| After developing many years, analog controller used on the field of inverters is very nature, but is also have many disadvantages. With appearance and development of DSP, the digital control system has advantages of flexible control, high integration, and strong anti-disturb ability, the realization of advanced control arithmetic and the convenience of real-time control. Digital control has been becoming more and more used on the field of inverters.This thesis research the principle of inverter power supply control, deeply analyse the characteristics of the three-loop control system. On the basis of circuit model of inverter power supply, the continuous and discrete space-sate mathematic models are established, and use software of MATLAB, SIMULINK and ORCAD to establish the inverter simulation model which is use to validate the feasibility of the Multiple-loop control of inverters' system. The main circuit has been researched in this paper, and the affectations of some main circuit's parameters always been analyzed, and the reason of transformer bias magnetization are analyzed, the measures of valid restrained bias magnetization are given as well. On the basis of actual application on engineering and concrete requirements on power supply system, we use TMS320F2812DSP to realize 400Hz, 115V single phase three-loop digital controlled inverter, and connect three of this single phase inverters to be one three phase inverter, and realize some additional functions such as communication, display, and protection etc.
|
PDF Full Text Request