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Cellular photovoltaic power station

A photovoltaic power station and cellular technology, which is applied in the field of solar power stations, can solve the problems of low efficiency of photovoltaic power stations and decreased efficiency of photovoltaic modules, and achieve the effects of improving shadow shading problems, reducing output resistance, and high promotion value

Inactive Publication Date: 2011-01-19
薛韬 +1
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0003] Another existing micro-inverter photovoltaic power station is: each photovoltaic module is equipped with a micro-inverter, and the maximum power point tracking and DC / AC inversion of the photovoltaic module are completed by the micro-inverter as a whole. This photovoltaic power station It solves the problem that the efficiency of photovoltaic modules decreases due to shading, and the efficiency of micro-inverter photovoltaic power plants is lower than that of centralized inverter photovoltaic power plants

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Embodiment Construction

[0013] The accompanying drawings disclose the structure of the present invention without limitation, and the present invention will be further described below in conjunction with the embodiments.

[0014] Depend on figure 1 It can be seen that the photovoltaic modules 1-9 in this embodiment form a low-power node SPPP with a node inverter PPI; 9 photovoltaic modules are respectively connected to 9 independent input ports of the node inverter PPI, and through DC / After the AC is inverted, it is output by an A port.

[0015] figure 1 8 low-power nodes SPPP are schematically shown in , and the AC output A of the inverter PPI of the 8 nodes is connected to the electrical intersection of the latitude and longitude grid EF. The dotted line indicates that the actual photovoltaic power station has several small power nodes Node SPPP, the power of the cellular photovoltaic power station depends on the number of small power nodes.

[0016] Depend on figure 2 It can be seen from the ...

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Abstract

The invention discloses a cellular photovoltaic power station. In the invention, one multi-input and single-output node inverter are connected into a small power node, the outputs of a plurality of small power nodes are connected in parallel to form the cellular photovoltaic power station. The node inverter of the cellular photovoltaic power station is provided with a plurality of photovoltaic module input interfaces and an inversion output port, each input interface corresponds to independent maximum power point tracking DC / DC converting circuit, and a microcontroller regulates a DC / DC conversion state according to the maximum power point tracking algorithm; conversion outputs of the whole photovoltaic modules on the interface are directly connected in parallel to realize integration of output power of the plurality of photovoltaic modules; and the integration power of the module is output by the inversion of one DC / AC. The invention combines the advantages of an integrated inversion photovoltaic power station and a micro-inverter photovoltaic power station and has high promotion value.

Description

technical field [0001] The invention relates to a solar power station, in particular to a cellular photovoltaic power station. Background technique [0002] An existing solar photovoltaic power station is: After connecting multiple photovoltaic modules, it is converted into alternating current through a centralized DC / AC inverter. When there is a shadow covering the photovoltaic modules, the overall efficiency of this solar photovoltaic power station will be greatly reduce. [0003] Another existing micro-inverter photovoltaic power station is: each photovoltaic module is equipped with a micro-inverter, and the maximum power point tracking and DC / AC inversion of the photovoltaic module are completed by the micro-inverter as a whole. This photovoltaic power station It solves the problem that the efficiency of photovoltaic modules decreases due to shading, and the efficiency of micro-inverter photovoltaic power plants is lower than that of centralized inverter photovoltaic po...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02N6/00
CPCH01L31/02021Y02E10/58H02J3/383Y02E10/563H02J2300/24H02J3/381Y02E10/56H02J3/46
Inventor 薛韬薛建仁
Owner 薛韬
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