Multi-part type electric field excitation biconvex pole wind power generator

Abstract

The invention relates to a multi-body typed electrical excitation wind power generator with double salient poles, belonging to the wind power generator, which is characterized in that the armature windings of each monomer electrical excitation wind power generator with double salient poles are connected in series or in parallel; the voltage is outputted through a single-phase rectifier bridge; when the wind speed is low, the armature windings of each monomer wind power generator are connected in series with a reversed-phase; when the wind speed is high, the armature windings of each monomer wind power generator are connected in parallel with the reversed phase; a plurality of ten degree axial direction mechanical angles are positioned among the staggered generators, which are connected into the multi-body typed electrical excitation wind power generator with double salient poles; the monomer electrical excitation wind power generator with double salient poles comprises a stator, a rotor, an armature winding, an excitation winding; wherein, the rotor is an outer rotor or an inner rotor; the armature windings on the stator refer to the one phase winding formed by the armature windings with the opposite gear on the stator connected in series, which forms the electrical excitation wind power generator with double salient poles and two phase windings of A and B. The generator has the advantages of large power, wide rotational speed range, and high efficiency, which can meet the needs of the wind power generators with high power.

Description

technical field [0001] The invention relates to a novel electric excitation double salient pole wind power generator structure technology, in particular to a novel electric excitation double salient pole wind power generator with low speed, high efficiency, wide speed range and load adaptability of a multi-body structure. Background technique [0002] At present, due to the low speed of wind turbines in large-scale direct-drive wind turbines, most wind turbines use permanent magnet motors and asynchronous motors with multi-pole special structures. The diameter of the wind turbine increases, especially in high-power occasions, and the cross-sectional area of ​​the multi-pole wind turbine increases, which affects the air duct of the wind turbine. In addition, the high-power direct-drive wind turbine is required to have a wide speed range and be able to adapt to different load requirements due to the influence of highly random wind speed and load. The existing high-power wind ...

AI Technical Summary

Problems solved by technology

In order to solve the problem of excessive radial size of the motor, in the wind turbine nacelle where the gearbox is omitted, the most effective way is to increase the axial size of the motor to reduce the radial size and maintain the rated power of the motor. Efficiency in each load state, the concept of distributed motor structure is proposed, that is, a multi-body structure is adopted, and more than one generator is mechanically connected in series on the shaft of the wind turbine. According to the requirements of load and wind speed, each motor can be independent It can also work in series and parallel with each other, so that each motor can work at the maximum load point, improve the operating efficiency of the single motor, and the operating efficiency of the whole machine can also be effectively improved

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