Hybrid energy storage wind/PV hybrid generation system based on solid state transformer

A technology of solid-state transformers and hybrid energy storage, applied in photovoltaic power generation, single-network parallel feeding arrangements, etc., to achieve the effects of maintaining DC voltage, improving equipment utilization, and reducing system volume and cost

Inactive Publication Date: 2014-07-23
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] Solar energy and wind energy are the renewable energy sources with the widest distribution and highest utilizatio

Method used

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  • Hybrid energy storage wind/PV hybrid generation system based on solid state transformer
  • Hybrid energy storage wind/PV hybrid generation system based on solid state transformer
  • Hybrid energy storage wind/PV hybrid generation system based on solid state transformer

Examples

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Embodiment

[0026] like figure 1 As shown, a hybrid energy storage wind-solar hybrid grid-connected power generation system based on solid state transformer, the system includes a wind turbine 1, a photovoltaic array 2, a solid state transformer 3, a hybrid energy storage module 4, a power grid 5 and a control module 6, the solid state transformer 3 are respectively connected to the wind generator 1, the photovoltaic array 2, the hybrid energy storage module 4, the power grid 5 and the control module 6, and the control module 6 is connected to the hybrid energy storage module 4.

[0027] The specific structure of the solid-state transformer 3 includes an AC-DC rectifier 31, a DC-DC converter 32 and a DC-AC inverter 33 that are connected in sequence. The output end of the wind turbine 1 is used for inputting alternating current, and between the output end of the AC-DC rectifier 31 and the input end of the DC-DC converter 32 is its low-voltage DC input end, which is connected to the output ...

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Abstract

The invention relates to a hybrid energy storage wind/PV hybrid generation system based on a solid state transformer. The system comprises a wind driven generator, a photovoltaic array, the solid state transformer, a hybrid energy storage module, a power grid, and a control module. The solid state transformer is respectively connected with the wind driven generator, the photovoltaic array, the hybrid energy storage module, the power grid, and the control module. The control module is connected with the hybrid energy storage module. Compared with the prior art, the system obviously reduces system size and cost and improves a device utilization rate. Power fluctuation the system can be preferably restrained, power distribution reliability and electric energy quality of a distributed power supply can be improved, and the system can provide short-time energy support under conditions of low illumination intensity, low wind speed, or the like.

Description

technical field [0001] The invention relates to the technical field of application of power electronics in wind-solar hybrid power generation and grid connection, in particular to a hybrid energy storage wind-solar hybrid grid-connected power generation system based on a solid-state transformer. Background technique [0002] Solar energy and wind energy are the most widely distributed renewable energy sources with the highest utilization rate, but are subject to seasonal, geographical, climate and other constraints and present strong uncertainties. However, the two have a certain complementarity in time and region, and can be shared in energy storage and inverter links. They are suitable for joint power generation and realize resource complementarity, which can improve the reliability of system power supply and reduce the impact on the power grid. shock. Compared with independent photovoltaic or wind power systems, Wind / PV Hybrid Generation System (WPHGS) can obtain more st...

Claims

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Application Information

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IPC IPC(8): H02J3/38
CPCY02E10/56
Inventor 张明锐林承鑫
Owner TONGJI UNIV
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