基于SPWM和空间矢量控制的异步电机变频调速研究
关键词 变频调速 SPWM SVPWM 80C196MC单片机
毕业论文设计说明书外文摘要
Title The research of asynchronous motor based on SPWM and space vector control
Abstract
Variable-speed drive system is the direction of AC Variable-speed drive system.Graduation design of the main work content is using microcomputer control of SPWM inverter and space vector, study of asynchronous motor variable frequency speed regulating principle, and through the comparison of motor stator current, voltage, component of magnetic flux and magnetic flux trace waveform, find out the best way to control. In order to grasp the key of variable voltage variable frequency speed regulation system. In this paper, we first introduce the the basic control model of asynchronous motor variable frequency and variable voltage variable frequency, thus the technology of SPWM and SVPWM, and can draw based on the steady-state model of the asynchronous motor variable frequency speed control system diagram. VVVF control algorithm also has many, the Intel8OC196MC 16 bit microcontroller as CPU control circuit, under laboratory conditions using oscilloscope observation under different control forms different modulation modes on the system performance influence. By comparing the parameters change, find out the ideal frequency control method.
Keywords frequency control SPWM SVPWM 80C196MC microcontroller
目 次
1 绪论 1
1.1 课题研究的现状及发展趋势 1
1.2 课题研究的意义和价值 1
1.3 研究内容 2
2 异步电机变频调速基本原理 3
2.1 变压变频调速的基本控制方式 3
2.2 变压变频器 4
3 PWM技术 7
3.1 正弦波脉宽调制（SPWM）技术 7
3.2 电压空间矢量PWM（SVPWM)控制技术 9
4 矢量控制 13
4.1 矢量控制的基本构想 13
4.2 坐标变换 13
5 80C196MC单片机 16
6 异步电动机SPWM和电压空间矢量变频调速系统的实验 17
6.1 实验的测量数据 17
6.2 实验的结果与分析 17
结 论 28
致 谢 29
参考文献30
1 绪论
本章是本文的绪论，着重论述了变压变频调速控制技术的现状与发展，SPWM技术与SVPWM技术，还有本次课题的价值和研究的意义，最后简要归纳了本课题的研究任务。
1.1 课题研究的现状及发展趋势
1.2 课题研究的意义和价值
从发展以来，交流变频调速技术凭借优越的性能获得了飞速的提高，伴随着电力电子器件的发展和控制理论的进步，变频调速凭借它调速精度高、调速控制范围宽、响应速度迅速、节能效果好等优点[6]，现已在电力、运输、制造等各个领域被广泛应用。交流电机调速技术的优势明显，所以，对于变频调速系统原理的研究，对脉宽调制技术和单片机的应用，有着一定的实用价值和实际的意义。
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