The Research On The Optimized Strategies And The Application Of SVPWM

Space vector modulation (SVPWM) is one of the most popular PWM control methods, and it has a series of advantages, such as full utilization of DC voltage, wide linear range, etc. But the problem of electical power quality becomes more and more outstanding with the wide application of PWM technologies such as SVPWM,etc. How to eliminate the"pollution"of the public electric network caused by convertors is gradually becoming the focous of research in its field.The aim of this thesis is do some research on optimized control strategies of SVPWM. And based on studying the basic principle of SVPWM and.its traditional optimized methods, a novel scheme of distributing zero vectors named Factor Table Algorithm is presented. The proposed method optimizes the arrangement of the zero vectors with the Genetic Algorithms, and its optimezd parameter adoptes the combination of zero vector factors in every switch period. In another way, it is different from the traditional methods, because it isn't presented in the view of reducing switching losses but in the view of restraining harmonics of the output voltage. The results of applying control methods of SVPWM to the active inverter prove the validity of the Factor Table Algorithm.The TMS320F2812 is one of the advanced digital controllers newly produced by TI. It has excellent capabilities of the signal processing and the industrial controlling. In this paper, the smallest system of TMSF2812 is designed. And based on the research of the EV module and the digital correlating algorithmt, the software and handware method of implementing SVPWM in this DSP is described in detail.