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A control method and system for backup flywheel energy storage UPS

A flywheel energy storage and control method technology, applied in the direction of AC network load balancing, AC network circuits, electrical components, etc., can solve the problems of inability to supply power, the quality of power supply is not as high as that of online UPS, and the response is slow, and achieve high-quality power supply. , The effect of low installation and use threshold and fast response

Active Publication Date: 2020-12-29
TSINGHUA UNIV
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AI Technical Summary

Problems solved by technology

In comparison, the backup UPS system uses the least equipment, and the power supply efficiency is high, which can reach more than 95%. However, due to the limitation of the control method and the equipment used, its response is slow. Load power supply, the quality of power supply is not as high as that of online UPS

Method used

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  • A control method and system for backup flywheel energy storage UPS
  • A control method and system for backup flywheel energy storage UPS
  • A control method and system for backup flywheel energy storage UPS

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Embodiment Construction

[0031] 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 and are intended to explain the present invention and should not be construed as limiting the present invention.

[0032] The following describes a backup flywheel energy storage UPS control method and system according to an embodiment of the present invention with reference to the accompanying drawings. First, a backup flywheel energy storage UPS control method according to an embodiment of the present invention will be described with reference to the accompanying drawings. .

[0033] figure 1 It is a flowchart of a control method of a backup flywheel energy storage UPS according to an embodiment of the present invention.

[0034] Such as f...

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Abstract

The invention discloses a control method and system for a backup flywheel energy storage UPS. The method comprises when the grid mains is normal, enabling the grid mains to supply power to a power load and a flywheel UPS device; when the grid mains has a fault, starting the flywheel UPS device to supply power to the power load, determining whether the grid mains returns to normal, enabling the grid mains to supply power to the electric load and the flywheel UPS device if so, if not, still supplying power to the electric load with the flywheel UPS device and determining whether the supply timeof the flywheel UPS device is equal to the preset time; if not, stilling supplying power to the power load with the flywheel UPS device; if so, executing the next step; starting a diesel engine unitto supply power to the power load and the flywheel UPS device, and determining whether the grid mains returns to normal, supplying power to the power load and the flywheel UPS device with the grid mains if so, and supplying power to the power load and the flywheel UPS unit with the diesel engine unit if not. The method uses less equipment, has a low installation threshold, high efficiency, fast response, and high output voltage quality.

Description

technical field [0001] The invention relates to the technical field of power supply, in particular to a control method and system for a backup flywheel energy storage UPS. Background technique [0002] Traditional UPS systems mostly use batteries as energy storage units, which have the advantage of high energy storage density, which enables them to provide power supply for loads for a long time, but its disadvantages are large footprint, high failure rate, and unfriendly environment, etc. In many ways, this limits the development of battery energy storage UPS. The flywheel energy storage UPS system stores electrical energy as mechanical energy, which has the advantages of high-efficiency storage, fast charging and discharging, and environmental friendliness. It is especially suitable for places with frequent power outages. [0003] The working mode of the flywheel energy storage UPS system is divided into three types: online double conversion type, online interactive type a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/00H02J3/30
CPCH02J3/30H02J3/0073Y02E60/16
Inventor 姜新建吕静亮
Owner TSINGHUA UNIV
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