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Generator and its control method

A generator and control circuit technology, applied to generator control parts, controlling generators, electromechanical devices and other directions through magnetic field changes, can solve problems such as aggravating wind turbine vibration and uneven air gap, and reduce the probability of vibration , The effect of reducing vibration amplitude and prolonging life

Active Publication Date: 2020-05-12
XINJIANG GOLDWIND SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In practical applications, since the free ends of the stator and rotor are not supported by the support body, they will bend toward the axis under the action of gravity, resulting in uneven air gap between the rotor and the stator, which will aggravate the vibration of the wind turbine

Method used

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  • Generator and its control method
  • Generator and its control method
  • Generator and its control method

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Embodiment Construction

[0041] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0042] Those skilled in the art will understand that unless otherwise stated, the singular forms "a", "an", "said" and "the" used herein may also include plural forms. It should be further understood that the word "comprising" used in the description of the present invention refers to the presence of said features, integers, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, Integers, steps, operations, elements, components, and / or groups thereof. It will be unders...

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Abstract

The invention provides a power generator and a control method thereof. The power generator comprises a stator, a rotor, a stator excitation coil assembly, a rotor excitation coil assembly and a control circuit, wherein the stator or the rotor comprises a fixed end and a free end along an axial direction, one end of the fixed end is fixed, one end of the free end is of a cantilever structure, the free end is opposite to the fixed end, the stator excitation coil assembly is circumferentially arranged on a circumferential wall of the free end of the stator, the rotor excitation coil assembly is circumferentially arranged on a circumferential wall of the free end of the rotor, and the stator excitation coil assembly and the rotor excitation coil assembly are right opposite to each other alonga radial direction. In the power generator, the stator excitation coil assembly and the rotor excitation coil assembly are controlled to generate magnetic fields with same polarities, the width of a radial gap between the free end of the stator and the free end of the rotor is adjusted, the vibration probability of the power generator during working is reduced, or the vibration amplitude of the power generator during working is reduced, and the lifetime of the power generator is prolonged.

Description

technical field [0001] The invention relates to the field of wind power generation, in particular, the invention relates to a generator of a wind power generating set and a control method thereof. Background technique [0002] Wind energy, as a renewable clean energy, has been paid more and more attention by countries all over the world. Among them, wind power generation is currently one of the most widely used applications of wind energy, which is not only environmentally friendly but also capable of producing a large amount of electric energy. [0003] In current wind turbines, a rotor and a stator are included. Take the outer rotor generator as an example, the inner stator is fixed at the center of the generator, and the outer rotor rotates around the central axis of the inner stator; due to the relative motion between the inner stator and the outer rotor, a certain gap is formed between the inner stator and the outer rotor. air gap. The air gap structure is an importa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K3/50H02K3/28H02K5/24H02P9/14H02P9/02
CPCH02K3/28H02K3/50H02K5/24H02P9/02H02P9/14
Inventor 温登哲
Owner XINJIANG GOLDWIND SCI & TECH CO LTD
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