| 摘要 |
A method of controlling a water current turbine 1 which includes a rotor assembly 10 arranged to drive a generator 12 includes adjusting the electrical torque of the generator to control only the output power of the generator. The turbine may include a measurement unit 14 which supplies rotor or generator speed signals to a control unit 16. The control unit 16 may comprise a control processor 18 which receives the speed signals Ï and required power information P to produce a required generator torque signal Q which is passed to a control signal output unit 20. The control signal output unit 20 converts the required torque value into generator control signals. A rotor without variable pitch blades can be controlled to maintain a desired power output level simply by controlling the electrical torque of the generator in dependence upon measured rotational speed, therefore providing robust and responsive open loop control. |
