Abstract
This article presents a voltage-modulated direct power control (VM-DPC) with an additional parallel compensator for the doubly fed induction generator under unbalanced grid conditions. The proposed method not only guarantees a satisfying steady-state performance but provides also a regulating property of the negative-sequence output currents through designed negative-sequence parallel compensator. It can provide symmetrical stator currents and suppress the ripples in both active and reactive powers under unbalanced grid conditions. The performance of the proposed method are verified by comparing it with three different control strategies in simulations carried out in MATLAB/Simulink SimScape Power System. Finally, the effectiveness of the proposed method is evaluated in an experimental prototype, which proves the proposed VM-DPC with the additional compensator has a satisfactory steady-state performance and a fast power transient response under unbalanced grid conditions.
| Original language | English |
|---|---|
| Article number | 9198079 |
| Pages (from-to) | 9607-9618 |
| Number of pages | 12 |
| Journal | IEEE Transactions on Industrial Electronics |
| Volume | 68 |
| Issue number | 10 |
| DOIs | |
| State | Published - Oct 2021 |
| Externally published | Yes |
Funding
Manuscript received April 22, 2020; revised July 7, 2020 and August 10, 2020; accepted August 25, 2020. Date of publication September 15, 2020; date of current version June 28, 2021. This work was supported by the National Key R&D Program of China under Grant 2018YFB0904004. (Corresponding author: Haoran Zhao.) Shuning Gao is with the Automation and Control Section, Department of Electronic Systems, Aalborg University, 9220 Aalborg, Denmark. He is now with the School of Electrical Engineering, Shandong University, Jinan 250061, China (e-mail: [email protected]).
Keywords
- Direct power control (DPC)
- doubly fed induction generator (DFIG)
- rotor side converter (RSC)
- unbalanced voltage condition
