Lightning protection device of main bearing of generator of permanent magnet direct drive wind generating set
A technology for wind turbines and lightning protection devices, applied in the direction of electromechanical devices, electric components, and grounding devices, can solve problems such as main bearing damage, prolong service life, improve electrical conductivity, and ensure normal operation Effect
Active Publication Date: 2014-09-17
BEIJING GOLDWIND SCI & CREATION WINDPOWER EQUIP CO LTD
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Problems solved by technology
[0005] In order to solve the problem that the main bearing of the existing permanent magnet direct drive wind turbine is damaged during the lightning strike, the present invention proposes a lightning protection device, which prevents damage to the main bearing by establishing an independent lightning current discharge channel. bearing damage
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[0026] Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the exemplary embodiments set forth herein. In the drawings, the dimensions of parts may be exaggerated for clarity, and like reference numerals designate like parts throughout.
[0027] figure 1 is a front view showing the lightning protection device of the main bearing of the generator of the permanent magnet direct drive wind power generating set according to an exemplary embodiment of the present invention, figure 2 It is a side view showing the lightning protection device of the main bearing of the generator of the permanent magnet direct drive wind power generating set according to an exemplary embodiment of the present invention.
[0028] Such as figure 1 and figure 2 As shown in , according to an exemplary embodiment of ...
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The invention discloses a lightning protection device of a main bearing of a generator of a permanent magnet direct drive wind generating set. The lightning protection device comprises a circular tract which is fixed on a fixed shaft of a generator and a lightning protection brush which can slide on the circular tract. According to the permanent magnet direct drive wind generating set, an independent lightning current discharge channel is built and the main bearing of the generator is not passed, so that normal operation of the main bearing of the generator is effectively guaranteed, the service life of the main bearing of the generator is prolonged, and further normal operation of the permanent magnet direct drive wind generating set is guaranteed and the fault rate of the permanent magnet direct drive wind generating set is reduced; and simultaneously, the generating efficiency of the permanent magnet direct drive wind generating set is improved. In addition, according to the generating efficiency, the independent lightning current discharge channel is built, so that the electrical conductivity of the lightning current discharge channel is improved apparently.
Description
technical field [0001] The invention relates to a lightning protection device, more specifically, to a lightning protection device for preventing the main bearing of a generator of a permanent magnet direct drive wind power generating set from being damaged during a lightning strike. Background technique [0002] Permanent magnet direct drive wind turbines are usually installed in open areas or coastal areas with frequent thunderstorms. Since the permanent magnet direct drive wind turbine is a raised object, it is vulnerable to lightning strikes. The main bearing of the generator of the permanent magnet direct drive wind turbine carries the weight of the impeller and the generator. When struck by lightning, the main bearing of the generator also serves as the only way for the lightning current. In this case, if the generator If the main bearing of the wind turbine is damaged when struck by lightning, it will affect the operation of the entire permanent magnet direct drive w...
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IPC IPC(8): H02K11/00H02K11/40
Inventor 黄金鹏王延利张晓田锋
Owner BEIJING GOLDWIND SCI & CREATION WINDPOWER EQUIP CO LTD