The Study Of Variable Frequence Variable Speed System Of Induction Motor Based On DSP

Recently,the research of variable frequency adjustable speed technology of ac motors is an important issue in electrical drive field.The pulse width modulation which is a key technology has great contribution to the development of variable frequency variable speed technology. And the high-speed digital signal processor (DSP) can deal with the complicated control algorithm, and suit for the velocity modulation system that create the high performance. In this paper, we studied the software design method of the speed control system base on the DSP which is produced by the TI Company.In this paper, we studied the theory of variable frequency variable speed, the mechanical characteristic of ac machine when unvaried u/f,and two pulse width modulation technologies which are sine wave PWM and space voltage vector PWM, learned the hardware structure of LF2407A and how to program. Base on the two theories, designed and writed the program writed the codes to generate the PWM waves in the two different modulation technologies, and the program design of other modules. Had completed the software design of...