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Distributed common direct current bus based wind energy and solar energy stored charging station system

A common DC bus and DC bus technology, applied in the direction of photovoltaic power generation, wind power generation, collectors, etc., can solve the problems of single photovoltaic system, no complementary power supply, isolated island operation, etc., to achieve easy expansion, increase flexibility of use, and reduce construction cost effect

Inactive Publication Date: 2015-12-23
张洪亮
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the continuous development of electric vehicle technology, DC bus-based charging station systems have also begun to be developed. However, such charging station systems in the prior art often use a single photovoltaic system, without complementary power sources, and cannot be operated off-grid or isolated.

Method used

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  • Distributed common direct current bus based wind energy and solar energy stored charging station system
  • Distributed common direct current bus based wind energy and solar energy stored charging station system

Examples

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Embodiment 1

[0026] refer to figure 1 In this embodiment, taking a charging station with a single DC bus as an example, the wind-solar-storage-storage charging station system based on a distributed public DC bus of the present invention is described in detail. The charging station system includes a wind power generation unit connected to a DC bus 1 , a photovoltaic power generation unit, an energy storage unit, and an AC grid-connected unit. The wind power generation unit includes two wind power generators (2-1, 2-2) and two AC / DC converters (3-1, 3-2), and the two AC / DC converters (3-1 , 3-2) are respectively connected to the wind generators (2-1, 2-2), and the output ends of the AC / DC converters (3-1, 3-2) are connected to the DC bus 1. The photovoltaic power generation unit includes two sets of solar photovoltaic combinations (4-1, 4-2) and two DC / DC converters (5-1, 5-2), and the DC / DC converters (5-1, The input ends of 5-2) are respectively connected to the input ends of the solar p...

Embodiment 2

[0033] In addition to adopting distributed single DC bus control, the present invention can also adopt dual DC bus control.

[0034] refer to figure 2 In this embodiment, taking a charging station with a dual DC bus structure as an example, the wind-solar-storage charging station system based on a distributed public DC bus of the present invention is described in detail. The charging station system includes a wind power generation unit connected to a DC bus 10, a photovoltaic power generation unit, an energy storage unit, and an AC grid-connected unit. The wind power generation unit includes two wind power generators (11-1, 11-2) and two AC / DC converters (12-1, 12-2), and the two AC / DC converters (12-1 , 12-2) are respectively connected to two wind power generators (11-1, 11-2), and the output ends of the two AC / DC converters (12-1, 12-2) are connected to the DC bus 10. The photovoltaic power generation unit includes two sets of solar photovoltaic combinations (13-1, 13-2) ...

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Abstract

The invention discloses a distributed common direct current bus based wind energy and solar energy stored charging station system. The charging station system comprises a photovoltaic power generation unit, an energy storage unit and a charging unit connected with the direct current bus, and further comprises a wind power generation unit and an alternating current grid connection unit connected with the direct current bus; the direct current bus adopts a framework of a single direct current bus or double direct current buses; the wind power generation, the photovoltaic power generation and the energy storage system are connected with the common direct current bus; the generated electricity energy can be used instantly; the balance of the generated electricity energy is stored for grid connection, so that the charging station system can be operated in an off-network or island operation mode; under the grid connection working condition, regulation of peak load shifting on the power grids can be realized to reduce the cost of power transmission and distribution; the system can adopt the framework of single direct current bus as well as the framework of double direct current buses, so that the regulation scope of the direct current bus voltage is greatly expanded, the performance requirements of the system are satisfied easily, the system can be expanded more easily, and the flexibility of the system in use is improved.

Description

technical field [0001] The invention belongs to the technical field of electric vehicle charging stations, and in particular relates to a wind-solar-storage-storage charging station system based on a distributed public DC bus. Background technique [0002] Faced with huge pressures such as the oil crisis and environmental pollution, electric vehicles will become the main development direction of new energy vehicles in the future. It is more and more widely used in people's life. Electric vehicle charging station is a very important part of electric vehicle supporting facilities. Electric vehicles need to be fully supplied with energy to meet their driving needs, so they must obtain energy from the grid. At present, electric vehicle charging station systems with photovoltaic systems and energy storage systems have been installed in domestic areas, but most of them are based on AC busbars. Both photovoltaic systems and energy storage systems need to be converted into alternat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/35H02J3/38H02J3/28
CPCY02E10/56Y02E10/76Y02E70/30
Inventor 张洪亮张明吴建刚王文海唐玉风
Owner 张洪亮
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