Cooling rib direct driven permanent magnetic synchronous single bearing aerogenerator

Abstract

The invention provides a radiating rib direct driving permanent magnet synchronous single bearing anemo-electric generator, comprising an end sheet (1), a frame (2), a stator (3), a rotor (5) and an end closure (6), wherein, the frame (2) is connected with the end sheet (1), the stator (3) is fixed inside the frame (2). The invention is characterized in that the outside circumference of the frame (2) is provided with a radiating rib (4), both the stator (3) and the rotor (5) consist of two concentric cylinders, the two corresponding surfaces are respectively provided with a winding and a permanent magnet, the rotor (5) which rotates corresponding to the stator (3) is closely fixed on the outer lane of a bearing (8), the inner lane of the bearing (8) is connected with a taper support (7) which is connected with the end sheet (1), the lateral surface of the bearing (8) positioned on the blower hub side is connected with an arrester (9). The invention has simple and compact structure, good radiating effect, high efficiency and convenient transportation and installation.

Description

technical field [0001] The invention relates to a permanent-magnet synchronous wind-driven generator, in particular to a heat-dissipating rib direct-drive permanent-magnet synchronous single-bearing wind-driven generator. Background technique [0002] The direct-drive permanent magnet generators developed by various motor manufacturers at home and abroad, after actual operation, although some have been connected to the grid for power generation, the operation is still unstable, and the reliability needs to be further verified and improved. There are still a lot of problems in heat dissipation analysis, support structure, etc., which make the performance index of the motor low, the temperature rise unpredictable, the control characteristics are not good, and the motor is too heavy, which is very inconvenient for transportation and hoisting, and it is very easy to cause mechanical deformation during the hoisting process . For example, the 1.2MW dir...

AI Technical Summary

Problems solved by technology

[0002] The direct-drive permanent magnet generators developed by various motor manufacturers at home and abroad, after actual operation, although some have been connected to the grid for power generation, the operation is still unstable, and the reliability needs to be further verified and improved. There are still a lot of problems in heat dissipation analysis, support structure, etc., which make the performance index of the motor low, the temperature rise unpredictable, the control characteristics are not good, and the motor is too heavy, which is very inconvenient for transportation and hoisting, and it is very easy to cause mechanical deformation during the hoisting process

For example, the 1.2MW direct-drive permanent magnet generator produced by Vensys in Germany and imported by a company in my country adopts the structure of outer rotor and inner stator. Although the operating efficiency is high, its own heat dissipation capacity is very poor, and internal auxiliary ventilation is required. heat dissipation in order to function properly

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