Variable speed variable frequency pneumatic electric machine and excitation control system

An excitation control and wind turbine technology, applied in the control system, wind turbine control, wind turbine combination, etc., can solve the problems of poor working conditions, unreachable conditions, and frequent gearbox failures of wind turbines.

Inactive Publication Date: 2010-05-26
宝丽恒通(天津)科技股份有限公司
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  • Abstract
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  • 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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  • Variable speed variable frequency pneumatic electric machine and excitation control system
  • Variable speed variable frequency pneumatic electric machine and excitation control system
  • Variable speed variable frequency pneumatic electric machine and excitation control system

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Embodiment Construction

[0045] The specific embodiments, structures, features, and effects of the present invention will be described in detail below with reference to the accompanying drawings and preferred embodiments.

[0046] Such as Figure 1-4 As shown, a variable speed variable frequency wind motor M includes a generator main body 1 fixed on a base 10, a generator stator 16 is fixed in a motor housing 111, and a generator rotor 14 is opposite to the stator 16 through a main drive shaft 13 Rotating construction settings, where,

[0047] The exciter 4 is coaxially mounted in series with the generator body through the main drive shaft in the casing; the permanent magnet 43 is mounted 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 configured to rotate relative to the exciter inner rotor 45 through the connecting piece 46; the permanent magnets 43 are arranged in groups according to the conve...

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Abstract

A variable speed and variable frequency wind-driven motor is prepared as series-connecting exciter with generator main body coaxially in shell through master driving shaft of master wind wheel, setting permanent magnet external rotor and exciter internal rotor to be relatively rotating mode, setting rotary speed measurement units on master wind wheel and wind sub-wheel for transmitting rotary speed signals to control unit, connecting yawer to central control unit of machine set, setting blade pitch regulation mechanism on master wind wheel and wind sub-wheel and connecting said mechanisms to control unit.

Description

Technical field [0001] The invention relates to a wind generator, in particular to a double-rotor wind generator with series permanent magnet variable speed variable frequency excitation and its excitation control system and its excitation control mode. Background technique [0002] The prior art, such as Chinese patent CN200510022771.1, discloses a variable-speed variable frequency method for wind power generation. Its characteristic is that the speed of the wind turbine rotor is increased through a speed-increasing gearbox, and then the input power generated by the variable speed is input into the differential permanent The input shaft of the magneto is divided or combined by the differential mechanism of the differential permanent magnet motor to generate power flow into the stator winding of the differential permanent magnet motor to achieve constant speed variable frequency power generation to the grid through the feeder to improve the power generation efficiency of the power...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K19/38H02K21/00H02K7/18H02P9/04H02P9/14H02J3/38F03D9/00F03D7/00F03D9/25F03D15/00
CPCY02E10/763Y02E10/723Y02E10/725Y02E10/72Y02E10/76
Inventor 王华君
Owner 宝丽恒通(天津)科技股份有限公司
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