3Penn R, Olare J C, Asher O M. Doubly fed using back--to-back PWM converters and variable-speed wind--energy generation[J] induction generator ts application to Applications, lEE Proceedings -, 1996, 143(3) Electric Power 231-241.
4Trzynadlowski A M, Patriciu N, Blaabjerg F, et al. A hybrid, current--source/voltage-source power inverter circuit[J]. Power Electronics, IEEE Transactions on, 2001, 16(6): 866-871.
5Schuster A. A matrix converter without reactive clamp elements for an induction motor drive system[C], 1998.
5TEODORESCU R,BLAABJERG F. Flexible control of small wind turbines with grid failure detection operating in stand-alone and grid-conneetod model [J]. IEEE Trans on Power Electronics ,2004, 19(5): 1323-1332.
6CHINCHILLA M, ARNALTES S, BURGOS J C. Control of permanentmagnet generators applied to variable-speed wind-energy systems connected to the grid [J ]. IEEE Trans on Energy Conversion,2006,21 (1) : 130-135.
7WANG Quin-cy,CHANG Liu-chen. An intelligent maximum power extraction algorithm for inverter,based variable speed wind turbine system [ J ]. IEEE Trans on Power Electronics, 2004,19 ( 5 ) : 1242-1249.
