Dsp-based Digital Control, Frequency Control System

Variable frequency speed regulation system based on the voltage space-vector is researched in this paper, the principle of the voltage space-vector is presented, and the third part' s software strategy of voltage space-vector is analyzed, the method of the third part' s software of voltage space-vector is imitated with Simulink. At the same time, the duty time and duty order of the two zero-vector are analyzed and showed that the voltage space-vector PWM is actually a modulated method by adding the harmonic to the sine wave.Based on the TMS320F240 controller produced by TI Company, the hardware and software designation of the symmetrical voltage space-vector PWM is presented. Designed a digital controller with TMS320F240 to modulate the speed of the Motor, in which the keyboard and LED display are bedded. It can be to set the frequency of Motor and display the run frequency of Motor in real time. After the digital controller of TMS320F240 has been finished, designed another digital controller with TMS320LF2407A.Prototype of the symmetrical typical voltage space-vector of open-loop variable frequency speed system is designed by using the TMS320F240 digital controller and the IPM(intelligent power model),With which had a exam on the Motor and the experimental results are also given. From the results we can conclude that the results are according with the theory analysis.