| 摘要 |
<p>An apparatus for generating electrical power from a flow of water, including a housing having a water inlet and water outlet, a first turbine (12) mounted in the housing for rotation about a substantially vertical axis and having a turbine shaft, a set of vertical blades (22), and a blade angle control mechanism, a second turbine (14) mounted in the housing adjacent to the first turbine, for rotation about a substantially vertical axis, the second turbine having a turbine shaft, a set of vertical blades (22) and a blade angle control mechanism, the housing being adapted to be mounted within the body of water and being so configured that an incoming water flow enters the housing via the inlet, and is principally directed into two driving flows (34, 36), one for each turbine, and is then directed for discharge via the outlet, the angle of each blade with respect to the driving water flow is controlled by the blade angle control mechanism such that a large blade surface area is presented to the incoming water flow for driving the turbine in a predetermined direction of rotation and a low blade surface area is presented to the incoming water flow in a direction opposite to the driving direction.</p> |
