The Lebost Wind Turbine - Laboratory tests and data analysis

Wind Energy Innovative Systems Conference Proceedings

“…1 where it may be compared with t.hP YWT. A simplified analysis of the theoretical power coefficient based on a modification of impulse turbine theory to include the effect of decreased exit pressure associated with the diffuser skirt was developed by Hoffert et al (1978) indicating linear torque-rotation rate characteristics with peak torque under static conditions. This differs markedly from the Darrieus and Darrieus-Savonius systems discussed by Banas and Sullivan (1977) which have zero or low starting torques, respectively; a factor which can greatly influence system performance for certain load types.…”

“…Whereas a 1 arge number of concepts fitting the "augmented-vert i ca 1 axis" category are possible in principle, we are aware of only two which have progressed sufficiently in their development and testing cycles to permit rPnsonable assessment of performance and cost-effectiveness at this time. These are the Yen :..Jind Turbine (Y~H) documented in the pape}'S by Yen (1975, 1976, 1977, 1978a, 1979), Hsu et al (1978) and Loth (1978), and, the Patent by Yen (1978b); and the Lebost Wind Turbine documented in the papers by Hoffert et al (1978) and Rugg et al (1979) and the Patent by Lebost (1977). These machines will be discussed in some detail here.…”