电气工程及其自动化专业论文 风力发电并网控制的变流器研究设计

……………………. ………………. …………………山东农业大学 毕 业 论 文 风力发电并网控制的变流器研究设计院 部 机械与电子工程学院专业班级 电气工程及其自动化5班届 次 2015届学生姓名学 号指导教师 副教授二〇一五年六月五日装订线 ……………….……. …………. …………. ………目录摘要 (I)Abstract (II)1 引言 (1)1.1 课题背景及意义 (1)1.2 风力发电并网技术 (2)1.2.1 交流异步发电机形式 (2)1.2.2 交流同步发电机形式 (3)1.2.3 交流双馈发电机形式 (4)2 风电并网时对电网运行所产生的影响 (4)2.1 对电力电量平衡的影响 (5)2.2 对电网潮流的影响 (5)2.3 对电能质量的影响 (6)2.4 对电压及功率的影响 (6)3 风力发电变流器的发展概述 (7)3.1 变流器控制技术发展 (7)3.2 变流器散热技术发展 (7)3.3 风力发电变流器发展趋势 (7)4 风电变流器的基本原理和数学模型 (8)4.1 直驱式风电并网变流器拓扑结构分类 (8)4.2 直驱式风电并网变流器系统特点 (8)4.3 双馈式风力发电机基本原理 (8)4.4 双馈变流器的工作原理 (9)5 直驱式风电并网控制的变流器设计 (10)5.1 风电变流器系统的要求 (10)5.2 风电变流系统相关参数设计 (10)5.2.1 主电路的设计 (10)5.2.2 直流母线电压的选取 (11)5.2.3 机侧整流器电感的选取 (11)5.2.4 机侧整流器二极管的选取 (12)5.2.5 直流母线侧滤波电容的选取 (12)5.2.6 机侧整流器和网侧逆变器IGBT的选取 (13)5.2.7 输出滤波器的设计 (13)6 直驱式风电系统变流器仿真实验 (15)6.1 风电并网变流器系统的仿真实验 (15)6.2 仿真实验结果分析 (18)参考文献 (18)致谢 (20)ContentsAbstract (II)1 Introduction (1)1.1 Subject background and significance (1)1.2 Wind power grid connected technology (2)1.2.1 AC asynchronous generator form (2)1.2.2 AC synchronous generator form (3)1.2.3 AC doubly fed generator form (4)2 The influence of the wind power grid operation on the operation of the power network (4)2.1 The impact of power balance of power (5)2.2 Impact on power flow of power network (5)2.3 The influence of power quality (6)2.4 The influence of voltage and power (6)3 Development of wind power converter (7)3.1 Development of converter control technology (7)3.2 Development of converter cooling technology (7)3.3 Development trend of wind power converter (7)4 Basic principle and mathematical model of wind power converter (8)4.1 Topological structure classification of direct drive wind power grid connectedconverter (8)4.2 The characteristics of direct drive wind power grid connected convertersystem (8)4.3 Basic principle of doubly fed induction generator (8)4.4 Working principle of doubly fed converter (9)5 Converter design of direct drive wind power grid connected control (10)5.1 Requirements for wind power converter systems (10)5.2 Design of correlation parameters for wind power converter system (10)5.2.1 Design of main circuit (10)5.2.2 Selection of DC bus voltage (11)5.2.3 Selection of inductance of machine side rectifier (11)5.2.4 Selection of diode side rectifier diode (12)5.2.5 Selection of capacitor of DC bus side filter (12)5.2.6 Selection of IGBT for machine side rectifier and net side inverter (13)5.2.7 Design of output filter (13)6 Simulation experiment of the converter of direct drive wind power system (15)6.1 Simulation experiment of wind power grid converter system (15)6.2 Simulation results analysis (18)References (18)Acknowledgement (20)风力发电并网控制的变流器研究设计张磊（山东农业大学机械与电子工程学院泰安 271018）摘要：随着当今社会经济的发展，对电能的需求量日益增加，可再生新能源也越来越成为人们的“新宠儿”。

风能作为一种可再生重要的清洁新能源也渐渐引起人们的青睐和重视，已逐渐成为可再生能源的开发利用、国家面对能源危机的共同选择，经过近些年的飞速发展，已逐渐成为我国三大能源之一，风力发电技术也随之获得迅猛发展，并日臻成熟。

在风力发电技术领域，尤其是并网控制方面，变流器是系统并网最重要的部件之一，因此对它的研究显得更加重要。

本篇论文先简要介绍了可再生能源中风力发电的发展现状以及发展趋势，风力发电技术在发电过程中的分类构造类型，比较其优缺点。

紧接着，主要从电力电量、电网潮流、电能质量、电压及功率等四个方面说明在风电并网中，对系统大、小电网所形成的冲击影响[1]，介绍在风力发电中变流器的类型和部分发展趋势的探求。

本文主要介绍了直驱式风电变流器的基本原理和数学模型和双馈式风电变流器的基本原理和数学模型，并且更加侧重于直驱式风力发电在并网控制过程中的变流器设计。

为了获得并网系统的运行安全稳定性，在MATLAB仿真平台中搭建发电机侧整流器的风力发电并网变流器系统的仿真模型进行仿真实验。

仿真结果表明,本文设计的风电并网变流器以及控制策略具有科学性和合理性。

关键词：风力发电变流器并网控制直驱式风机Research and design of converter for grid connected controlof wind powerLei Zhang(Mechanical & Electrical Engineering College of Shandong Agricultural University, Tai’an,Shandong 271018)Abstract：With today's social and economic development, the increasing demand for electrical energy, renewable energy, also has become more and more people, "the new darling." Wind energy as a renewable important new clean energy has gradually attracted people's favor and attention, has gradually become the development and utilization of renewable energy, the country is faced with the common choice of the energy crisis, after the rapid development in recent years, has gradually become one of China's three major energy, wind power generation technology also followed the rapid development, and maturity.In the field of wind power generation technology, especially in grid control, the converter is the most important part of the grid connected system, so it is more important to study it.. This paper briefly introduces the development of renewable energy sources of wind power and the development trend of wind power generation technology in the classification of the construction process of the type, comparing their advantages and disadvantages. Immediately after that, mainly from power, power flow, power can four aspects of quality, voltage and power of description in grid connected wind power, large and small system grid formed by the impact of [1], the search in wind power converter type and part of the development trend.Are introduced in this paper the basic principle and mathematical model of the basic principle and mathematical model of wind power converter and doubly fed wind power converter direct drive, and more focused on the direct drive wind power generation in the grid control in the process of the design of the converter.In order to obtain the security and stability of the grid connected system, the simulation model of the wind power grid connected converter system of generator side rectifier is built in the MATLAB simulation platform.. The simulation results show that the wind power grid converter and the control strategy are scientific and reasonable..Keywords: Wind power converter and grid connected control of direct drive wind turbine1 引言1.1 课题背景及意义在当今世界中，环境的恶化、能源的枯竭已经成为制约人类社会发展的重大问题。