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Power generation system

A technology for power generation systems and generators, applied in reactive power compensation, reduction/prevention of power oscillation, reactive power adjustment/elimination/compensation, etc., can solve problems such as increasing the demand for land occupation and increasing the cost of wind power generation systems

Active Publication Date: 2020-04-07
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.

Method used

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Embodiment Construction

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

[0050] Meanwhile, in the following description, many specific details are set forth for the purpose of explanation to provide a thorough understanding of the embodiments of the present invention. However, it is obvious to those skilled in the art that the present invention can be implemented without the specific details or the specific manner described herein.

[0051] In addition, the s...

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Abstract

A power generation system includes: an internal feedback generator including a rotor winding disposed on a rotor and a main winding and a feedback winding disposed on a stator, the main winding beingelectrically connected to a power grid; and a double-fed converter connected between the rotor winding and the feedback winding and used for controlling the active power and the reactive power outputby the main winding. According to the system, the main winding of the stator is directly connected with a high-voltage power grid, so that a conventional boosting grid-connected transformer is omitted, and the feedback winding of the generator and the rotor winding adopt a low-voltage working voltage, so that a low-voltage converter which is mature in technology and relatively low in cost is conveniently adopted.

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 power is a clean and stable new energy. Wind power has also become one of the fastest growing energy sources in the world in recent years. The use of doubly-fed generators for power generation is currently 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 dual feedback generators, the electrical part is mainly composed of a low-voltage doubly-fed generator 101, a supporting low-voltage doubly-fed converter 102, and a boost parallel The network transformer 103 is composed. The variable-speed con...

Claims

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Application Information

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Patent Type & Authority Applications(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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