Facility for producing electricity comprising a plurality of electrical production devices capable of transforming mechanical energy into electrical energy

Abstract

This electricity producing installation includes electricity producing devices at least partly immersed in water, each electricity producing device comprising a rotary mechanical receiver and an alternator comprising at least one rotor and at least one stator, a rotor of the alternator being able to be set into rotation by the rotary mechanical receiver. Each electricity producing device produces an electric AC signal with variable voltage and frequency conveyed by an at least partly immersed electric transport cable. The installation further comprises an interconnection device to which are connected at the input in parallel electric transport cables and which provide at the output a joint electric signal with variable frequency and voltage, the current amplitude of which is equal to the sum of the input currents. A partly immersed export cable connects the output of the interconnection device to a power conversion device out of the water, this power conversion device being capable of transforming the joint electric signal to an electric AC signal with set frequency intended for an electricity distribution or transport network.

Description

technical field [0001] The present application relates to a power generation facility comprising a plurality of power generating devices capable of converting mechanical energy into electrical energy. [0002] The present application relates to the field of hydroelectric power generation, and in particular to hydroelectric power generation by means of generating electricity using the kinetic energy of ocean currents and being at least partially submerged in water or wind turbines placed at sea. Background technique [0003] Typically, tidal turbines consist of a variable speed turbine or mechanical receiver which can be placed in a flow of water (such as a flow or wave in a stream) and an alternator connected to the mechanical receiver. Rotating under the action of the alternator converts the mechanical power generated by the water flow into electrical power. An alternator generally includes a rotor and one or several stators. The rotor is mechanically connected to a turbin...

AI Technical Summary

Problems solved by technology

However, integrating a submerged or partially submerged power converter for each device used to generate electricity is expensive and restrictive, especially because such power converters require guaranteed sealing and increased reliability; Installing exposed power converters at machinery is not acceptable to the public (visual impact) or authorities (navigation and fishing restrictions, hazards)

Furthermore, the maintenance of such submerge

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