Description: 逆变电源，光伏并网发电系统，基于AT89s52和stc52-Inverter power supply, grid-connected PV systems, based on AT89s52 and stc52 Platform: |
Size: 110592 |
Author: |
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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 ever-increasing reliance on electronic devices which utilize AC power highlights the problems associated with the unexpected loss of power from the electrical grid. In places where the electrical infrastructure is not well-developed, brown-outs can prove fatal when electronic medical instruments become unusable. Therefore, there is a need for inexpensive and reliable pure-sine wave inverters for use with medical devices in the underdeveloped world. This report documents the development of one component of an uninterruptible power supply, the DC-to-AC inverter. Through the use of analog signal processing techniques, a prototype which efficiently and accurately emulates the pure-sine wave power present on the power grid was created. The three-level PWM system within this report is created with the possibility of a feedback-regulated system to be implemented in the future. Platform: |
Size: 3406848 |
Author:Dries |
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Description: 在风力发电网侧逆变器动态数学模型基础上 采用空间矢量脉冲宽度调制 SVPWM 方式和电网电压合成矢量定向 实现了电流有功分量和无功分量的解耦及功率因数的可调控制.-Dynamic mathematical model based on wind power grid-side inverter the resultant vector of the vector mode and the grid voltage space vector pulse width modulation directed to achieve a decoupling of the current active component and reactive component and power factor adjustable control. Platform: |
Size: 327680 |
Author:hh |
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Description: 基于正反馈频率漂移的光伏并网逆变器反孤岛控制。一个比较好的参考资料-Based on positive feedback frequency drift of photovoltaic grid inverter control against the island. A better reference material
Platform: |
Size: 401408 |
Author:洪依 |
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Description: 分析了电压型控制模式下的逆变器并网的电路结构和数学模型，提出了基于重复控制技术的光伏逆变器并网控制策略，仿真和实验结果表明方案满足逆变器并网要求。-Voltage control mode inverter grid circuit structure and mathematical model is proposed based on repetitive control technology photovoltaic inverter grid control strategy, simulation and experimental results show that the program inverter to meet and network requirements. Platform: |
Size: 209920 |
Author:chenchen |
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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: 储能电池在电网备用中的matlab图解 清晰展示了电池如何控制及如何与电网连接-battery is connected to grid through 3-phase inverter. PI based controller is developed for control of inverter according to Line to Line voltage of grid. and load is connected in between grid and battery. 100Km length of transmission is considered here. Platform: |
Size: 19456 |
Author:徐扬坤 |
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Description: 一种基于锁相环控制的三相并网逆变器控制系统仿真。-A three-phase grid inverter control based on hysteresis control system simulation. Platform: |
Size: 14336 |
Author:zhangxiurong |
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Description: In this paper it is presented a detailed description
of the analog implementation of the control for a DC-AC
converter composed by a DC-DC Zeta converter and a low
frequency inverter. Using only analog components, it was
developed the MPPT technique based on linearization of solar
panel characteristic around the MPP, a feedforward control and
a robust PWM sine wave modulator. This simple and low cost
solution was designed to be used in grid connected rooftop
photovoltaic panels (PV). In scenery where an entire city area
could be used to generate extra power, reducing the necessity of
huge central power plants, module integrated inverters will play
an important role on grid connection of PV systems with high
reliability due to the high level of redundancy. The experimental
results show that this simple cost effective solution is able to
extract maximum power PVs with low current harmonic
content-In this paper it is presented a detailed description
of the analog implementation of the control for a DC-AC
converter composed by a DC-DC Zeta converter and a low
frequency inverter. Using only analog components, it was
developed the MPPT technique based on linearization of solar
panel characteristic around the MPP, a feedforward control and
a robust PWM sine wave modulator. This simple and low cost
solution was designed to be used in grid connected rooftop
photovoltaic panels (PV). In scenery where an entire city area
could be used to generate extra power, reducing the necessity of
huge central power plants, module integrated inverters will play
an important role on grid connection of PV systems with high
reliability due to the high level of redundancy. The experimental
results show that this simple cost effective solution is able to
extract maximum power PVs with low current harmonic
content Platform: |
Size: 805888 |
Author:Roshan |
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Description: 这是一个单相离网逆变器双闭环控制，基于dq坐标系下采用电压外环和电流内环的方法对其进行稳定性控制。-This is a single-phase off-grid inverter double closed-loop control, based on the dq coordinate system using the voltage outside the ring and the current inner ring method for its stability control. Platform: |
Size: 15360 |
Author:江法洋 |
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Description: 这是一个三相离网逆变器双闭环控制，基于dq坐标系下采用电压外环和电流内环的方法对其进行稳定性控制。-This is a three-phase off-grid inverter double closed-loop control, based on the dq coordinate system using the voltage outside the ring and the current inner ring method for its stability control. Platform: |
Size: 29696 |
Author:江法洋 |
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Description: 本程序为三相三线制20kw光伏并网逆变器程序，可实现光伏电池最大功率点跟踪，并网功率因数0.99以上-This procedure for the three-phase three-wire 20kw photovoltaic grid-connected inverter program, can achieve the maximum power point tracking photovoltaic cells, and network power factor of 0.99 or more Platform: |
Size: 394240 |
Author:潘建 |
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Description: 本系统由SPWM信号的产生、逆变回路及其控制、欠压过流保护、键盘和显示等部分组成。选择DSP TMS320F28027芯片产生SPWM信号；逆变器主回路是由功率场效应晶体管构成的全桥逆变电路，其控制部分采用基于DSP控制的最大功率跟踪和输出电流跟踪控制策略，使逆变输出电流与参考信号同频同相；并从软硬件两方面进行输入欠压、输出过流保护，增强系统的稳定性和可靠性。对系统的转换效率、畸变率等各项指标的测试结果表明，本光伏并网模拟装置是比较稳定可靠的。(The system consists of SPWM signal generation, inverter circuit and its control, undervoltage over-current protection, keyboard and display and other parts. DSP TMS320F28027 chip select SPWM signal is generated; the inverter main circuit is full bridge inverter circuit is composed of power field effect transistor, the control part adopts DSP to control the maximum power tracking and output current tracking control strategy based on the inverter output current reference signal with the same frequency and phase; and the input voltage, output over-current protection from two aspects of hardware and software, to enhance the stability and reliability of the system. The test results of the system conversion efficiency, distortion rate and other indicators show that the photovoltaic grid connected simulation device is relatively stable and reliable.) Platform: |
Size: 23951360 |
Author:destyni
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Description: The clean energy future that would lie ahead for the world is solar energy. The use of solar energy, principally PV, for different applications, and mainly grid connected, is well suited to most of the rural areas due to the lack of electrification. In this paper we proposed a strategy for optimizing the performance of a grid-connected photovoltaic power system. For this, we opted for an MPPT control method based on the fuzzy logic controlled. The control and improving of the performance of a voltage source inverter for grid connected photovoltaic (PV) systems, we proposed to use a modern technique which is called Direct Power Control. Simulations of the proposed approach give interesting results compared to the existing control strategies in this field. The model of the proposed system is simulated by MATLAB / Simulink Platform: |
Size: 746496 |
Author:sbr energie
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