pv inverter

A fault takes place in a network, especially asymmetric fault, lead to the grid current imbalanced and DC side voltage instability, and feed into the grid power causing oscillation, even burned PV inverter, influence safe operation of grid-connected PV system and the grid.

电网发生故障，尤其是出现不对称故障时，会导致并网电流的不平衡和直流侧电压不稳定，造成馈入电网的功率发生振荡，甚至危及逆变器，影响光伏并网发电系统和电网的安全运行。

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The efficiency of the three-phase PV inverter with two-level boost converter is discussed in detail. The impact on the efficiency is analyzed as the DC-link voltage and the interleaved multiplicity change. The simulation results are given to verify it.

重点分析了带两电平boost变换器的三相光伏逆变器的效率问题，讨论了直流母线和交错并联重数变化对效率产生的影响，最后给出了仿真验证。

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The Study and Realization of Small-Scale Wind/ PV Hybrid Inverter Control Method

小型风光互补逆变器控制方法的研究与实现

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The experimental results demonstrate the performance of the active clamp flyback-type PV grid-connected inverter.

实验结果验证了有源钳位反激式光伏并网逆变器的可行性。

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So the PV inverter needs to track the maximum power point of solar panel at any moment.

因此光伏逆变器需要能够实时跟踪光伏电池的最大功率点。

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The main work about this thesis contains two parts discussed as below: Firstly, three control strategies of PV inverter are analyzed in detail is based on the theory of photovoltaic inverter.

本论文围绕这两个部分展开了研究，主要做了以下工作：首先，以光伏逆变器的理论为基础，详细分析光伏逆变器的三种控制策略。

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Leakage current analysis of a singlephase transformerless PV inverter connected to the grid

无变压器结构光伏并网系统共模漏电流分析

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Grid-connected PV inverter is a key component of the grid-connected photovoltaic power generation system. The efficiency of photovoltaic grid-connected inverter system is an important indicator measuring the power generation system.

大功率光伏逆变器是光伏电站系统的重要组成部件，其效率是衡量并网发电系统的重要指标之一。

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In the paper, firstly through theoretical analysis of Boost circuit, full-bridge inverter circuit and SPWM control technology used in the design of the system, design all parameters of the PV inverter main circuit.

首先对系统中Boost电路、全桥逆变电路及SPWM控制技术进行理论分析，设计了逆变器主电路的各个参数。

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Research on Grid-Connected PV Inverter Based on Repetitive Control

基于重复控制算法的光伏并网逆变器的研究

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So the third control method is suggested, which performs the stability of the DC voltage and power factor regulator. And the third control strategy of the PV inverter is designed in detail in this thesis.

这种控制策略同样可以实现母线电压稳定和功率调度等功能，最后对光伏逆变器的第三种控制模型进行详细的设计。

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A novel Boost AC module PV inverter is proposed in this paper. The hardware system is based on DSP and IPM which has good performance.

本文研究了一种新型Boost AC模块式光伏逆变器，并以DSP和IPM为核心设计了硬件系统，具有优良的性能。

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Thirdly, the mathematical model of the three-phase single stage grid-connected PV inverter were established in the three-phase stationary frame and two phase synchronization coordinate separately. The paper mainly analyzed double closed-loop control strategy based on synchronous frame control technology.

然后建立了三相单级光伏并网逆变器在三相静止坐标系和两相旋转坐标系下的数学模型，重点分析了基于同步坐标系直接电流控制技术的双环控制策略。

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Micro PV inverter module can Plug and Play, so it can be widely used in various small and medium power Photovoltaic power generation fields.

微型光伏逆变器模块即插即用，可以广泛应用于各种中小功率光伏发电领域。

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Micro PV inverter has the characteristics of low input voltage, high output voltage and low power level, and therefore it proposed the design requirements of high power density, high efficiency, high reliability and low cost.

微型光伏逆变器具有输入电压低、输出电压高和功率等级低等特点，因而对其提出了功率密度高、转换效率高、可靠性高和成本低等设计要求。

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Using this testing platform, we tested the related parameters of the griding reactor, this will be a foundation for the optimization of reactor design and testing of other performance parameters of the PV inverter.

利用该测试平台，对光伏并网电抗器相关参数进行了全面准确的测量，为电抗器的优化设计和逆变器其它性能参数的测试打下了基础。

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Design of the Waterproof and Airflow Channel for Outdoor PV Inverter

小功率户外型光伏并网逆变器的防水及风道设计

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The validity and feasibility in hardware design and control algorithm of PV inverter power supply was verified by experimental results.

实验结果验证了光伏发电逆变电源硬件设计与控制算法的正确性和可行性。

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Lastly, the mathematical model of the PV inverter is established under asymmetric grid fault. Power flow of PV inverter, and the mechanism of voltage fluctuation in DC bus is analyzed.

最后，建立了电网不对称故障下光伏逆变器的数学模型；分析了光伏并网逆变器的功率流、直流侧电压波动机理，网侧负序分量对光伏逆变器输出并网电流的影响。

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The fundamentals and key techniques of bi-branch solar PV grid-connected inverter with maximum power point tracking were presented.

阐述了具有双支路光伏最大功率跟踪功能的并网型逆变器的基本原理和关键技术。

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Development of a Low-power Grid-connected PV Inverter System

小功率光伏并网逆变系统的研制

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This paper presented analysis and study on topology and control of DC-AC link of PV inverter, which can operate independently and grid-connected. Finally, the experimental prototype was implemented.

本文针对可独立运行和并网运行的光伏发电逆变电源，分析了其DC-AC部分的拓扑结构，设计了相应的控制方法，并最终完成了试验样机。

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This paper presents a PV grid-connected inverter system based on repetitive control.

本文介绍了一种基于重复控制算法的光伏并网逆变器系统。

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In this paper, the principle of these technologys were analysised, and some conventional approachs were introduced. Combined with the characteristics of moderate and small power PV inverter, the design solution was given.

本文对此进行了原理性说明，并详细介绍了当前的一些设计方法，同时结合中小功率光伏并网逆变器的特点给出了设计方案和优化思路。

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Grid-Connected PV Inverter with Zero-current-Switching

具有零电流关断特性的并网型光伏逆变器研制

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Under this background, the dissertation deeply researches the PV grid-connected inverter.

本论文就是在此背景下，对太阳能并网发电系统中的核心器件并网逆变器进行了较为深入的研究，具有重要的现实意义。

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And the water cooling research result can be utilized in many other power supply fields, such as high power PV grid inverter, and so on.

同时，本项目的水冷却技术应用成果可以推广到其他电源行业，诸如大功率光伏并网电源产品等等。

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Validation through prototype testing, test results showed that the three-phase locked loop has achieved the synchronization requirements of the PV inverter system and gained a unit power factor for the inverter. Finally, this article used Verilog language to complete the design of FPGA-based three phase-locked loop.

通过样机试验验证，试验结果表明，本文所设计的三相锁相环达到了光伏逆变系统的同步性能要求，实现了逆变器的单位功率因数运行。

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These advancements will radically change the PV inverter market over the next five years, the report notes.

这些进步将从根本上改变未来五年光伏逆变器市场，该报告指出。

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This thesis suggests three pattern of connect with grid. If island phenomenon occurs, the electrical parameters of load will change. A three-phase PV inverter islanding detection simulation model is established to detect and control the island phenomenon.

论文对光伏三相逆变的孤岛现象进行了分析，讨论了三种孤岛后的并网模式，利用孤岛现象发生时负载上电气量的变化建立光伏三相逆变器的孤岛检测模型，对孤岛进行控制。

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