Direct-drive mixed-excitation type wind energy generator
A hybrid excitation and direct drive technology, applied in wind power generation, synchronous generators, electromechanical devices, etc., can solve the problems of fragile permanent magnets, large running resistance, and large power loss, and improve wind power conversion efficiency and efficiency. The effect of generating power, improving tensile strength and installation efficiency, reducing material usage and weight
Inactive Publication Date: 2010-02-24
于波
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Problems solved by technology
It overcomes the technical difficulties of the existing permanent magnet wind energy generators, which have large operating resistance caused by magnetic pull and large power loss, and overcomes the existing external rotor structure. Due to its own structural limitations, the permanent magnet generator cannot be installed with a ring type The technical difficulty of the damping winding makes up for the existing technical defects of the permanent magnet wind energy generator with the external rotor structure that the permanent magnet is difficult to fix and the permanent magnet is easily broken during operation.
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[0023] refer to figure 1 , figure 2 As shown in the structural diagram: 1. is the stator assembly; 2. is the rotor assembly; 4. is the casing; 5. is the exciter; 6. is the brake; 33. is the rotating shaft; End cover; 41, is an air-cooled radiator; 42, is a machine base; 43, is a machine cover; 50, is a voltage regulator.
[0024] refer to image 3 , Figure 4 As shown in the structural schematic diagram: 10, is the stator core; 14, is the stator winding.
[0025] refer to Figure 5 , Figure 6 As shown in the schematic diagram of the structure: 11, is a concentric stator punch; 12, is a welding slot; 13, is a stator slot.
[0026] refer to Figure 7 , Figure 8 The structural diagram shows: 3. is the end cover of the cylindrical rotor core; 20. is the rotor core; 25. is the rotor excitation winding; 28. is the damping guide bar; 29. is the damping guide ring; 30. is the cylindrical rotor Center keyway; 31, the central shaft hole with keyway in the center of the cyl...
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The invention relates to a direct-drive mixed-excitation type wind energy generator generating the electricity by the joint excitation of a permanent magnetic field and an electric field. The direct-drive mixed-excitation type wind energy generator can adjust the changes of voltage, can perform electric power generation synchronization, is specially provided with a loop type resistance winding toreduce step-out operations, and improves the smoothness and the impact resistance of the operation of the electric power generation synchronization. The direct-drive mixed-excitation type wind energygenerator has the advantages of no need of a gearbox speed increaser, light and handy structure, small starting resistance, large power generation power, obvious energy conservation, high wind energyconversion efficiency, high power density, few faults, low running and maintenance cost and low installation cost. The external part of a shell is provided with a radiator which plays a better radiating effect in the natural environment; and a machine base is provided with a rotator which sways along with the wind direction to improve the wind following efficiency of vanes and the wind energy utilization rate. The direct-drive mixed-excitation type wind energy generator breaks through the technical barrier that the prior permanent magnet wind energy generator has large power loss caused by large running resistance due to magnetic pull, overcomes the technical difficulties of the prior permanent magnet wind energy generator with an external rotor structure, and has a wide application prospect.
Description
Technical field: [0001] The direct-drive mixed-excitation wind energy generator of the invention belongs to the field of wind energy generators. technical background: [0002] The existing wind energy generators can be divided into two categories: one is the industrialized intermediate drive electromagnetic wind energy generators. The blades are installed on the low-speed shaft end of the gear box speed increaser, and the electromagnetic wind energy generator is installed on the high-speed shaft end of the gear box speed up box, and the wind energy drives the low speed of the blades to speed up from 10 to 30r / min to 1500r / min high speed and then drive the electromagnetic wind energy generator to generate electricity, which is an intermediate drive structure. There are technical defects such as large starting resistance, inability to generate electricity in the wind section with low wind speed, low wind power conversion efficiency, heavy, expensive gear box speed increaser,...
Claims
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IPC IPC(8): H02K19/38H02K7/10H02K21/02H02K1/16H02K1/26H02K21/04H02K1/27H02K5/20
CPCY02E10/725Y02E10/72
Inventor 于波
Owner 于波