the resonance instability of the photovoltaic inverter. The passivity impedance-based stability criterion is applied in order to analyze the phenomenon of resonance instability. In conclusion, the phase-locked loop (PLL) bandwidth and control parameters of the current loop have a major effect on the output admittance of the inverter, which should be adjusted to make the system stable.
关键词： grid-connected inverter,photovoltaic,solar mobility,resonance instability,power quality,solar charging
更新于2025-09-16 10:30:52
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Transient Stability Enhancement of Wind Farms using Photovoltaic Solar Plant as STATCOM
摘要： The aim of this study is to investigate the improvement of the performances and transient stability of grid connected Squirrel Cage Induction Generator based on Wind Farm (SCIG-WF) by using a new coordinated control between Grid Side Converter (GSC) of the Doubly Fed Induction Generator (DFIG) and photovoltaic solar plant converter (PV-SPC) as STATCOM. Thereby, the reactive power required by the SCIG-WF can be supplied either by the DFIGs (during normal condition) and with the PV-STATCOM during grid disturbances. This control strategy can fulfill the grid codes requirement such low voltage ride through capability by ensuring a no uninterrupted operation of the wind farm. The proposed control scheme is simulated by means of MATLAB/Simulink platform, based on a detailed system model. Through the simulated results, we can conclude that the proposed control for PV-SPC to operate as STATCOM is validated and the performances of the system are improved during normal and transient conditions.
关键词： system stability,squirrel cage induction generator,voltage regulation,low voltage ride through,power quality,Doubly-fed induction generator
更新于2025-09-16 10:30:52
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[IEEE TENCON 2019 - 2019 IEEE Region 10 Conference (TENCON) - Kochi, India (2019.10.17-2019.10.20)] TENCON 2019 - 2019 IEEE Region 10 Conference (TENCON) - A Pre-filtering based Current Control Strategy in Grid-tied Photovoltaic Systems with Active Power Filter for Harmonic Mitigation
摘要： This paper presents frequency adaptive pre-?ltering (FAPF) based an adaptive current control strategy in grid connected photovoltaic (PV) system with active power ?lter for harmonic mitigation at the distribution terminals. The proposed technique is used in the presence of steady state, voltage sag, voltage swell, load removal, unbalancing and distorted grid voltages conditions. A FAPF strategy employed through the dual second order generalized integrator (DSOGI). The performance of the proposed control scheme is examined under grid distorted, unbalancing and other transient conditions. Furthermore, the performance of the controller found good, more accurate and fast in nature. The current and voltage harmonics are eliminated by using FAPF scheme by using the differentiated frequency locked loop (dFLL) in the system which is also compute the estimated system frequency which gives as feed back to FAPF in the proposed controller. The fuzzy logic proportional integral derivative (FLPID) controller is used to synchronize the DC bus voltage constant at the DC voltage regulator. The proposed adaptive current control strategy is notably improves the system performance in the presence of unbalancing, distorted and steady state conditions. The system is implemented through MATLAB R2014a software and the simulation outcomes are proved via FPGA based real-time platform using vertex-7 VC-707 evaluation kit.
关键词： DSOGI,dFLL,FLPID,Power quality,APF,MPPT technique,PV,Total harmonic deduction
更新于2025-09-16 10:30:52
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Integration Monitoring of On-grid Photovoltaic System: Case Study
摘要： The aim of the paper is to present possible using of monitoring systems associated with photovoltaic systems (PV) in point of its integration with electrical power system (EPS). Presented investigations is a case study of 15 kW Scientific Photovoltaic System. The paper contains a description of applied control and monitoring systems including monitoring of PV panels parameters, weather condition, PV DC/AC inverters as well as special monitoring systems dedicated to power quality (PQ) and shape of voltage and current. The aim of the paper is to exhibit a possibility to combine different monitoring systems of the PV in order to improve evaluation of integration of PV with EPS. Presented example contains selected elements of power quality assessment, power and energy production, weather conditions for selected period of PV system working time.
关键词： electrical network parameters,distributed energy resources,photovoltaic,monitoring systems,power quality
更新于2025-09-16 10:30:52
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[IEEE 2019 8th International Conference on Systems and Control (ICSC) - Marrakesh, Morocco (2019.10.23-2019.10.25)] 2019 8th International Conference on Systems and Control (ICSC) - Performance Evaluation of Neural Network Controlled Grid-Connected Photovoltaic System for Power Quality Enhancement
摘要： This paper studies a neural network (NN) control for three-phase grid-connected Photovoltaic (PV) system. This study aims to improve the performances of the system, ensure a high quality of the Total Harmonic Distorsion and extract the maximum power while ensuring unity power factor. A neural network controller is used instead of the two PI regulation loop for grid currents. The Levenberg Marquardt (LM) algorithm is used to train the NN controller and the validation and training data of the utilized neural controller are obtained by simulation of the entire system with the PI controllers calculated for variation of solar irradiance. The simulation study shows that the neural controller indicates significantly more enhanced performance than that of the PI controller, including faster response times, lower overshoot and Total Harmonic Distortion (THD).
关键词： Neural Network Control,Levenberg Marquardt Algorithm,Photovoltaic System,Total Harmonic Distortion,Power Quality
更新于2025-09-16 10:30:52