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Overlapped double rotor generator and its speed changing and frequency changing exciting system

A frequency conversion excitation and generator technology, which is applied to control generators and control generators and engines through magnetic field changes. And other issues

Inactive Publication Date: 2007-06-27
天津市新源电气科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] It is known that the wind turbine transmits the power generated by the wind rotor under the action of the wind to the generator through the gearbox and makes it obtain a corresponding speed; usually the speed of the wind rotor is very low, which is far below the power generation required by the high-speed generator The speed must be realized through the acceleration of the gear pair of the gearbox; while the working conditions of the wind turbine unit are generally very poor, frequent failures of the gearbox are common
[0006] Products manufactured by conventional technologies have poor reliability, high maintenance costs, and low unit efficiency

Method used

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  • Overlapped double rotor generator and its speed changing and frequency changing exciting system
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  • Overlapped double rotor generator and its speed changing and frequency changing exciting system

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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 telescopic double-rotor variable-speed variable-frequency generator includes a generator body 1 fixed on a base 10, and a generator stator 16 fixed in a casing 11 of the generator body, wherein,

[0038] The permanent magnet inner rotor 17 is driven by the auxiliary drive 12 and rotates relative to the stator 16, and is installed in the main casing of the generator;

[0039] The ring rotor 14 is driven by the main transmission shaft 13, the ring rotor is a structural device that surrounds and can rotate around the permanent magnet inner rotor, and the ring rotor 14 is configured to rotate relative to the stator 16; the ring rotor 14 is supported by the ring rotor The unit 140 surrounds the aforementioned permanent magnet inner rotor 17 ...

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Abstract

This invention relates to a telescopiform dual-rotor generator and its shift and frequency conversion excitation system, in which, a permanent magnet internal rotor is matched on a sub-transmission shaft rotating relatively to a stator, a loop rotor rotating corresponding to the stator is matched on the primary shaft of the generator, a crab controller and a set collected control device are coupled in the mode of controlling wind direction under the main vane, and the main and sub-vanes are matched with main and sub variable adjusting units for adjusting oar pitch angles, and the adjusting units are coupled with the set collected control device in the mode of controlling the variable oar of the vane adjusting unit, a main and a sub vane rotation speed detection devices are set on the main and the sub-vanes transferring signals of rotation speed to the collected device of the set and the crab controller and the collected device are coupled in the mode of controlling wind rotationdirection under the main vane.

Description

technical field [0001] The invention relates to a wind power generator, in particular to a variable-speed variable-frequency generator with a telescoping double-rotor excitation structure and an excitation control system thereof. Background technique [0002] Known technology such as Chinese patent CN200510022771.1 discloses that the present invention discloses a variable speed and constant frequency method for wind power generation. The power Pw is input to the input shaft of the differential permanent magnet motor, and the differential mechanism of the differential permanent magnet motor performs power division or confluence to generate power flow Pg, which enters the stator winding of the differential permanent magnet motor and realizes constant speed and constant frequency power generation to the power grid through the feeder . Compared with the traditional method of variable speed and constant frequency, the present invention can significantly improve the power generat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P9/04H02P9/14H02J3/38H02J3/40H02K16/00H02K7/10H02K21/12H02K1/27H02K5/16H02K7/18F03D1/02F03D7/02
CPCY02E10/76
Inventor 王华君
Owner 天津市新源电气科技有限公司
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