ECN publication
PEMSWECS. Performance Evaluation Methods for Autonomous, Applications Orientated Wind Turbine Systems : systems with batteries
Published by: Publication date:
ECN Wind Energy 1-8-2001
ECN report number: Document type:
ECN-C--01-032 ECN publication
Number of pages: Full text:
89 Download PDF  

This report describes measurements and simulations to determine a method for the power performance evaluation of autonomous wind turbine systems. The method applies to small systems, equipped with a permanent magnet generator in the turbine, a diode rectifier and batteries. The analysis concentrates on the effect of the load on the powerwind speed curve of the turbine. It is shown that, although the effect of the load on the DC voltage is substantial, a 30% variation is not unusual, the effect on the power curve is relatively small. The effect on the annual averaged energy production, although dependent on the wind regime, is also expected to be small: in the range of 5%. This justifies a simple method for the measurement of the power curve.

Back to List