Experiences with small scale wind turbines

In this paper we summarize our experiences related to 5 different types of small scale wind turbines in urban environment in power island mode. We made long term wind course measurements, wind climate mapping, energy production measurements, some transient investigation and generator characteristics checking too. We applied also the close and remote wind speed correlation analysis with the extension of the cumulative distribution function. We found that in urban area (in the city and at an airport) the wind blow isn't high because of the relatively low hub heights of the turbines. The factory guaranteed power vs. wind speed characteristics are validated by our measurements but the small island mode system (turbine, electronics and battery) don't fit to the general expectations.