基于DSP的通用变频调速系统设计.doc

摘　　要 近年来，交流电机变频调速及其相关技术的研究已成为现代电气传动领域的一个重要课题，并且随着新的电力电子器件和微处理器的推出以及交流电机控制理论的发展，交流变频调速技术还将会取得巨大进步。在交流变频调速领域中，脉宽调制技术作为一项关键技术，在变频调速技术的发展中得到重要应用，而恒压频比控制(U/F=C)是通用变频器中应用最广泛的一种控制方式。 本文以三相交流异步电动机为被控对象，以TMS320LF2407A单片机(16位定点DSP芯片)作为处理器，采用智能功率模块PM10CSJ060，通过SPWM控制技术对交流电机实现恒压频比控制，设计了基于DSP的通用变频调速系统。全文分别介绍了课题的研究背景和意义以及国内外变频调速发展的情况，以及三相交流电动机的结构及工作原理和SPWM控制技术，然后给出了系统各部分硬件电路的工作原理、参数计算以及各部分器件的选取。接着介绍了TI公司的DSP芯片TMS320LF2407A的一些特点和内部资源以及SPWM波形原理和控制算法，最后给出了系统的总体程序流程图。  Abstract In recent years, AC Motor Frequency Control and related technology research has become a modern electric drive an important subject areas, and with the new power electronic devices and the introduction of the microprocessor and the exchange of theoretical development of motor control, AC frequency converter Technology will also be made tremendous progress. In exchange in the field of Frequency Control, PWM technology as a key technology in the VVVF technology are important in the development of applications, and the constant pressure than the frequency control (U/F = C) is the application of the most common frequency converter A wide range of control. In this paper, three-phase AC induction motor to object to TMS320LF2407A SCM (16 fixed-point DSP chips) as a processor, a smart power module PM10CSJ060, through SPWM AC motor control technology to achieve constant pressure than the frequency control, design The DSP-based Universal Frequency Control System. They described the issue as well as research background and significance of the development of domestic and international Frequency Control, the combination of the three-phase AC motor structure and working principle and SPWM control technology, and then presented different parts of the system hardware circuit works, and calculated parameters Select all parts of the device. Then on TIs DSP chips TMS320LF2407A of some of the features and internal resources and SPWM wave principle and control algorithms, the system is given the overall process flow chart. 目　　录