| 基于Simulink的改进型MPPT控制算法仿真研究 |
投稿时间：2018-04-04 修订日期：2018-04-09  点此下载全文 |
| 引用本文： |
| 摘要点击次数: 94 |
| 全文下载次数: 0 |
|
| 基金项目:汕头职业技术学院“创新强校工程”项目(STP-ZZ-017) |
|
| 中文摘要:大规模风电接入电网后,电力系统将会出现一些新的问题,低频强迫振荡便是其中之一。为保证含风电场的电网安全稳定运行,对强迫振荡的分析与控制显得尤为重要。本文基于标幺值体系建立了7阶双馈风机模型。推出含风电的单机无穷大系统全风况下的小信号线性化数学模型,计算特征根和参与因子,分析出系统存在高低两种频率的强迫振荡模态,分别由轴系和桨距角控制系统引起。本文提出了一种改进型的最大功率点追踪策略(MPPT)。基于Matlab/Simulink详细仿真模型,验证了理论的正确性与适用性,为日后低频强迫振荡的预防与控制提供了理论基础。 |
| 中文关键词:风力发电 最大功率点追踪 Simulink 7阶双馈风机模型 标幺值体系 全风况下特征方程 |
| |
| Simulation Study of Improved MPPT Control Algorithm based on Simulink |
|
|
| Abstract:Due to a large number of wind generators integrated to power systems, some new problems for the grid such as the forced low frequency oscillation (LFO) may occur. In order to ensure the safety and stability of Wind-Integrated Power Systems, Analysis and control of the LFO is particularly important. Based on the per-unit value system, this paper established a 7-order model DFIG and analyzed the small signal linear mathematical model of One Machine Infinity Bus (OMIB) containing wind farms under various wind speed, calculated the characteristic root and participation factor, concluded that there are two forced low oscillation modes separately of high and low frequency in the system which are caused by shaft system and pitch angle control system respectively.What"s more, this paper put forwar an improved MPPT strategy. Based on discrete model simulation, the validity of the conclusion is verified, which can provide basic theoretical analysis of forced LFO for future measures of prevention and control. |
| keywords:Wind power generation MPPT Simulink 7-order doubly fed fan model index system characteristic equation under full wind condition |
| 查看全文 查看/发表评论 下载pdf阅读器 |
位访问者,今日访问
