WIND TURBINE

摘要

A vertical axis wind turbine system is provided that converts wind energy into electrical or mechanical energy. The turbine comprises at least one turbine rotor with a plurality of curved blades for receiving head-on wind generated airflow. Shield means mountable around at least a portion of the rotor serve to protect the upstream-moving blades from head-on wind airflow and thereby reduce drag. In one embodiment, load compensation means are provided to adjust the moment of inertia of the turbine rotor. One or more of the turbine rotor blades is hollow and defines a closed volume for holding a fluid, the fluid being displaceable in use through baffle means towards or away from the vertical axis of the rotor as the rotational velocity of the rotor changes.

主权项

1. A vertical axis wind turbine system that converts wind energy into electrical or mechanical energy comprising:
at least one turbine rotor with a plurality of blades for receiving head-on wind generated airflow, at least some of the blades moving in a downstream wind direction and some of the blades moving in a return upwind direction as the rotor rotates; a rotor support structure mountable to a base or support for holding the at least one rotor in the wind generated airflow; and wind shield means mountable upwind of at least a portion of the rotor to protect the return blades from head-on wind airflow.