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Double-rotor pneumatic electric machine and variable speed constant frequency excitation control system thereof

A technology of variable speed constant frequency and excitation control, which is applied in the control system, control of wind turbines, wind power generation, etc., can solve the problems of poor working conditions and environment of wind turbine units, low efficiency of units, and low speed of wind rotors, etc. Effects of operating efficiency and reliability, reducing control system cost, and improving wind energy utilization

Active Publication Date: 2007-06-06
天津市金天马电材电器有限公司 +1
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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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  • Double-rotor pneumatic electric machine and variable speed constant frequency excitation control system thereof
  • Double-rotor pneumatic electric machine and variable speed constant frequency excitation control system thereof
  • Double-rotor pneumatic electric machine and variable speed constant frequency excitation control system thereof

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Embodiment Construction

[0036] 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.

[0037] As shown in Figures 1-4, a dual-rotor 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 passing through The main transmission shaft 13 is configured to rotate relative to the stator 16, wherein,

[0038] 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 mag...

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Abstract

A wind-driven motor of double-rotator variable speed and constant frequency type is prepared as connecting exciter with generator main body in series way through master driving shaft of unit master wind wheel, setting permanent magnet external rotator and exciter internal rotator to be relatively rotating mode, coupling sub-driving shaft driven by wind sub-wheel with master driving shaft driven by master wind wheel on the same shaft in mode of mutual rotation, setting rotation speed measurement units on both said wind wheels for transmitting rotation signals to control unit.

Description

technical field [0001] The invention relates to a wind power generator, in particular to a series permanent magnet variable-speed constant-frequency excitation dual-rotor wind generator and an excitation control system with the wind generator. 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...

Claims

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Application Information

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IPC IPC(8): H02K16/00H02K7/10H02K21/12H02K1/27H02K5/16H02K7/18H02P9/04H02P9/14H02J3/38H02J3/40F03D1/02F03D7/02
CPCY02E10/763Y02E10/725Y02E10/72Y02E10/76
Inventor 王华君
Owner 天津市金天马电材电器有限公司
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