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Halting method and system for fan in extreme state

An extreme state, wind turbine technology, applied in the control of wind turbines, wind turbines, machines/engines, etc., can solve problems such as wind turbine structure damage

Active Publication Date: 2016-11-16
SANY ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in actual work, this full-speed propeller retraction method is not ideal, and the pitch system will experience a large extreme load, and even cause structural damage to the fan

Method used

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  • Halting method and system for fan in extreme state
  • Halting method and system for fan in extreme state
  • Halting method and system for fan in extreme state

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Embodiment Construction

[0044] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. The components of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations. Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts belong to the protection scope of the present invention.

[0045] There are two ways to stop the fan from the n...

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Abstract

The invention provides a halting method and system for a fan in an extreme state, and relates to the field of fan control. The method provided by the invention comprises the steps that a paddle collecton speed changing manner is adopted, before gust halt, firstly, a pitch angle of a wind wheel is adjusted at a high paddle collecton speed, so as to avoid the problem that the wind wheel overspeeds; and then, the pitch angle of the wind wheel is adjusted at a low paddle collecton speed, so as to avoid the problem that the overall mechanical load of the fan is too large. Through the adoption of the control method, the fan can avoid the situation that the fan overspeeds and flies and the situation that the fan structure breaks due to the fact that the mechanical load of the fan is too large at the same time, and the safety of the fan during the gust halt process is improved.

Description

technical field [0001] The invention relates to the field of fan control, in particular to a method and system for stopping a fan in an extreme state. Background technique [0002] Wind energy is a clean energy source. With the aggravation of energy shortage and environmental pollution, wind generators, which can convert wind energy into electrical energy, have attracted more and more attention. [0003] Since the wind speed and direction of the wind are always changing, the normal operation of the fan requires the control of two systems, the two systems are the pitch system and the yaw system. When working, the main function of the pitch system is to adjust the pitch angle of the wind rotor blades based on the wind speed, thereby adjusting the efficiency of the blades in converting wind energy into mechanical energy and affecting the power generation; the yaw system is to adjust the orientation of the wind rotor so that the wind rotor can always be aligned with the wind di...

Claims

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Application Information

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IPC IPC(8): F03D7/00
CPCF03D7/00F05B2270/327F05B2270/328F05B2270/404Y02E10/72
Inventor 杜佳佳石文兵
Owner SANY ELECTRIC CO LTD
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