Design Of Inverter Power Source For Wind-Power Based On DSP

In recent years, along with the destruction of the eco-environment and natural disasters frequently occurred, the problems of environment has become a global issue. Another one, with the rapid development of economy, the energy issue also becomes increasingly fierce. Therefore, development and utilization new energy is not only the times demand but also the best choice of strategy. The energy of wind who has been seen as a member of the new energys, it has been paid more and more attention by countries all over the world with its clean and renewable. Wind power generation will replace the traditional mode that will be the trend of development from now on. Inverter power supply is a key technology of wind power generation system, so the study of wind-power inverter power supply has its greatly practical significance.In this paper, it mainly study the 1000W small wind power of inverter power supply.Firstly it detailly describe the development of inverter technology and the technology of digital control. And then it establish a mathematic model of the system. Last, to the PID control, state feedback control and the dead beat control methods in the application of wind power inverter made a detailed theoretical derivation and comparative study. Given the design of hardware circuit that useing the production of TMS320LF2407A maded by TI company as the controller of wind power inverter, TMS320LF2407A is one production of 16 fixed-point DSP chip specially maded by TI company for motor control. It contains two modules of manager event, can be directly used for the PWM waves sequence issued by pulse width modulation. Paper takes out a detailed analysis and introduced about inverter power supply of main circuit, drive circuit and protect circuit, and puts forward the interference and solution that the system may meet with in the process of operation. Paper also gives the software design of the system, and the methods of software anti-interference. Finally through the mutual coordination of hardware and software, the system is working in a stable condition,and can output good waveform ande voltage stability of 220V / 50Hz of alternating current.Finally, through MATLAB/simulink software of system simulation, the wind power inverter power supply has carried on the simulation of theory. The simulation process take the inverter circuit model of single-phase full bridge, and the switching device switch frequency is 20KHz. This paper respectively simulate open-loop and closed-loop system, through the results of the simulation analysis, and no matter in no-load or with load conditions, the system output good waveform and the voltage is very stable, including PWM waves which is very symmetric.Although in nonlinear load it would appear some distortion, but it still can achieve the desired.