An Improved Direct Power Control for Doubly Fed Induction Generator

Shuning Gao, Haoran Zhao*, Yonghao Gui, Dao Zhou, Frede Blaabjerg

*Corresponding author

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

A novel Voltage Modulated Direct Power Control (VM-DPC) is firstly designed for a Back-to-Back (BTB) converter in the Doubly Fed Induction Generator (DFIG) system. The proposed VM-DPC is built in the stator stationary reference frame ($\alpha\beta$). The proposed method uses a simple feed-forward and feedback structure without a phase-locked loop and the Park transformation. Therefore, it can be easily implemented in the BTB converter. Another essential advantage of the proposed VM-DPC is that it can transform the closed-loop DFIG system into a linear-time-invariant one, which can be analyzed and designed through multiple linear control techniques. The proposed method guarantees exponential stability in the stiff grid as well as in weak-grid integration, which is proved based on eigenvalue analysis. Simulation results demonstrate that the proposed VM-DPC has a faster transient response than conventional Vector Oriented Control (VOC). Also, it maintains a satisfactory steady-state performance at the same level as the VOC. The robustness of proposed VM-DPC against distorted voltage conditions and parameter mismatch is also tested. Finally, the proposed VM-DPC control strategy is validated in an experimental hardware prototype of a 7.5 kW DFIG system operating in real-time.
Original language English I E E E Transactions on Power Electronics 1-14 14 0885-8993 Accepted/In press - Sep 2020

Keywords

• Doubly fed induction generator (DFIG)
• direct power control (DPC)
• Transient response

• Activities

• 1 Hosting a guest lecturer

Shuning Gao

Yonghao Gui (Host)

15 Dec 201931 Mar 2020

Activity: Hosting a guest lecturer

Research Output

• 1 Article in proceeding

A Voltage Modulated Direct Power Control of the Doubly Fed Induction Generator

Gao, S., Zhao, H., Gui, Y., Zhang, Z. & Qiuwei, W., 2019, 2019 IEEE Power & Energy Society General Meeting (PESGM). IEEE, p. 1-5 5 p. 8973524. (IEEE Power and Energy Society General Meeting).

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review