Dynamic Model and Control of DFIG Wind Energy Systems Based on Power Transfer Matrix

作者：Rezaei Esmaeil^*; Tabesh Ahmadreza; Ebrahimi Mohammad

来源：IEEE Transactions on Power Delivery, 2012, 27(3): 1485-1493.

DOI：10.1109/TPWRD.2012.2195685

• Doubly fed induction generator (DFIG)
• dynamics modeling
• instantaneous power
• multivariable control
• wind energy systems
• wind power control
• wind turbine generator

This paper presents a power transfer matrix model and multivariable control method for a doubly-fed induction generator (DFIG) wind energy system. The power transfer matrix model uses instantaneous real/reactive power components as the system state variables. It is shown that using the power transfer matrix model improves the robustness of controllers as the power waveforms are independent of a frame of reference. The sequential loop closing technique is used to design the controllers based on the linearized model of the wind energy system. The designed controller includes six compensators for capturing the maximum wind power and supplying the required reactive power to the DFIG. A power/current limiting scheme is also presented to protect power converters during a fault. The validity and performance of the proposed modeling and control approaches are investigated using a study system consisting of a grid-connected DFIG wind energy conversion system. This investigation uses the time-domain simulation of the study system to: 1) validate the presented model and its assumptions, 2) show the tracking and disturbance rejection capabilities of the designed control system, and 3) test the robustness of the designed controller to the uncertainties of the model parameters.

• 出版日期2012-7