Research On Control Of Direct Driving Type WTG Grid Converter Based On DSP

In the wind power systems ,Direct driving type wind turbine generators are applied widely, its structure is omitted gear growth box, greatly reduce the cost and reduce the system failure rate, and make the control system is simplified. In the near future by market validation, direct driving type wind power system will play its greater energy and promote the development of wind power industry.This topic in the background, this paper were described in detail grid-connected technology on the basis of main direct driving type of wind power system of the whole power converter topology structure, control strategy research. Including direct driving type of permanent magnet synchronous wind generators' mathematical model and the control strategy of the research, dc bus design. Research grid inverter of structure and control, the whole converter adopt double PWM control system, this is a new kind of control strategy, higher precision, accuracy, also improve, choose TMS320LF2407 this designed for control motor and design of DSP chip, MATLAB software simulation experiment.The experimental results show that the wind generator direct driving type realized the full power converter blower output with wind speed change and produces amplitude. Frequency and phase change of alternating current conversion become and the grid voltage amplitude, frequency, phase consistent electricity, achieve the result of grid, achieves the desired requirements.