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Wind storage combined wind power converter and control method thereof

A combination of wind power converter and wind storage technology, applied in the field of wind power generation, can solve the problems of poor DC voltage stability and difficult control and stability of DC side voltage, and achieve the effect of smooth power and improved stability

Pending Publication Date: 2021-02-12
SUNGROW POWER SUPPLY CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the prior art, the DC unloading circuit chopper device is usually installed on the DC bus side of the converter, but it can only be used to discharge the excess energy on the DC side, and the DC side voltage is not easy to control and stabilize. Therefore, the wind power converter Poor DC voltage stability

Method used

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  • Wind storage combined wind power converter and control method thereof
  • Wind storage combined wind power converter and control method thereof
  • Wind storage combined wind power converter and control method thereof

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Embodiment Construction

[0060] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0061] In this application, the term "comprises", "comprises" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article, or apparatus comprising a set of elements includes not only those elements, but also includes none. other elements specifically listed, or also include elements inherent in such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "com...

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Abstract

The invention discloses a wind storage combined wind power converter and a control method thereof. The energy storage unit is arranged on the direct current side of the wind power converter, namely the energy storage unit is used for replacing a Chopper device in the prior art, so that the bidirectional regulation of the direct current side voltage of the wind power converter can be realized through the charging and discharging functions of the energy storage unit; therefore, the direct-current side voltage of the wind power converter is kept stable, and the stability of the wind power converter is improved. In addition, the energy storage unit can cooperate with the wind turbine generator to enable the wind storage combined wind power converter to have the function of achieving the powerauxiliary service control target, such as primary frequency modulation, energy transfer and power smoothing.

Description

technical field [0001] The invention relates to the technical field of wind power generation, in particular to a wind storage combined wind power converter and a control method thereof. Background technique [0002] With the development and progress of science and technology, wind power in emerging markets has developed rapidly. In the context of today's tight energy supply, the installed capacity of wind turbines continues to rise, and the proportion of wind power in energy and power supply is increasing year by year. However, as a new energy source, wind power still has many disadvantages, for example, the characteristics of power fluctuation and intermittency are relatively obvious, and the participation of electric auxiliary services is low, etc. Therefore, in order to realize large-scale wind power grid connection, it is necessary to improve its power generation performance and ensure the stability of the power grid. [0003] In the prior art, the DC unloading circuit ...

Claims

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Application Information

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IPC IPC(8): H02J3/38H02J3/28
CPCH02J3/381H02J3/28H02J2300/28Y02E10/76Y02E70/30
Inventor 梁信信汪令祥吴玉杨何挺
Owner SUNGROW POWER SUPPLY CO LTD
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