Operation Control and Modeling-Simulation of AC-excited Variable-speed Constant-frequency(AEVSCF) Wind Power Generator

The function principle of AC-exited VSCF wind power generation system is discussed and the control task and run characteristic of doubly-fed asynchronous wind generator before and after grid-connection are analyzed in this paper. Grid-connection control and maximal wind power tracing control of generator are investigated based on stator field-oriented vector control technique. By modeling generator respectively and time-sharing simulation, the AC-exited VSCF wind power generation simulation system is founded, which includes two modules named grid-connection module and wind power tracing module. These modules in which generator model and control strategy are different can simulate the whole progress before and after grid-connection based on time-sharing and data-transferring method. Fully simulation verified the correctness and validity of the modeling and control of AC-exited VSCF wind power generator discussed in this paper.