An Improved Flux Magnitude and Angle Control With LVRT Capability for DFIGs

作者：Li, Xiao-Ming^*; Zhang, Xiu-Yu; Lin, Zhong-Wei; Niu, Yu-Guang

来源：IEEE Transactions on Power Systems, 2018, 33(4): 3845-3853.

DOI：10.1109/TPWRS.2017.2788438

• Double fed induction generator
• flux magnitude and angle control
• internal voltage vector
• low-voltage ride-through

An improved flux magnitude and angle control (IFMAC) with low voltage ride-through (LVRT) capability is investigated for doubly fed induction generators (DFIGs). It exercises control over the generator output power and terminal voltage via employing adjustment of dq internal voltages. The major difference from traditional FMAC (TFMAC) strategy is that the proposed IFMAC strategy is designed based on a rectangular dq coordinates, which provides a decoupling control for active and reactive power via using orientation technique. As an improvement of traditional FMAC scheme, the proposed IFMAC strategy not only improves system damping, but also considerably enhances LVRT capability by limiting DFIG power angle jump during faults, which is achieved with the proposed auxiliary power angle compensation loop. Dominant eigenvalue analysis and dynamic simulations are presented and discussed, which demonstrates the capabilities of the proposed control strategy to enhance DFIG damping and LVRT performances and its contributions to power system transient stability.

• 出版日期2018-7
• 单位华北电力大学（保定）; 华北电力大学