Autonomous BDFIG-wind generator with torque and pitch control for maximum efficiency in a water pumping system

被引:17
作者
Camocardi, P. [1 ,2 ]
Battaiotto, P. [1 ]
Mantz, R. [1 ,3 ]
机构
[1] Univ Nacl La Plata, LEICI, RA-1900 La Plata, Argentina
[2] Consejo Nacl Invest Cient & Tecn, RA-1033 Buenos Aires, DF, Argentina
[3] Comis Invest Cient Prov Buenos Aires, Buenos Aires, DF, Argentina
关键词
Wind energy; Water pumping; Brushless doubly-fed induction generator; Dynamical sliding mode control; Pitch control; SLIDING MODE CONTROL;
D O I
10.1016/j.ijhydene.2010.02.099
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
This paper presents and analyzes the operation strategy for an autonomous wind energy conversion system oriented to water pumping. It consists of a wind turbine with a Brushless Doubly-Fed Induction Generator (BDFIG), electrically coupled with a squirrel cage induction machine moving a centrifugal type water pump. Because of no brushes and slip rings, the BDFIG is suitable for autonomous systems, which often work in hard conditions. Additionally, the power flow on the BDFIG principal stator could be driven from a fractional power converter connected on the auxiliary stator winding. This Turbine-BDFIG and Motor-Pump configuration provides a high robustness and reliability, reducing the operational and maintenance costs. The operation strategy proposes, for wind speeds smaller than the rated, to maximize the volume of water pumped based on the optimization of the wind energy capture. To do that, a sliding mode control tracks the optimal turbine torque by means of a torque control. Meanwhile, for wind speeds greater than the rated, a pitch control keeps the water pump within the safe operation area by adjusting the speed and power of the turbine in their rated values. To assess and corroborate the proposed strategy, simulations with different wind profiles are made. (C) 2010 Professor T. Nejat Veziroglu. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码:5778 / 5785
页数:8
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