SVPWM风电并网逆变器电能质量分析与仿真
关键词： SVPWM；电网电压定向；电能质量；风电并网；MATLAB/SIMULINK
Power quality analysis and simulation of wind power grid-connected inverter
Abstract: With the global energy crisis and environmental pollution is worsening, development and use of sustainable clean renewable energy is imperative, wind power is the solution to this problem one way. And inverter as a renewable energy and grid interface plays an important role in its performance directly affects the energy efficiency and power quality. This paper describes the on grid voltage orientation phase grid-connected inverter system, described its topological structure, working principle and implementation. This paper introduces its three-phase stationary coordinate system, two-phase and two-phase stationary coordinate system rotating coordinate system conversion. Use based on the grid voltage vector control method of the converter to control the coordinate system under the current decoupling, the control system of active and reactive current, complete system design parameters. Build a voltage type PWM inverter simulation model, and using space vector modulation (SVPWM) technology for simulation experiments to explain the zero vectors centralized and decentralized different. Analysis and study of filter parameters for the power quality.
Keywords: SVPWM; voltage oriented control; power quality; Wind Power Grid; MATLAB/SIMULINK
目录
1 绪论 1
1.1 课题背景 1
1.1.1 国内外风电产业发展情况 1
1.1.2 风力发电系统概述 2
1.2 并网逆变器现状 5
1.3 本文主要研究内容 6
2 电网侧逆变器的控制 7
2.1 坐标变换 7
2.2 电网侧逆变器的数学模型 9
2.3 电网侧逆变器的仿真模型 14
本章小结 15
3 系统仿真 16
3.1 MATLAB/SIMULINK环境简介 16
3.2 系统仿真模型 17
3.3 SVPWM的仿真 18
3.3.1 空间矢量调制算法 19
3.3.2 基本空间矢量定义 19
本章小结 29
4 风电并网电能质量分析 30
4.1 风电并网引起的电网电能质量问题 30
4.1.1 风电并网引起的电网电压偏差 30
4.1.2 风电并网引起的电网电压波动和闪变 30
4.1.3 网引起的电网谐波污染 31