The Research And Design On 10KW Three-phase Emergency Power Supply Based On DSP

With the constamment development of power electronics technology, Emergency Power Supply develops rapidly, especially the high efficient Emergency Power Supply has been becoming a hot spot of current research. The Emergency Power Supply provides much convenience for people job and life. So researching high efficient Emergency Power Supply has great important meaning as well as capacious market prospect.In this paper, the situation and development of Emergency Power Supply summarized. It's structure and operational principle is analyzed. By studying the emergency power supply technical specification and demand in view of the users, a whole technique plan is designed. According to the request of Emergency Power Supply user advanced, calculation to accumulator capability is designed. In order to realize accumulator advaced charge way , reduce device volume and realize emergency AC power supply, by making use of switch power supply technology and voltage source inverter technology, the primary circuit topology of Emergency Power Supply is designed. The switch power supply circuit, high frequency transformer and 3-phase inverter circuit, based on half-bridge, are designed and calculated. And the parts type is ascertained.According to the control demand of Emergency Power Supply, a Emergency Power Supply system controller program using DSP is put forward in this paper. The circuit of DSP application system, input/output and HMI is designed in detail. The output voltage closed-loop control theory of Emergency Power Supply is researched. And the control algorithm of Emergency Power Supply output voltage based on self-tuning fuzzy-PI is designed. The Matlab simulation model is established. The simulation result show that the output voltage of inventer is stable and the dynamic response system is improved effectively.The mode switching of Emergency Power Supply, mainly including inverter mode switching and charge mode switching, is analyzed. Emergency Power Supply software composing is designed in terms of modularization. The program of each module of Emergency Power Supply is designed. And SPWM based on DSP is realized.