Description: 2009年全国大学生电子设计大赛A题：光伏并网发电模拟装置 ，实现对光伏并网发电模拟装置的原理和结构进行参数的计算与分析，设计并制作了一个设计并制作一个光伏并网发电模拟装置。本系统以ARM7 LM1138为处理核心能实现了用直流稳压电源和电阻模拟光伏电池，经过SPWM和H桥的DC/AC转换，滤波整流成正弦波后再经变压器逆变从而实现模拟并网，系统具有频率、相位采集跟踪功能和电压电流采集功能。-2009 National Undergraduate Electronic Design Contest A question: grid-connected PV simulator achieve grid-connected PV simulation device parameters of the principles and structure calculation and analysis, design and production of a design and production of a photovoltaic grid simulator. The system ARM7 LM1138 as the processing core can be achieved using DC power supply and resistor simulation photovoltaic cells, after SPWM and the H bridge DC/AC conversion, filtering through the transformer and then rectified into a sine wave inverter in order to achieve simulation of grid , the system has a frequency, phase acquisition and tracking function of voltage and current collection. Platform: |
Size: 1049600 |
Author:肖鸽 |
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Description: The PV array has been simulated at one year period and other code sources are
been discussed. In order to extract the voltage deviation from the array, we intent to
apply the formula of the MPP to these codes. Our approach, considering the hole
system, has not been totally implemented in Simulink. The grid utility and the control Platform: |
Size: 393216 |
Author:mimo |
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Description: At this moment, the major
obstacle of wide PV system commercialization is the
high initial investment cost that stems from the strict
grid connection standards and high expectations from
the PV system [2], [3]. The grid-connected PV system
consists of two parts: PV arrays that convert irradiation
to electrical energy, and the converter that feeds the
energy into the grid. Platform: |
Size: 1024 |
Author:mimo |
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Description: 08年到11年的光伏并网逆变的ieee文献以及光伏的仿真-grid-connected pv system papers of ieee from 2008 to 2011 and some simulations Platform: |
Size: 24601600 |
Author:宫本 |
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Description: This document is a research paper that presents a study and design of a complete grid connected photovoltaic (PV) system for providing the electrical loads in an emergency health clinic according to their energy requirements. Platform: |
Size: 203776 |
Author:Amal |
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Description: 太阳能光伏阵列在光照强度不均匀或者处于部分遮阴情形时，它的功率一电压输出特性曲线将出现多峰现象，这种情况下如果继续采用传统的最大功率跟踪法会造成光伏阵列输出功率的降低，从而导致光伏发电系统的效率的降低。
本文首先介绍了光伏并网发电的研究背景和意义，分析了国内外的现状和光伏并网发电关键问题的现状，接着对光伏电池的工作原理、等效模型和输出特性三方面进行了作了全面的分析 在此基础上，深入研究了热斑效应和部分遮阴条件下光伏电池不同的表现性能 然后，本文详细介绍了常用的最大功率跟踪方法的原理、优缺点和适用的场合及存在的一些问题，同时提出了一种适用于部分遮阴条件下的基于电导增量法的全局搜索算法。基于以上研究，本文又设计了实现最大功率跟踪控制的硬件电路，其中包括Boost电路和DSP的外围控制电路。
- It is widespread that there is uneven light intensity, partial shading and other phenomena in various photovoltaic (PV) power generation systems, this phenomenon will not only affect the power output of the PV arrays, but also will cause problems with the safety and stability. The P-U characteristics of PV array will appear multi-peaks in the partial shade condition, making the conventional maximum power point tracking(MPPT) algorithm fail to apply in this case.
Firstly, the paper introduces the grid-connected PV system research background and significance, the current situation at home and abroad, key issues of grid-connected PVsystem, it also analyzes the electrical characteristics and equivalent model of PV cell, it also analyses the hot spot effect and the difference performance of PV cell in partial shading then, the paper introduces the principle of the conventional maximum power point tracking methods, its advantages and disadvantages, applicable occasions and problems Platform: |
Size: 11656192 |
Author:dingxiaolin |
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Description: This paper
presents a PSCAD/EMTDC model of PV solar panels, the grid
connected three phase voltage sourced inverter (VSI) and its
controller system. The VSI control is implemented with current
control loops. A maximum power point tracking (MPPT)
algorithm is implemented to get the maximum output power for
any given solar irradiation and temperature. This is integrated
with the inverter control in such a way that the requirement of
DC-DC converter is eliminated to harvest the maximum power.
The inverter model also maintains near unity power factor
regardless of the level of power output and maintains an
acceptable level of current harmonics. Finally, the developed
model is validated with the output of a commercially used PV
module. Platform: |
Size: 355328 |
Author:起个名字真难 |
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Description: 单相光伏并网发电系统电压前馈控制和有源频率偏移（AFD）孤岛检测法的simulink仿真模型，初步实现了并网电流与电网电压的同频同相，AFD孤岛检测方法采用S函数给出，检测功能基本实现。-Single-phase grid-connected PV system voltage feedforward control and active frequency offset (AFD) simulink simulation model islanding detection method, the initial realization of grid current and the grid voltage of the same frequency and phase, AFD islanding detection method using the S function to out detection realized. Platform: |
Size: 13312 |
Author:Mr. ZENG |
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Description: high-capacity three-phase four-wire grid-connected PV system based on Boost converter and dual-level four-leg inverter is proposed Platform: |
Size: 176128 |
Author:Fethi |
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Description: “Grid Connected
PV Systems with Smart grid functionality”. It solves the problem of shading to the available
NTNU PV modules which is sensitive to the exiting central inverter system topology by
proposing a PV system which is more efficient and reliable. This thesis is focused on the
design of the PV-grid connected inverter power stage that supports the proposed PV system
under study. As part of the NTNU renewable energy laboratory project, a single phase 1kW,
230V, dual power stage inverter is designed. The important parameters required for inverter
stage including input inductance and capacitance, DC –Link capacitance and LCL filter were
designed. Platform: |
Size: 1492992 |
Author:roshan |
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Description: the grid-connected PV system regarding
with the complex nature of thin-fi lm PV technology behaviours. Platform: |
Size: 3072 |
Author:sofiane biji |
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Description: This code presents a single-phase, single-stage
current source inverter (CSI) based photovoltaic system (PV)
for grid connection. A double-tuned parallel resonant circuit is
designed to attenuate the second- and fourth- order harmonics
at the inverter dc side. It helps to improve the power quality and
system efficiency. A modified carrier based modulation
technique for the current source inverter is studied to magnetize
the dc-link inductor and to control the switching pattern for the
single phase grid-connected CSI. The operation of Single Phase
Transformer-less grid connected PV system is verified by the
simulation using MATLAB/Simulink software. The results are
analyzed and presented. Platform: |
Size: 54763 |
Author:haleemforyou |
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