The Design And Simulation Of The Three-level Photo Voltage Grid Connected Inverter

With the increasement of the energy consuming, worsen of ecosystem environment and the exaltation of the human environmental protection consciousness, many countries around the world positively are looking for a kind of developing and no pollution new energies. The solar energy is used as a kind of efficiently no pollution new energy, the substitute of a kind of future the normal regulations energy of century. Currently, photo voltage grid connected generates electricity the technique among them have become the most prospected, turn to the main form of the solar application.The three-level inverter is the core part of the system, its main function is that adverse-transforming DG into AC and send into the electric net. At the same time, it will realize the maximum power point trace (MPPT), having perfect protected circuits to guarantee the safely running of the whole system.This text firstly put forward to the composing diagram of the instrument, and made a lot of introduction to the functions of each part; Introduced the reason to choose the DSP chip TMS320LF2407; bring out a new design of the flyback converter with large-scale working voltage.In the software aspects, this text introduce the space vector PWM (SVPWM); and CCS programming; For the MPPT, this text gives a detailed analyze to two kinds of common used methods, and put forward own method views.In the end, this text makes use of MATLAB to simulate power electric.