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A hot-swappable converter system for new energy and energy storage systems

An energy storage system, hot-swappable technology, applied in the direction of reversible conversion equipment, etc., can solve the problem that the safety of the DC/DC converter inverter system is difficult to guarantee, and achieve improved reliability and fault tolerance , easy installation or maintenance, reliable effect of parallel operation

Active Publication Date: 2015-09-02
CEEC JIANGSU ELECTRIC POWER DESIGN INST CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When any unit in the battery array fails, the safety of the DC / DC converter and even the entire inverter system is difficult to guarantee

Method used

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  • A hot-swappable converter system for new energy and energy storage systems
  • A hot-swappable converter system for new energy and energy storage systems
  • A hot-swappable converter system for new energy and energy storage systems

Examples

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Embodiment Construction

[0028] The present invention will be further described below in conjunction with the accompanying drawings. The following examples are only used to illustrate the technical solution of the present invention more clearly, but not to limit the protection scope of the present invention.

[0029] Such as figure 1 Shown is a schematic diagram of the system structure of the present invention. The main components of the whole system include: battery array 1, bidirectional DC / DC converter 2, DC bus 3, bidirectional DC / AC power converter 4, grid-connected switch 5, and grid 6. The input end of the bidirectional DC / DC converter 2 is connected to the battery array 1 , and the output end is connected to the DC bus 3 . At the same time, the input end of the bidirectional DC / AC power converter 4 is connected to the DC bus 3 , and the output end is connected to the grid 6 through the grid-connected switch 5 .

[0030] Its working principle is: the battery array 1 converts the stored energ...

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Abstract

The invention discloses a hot plug type conversion system for new energy and an energy storage system, which comprises a DC (Direct Current) power supply, bidirectional DC / DC (Direct Current / Direct Current) converters, a DC bus, a bidirectional DC / AC (Direct Current / Alternating Current) power converter and a parallel switch. A cell array is accessed to an inversion system by the bidirectional DC / DC converters, so that the conversion system can adapt to the cell arrays in various forms. A DC power line carrier communication mode is adopted, so that the conversion system is simpler, more convenient and quicker to mount or maintain, and more reliable in parallel operation, and various current equalization control strategies can be adopted conveniently. The communication mode is matched with a hot plug power switch for achieving hot plug of the cell array and the bidirectional DC / DC converters, so that the defect that outage is required under the condition that the DC side cell array of the traditional DC / AC inversion system is in a failure or maintenance state is overcome; the reliability and the fault-tolerant ability of the overall conversion system are improved; and the capacity of the overall conversion system is convenient to expand.

Description

technical field [0001] The invention relates to a hot-swappable battery array conversion system, which can be used for parallel connection and hot-swapping of battery arrays in energy storage systems, and can also be used in other DC / AC inverter systems (such as solar or wind energy inverter systems) Parallel connection and hot swapping of battery arrays. Background technique [0002] Due to more than a century of exploitation and use, the world's fossil fuel resources with limited reserves are dwindling and will be exhausted in the near future. On the other hand, the extensive use of fossil fuels has also warmed the global climate and seriously polluted the environment. Therefore, only by actively developing and utilizing new energy, improving the energy structure, and improving environmental protection can we take the lead in technological development in the new round of industrial revolution and seize the strategic commanding heights of economic growth. [0003] Among t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M7/66
Inventor 闫安心孙纯军钱康宗柳朱东升牛涛刘代刚陈杰顾明亮
Owner CEEC JIANGSU ELECTRIC POWER DESIGN INST CO LTD
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