论文信息 - Analysis and simulation of a wind‐electric battery charging system

Analysis and simulation of a wind‐electric battery charging system

A small commercial wind-electric battery-charging system based on a three-bladed rotor has been analysed in a detailed fashion. The system consists of a synchronous generator with permanent magnets, a six-pulse rectifier and a battery bank with charge controller. A steady-state power curve is predicted based on the electric characteristics found experimentally and the aerodynamic performance of the rotor simulated with a version of blade element momentum (BEM) theory developed in our group. The BEM code has been designed to account for variable Reynolds numbers at different blade sections and stall conditions. The findings are compared with the manufacturer's specifications, and a detailed discussion is provided. A very good agreement with the steady-state power curve given by the manufacturer has been obtained after accounting for different sources of power losses, such as voltage drops in the rectifier, Joule heating in the power cables and losses in the generator's core. The system is found to operate near the aerodynamic optimum for all wind speeds studied, whereas electrical losses are significant near rated power. Some recommendations for improving the system performance are provided. Copyright © 2005 John Wiley & Sons, Ltd.

[1] Michael S. Selig,et al. Wind tunnel aerodynamic tests of six airfoils for use on small wind turbines , 2004 .

[2] Siegfried Heier,et al. Grid Integration of Wind Energy Conversion Systems , 1998 .

[3] D. Corbus,et al. Certification testing for small wind turbines , 1999 .

[4] Ervin Bossanyi,et al. Wind Energy Handbook , 2001 .

[5] Dan M. Somers,et al. A computer program for the design and analysis of low-speed airfoils, supplement , 1980 .

[6] Herman Snel,et al. Review of Aerodynamics for Wind Turbines , 2003 .

[7] Oliver Probst,et al. Theory of wind-electric water pumping , 2004 .

[8] Martin Otto Laver Hansen,et al. Aerodynamics of wind turbines : rotors, loads and structure , 2000 .

[9] Vahan Gevorgian,et al. A peak power tracker for small wind turbines in battery charging applications , 1999 .

[10] J. T. Bialasiewicz. Furling control for small wind turbine power regulation , 2003, 2003 IEEE International Symposium on Industrial Electronics ( Cat. No.03TH8692).

[11] D. Corbus,et al. Battery Voltage Stability Effects on Small Wind Turbine Energy Capture: Preprint , 2002 .

[12] C. P. van Dam,et al. Aerodynamic Analysis of Blunt Trailing Edge Airfoils , 2003 .