Method of controlling operating depth of an electricity-generati

Details Method of controlling operating depth of an electricity-generati Method of controlling operating depth of an electricity-generati

1999-01-12

2000-07-18

Ponomarenko, Nicholas

Prime-mover dynamo plants

Electric control

Fluid-current motors

290 54, 60398, 415 7, F03B 1310

Patent

active

060911611

ABSTRACT:
A method is described of controlling a tethered, underwater, water current-driven turbine, power-generating device. A predetermined maximum depth and a predetermined minimum depth are set. In response to sensing depth of the device, an ascend protocol or a descend protocol are selectively invoked. These protocols maintain an operating depth of the device that is midway between the predetermined maximum depth and the predetermined minimum depth. The turbine includes variable-pitch rotor blades. A maximum allowable drag force load on the turbine rotors is selected. The pitch of the variable-pitch rotor blades on the turbine is adjusted such that the drag force loading of the device does not exceed a maximum design level.

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