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Photovoltaic power optimizer

A power optimizer and photovoltaic technology, applied in photovoltaic power generation, photovoltaic modules, light radiation generators, etc., can solve problems such as power generation decline, achieve the effect of compensating power generation loss and easy installation

Inactive Publication Date: 2011-11-09
BAODING TIANWEI GRP CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a photovoltaic power optimizer, which ensures that each photovoltaic module in the photovoltaic system can output power to the maximum, and solves the problem of a sharp drop in power generation when the photovoltaic system is blocked by shadows

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Embodiment approach

[0016] figure 2 A schematic diagram of a photovoltaic power optimizer provided for the patent of this invention. Such as figure 2 As shown, it includes a photovoltaic battery unit 1 , a DC-DC optimizer 2 , an MPPT control unit 3 and an inverter 4 . Wherein each photovoltaic cell unit 1 is connected in series with a DC-DC optimizer 2, and the output end of the photovoltaic cell unit 1 is connected to the input end of the DC-DC optimizer 2, and connected in series to form a unit 5, and each unit 5 is connected in parallel, and then connected to the input of inverter 4.

[0017] Since each photovoltaic cell 1 is connected in series with a DC-DC optimizer 2 and connected to the MPPT control unit 3, each photovoltaic cell 1 in the unit 5 can reach the maximum output power, so the output power of the unit 5 can be improved. overall output power. After adopting the photovoltaic power generation system with this structure, the DC-DC converter of the inverter can be omitted, whi...

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Abstract

The invention relates to a photovoltaic power optimizer, which belongs to the technical field of photovoltaic power generation system application. The technical scheme comprises a plurality of paths of serial and parallel battery packs. Each panel is connected with a DC-DC power optimizer with a maximum power point tracking (MPPT) function, and has output which is connected to an input point of the DC-DC power optimizer. The photovoltaic power optimizer has the advantages that: the DC / DC power optimizer monitors and optimizes the electric energy of each photovoltaic panel and still enables the other panels to output maximum power even though any panel in an array is mismatched so as to compensate generated energy loss caused by the mismatching; and the DC / DC power optimizer can be rapidly and easily arranged in a solar photovoltaic system.

Description

[0001] Technical field: [0002] The invention relates to a photovoltaic power optimizer, which belongs to the technical field of application of photovoltaic power generation systems. Background technique: [0003] The full name of MPPT controller is "Maximum Power Point Tracking" (Maximum Power Point Tracking) solar controller. Solar power is one of the most promising renewable energy sources on the market. The return on investment of a photovoltaic system depends on the annual power generation of the system. Therefore, the photovoltaic system required by the user must have the characteristics of high efficiency, reliability and easy maintenance, so that the maximum power generation can be obtained. In the photovoltaic power system, the method used to achieve the optimal power of photovoltaic modules is MPPT. At present, it is common to connect all battery panels to a single inverter to perform MPPT. In this way, the MPPT function is centrally controlled by the inverter, ...

Claims

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Application Information

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IPC IPC(8): H02N6/00H02S40/30
CPCY02E10/50
Inventor 翟志强樊长在程志光武卫革赵志强王淼邵卫超
Owner BAODING TIANWEI GRP CO LTD
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