| 摘要 |
<p>A wind or water powered turbine system uses two or more turbines which each have a diameter smaller than a single turbine sweeping the same equivalent area. The rotational speed of each turbine of the turbine system is therefore higher than a single turbine of equivalent power, so the total volume of electrical generators will be smaller, assuming they are directly driven. Each of the turbines can be mounted within a duct and the ducts can be arranged around a central point. The turbines may be arranged around a single generator, and may be coupled to the generator shaft via a belt or chain drive 103. Two or more turbines may be electrically or mechanically connected in series at low speeds and in parallel at high speeds.</p> |
