文档介绍：南京航空航天大学硕士学位论文
摘要
随着电力电子技术的不断发展,电气传动控制在现代化建设中起着极为重
要的作用,为了满足高性能、节能和环保的要求,交流调速控制系统以其特有
的优点正逐步取代传统的直流调速,在电气传动领域中扮演着重要的角色。
本文主要介绍了基于 DSP 的交流异步电机变频调速控制系统的研究和实
现。利用 TI 公司的 TMS320F240 电机专用控制芯片作为控制核心,同时设计了
电机驱动模块及电源模块。
文中阐述了交流异步电机的数学模型是高阶、非线性、强耦合的多变量输
入输出系统,介绍了交流电机的正弦脉宽调制、开环电压空间矢量的 U/F 控制
和磁场定向控制的原理及控制算法,并利用 DSP 构成控制系统,通过汇编语言
和 16 位定点 C 语言混合编程的方法实现了上述的变频调速控制策略。同时为了
实现该控制系统的实用性,还设计了 DSP 最小系统。
论文中给出了实验结果和波形分析,并且与 MATLAB/SIMULINK 仿真的波
形进行比较。通过实验证明:该调速控制系统可以实现在 5~50Hz 范围内平滑
调速,且具有良好的动静态调速性能,实验结果验证了系统设计的有效性、可
行性。
关键词:DSP、SVPWM、磁场定向、交流异步电机、变频调速
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基于 DSP 的交流电机变频调速系统研究和实现
Abstract
With the continuous development of the electrical and electronical technology,
electric drives act as extremely prominent function in modernization. In order to meet
the requirements of high performance, environmental protection and energy
conservation, AC variable-frequency speed regulating system with the special
advantage is replacing the conventional direct current speed regulating system
gradually. Thus AC variable-frequency speed regulating system makes the important
role in the electric drives.
This paper primarily introduced the research and implementation of AC motor
variable-frequency speed regulating system based on DSP. Making use of the Texas
Instruments’ TMS320F240 that is special chip for motor control. And designed the
motor driver and power source module.
This paper expatiated that the mathematics models of AC motor is higher order,
non-linear and closed coupling, multivariable input-output system. And introduces the
principle and the algorithm of Sine Pulse Width Modulation (SPWM), opened-loop
Space Voltage Pulse Width Modulation Control(SVPWM) and Field Oriented
Control(FOC).Finally, realized the control strategies of variable-frequency speed
regulating using assembly and C language. I also designed the DSP’s minimum
system for the sake of realize the system practicability.
The paper shows the experiment r