a power generation system

A technology for power generation systems and generators, which is applied in the directions of reducing/preventing power oscillation, single-grid parallel feeding arrangement, reactive power adjustment/elimination/compensation, etc. question

Active Publication Date: 2021-07-16
ZHUZHOU CSR TIMES ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Since the grid-connected transformer 103 usually needs to be placed on the ground near the wind turbine tower, this not only increases the demand for land on the ground of the wind farm, but also increases the cost of the entire wind power generation system.

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Embodiment Construction

[0049] The implementation of the present invention will be described in detail below in conjunction with the accompanying drawings and examples, so as to fully understand and implement the process of how to apply technical means to solve technical problems and achieve technical effects in the present invention. It should be noted that, as long as there is no conflict, each embodiment and each feature in each embodiment of the present invention can be combined with each other, and the formed technical solutions are all within the protection scope of the present invention.

[0050] Also, in the following description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of embodiments of the invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced without the specific details or in the particular manner described.

[0051] In addition, the steps shown in the flow dia...

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Abstract

A power generation system, which includes: an internal feedback generator, which includes a rotor winding arranged on a rotor, and a main winding and a feedback winding arranged on a stator, wherein the main winding is electrically connected to a grid; a double-fed converter, which Connected between the rotor winding and the feedback winding, it is used to control the active power and reactive power output by the main winding. In this system, the stator main winding is directly connected to the high-voltage power grid, thus eliminating the need for a conventional step-up grid-connected transformer, and the generator feedback winding and rotor winding adopt low-voltage working voltage, so as to adopt low-voltage type with mature technology and low cost. Converter.

Description

technical field [0001] The present invention relates to the technical field of power electronics, in particular to a power generation system, in particular to a variable-speed constant-frequency wind power generation system based on an internal feedback generator. Background technique [0002] Wind energy is a clean and stable new energy, and wind power has become one of the fastest growing energy sources in the world in recent years. The use of doubly-fed generators for power generation is one of the mainstream methods of grid-connected variable-speed constant-frequency wind power generation. [0003] Such as figure 1 As shown, for the existing grid-connected variable-speed constant-frequency wind power generation system based on double-feedback generators, its electrical part is mainly composed of low-voltage doubly-fed generator 101, supporting low-voltage doubly-fed converter 102 and boost parallel network transformer 103. The variable speed and constant frequency con...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/38H02J3/24H02J3/18
CPCH02J3/18H02J3/24Y02E40/30
Inventor 胡家喜盛建科黄敏张少云佘岳曹国荣魏凯陈元初徐凤星
Owner ZHUZHOU CSR TIMES ELECTRIC CO LTD
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