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Electrical control of wind generator set

A technology of wind power generators and electrical control, applied in the direction of control of generators, electrical components, control systems, etc., can solve the problems of high investment costs, and the control system effect of variable speed power generation is not very good, etc., to achieve low cost and good control Effect

Inactive Publication Date: 2008-06-25
苏州市南极风能源设备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The development of renewable green new energy is one of the most important and urgent tasks in the world and our country. Wind power generation is one of the most practical and popularized, which has attracted great attention. Wind power generation involves aerodynamics, machinery, In many technical fields of motor and control, the characteristics and application occasions of constant speed power generation (rigid power generation) and variable speed power generation (elastic power generation), the control system effect of variable speed power generation is generally not very good, and the investment cost is too high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0007] The alternating current whose frequency and voltage output by the synchronous motor change with the rotating speed is connected to the constant voltage and constant frequency (50Hz) power grid through a single-quadrant IGBT voltage type AC-DC-AC inverter, and all the electric power generated by the motor passes through the inverter. The capacity of the frequency converter needs to be selected according to 100% power, which is larger than the double-fed system, and the investment and loss are large, and harmonic absorption is troublesome.

[0008] The stator of the wound asynchronous machine in double-fed system is directly connected to the grid, and the rotor is connected to the grid through a four-quadrant IGBT voltage type AC-DC-AC converter. The rotor voltage and frequency are proportional to the motor slip rate, which changes with the speed change. The slip power of the slip frequency is transformed into the slip power of constant voltage and constant frequency (50Hz...

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PUM

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Abstract

The invention provides an electrical control method of a wind generator set, which includes a generator and a control system. The invention is characterized in that direction online power generation by a synchronous generator, a double-fed power generating system based on a wound-rotor asynchronous motor, and a blade obliquity controlling system are adopted, a conic rotor generator set (flexible power generation) is adopted, the double-fed power generating system is adopted, good control is implemented, and the cost is 30 percent lower than that of the common method.

Description

technical field [0001] The invention relates to an electrical control method of a generating set, in particular to an electrical control method of a wind generating set. Background technique [0002] The development of renewable green new energy is one of the most important and urgent tasks in the world and our country. Wind power generation is one of the most practical and popularized, which has attracted great attention. Wind power generation involves aerodynamics, machinery, In many technical fields of motor and control, the characteristics and application occasions of constant speed power generation (rigid power generation) and variable speed power generation (elastic power generation), the control system effect of variable speed power generation is generally not very good, and the investment cost is too high. Contents of the invention [0003] Aiming at the defects of the prior art, the present invention provides a practical method for electrical control of a wind pow...

Claims

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Application Information

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IPC IPC(8): H02P9/00H02P9/04H02P9/42
Inventor 朱以人吴纯远
Owner 苏州市南极风能源设备有限公司