Developing the full-field wind generator integrated with the vertical twin rotors

Abstract

This research aims to develop a full-field wind generator integrated with a vertical twin rotor that the applied generator uses a variable normal rated power and driven by a vertical twin rotor. This developed windmill is with a complex structure which combines both Savonius and Darrieus blades. During the working process, the Savonius blade is driven by a slower wind speed and promotes the Darrieus blade to reduce its starting wind speed. The Darrieus blade then drives the electric generator. Rotation of the two blades will be separated in a high speed wind field to reduce the wind resistance of the windmill. The efficiency of multi-layer magnetic electric machine can achieve to 84% at 200 rpm, 81.1% at 300 rpm, even 80% at 400–900 rpm. Also, the automatic control load has a better efficiency which is a 3% difference compared with the fixed load operation and the maximum efficiency can be up to 19.11%.