笼型异步电机发电系统的研究(含仿真)
笼型异步电机发电系统的研究(含仿真)(任务书,开题报告,外文翻译,论文说明书16700字,仿真)
摘 要
直接转矩控制技术是继矢量控制技术之后,在交流传动领域内发展迅速的一种高性能调速技术,该控制方法以其思路新颖、结构简单及性能良好等优点引起了广泛关注和研究。与矢量控制技术不同,直接转矩控制技术采用定子磁场定向,直接将磁通和电磁转矩作为控制量,对电磁转矩的控制更加简捷快速,提高了系统的动态响应能力。由于直接转矩控制技术本身的固有优势,使直接转矩控制的理论研究和技术开发越来越受到重视,进展的步伐也越来越快。
本文以笼型异步电机为例,对其起动发电过程进行了仿真与研究。在起动发电过程中主要采用了直接转矩控制策略。主要围绕异步电机起动发电过程进行研究,首先要建立异步电机的数学模型,进而建立异步电机起动发电系统数学模型,应用MATLAB软件建立关于异步电机起动发电过程的直接转矩控制的仿真模型,对其进行仿真实验,得到磁链、转矩等波形图,通过仿真研究起动发电转换过程,分析异步电机发电系统的动态性能和稳态性能。仿真结果表明,用Simulink进行异步电机发电系统的仿真比较方便,且高效直观,得到的结果也是比较接近实际的。 [资料来源:http://doc163.com]
关键词:发电系统 异步电动机 直接转矩控制 仿真
Research on power generation system of asynchronous motor
Abstract
Direct Torque Control technology is a high-speed technology in the field of AC drive following the technique of vector control and it has rapid development in recent years .This control strategy attracts wide attention and research for its novel idea, simple structure and good performance. Differ from the vector control technologies, Direct Torque Control technology uses the stator flux orientation and directly makes the flux and electromagnetic torque as the control volume, therefore the control of the electromagnetic torque is simple and fast, the system dynamic response capability is improved. Due to the inherent advantages of Direct Torque Control technology, its theoretical research and technological development is receiving increasing attention, also the pace of progress faster and faster.
In this paper, taking asynchronous motors for example, I have a simulation and research on their staring and generation process. The direct torque control strategy has mainly been used in the process of starting and generation. This paper mainly focus on the process of starting and generation of asynchronous motor. Firstly, I establish a mathematical model of asynchronous motor, then establish a mathematical model of staring and generation system of asynchronous motor. And I use the MATLAB software to simulate the model of the process of starting and generation of induction motor, which use the direct torque control strategy. By its simulation experiment, we can get the flux, torque and other waveform. Through simulation studies of power generation system of asynchronous motor, we can get analysis of dynamic performance and steady-state performance of asynchronous motors. The results of simulation show that using the Simulink to simulate the asynchronous motor power generation system is more convenient, efficient and intuitive. And the result is close to the reality. [资料来源:Doc163.com]
Key Words: Power generation systems; Asynchronous motor; Direct torque control; Simulation
[资料来源:Doc163.com]
目 录
摘 要 I
Abstract II [资料来源:http://www.doc163.com]
第一章 绪论 1
1.1 异步电机起动/发电系统研究现状及方向 1
1.2 异步电机起动/发电系统的关键技术 2
1.2.1 异步电机发电状态下的直接转矩控制技术 2
1.2.2 起动和发电状态下的系统综合设计技术 4
1.2.3 宽转速范围内提供恒压电功率技术 5
1.3 课题的研究背景和意义 5
1.4 本文的结构简介 7
第二章 异步电机发电系统的相关原理 8
2.1 异步电机起动发电系统 8
2.1.1异步电机起动发电系统概述 8
2.1.2异步电机起动发电的系统构成及控制策略 8
2.2 直接转矩控制 9
2.2.1直接转矩控制的现状及发展趋势 10
2.2.2异步电机直接转矩控制的原理 11
2.3 异步电机起动向发电转换的控制机理 13
第三章 异步电机发电系统数学模型的建立 14
3.1 坐标变换模型 14 [资料来源:http://www.doc163.com]
3.2 异步电机数学模型的建立 15
3.3 直接转矩的控制器模型 16
3.3.1 转矩控制模型 17
3.3.2 磁链控制模型 17
3.3.3 转速控制模型 18
3.4 逆变器模型 18
第四章 异步电机发电系统的建模仿真与分析 22
4.1 Matlab/Simulink简介 22
4.2 异步电机发电系统的建模 22
4.2.1 坐标变换模型 22
4.2.2 异步电机仿真模型 23
4.2.3 直接转矩的控制器模型 27
4.2.4 逆变器模型 31
4.2.5 异步电机DTC控制系统仿真模型 31
4.3 异步电机发电系统仿真结果分析 32
结语 36
参考文献 37
致谢 38
[资料来源:https://www.doc163.com]