Wind power generation system and control method thereof
A technology of wind power generation system and power system, which is applied in the control of wind power generators, wind power generation, wind power generators, etc. It can solve the problems of reducing power generation and setting energy consumption circuits in the DC part, so as to prevent overvoltage or overcurrent Effect
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0084] use Figure 1 to Figure 8 The configuration of the wind power generation system of the present invention will be described. figure 1Indicates the overall structure of the wind power generation system. figure 1 The wind power generation system shown receives wind force from the blades 11 and converts the wind energy into rotational energy. The rotation enables rotation of a hub 12 to which the blades are attached. In addition, the rotating part including the blade 11 and the hub 12 is called a rotor 1 (rotor). The rotation of the wind wheel 1 is transmitted to the speed-up gear 22 via the shaft 21 . The speed-up gear 22 converts the rotational speed of the rotating member 1 into a rotational speed suitable for the generator. figure 1 In the figure, the permanent magnet type generator 23 is shown as a generator.
[0085] Next, the configuration of the control system during power generation operation of the wind power generation system will be schematically described....
Embodiment 2
[0140] use Figure 10A second embodiment of the present invention will be described. The difference from Embodiment 1 lies in the transition conditions of the operation mode transition between the system-side power converter 283 and the generator-side power converter 281 . In this embodiment, the system voltage is compared with the generator voltage (processes 1005, 1020). When the system voltage drops due to the influence of a system accident, the generator voltage may be higher than the system voltage. At this time, the operation modes of the system-side power converter 283 and the generator-side power converter 281 are handled in such a manner ( After processing 1007, 1021). However, sometimes the system voltage appears to be temporarily low due to the noise of the detection signal, so after processing 1005 or 1020 for a certain period of time (processing 1008, 1022), the operation mode of the power converter is shifted (in this embodiment 0.5s in the middle).
Embodiment 3
[0142] use Figure 11 A third embodiment of the present invention will be described. The difference from Embodiments 1 and 2 lies in the transition conditions of the operation mode transitions of the system-side power converter 283 and the generator-side power converter 281 . In this embodiment, due to the influence of system failure or machine failure, etc., the DC voltage control of the power converter 283 on the system side stops working. When the DC voltage is lower than the specified voltage (1050V in this embodiment), and as long as the generator If the voltage is equal to or higher than the predetermined voltage (processing 1105, 1120), processing is performed so as to transition the operation modes of the system side power converter 283 and the generator side power converter 281 (processing 1107, 1121 and later). However, sometimes the DC voltage or the generator voltage cannot be correctly detected temporarily due to the noise of the detection signal, etc. Therefore,...
PUM
Login to View More Abstract
Description
Claims
Application Information
Login to View More