Tandem type wind electrical motor with dual rotors, and speed changing, frequency converting excitation system

A technology of excitation control and wind turbines, applied in the control of wind turbines, wind power generation, control of mechanical energy, etc., can solve problems such as high maintenance costs, poor working conditions and environment of wind turbines, and low speed of wind rotors

Inactive Publication Date: 2009-09-02
天津市新源电气科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] It is known that wind turbines transmit the power generated by the wind wheel under the action of wind to the generator through the gearbox and make it obtain a corresponding speed; usually the speed of the wind wheel is very low, far below the requirements for high-speed generator power generation The speed must be realized through the acceleration of the gear pair of the gearbox; and the working conditions of the wind turbine unit are generally very poor, and frequent failures of the gearbox are common.
[0005] Products manufactured by conventional technologies have poor reliability, high maintenance costs, and low unit efficiency

Method used

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  • Tandem type wind electrical motor with dual rotors, and speed changing, frequency converting excitation system
  • Tandem type wind electrical motor with dual rotors, and speed changing, frequency converting excitation system
  • Tandem type wind electrical motor with dual rotors, and speed changing, frequency converting excitation system

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Embodiment Construction

[0032] The specific implementation, structure, features and effects provided by the present invention will be described in detail below in conjunction with the accompanying drawings and preferred embodiments.

[0033] Such as Figure 1-4 As shown, a series double-rotor wind motor M includes a generator main body 1 fixed on a base 10, a generator stator 16 fixed in a motor casing 11, the motor casing 11 has an end cover 111, and the generator The rotor 14 is configured to rotate relative to the stator 16 through the main transmission shaft 13, wherein,

[0034] The exciter 4 is coaxially installed in the casing through the main transmission shaft and the main body of the generator; the permanent magnet 43 is installed on the yoke 42 in the permanent magnet outer rotor housing 410 to form the permanent magnet outer rotor 41 of the exciter. The permanent magnet outer rotor is set in a structure that is relatively rotating with the exciter inner rotor 45 through the connecting pi...

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Abstract

The present invention relates to a series-connected double-rotor wind-driven machine and its variable-speed variable-frequency excitation system. It is characterized by that it includes the following several portions: field exciter, main wind wheel, auxiliary wind wheel, main drive shaft of main wind wheel, auxiliary drive shaft of auxiliary wind wheel, rotating speed measuring device of main wind wheel, rotating speed measuring device of auxiliary wind wheel, unit control device, generator stator, generator rotor, rotary permanent magnetic external rotor, variable paddle pitch regulation mechanism of main wind wheel and variable paddle pitch regulation mechanism. Said invention utilizes its double-rotor structure to implement unit variable-speed and variable-frequency operation.

Description

technical field [0001] The invention relates to a wind power generator, in particular to an excitation control system with a series permanent magnet variable-speed variable-frequency excitation dual-rotor wind generator. Background technique [0002] The known technology such as Chinese patent CN200510022771.1 discloses a variable speed and frequency conversion method for wind power generation. The input shaft of the magneto is divided or merged by the differential mechanism of the differential permanent magnet motor to generate power flow into the stator winding of the differential permanent magnet motor and through the feeder to the power grid to achieve constant speed variable frequency power generation to improve the power generation efficiency of the power generation system . [0003] Another example is Chinese patent CN200410003089.3 which discloses a MW level direct drive permanent magnet outer rotor synchronous wind generator, which adopts a multi-pole outer rotor s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F03D7/04H02K16/02H02K7/14
CPCY02E10/723Y02E10/72
Inventor 王华君
Owner 天津市新源电气科技有限公司
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