- 标题
- 摘要
- 关键词
- 实验方案
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Fast and Robust Maximum Power Point Tracking for Solar Photovoltaic Systems
摘要： Solar Photovoltaic (PV) energy is becoming an increasingly important part of the world's renewable energy. In order to develop technology for efficient energy conversion from a solar PV system, this paper studies typical Maximum Power Point Tracking (MPPT) control techniques used in solar PV industry and then proposes a close-loop and adaptive MPPT method for reliable and rapid extraction of solar PV power. The paper emphasizes especially on how the proposed and conventional adaptive MPPT methods perform under highly variable weather and solar irradiation conditions in a digital control environment. A computer simulation system is developed by using SimPowerSystems and Opal-RT real-time simulation technology which allows for fast and efficient investigations of the MPPT algorithms under high switching frequency conditions for power converters. A hardware experiment system is built to validate and compare the proposed and conventional MPPT techniques in a more practical condition. Advantages, disadvantages and properties of different MPPT methods are compared and studied, evaluated.
关键词： Solar PV Array,Digital Control,Maximum Power Point Tracking,Computational and Hardware-Based Experiments
更新于2025-09-16 10:30:52
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[IEEE 2019 IEEE International Conference on Intelligent Techniques in Control, Optimization and Signal Processing (INCOS) - Tamilnadu, India (2019.4.11-2019.4.13)] 2019 IEEE International Conference on Intelligent Techniques in Control, Optimization and Signal Processing (INCOS) - Hardware and Software Co-emulation Technique based Solar Photovoltaic Sources Emulator
摘要： Photo-Voltaic (PV) Emulator plays a key role in performance evaluation of the PV based energy conversion systems, which is challenging and time-consuming task under varying environmental conditions. This paper presents a hardware and software co-emulation technique based Solar Photo-Voltaic Module Emulator (SPVME) to emulate solar PV Sources. The mathematical model of solar PV module developed in Multisim works as a reference to emulate the solar PV module characteristics. A Programmable DC power supply is employed to replicate the emulated PV module characteristics behavior. LabVIEW software is used to integrate the solar PV module developed in Multisim with the programmable DC power supply. The proposed SPVME system can be used for performance analysis of PV sources like PV module, string and array. The prototype of the proposed SPVME is analyzed with 60 W PV module under varying irradiation and the output result exhibits the accuracy of the developed SPVME prototype.
关键词： Hardware and Software Co-emulation,Performance Evaluation,Single Diode Solar PV cell model,Solar Photovoltaic Module Emulator (SPVME)
更新于2025-09-16 10:30:52
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[IEEE 2019 IEEE Energy Conversion Congress and Exposition (ECCE) - Baltimore, MD, USA (2019.9.29-2019.10.3)] 2019 IEEE Energy Conversion Congress and Exposition (ECCE) - Design and Implementation of Switch-mode Solar Photovoltaic Emulator using Power-Hardware-in-the-loop Simulations for Grid Integration Studies
摘要： This paper presents a photovoltaic (PV) emulator based on Power Hardware in the Loop Simulation (PHILS). Use of PHILS for source emulation is getting popular in the modern day due to its advantage in recreating an actual like testing environment. However, selection of proper power interface is crucial to achieve a stable PHILS. This paper utilizes an advanced control algorithm to extend the bandwidth of a switched mode buck-based power amplifier (PA). This allows PA in the interface to minimize the latencies thereby helping in the stability of the PHILS. The PV model inside the real time simulator is used to generate the PV characteristics as required. This allows user to have better flexibility as compared to conventional standalone PV emulator in a test setup for grid integration studies. A 260 W buck converter prototype is designed and implemented to realize the power amplification stage. The PV array model is simulated in real time digital simulator (RTDS). A comparative experimental evaluation is conducted between the real time PV array simulation and PHIL based PV emulator to validate its performance.
关键词： real time simulation,Solar PV emulator,PV simulator,power hardware in the loop
更新于2025-09-12 10:27:22
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[IEEE 2019 21st European Conference on Power Electronics and Applications (EPE '19 ECCE Europe) - Genova, Italy (2019.9.3-2019.9.5)] 2019 21st European Conference on Power Electronics and Applications (EPE '19 ECCE Europe) - A Single-Phase dc-ac Dual-Active-Bridge Based Resonant Converter For Grid-Connected Photovoltaic (PV) Applications
摘要： This paper presents the topology, modelling and control strategy for a single-phase grid-connected converter for photovoltaic (PV) applications based on the series-resonant dual active bridge (DAB). A state-space large-signal model is derived for phase-shift based modulations, and a linearized model is presented for control design. A multi-loop control strategy is presented where a current-control loop regulates the current that the converter injects in-phase with the grid voltage, while a slower loop regulates the PV array voltage for MPPT. To verify the model and control strategy, simulation and experimental results are presented.
关键词： Power Converter,ZVS converters,Photovoltaic,Hardware,Converter circuit,DC-AC,Converter control,Microinverter,Modelling,High frequency power converter,Dual active bridge,Resonant converter
更新于2025-09-12 10:27:22
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Hardware Approach to Mitigate the Effects of Module Mismatch in a Grid-connected Photovoltaic System: A Review
摘要： This study reviews the hardware approach to mitigate the e?ects of module mismatch in a grid-connected photovoltaic (PV) system. Unlike software solutions, i.e. the maximum power tracking algorithm, hardware techniques are well suited to enhance energy yield because of their inherent ability to extract energy from the mismatched module. Despite the extra cost of the additional circuitry, hardware techniques have recently gained popularity because of their long-term ?nancial bene?ts. Notwithstanding the growing interest in this topic, review papers that provide updates on the technological developments of the three main hardware solutions, namely micro inverter, DC power optimizer, and energy recovery circuits, are lacking. This is in contrast to software solutions, which have had a considerable number of reputable reviews. Thus, a comprehensive review paper is appropriate at this juncture to provide up-to-date information on the latest topologies, highlight their merits/drawbacks, and evaluate their comparative performance.
关键词： micro inverter,hardware solutions,maximum power point tracker,photovoltaic,DC power optimizer,energy recovery,partial shading,module mismatch
更新于2025-09-12 10:27:22
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Microcavity characteristics analysis of micro-shuttered organic light-emitting diodes
摘要： We propose a designing of multi-layer neural networks using 2D NAND flash memory cell as a high-density and reliable synaptic device. Our operation scheme eliminates the waste of NAND flash cells and allows analogue input values. A 3-layer perceptron network with 40,545 synapses is trained on a MNIST database set using an adaptive weight update method for hardware-based multi-layer neural networks. The conductance response of NAND flash cells is measured and it is shown that the unidirectional conductance response is suitable for implementing multi-layer neural networks using NAND flash memory cells as synaptic devices. Using an online-learning, we obtained higher learning accuracy with NAND synaptic devices compared to that with a memristor-based synapse regardless of weight update methods. Using an adaptive weight update method based on a unidirectional conductance response, we obtained a 94.19% learning accuracy with NAND synaptic devices. This accuracy is comparable to 94.69% obtained by synapses based on the ideal perfect linear device. Therefore, NAND flash memory which is mature technology and has great advantage in cell density can be a promising synaptic device for implementing high-density multi-layer neural networks.
关键词： synaptic device,multi-layer neural networks,hardware-based neural network,deep neural networks (DNNs),deep learning,NAND flash memory,neuromorphic
更新于2025-09-11 14:15:04
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[IEEE 2019 IEEE/ASME International Conference on Advanced Intelligent Mechatronics (AIM) - Hong Kong, China (2019.7.8-2019.7.12)] 2019 IEEE/ASME International Conference on Advanced Intelligent Mechatronics (AIM) - Hardware-in-the-Loop-Simulation of the light distribution of automotive Matrix-LED-Headlights*
摘要： This contribution proposes a novel Hardware-in-the-Loop (HiL)-simulation of the light distribution of matrix-headlights to reduce the duration and number of real night test drives. After calibration machine vision cameras measure and digitize the light distribution of the real matrix-headlight in the lab. The calibration process compares the light distribution measured by the camera with the absolute intensity-data from a goniophotometer. Minimizing the error determines the optimal transformation parameters. A virtual testing simulation visualizes the digitized light distribution under consideration of the actual driving dynamics. The HiL-simulation generates the control data for the real headlight. The evaluation of the approach uses a real matrix-headlight with 84 pixels and its measured intensity distribution as the reference. The system is real-time capable and the light distribution in the simulation matches the original headlight in intensity and color.
关键词： light distribution,matrix-headlights,simulation,Hardware-in-the-Loop,real-time
更新于2025-09-11 14:15:04
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Optimierter Laserspeckle-basierter Rauheitsmessprozess für bewegte, spiegelnde Oberfl?chen
摘要： This article describes the upcoming development of a parametric-optical laser measurement system for characterization of surfaces inline some production process. The measurement system is based on previously known approaches for characterization of specular surfaces using coherent light and auto-correlation on the resulting speckle intensity distribution. In order to apply these methods inline, a significantly increased measurement rate has to be reached, compared to existing solutions. This shall be achieved by modifications of the measurement process, use of hardware acceleration for image capturing and processing, and optimization of the processing algorithms.
关键词： speckle,Surface,hardware acceleration,FPGA,scattered light,roughness,laser,metrology
更新于2025-09-11 14:15:04
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[IEEE IGARSS 2018 - 2018 IEEE International Geoscience and Remote Sensing Symposium - Valencia, Spain (2018.7.22-2018.7.27)] IGARSS 2018 - 2018 IEEE International Geoscience and Remote Sensing Symposium - Scaling Support Vector Machines Towards Exascale Computing for Classification of Large-Scale High-Resolution Remote Sensing Images
摘要： Progress in sensor technology leads to an ever-increasing amount of remote sensing data which needs to be classified in order to extract information. This big amount of data requires parallel processing by running parallel implementations of classification algorithms, such as Support Vector Machines (SVMs), on High-Performance Computing (HPC) clusters. Tomorrow’s supercomputers will be able to provide exascale computing performance by using specialised hardware accelerators. However, existing software processing chains need to be adapted to make use of the best fitting accelerators. To address this problem, a mapping of an SVM remote sensing classification chain to the Dynamical Exascale Entry Platform (DEEP), a European pre-exascale platform, is presented. It will allow to scale SVM-based classifications onto tomorrow’s hardware towards exascale performance.
关键词： Exascale Computing,High-Performance Computing (HPC),Hardware Accelerators,Remote Sensing,Support Vector Machines (SVMs)
更新于2025-09-10 09:29:36
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Hardware implementation of optical switching node for data center networks
摘要： In high performance data center networks, switching the data from source node to destination node needs a proper signal processing to decode the address bits and switch the data and to avoid contention. In this article, we propose the hardware design for switching the data from one node to other bi-directionally. The design is verified in an experimental test bed.
关键词： hardware implementation,data center networks,optical switching
更新于2025-09-10 09:29:36