Matlab风力发电系统的最大风能追踪控制研究
时间:2018-05-05 21:39 来源:毕业论文 作者:毕业论文 点击:次
| 摘要风能在自然界分布广泛，且清洁无污染，储量十分巨大，在当今化石能源日渐枯竭的环境下，提高对风能的利用率不仅可以缓解人类能源危机，而且有助于缓解常规能源开发利用带来的环境污染问题。本文介绍了如何利用叶尖速比法实现风力发电系统对最大风能的追踪。 本文通过了解风力机的结构组成和原理，发现通过对风力机叶尖速比的控制可以实现风力机对最大风能的跟踪，在此基础上，经过对几种常见最大功率跟踪算法原理的分析，基于最佳叶尖速比控制简单明确易于控制的特点，确定以此方法来实现风力发电系统最大风能追踪的研究。 其次，在对永磁直驱式发电机结构与原理的研究分析基础上，建立了包括风速模型、风力机模型和发电机模型的数学模型，并得出在d-q坐标下可以通过对发电机q轴电流的控制来实现对风机转速的控制方法， 可以使风力机始终工作在最佳叶尖速比状态。22281 最后使用Matlab / Simulink进行实验仿真，建立了风力发电系统的仿真模型，实现通过最佳叶尖速比控制算法完成风力发电系统的最大风能追踪仿真，并对结果进行分析。 关键词：风力发电系统；最大风能跟踪；最佳叶尖速比；直驱永磁同步风力发电机；SVPWM控制 Title The maximum wind energy tracking control of wind power generation system Abstract Wind energy is widely distributed in nature ， it is clean and pollution-free ， and huge reserves ， In today's fossil energy is depleting,Improve the utilization of wind energy can not only alleviate the energy crisis of humanity，But also help ease the conventional energy development and utilization ， and environmental pollution problems caused.This article describes how to use the tip speed ratio method to achieve wind power generation system maximum wind energy tracking. In this paper， by understanding the structure and principle of wind turbine， found through control of the wind turbine blade tip speed ratio wind machine can achieve the maximum wind power tracking， on this basis， through analysis of several common principles of maximum power tracking algorithm，based on the optimal tip speed ratio control simple clear easy to control，the characteristics of this method to implement the wind power generation system research of maximum wind power tracking Through the design of wind power system and the simulation respectively，to achieve the maximum power tracking for wind power generation system. Secondly ， on the structure and principle of the permanent magnet direct-drive type generator based on the research analysis，including wind speed model is established，the model of wind turbine and generator model， the mathematical model was obtained through the generator based on d - q q axis current control to realize the speed of the fan control method， in order to realize the wind machine always work in the best state of tip speed ratio. Finally experiment using Matlab/Simulink simulation，wind power system simulation model was set up，implement best tip speed ratio control algorithm is completed by wind power system simulation，the maximum wind power tracking and the results are analyzed.Keywords: Wind power generation system the largest wind energy tracking the optimum tip-speed ratio Direct-drive Permanent Magnet Synchronous Generator control of SVPWM目次 1 绪论2 1.1 引言2 1.2 研究的目的和意义2 1.3 世界风力发电发展概况3 1.3.1 世界风力发电装机容量与现状3 1.3.2 风力发电机组的单机容量不断增大3 1.3.3 风力发电的经济性不断地提高3 1.4 我国风力发电发展概况4 (责任编辑：qin) |