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Winding type external rotor brushless double feed generator and its control device

A doubly-fed generator and generator technology, which is applied in the control of wind turbines, electromechanical devices, synchronous generators, etc., can solve the problems of high cost of generators and full-power converters, large diameters of motors, and inconvenient operation of generators. and other problems, to achieve the effect of facilitating equipment transportation, reducing the weight of the unit, and reducing the diameter

Active Publication Date: 2007-10-10
天津市金天马电材电器有限公司 +1
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  • Application Information

AI Technical Summary

Problems solved by technology

This model has technical defects such as large motor diameter, inconvenient installation and transportation, high cost of generator and full power converter, and inconvenient operation of generator for reactive power adjustment.

Method used

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  • Winding type external rotor brushless double feed generator and its control device
  • Winding type external rotor brushless double feed generator and its control device
  • Winding type external rotor brushless double feed generator and its control device

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Embodiment Construction

[0031] 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.

[0032] As shown in Figure 1-3.

[0033] A wire-wound external rotor brushless doubly-fed generator, including a generator main body, a stator, a rotor, a fan blade 2, and a hub 1. The fan blade 2 is installed on the hub 1. In the generator main body, the rotor rotates relative to the stator. Structural setting, the fan blade 2 drives the hub 1 to drive the rotor to rotate, and the outer rotor type generator and exciter are arranged in the main body, the generator and the exciter rotor are installed coaxially, and the generator and the exciter are axially connected in series; the generator and the exciter The exciters have independent magnetic circuits, the number of 15 pole pairs of the generator rotor winding is the same as the number of 14 pole pairs of the generator ...

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Abstract

The invention includes main body of generator, stator, rotor, fan blades, and wheel hub. Outer rotor type generator and exciter are setup inside the main body. Generator and exciter are installed in coaxial in cascaded structure. The control equipment includes centralized control device for set, AC field system of exciter, device for assisting magnetism (DAM), speed sensor of generator, and braking controller for blower fan. The centralized control device for set includes port for inputting measured signal from sensor. Input side of main loop of the AC field system of exciter is connected to output end of stator of the generator, and output side of main loop is connected to stator winding of exciter. Main loop of DAM is connected to the output end of the generator. The output end of the generator is connected to power grid. Advantages are: lightweight, no brush, no gear case, easy of adjusting wattless and high efficiency etc.

Description

technical field [0001] The invention relates to a wind power generator, in particular to a variable speed constant frequency winding type external rotor brushless double-fed generator and a control device thereof. Background technique [0002] Known technology doubly-fed induction generators, as variable-speed constant-frequency units, are widely used in hydropower stations, pumped storage power stations, especially in large-scale wind power generating units, because of the characteristics of variable-speed and constant-frequency operation of the units, the The energy conversion efficiency is greatly improved; and because the active power and reactive power of the generator set are regulated through the small power converter on the rotor side, the control characteristics and control cost of the unit are very satisfactory. Because the speed of large-scale MW-level wind turbines is very low, generally 15-35rpm, such a low speed will increase the number ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K17/42H02K17/44H02K19/16H02K19/38H02K3/04H02K3/28H02K5/04H02P9/04H02P9/14F03D9/00F03D7/00
Inventor 王华君杨彦杰商建锋
Owner 天津市金天马电材电器有限公司
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