| 摘要 |
<p>A turbine array 2 comprises a plurality of turbines 4 and an electrical machine connected to each of the turbines, and to an electrical grid. At least one of the electrical machines is a motor-generator which can operate in a motor mode or a generator mode, and the other electrical machines are at least generators. When a controller 10 detects a loss-of-grid event it sets the motor-generator to the motor mode, the motor-generator being driven by the generators and thereby providing a load to the generators. The controller may set the motor-generator to the motor mode by adjusting the blade pitch of its turbine. The turbines may be ganged together in banks, each bank containing at least one motor-generator and at least one generator. Each bank may include a transformer. The turbine array is a tidal or tidal stream turbine array.</p> |
