JP3054811U - DC generator for wind turbine - Google Patents

Abstract

(57) [Summary] [Purpose] The present invention relates to a DC generator of a wind turbine or a water turbine, and has a small starting torque and can suppress vibration during operation. [Configuration] FIG. 1 shows a front view of a wind turbine. 1 denotes a wind turbine blade, 2 denotes a hub, 3 denotes a bearing, 4 denotes a column, 5 denotes a tail, 6 denotes a power shaft, 7 denotes a gearbox, 8 denotes a rotor, and 9 denotes a coil.

Description

[Detailed description of the invention]

[0001]

[Industrial applications]

 This invention can be used as a DC generator for wind turbines or water turbines.

[0002]

[Prior art]

 Conventionally, an alternator has been mainly used as a generator for a windmill or a water turbine. Therefore, in order to synchronize the number of magnetic poles of the rotor 8 and the number of the coils 9, the number of the magnetic poles is combined by a number divisible by an integer.

[0003]

[Issues to be solved by the invention]

 Powered machines obtained from windmills or watermills are required to stand up from small forces. In the conventional generator, the starting torque was large due to the synchronization of the suction force. This tendency was particularly noticeable when the gearbox was inserted. At the same time, this means that the rotation torque fluctuates during one rotation, which is a cause of vibration during operation.

[0004]

[Means for Solving the Problems]

 The number of poles n of the rotor 8 connected to the power shaft 6 of the wind turbine or the water turbine and the number of coils 9 arranged around the rotor 8 are set to numbers at which the suction force is not synchronized.

[0005]

[Action]

 The generator having the rotor 8 and the coil 9 arranged so as not to be synchronized with each other has a small starting torque. The generated power can be rectified and combined so that it can be directly supplied to a battery or the like for charging. By arranging the coils so that the attraction of each coil is not synchronized, the generation of vibration during operation is suppressed.

[0006]

[Example of the invention]

 FIG. 1 shows a wind turbine. The wind turbine includes a blade 1, a hub 2, a power shaft 6 directly connected to the hub 2, a gearbox 7, a bearing 3, a support 4, and a tail 5. The rotor 8 of the DC generator is mounted on the output shaft of the gearbox 7, and the coil 9 is mounted on the main body of the gearbox 7. The electric power generated in the coil 9 is output from the rectifier circuit connected to the coil 9 and is synthesized. In the synthesis, the rotation speed of the power shaft 6 is detected, and considering the performance of the blades and the performance of the generator such as the coil 9, the core, and the magnet, the combination can be performed in series or in parallel according to the rotation speed.

[0007]

[Effect of the invention]

 According to this invention, DC power can be efficiently obtained from a low rotation to a high rotation by using a wind turbine or a water turbine. Also, vibration during operation can be suppressed.

[Brief description of the drawings]

FIG. 1 is a front view of the present invention.

[Explanation of symbols]

 1 is a wing 2 is a hub 3 is a bearing 4 is a column 5 is a tail 6 is a power shaft 7 is a gearbox 8 is a rotor 9 is a coil

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ Identification code FI H02K 21/12 H02K 21/12 G

Claims (1)

[Utility model registration claims] 1. A rotor 8 having a magnet or a magnetized rotor 8 having four or more poles n is rotated by directly connecting to a power shaft 6 of a wind turbine or a water turbine or by connecting a gearbox 7. 2. At least three or more coils 9 are arranged on the inner and outer sides or side surfaces of the rotor 8 so that the number of poles n cannot be divided by an integer. 3. A rectifier is connected to the output side of each coil 9. As described above, a DC generator for a windmill or a water turbine is configured.