Wind power generation independent variable pitch control system based on TMS320F2812

Abstract

The invention relates to a wind power generation control system, in particular to a wind power generation independent variable pitch control system based on TMS320F2812. A master control system, a mains supply, a safety protection system, variable pitch controllers, variable pitch drivers, standby power sources and motors are included. The variable pitch control system is connected with the mastercontrol system, the mains supply and the safety protection system in a cabin in an electric slip ring manner, and the variable pitch control system is connected with the master control system in a CAN communication manner. The variable pitch controllers, the variable pitch drivers and the standby power sources are located in variable pitch control cabinets in hubs. One end of the variable pitch controller of each paddle is connected with the master control system through CAN communication, and the variable pitch controller of each paddle conducts real-time communication. The pitch angle of the paddles is reasonably controlled so that vibration of a tower and loads of the paddles can be reduced, accordingly, the fatigue degree of a wind turbine is reduced, and the service life of the windturbine is prolonged. The electric variable pitch control system obtains the pitch angle instruction through pitch angle controllers, then, the pitch angle instruction is converted into a control signal of a servo motor, and accordingly control over the paddle position is achieved.

Description

technical field [0001] The present invention relates to a wind power generation control system, in particular to a TMS320F2812-based wind power generation independent pitch control system. Background technique [0002] In recent years, with the increasingly prominent environmental problems and the increasingly tense energy supply, people have paid more and more attention to renewable energy. Under the national guidelines for vigorously developing new energy, wind power technology has developed rapidly, but with As more and more wind turbines are running, the problems are also increasing. Therefore, how to ensure the safe, reliable and efficient operation of wind turbines is the current key research direction of the wind power industry. As one of the most important components of wind turbines, the pitch control system is safe and reliable, which directly affects the safety performance, power generation efficiency, and power generation quality of the entire wind turbine. It ca...

AI Technical Summary

Problems solved by technology

Synchronous pitch adjustment is the synchronous adjustment of the pitch angles of the three blades. Because its algorithm is simple and easy to implement, it has been widely used. However, under certain wind conditions, the external forces on the blades at different positions are also different, which will lead to The force on the three blades is unbalanced, and the torque difference can reach about 25%, resulting in axial vibration of the fan, which not only affects the service life of the fan, but also seriously affects its power generation efficiency

Therefore, the independent pitch control strategy has attracted the research of many researchers, but in the independent pitch process, it needs to be controlled individually according to the analysis of the dynamic characteristics of each blade. The changes are very frequent during the rotation process, and the requirements for the response speed are relatively high, otherwise it will have a more significant impact on the stability and effectiveness of the system during the pitch change process

Images