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Wind power generating device

A technology for wind power generation devices and generators, applied in wind power generation, circuit devices, wind engines, etc., can solve problems such as difficult and highly versatile control, and achieve the effect of easy output and easy control

Inactive Publication Date: 2013-10-23
NIPPON DENSAN CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Also in this control method, it is difficult to perform highly versatile control

Method used

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  • Wind power generating device
  • Wind power generating device
  • Wind power generating device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0020] figure 1 It is a figure which shows the whole structure of the wind power generator 1 which concerns on one Embodiment of this invention. The wind power generator 1 includes a windmill 2, a generator 3, an AC-DC converter 41, a DC-DC converter 42, a power detection unit 43, a converter control unit 5, a storage battery 6, a converter stop unit 71, and an overcurrent protection unit. 72. The generator 3 has a rotating part 32 (refer to figure 2 ). The windmill 2 has a rotating shaft 21 . The rotating part 32 is connected to the rotating shaft 21 .

[0021] In the wind power generator 1, the wind turbine 2 is blown by the wind and rotated, so that the rotating part 32 of the generator 3 rotates. Thus, the kinetic energy generated by the windmill 2 is converted into electrical energy by the generator 3 . The generator 3 generates alternating current with a variable frequency according to the rotation speed of the windmill 2 . The alternating current output from the...

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PUM

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Abstract

A wind power generating device comprises: a windmill; a power generator; a DC-DC converter; a power detection unit for obtaining the output power from the DC-DC converter in a sampling period; and a converter control unit for controlling the duty ratio of the DC-DC converter. The converter control unit includes a duty ratio indication unit for indicating the duty ratio and a variation determination unit for selecting a positive first variation or a negative second variation as the variation of a duty ratio indication value from the duty ratio indication value corresponding to the previous sampling. When the absolute value of the first variation is smaller than the absolute value of the second variation, the variation determination unit selects, from the first and second variations, the variation having a sign equal to a reference sign that is the positive or negative sign of the variation of the duty ratio indication value corresponding to the previous sampling if the output power is greater than or equal to a reference power that is the output power obtained at the previous sampling time, and selects the variation having a sign different from the reference sign if the output power is smaller than the reference power.

Description

technical field [0001] The invention relates to a wind power generating device. Background technique [0002] Conventionally, in wind power generators, various controls have been performed in order to maximize the output. For example, in the wind power generation equipment described in Japanese Patent Laid-Open No. 2006-149055, the correlation between the output power of the voltage conversion device 3 and the output voltage of the wind power generator 2 is preset in the control circuit 8 when the maximum power is obtained. characteristic data. For the characteristic data, the output power of the voltage conversion device 3 and the output voltage of the wind turbine 2 are shown stepwise on a curve connecting the maximum power point (paragraph 0018 ). In this wind power generation facility, the output voltage of the wind power generator 2 and the output power of the voltage conversion device 3 are measured. Then, the falling current value is calculated. The reduced curren...

Claims

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Application Information

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IPC IPC(8): H02P9/00F03D9/00F03D9/20F03D9/25
CPCH02J7/1492Y02E10/725H02J1/102H02P9/48F03D9/002F03D9/25Y02P90/50F03D9/11Y02E10/72Y02E70/30
Inventor 野田学藤田淳里基·艾尔森梶信藤
Owner NIPPON DENSAN CORP