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Off-grid power generation system and control method and application system thereof

A technology of power generation system and control method, which is applied in the direction of electrolysis process, electrolysis components, AC network load balancing, etc., and can solve problems such as overheating failure of unloading unit and system energy loss

Pending Publication Date: 2021-06-18
SUNGROW POWER SUPPLY CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of this, the embodiment of the present invention provides an off-grid power generation system and its control method and application system to solve the problem of unloading the excess energy generated by the system through the unloading unit in the existing off-grid wind power hydrogen production system, The resulting system energy loss and the problem that the unloading unit is prone to overheating and failure

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Embodiment Construction

[0049] 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.

[0050] 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 provides an off-grid power generation system and a control method and an application system thereof. The output end of a power generation unit in the system is connected with the input side of a machine side converter; one side of a DC / DC bidirectional converter is connected with an energy storage device; and the other side of the DC / DC bidirectional converter, the input side of a first DC / DC converter, the DC side of a DC / AC inverter and the output side of the machine side converter are connected with a DC bus; the capacity of the machine side converter of the system is equal to the full-load power of the hydrogen production system connected with the first DC / DC converter, so that the hydrogen production system can produce hydrogen in a full-load manner only when the machine side converter outputs at the maximum power, in other words, the situation of excessive power generation of the fan does not exist in the system, an unloading unit does not need to be additionally arranged, power limitation on the system is not needed, and energy loss and waste are avoided.

Description

technical field [0001] The invention relates to the technical field of power generation, in particular to an off-grid power generation system, a control method and an application system thereof. Background technique [0002] As a low-carbon and green hydrogen production method, wind power hydrogen production is a common off-grid wind power hydrogen production system, please refer to figure 1 , mainly composed of wind power generation unit, rectifier unit, unloading unit, energy storage unit, bidirectional DC conversion unit, voltage source inverter unit, electrolytic DC conversion unit, water electrolyzer and centralized control unit. Among them, the wind power unit converts wind energy into electrical energy, and then converts the AC power output by the wind power unit into DC power through the rectification unit; the bidirectional DC conversion unit combined with the energy storage unit smoothes the output power of the rectifier unit, and tracks the maximum wind energy uti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/32H02J3/38C25B1/04C25B9/65
CPCH02J3/32C25B1/04Y02P20/133Y02E60/36Y02E70/30
Inventor 刘孟伟汪令祥
Owner SUNGROW POWER SUPPLY CO LTD
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