Frequency Control System Based On Space Voltage Vector

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 various synthesis of voltage space-vector is analyzed. The revelation of modulated wave of voltage space-vector is also researched, 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 produced by Tl Company, the hardware and software designation of two typical voltage space-vector PWM, those are symmetrical voltage space-vector and two-quadrant modulated voltage space-vector are given. Prototype of two typical voltage space-vector of open-loop variable frequency speed system is designed by using TMS320F240 and the experimental results are also given, which are identical with the theory analysis.