Second-order sliding-mode controller design and tuning for grid synchronization and power control of a wind turbine-driven DFIG.
- Egileak:
- A. Susperregui, G. Tapia, M. I. Martinez, eta I. Vechiu.
- Urtea:
- 2013
- Aldizkaria:
- IET Renewable Power Generation
- Liburukia:
- 7(5)
- Hasierako orria - Amaierako orria:
- 540 - 551
- Deskribapena:
-
Abstract:
This study presents a second-order sliding-mode control (2-SMC) scheme for a wind turbine-driven doubly fed induction generator (DFIG). The tasks of grid synchronisation and power control are undertaken by two different algorithms, designed to command the rotor-side converter at a fixed switching frequency. Effective tuning equations for the parameters of both controllers are derived. A procedure is also provided that guarantees bumpless transfer between the two controllers at the instant of connecting the DFIG to the grid. The resulting 2-SMC scheme is experimentally validated on a laboratory-scale 7 kW DFIG test bench. Experimental results evidence both the high dynamic performance and the superior robustness achieved with the proposed control scheme.