Control of the permanent magnet synchronous generator using sliding modes for wind turbine application 	
Daniel Gerardo Ortega Meza, Onofre Amador Morfin GarduÃ±o, Manuel Ivan Castellanos Garcia 
Transactions on Machine Design , Vol. 5, No. 2, 2017.
DOI: 
Link: http://www.dline.info/tmd/fulltext/v5n2/tmdv5n2_3.pdf
Abstract:
One of the most used generators applied in medium capacity wind system is the permeant magnet synchronous generator, because of its high efficiency. The wind speed is constantly changing and the control system can be controlling the generatorÂ´s speed by currents to maximize the wind energy. In order to optimize the operation of the wind system, a robust control using Super-Twisting algorithm is applied, with which the generated power will be delivered to the grid electricity efficiently. We propose a decentralized controller in cascade form where the first stage the speed is controlled and the second stage the grid-side inverter controller side to regulate the bus DC-voltage and connect the wind system with the utility grid. A dynamic model of the permanent magnet synchronous generator at dq coordinate frame is used in the process design of the speed controller. A LCL-filter is used as coupling medium between the wind system and the grid. Finally, simulation results of the wind systems are reported to validate the performance of the proposed controller.