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Variable speed constant frequency wind-mill generator and its excitation control system and its control method

A variable speed, constant frequency, wind motor technology, applied in the control system, wind engine control, wind motor combination, etc., can solve the problems of low unit efficiency, poor reliability, frequent gearbox failures, etc.

Inactive Publication Date: 2007-07-18
国能联合动力技术(保定)有限公司
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  • Abstract
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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 known technologies have poor reliability, high maintenance costs, and low unit efficiency

Method used

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  • Variable speed constant frequency wind-mill generator and its excitation control system and its control method
  • Variable speed constant frequency wind-mill generator and its excitation control system and its control method
  • Variable speed constant frequency wind-mill generator and its excitation control system and its control method

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Embodiment Construction

[0057] 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.

[0058] As shown in Figures 1-4, a variable-speed constant-frequency wind motor M includes a generator body 1 fixed on a base 10, a generator stator 16 fixed in a motor casing 111, and a generator rotor 14 through the main drive. The shaft 13 is configured to rotate relative to the stator 16, wherein,

[0059] 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 piece 46; the permanent magnets 43 are arranged ...

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Abstract

A VSCF wind motor excitation control system relates to wind generator, especially the tandem permanent magnet excitation VSCF dual-rotor wind motor and the excitation control system, which includes a main motor. The exciter is installed in the shell in coaxial series with the main motor through the main shaft of main wind wheel. The permanent magnet is set in the magnetic yoke of permanent magnet outside rotor, to constitute the outside rotor of exciter. The exciter constitutes a relative rotating structure with the inside rotor through a connector and a rotating structure relative to the stator of motor. The deputy wind wheel constitutes a structure to drive the permanent magnet outside rotor on the deputy shaft. The deputy transmission shaft driven by the deputy wind wheel links the master transmission shaft driven by the master wind wheel coaxially in the way of mutual rotation.

Description

technical field [0001] The invention relates to a wind power generator, in particular to a double-rotor wind generator with series permanent magnet variable-speed constant-frequency excitation and its excitation control system and its excitation control mode. Background technique [0002] Known technology such as Chinese patent CN200510022771.1 discloses a variable-speed constant-frequency method for wind power generation, which is characterized in that first, the speed of the wind turbine rotor is increased through the speed-increasing gearbox, and then the input power generated by the variable speed is input into the differential The input shaft of the permanent magnet motor 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 through the feeder to realize constant speed and constant frequency power generation to the power grid, so as to improve...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K19/38H02K21/00H02K7/18H02P9/04H02P9/14H02J3/38F03D9/00F03D7/00F03D9/25
CPCY02E10/723Y02E10/725Y02E10/763Y02E10/72Y02E10/76
Inventor 王华君
Owner 国能联合动力技术(保定)有限公司
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