Sensorless variable speed operation of doubly-fed reluctance wind generators

作     者：Jovanovic, Milutin Ademi, Sul Binns, Richard 

作者机构：Northumbria Univ Fac Engn & Environm Newcastle Upon Tyne Tyne & Wear England Univ Warwick Warwick Mfg Grp Coventry W Midlands England 

出 版 物：《IET RENEWABLE POWER GENERATION》 

年 卷 期：2020年第14卷第15期

页      面：2810-2819页

核心收录：

学科分类：0820[工学-石油与天然气工程] 0808[工学-电气工程] 08[工学] 

主　　题：rotors reluctance generators machine vector control angular velocity control power convertors brushless machines machine control power generation control wind power plants wind turbines asynchronous generators shafts comprehensive comparative simulation sensorless controller precise speed reference tracking intrinsically decoupled real power responses reactive power responses grid-connected winding typical variable loading profiles narrow speed ranges laboratory emulated wind turbine sensorless variable speed operation doubly-fed reluctance wind generators improved flux vector orientated control scheme more robust flux vector orientated control scheme emerging doubly-fed reluctance generator shaft angular position computer-simulated fractional power electronics converter rating promising medium-speed brushless machine technology industrial communities appealing economical solution compromised reliability high maintenance requirements conventional wound rotor doubly-fed induction generators commercial wind turbines 

摘      要：An improved and more robust flux vector orientated control scheme for an emerging doubly-fed reluctance generator without a shaft angular position or velocity sensor has been proposed, computer-simulated, and experimentally verified. Whilst retaining the cost and other advantages of using a fractional power electronics converter rating, this promising medium-speed brushless machine technology has been viewed by research and industrial communities as an appealing economical solution for the compromised reliability and high maintenance requirements associated with the presence of slip rings, brushes, and the failures prone three-stage gearbox of conventional wound rotor doubly-fed induction generators, traditionally deployed for commercial wind turbines. The comprehensive comparative simulation and test results obtained have been shown to agree very well undoubtedly demonstrating the good overall performance of the sensorless controller. A precise speed reference tracking with smooth, intrinsically decoupled real and reactive power responses of the grid-connected winding has been achieved for the typical variable loading profiles and narrow speed ranges (e.g. around $2:1$2:1 or so) of a laboratory emulated wind turbine.