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Double-stator wind driven generator and power generation system

A technology of wind turbines and double stators, applied in wind power generation, electrical components, electromechanical devices, etc., to achieve the effects of enhanced low-voltage ride-through capability, reduced complexity, and improved power density and torque density

Active Publication Date: 2020-04-07
山东同其智能科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the requirement in the existing wind power generation technology that the generator must have low-voltage ride-through capability for grid-connected operation during grid failure, this invention combines the advantages of permanent magnet synchronous generator and doubly-fed generator, and proposes a single-machine A double-stator wind turbine that can generate electricity, reduce the excitation capacity of the rotor-side converter, simplify the wind power control system, and improve the low-voltage ride-through capability of the generator

Method used

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  • Double-stator wind driven generator and power generation system
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  • Double-stator wind driven generator and power generation system

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Embodiment Construction

[0030] In order to make the purpose, features and advantages of the present invention more obvious and understandable, the technical solutions protected by the present invention will be clearly and completely described below using specific embodiments and accompanying drawings. Obviously, the implementation described below Examples are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in this patent, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of this patent.

[0031] This embodiment provides a double-stator wind power generator, such as figure 1 and figure 2 As shown, it includes: a casing 1, the casing 1 is provided with a first end cover 13 and a second end cover 19; the first end cover 13 and the second end cover 19 are respectively provided with two fixing holes, and the fixing holes The inner sleeve of the hole wall is provided with bear...

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Abstract

The invention discloses a double-stator wind driven generator and a power generation system. The double-stator wind driven generator sequentially comprises a rotating shaft, an inner stator, a wound rotor, a permanent magnet rotor and an outer stator from inside to outside. A first air gap is formed between the inner stator and the wound rotor, a second air gap is formed between the wound rotor and the permanent magnet rotor, and a third air gap is formed between the permanent magnet rotor and the outer stator. The outer stator and the permanent magnet rotor form an outer permanent magnet synchronous motor, and the inner stator, the winding rotor and the permanent magnet rotor form an inner permanent magnet doubly-fed motor. The invention has the advantages of compact structure and high power generation capacity, and can obviously improve the low-voltage ride-through capability of the wind power generation system, improve the stable operation performance of the power generation systemand reduce the complexity of the wind power control system especially in the power grid fault period.

Description

technical field [0001] The invention relates to a wind power generator, in particular to a double-stator wind power generator. Background technique [0002] The variable speed constant frequency double-fed wind turbine stator is connected to the power grid, the generator rotor and the wind turbine are coaxially connected, the rotor winding adopts a winding structure, and the rotor winding is connected to the power grid through a converter with bidirectional energy flow to adjust the amplitude of the rotor excitation current. Value, frequency, phase and other parameters to achieve constant frequency and constant voltage output on the stator side of the generator when the wind speed changes, while the rotor side inputs or outputs energy through a bidirectional converter according to different operating conditions to achieve variable speed and constant frequency. Feed and grid operation. The double-fed generator can keep the output voltage and frequency of the stator side unch...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K16/00H02J3/38H02J3/50
CPCH02J3/50H02K16/00H02K2201/03Y02E10/76
Inventor 刁统山严志国杨敏
Owner 山东同其智能科技有限公司
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