Multi-wind wheel wind electric machine set and control method thereof

A technology for wind turbines and multiple wind turbines, applied in the control of wind turbines, wind power generation, control systems, etc., can solve the problems of inability to meet the power energy for production and construction, increase construction and transmission costs, and reduce power grid stability. Reduce the number of computers and other information processing equipment, achieve constant frequency power output, and reduce monitoring costs

Inactive Publication Date: 2007-08-22
INST OF AUTOMATION CHINESE ACAD OF SCI
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Problems solved by technology

Moreover, due to changes in wind speed and direction, the rotor speed often changes and the output power changes, which may easily cause grid-connected shocks and reduce the stability of the grid. Large-scale wind farms are often far away from cities, and they are used for long-distance power transmission to power-intensive areas. It will cause power loss, increase construction and transmission costs, reduce efficiency, and increase energy consumption
On the other hand, the small wind power generators that provide domestic electricity for scattered herdsmen have a power of only tens or hundreds of kilowatts, which can only meet the needs of lighting and small household appliances, and cannot meet the needs of power energy for production and construction, etc. , with defects

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  • Multi-wind wheel wind electric machine set and control method thereof

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[0023] Generally speaking, due to the unstable and uncertain factors of energy output, there are shocks in the process of connecting wind turbines to the grid, and the increase of the unit capacity of the wind turbine makes the impact of the shock more obvious. Excessive inrush current will not only reduce the reliability and life of the wind turbine system, but also seriously affect the power supply quality and stability of the power grid. Controlling and adjusting the stability of energy output and realizing smooth grid connection are one of the core technologies of modern wind energy utilization technology . The control method of multi-wind turbine wind turbines, through the sensor network and remote control, uses the speed control before grid connection and the power control after grid connection to improve the reliability and operation efficiency of wind turbines connected to the grid, and reduce the impact on the grid and power generation. The impact of wind turbines, so...

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Abstract

A method for controlling motor set with multiple wind wheel includes collecting information of air-stream, rotary speed, voltage and load on site and transmitting them to remote computer; calculating out wind ward angle and optimum pitch of blade to obtain optimum operation mode by remote computer based on said information; sending parameter of obtained mode to local computer; commanding relevant execution mechanism to regulate pitch angle of blade and windward angle of said motor set by local computer fro making said motor set be on optimum power-generation state. The device for realizing said method is also disclosed.

Description

technical field [0001] The invention relates to the technical field of wind power generation, and is a control method for a wind power device of a small wind turbine integrated with multiple wind wheels, which can make full use of clean, pollution-free and renewable wind energy, and provide efficient and reliable power for human production and life energy. Background technique [0002] At present, the application of wind power generation is mainly divided into two forms: one is the wind farm mode in which multiple grid-connected wind turbines are installed and arranged according to the terrain and the main wind direction in areas rich in wind resources to form units to supply power to the grid; the other is In the agricultural and herdsman areas, it is mainly used in the form of an independent, single small off-grid wind turbine for the electricity consumption of herdsmen. [0003] It is already known that areas rich in wind resources are usually located in remote areas or ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P9/04F03D7/00
CPCY02E10/723Y02E10/72
Inventor 王飞跃郭大蕾
Owner INST OF AUTOMATION CHINESE ACAD OF SCI
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