Rotor and electric generator

Abstract

A rotor for an electrical generator and a generator incorporating such a rotor, the rotor consisting of a central hub, a radially spaced concentric rim portion with rotor magnetic elements mounted upon it, and a plurality of elongate tension members extending generally between the hub and the rim, maintained substantially in tension so as to maintain the rim substantially in compression. The hub is rotatably driven by an axially spaced power drive means such as a wind or marine current turbine.

Description

technical field [0001] The present invention relates to a rotor of a generator and a generator equipped with the rotor, more specifically, to a rotor of a low-speed generator and a low-speed generator equipped with the rotor, that is to say, a power generator A machine in which a driving force is applied to a power mechanism, especially a rotating power mechanism, such as a turbomachine, and coupled to it, the rotor is turned by a direct drive or through a low-ratio transmission. Background technique [0002] The present invention relates in particular to large wind turbine generators and marine tidal current turbine generator installations and discusses the prior art and especially some embodiments of the invention presented previously. However, it will be believed that the invention has potential use in generators generally where the rotor is subjected to high torques. [0003] Initially, most industrial wind turbines used generators retrofitted with general-purpose induc...

AI Technical Summary

Problems solved by technology

[0015] While such a configuration has high peripheral speeds relative to a conventional equivalent direct drive design, the combined extremely large configuration would make some of the above problems worse and produce it in terms of the associated benefits of high peripheral speeds Some problems of its own, so it cannot play or provide some other benefits recognized by traditional direct drive designs (such as using two or three blades)

[0016] The bulky iron cores in traditionally designed direct drive generators can also be enough to make some problems worse, notably weight, efficiency losses, magnetic forces during assembly, and air gap forces

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