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Self-sealing brake device of permanent-magnet direct drive/semi-direct drive wind generating set

A technology of wind power generators and permanent magnet direct drive, which is applied to wind power generator components, DC motor deceleration devices, wind power engines, etc., and can solve problems such as increasing the body load, vicious damage to the generator, and increasing the length of the generator. Achieve the effects of reducing vulnerable points, safe and reliable use, and reducing manufacturing costs

Inactive Publication Date: 2011-07-27
山东鲁科风电设备有限公司 +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This hydraulic disc brake device has the following disadvantages: 1. The hydraulic brake device takes up space and increases the length of the generator. For the cantilever structure direct drive generator, the increase of the body load due to the length of the cantilever is increased; 2. There are many fault points in the device, which causes the wind turbine to stop due to failure; 3. The hydraulic brake device increases the manufacturing cost of the generator; 4. The hydraulic brake device is installed inside the permanent magnet generator, causing the hidden danger of malignant damage to the generator

Method used

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  • Self-sealing brake device of permanent-magnet direct drive/semi-direct drive wind generating set
  • Self-sealing brake device of permanent-magnet direct drive/semi-direct drive wind generating set
  • Self-sealing brake device of permanent-magnet direct drive/semi-direct drive wind generating set

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Embodiment Construction

[0009] Such as figure 1 , 2 as shown, figure 1 T in the present invention is the self-enclosed braking device of the permanent magnet direct drive / semi-direct drive wind power generator set, wherein figure 2 It is a circuit connection diagram of the present invention, wherein A, B, and C three phases are respectively connected to the K1 terminal. It includes contactor CJ, unloading resistors R1, R2, R3 and anti-parallel thyristors DG1, DG2, DG3, contactor CJ and anti-parallel thyristors DG1, DG2, DG3 are connected in parallel. The output end of the permanent magnet generator G is connected to a dual circuit breaker K, one end K2 of the dual circuit breaker K is connected to a power output device such as a converter PWM, and the other end K1 is connected to an input end of a contactor CJ. At the same time, the unloading resistors R1, R2, and R3 are connected in star connection to the output terminals of the contactor CJ and the antiparallel thyristors DG1, DG2, and DG3. Th...

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Abstract

The invention discloses a self-sealing brake device of a permanent-magnet direct drive / semi-direct drive wind generating set, which comprises a contactor, an unloading resistor and an anti-parallel thyristor, wherein the contactor is connected in parallel with the anti-parallel thyristor, the unloading resistor is connected with the output ends of the contactor and the anti-parallel thyristor in a star-shape connection mode, and the input end of the contactor is connected with the output end of a permanent-magnet generator through a two-way circuit breaker. The invention has the advantages that firstly, the installation of a hydraulic brake device is omitted so as to reduce the manufacture cost of the permanent-magnet generator; secondly, easily damaged points are decreased, and the use is safer and more reliable; and thirdly, electric arc can not be generated in starting / shutting down, thereby reducing damage to components and parts.

Description

technical field [0001] The invention relates to electric equipment, in particular to a self-enclosed braking device for a permanent magnet direct drive / semi direct drive wind power generating set. Background technique [0002] At present, the permanent magnet direct drive / semi-direct drive wind turbines at home and abroad all use hydraulic disc brakes, which are installed on the permanent magnet generator as the braking device for the wind turbine. This hydraulic disc brake device has the following disadvantages: 1. The hydraulic brake device takes up space and increases the length of the generator. For the cantilever structure direct drive generator, the body load is increased due to the length of the cantilever; 2. There are many fault points in the device, which causes the wind turbine to stop due to failure; 3. The hydraulic brake device increases the manufacturing cost of the generator; 4. The hydraulic brake device is installed inside the permanent magnet generator, ca...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F03D11/00H02P3/12F03D80/00
CPCY02E10/722Y02E10/72Y02P70/50
Inventor 于杰常文华小平侯文磊李洪生
Owner 山东鲁科风电设备有限公司
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