Design of wind power generators change oars system

HU Guo-qiang
（Shanghai Electric Wind Power Equipment Co.，Ltd.， Shanghai 201306， China）

Abstract： In order to solve the problems that the wind generator set in the complex wind condition can basic maintain the stability running，the PLC，frequency changer technology was investigated to the wind power generators change oars system. After the analysis of change oars system automatic control，the relationship between the PLC，frequency changer，and the change oars motor was established. The PLC and PLC analogue inputs module were used to collect the natural wind speed and the wind power generators three blades's angle data information，and the internal data was processed automatically. Through the control of frequency changer output，and then the change oars motor working condition was controlled，making three piece of blades rotate on and natural wind speed with the oars angle of the corresponding. The performance was evaluated on the condition that the generator can automatically remain stable operation. Through the analysis and verification，the results show that the system realizes the automatic control of the wind power generators change oars system.
Key words： wind generators；change oars；encoder；PLC；frequency changer