Photovoltaic assembly with MPPT (Maximum Power Point Tracking) module

A photovoltaic module and its own technology, applied in photovoltaic power generation, photovoltaic modules, electrical components, etc., can solve the problems of battery performance degradation, mismatch, and inability to specify individual units, etc., to facilitate troubleshooting, improve efficiency, and facilitate system maintenance Effect

Inactive Publication Date: 2011-04-20
SOUTHEAST UNIV
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

When several photovoltaic modules are connected in series, each has a slightly different maximum power current, this series system cannot make each module output the optimal power current, resulting in mismatch loss
When there is a partial occlusion problem on the panel, the performance of the battery is reduced, which can also cause the above mismatch problem
Due to matching requirements, there

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  • Photovoltaic assembly with MPPT (Maximum Power Point Tracking) module

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[0011] detailed description

[0012] In the following, the present invention will be further clarified with reference to the accompanying drawings and specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and not to limit the scope of the present invention. After reading the present invention, those skilled in the art will understand various aspects of the present invention. Modifications in equivalent forms fall within the scope defined by the appended claims of this application.

[0013] Such as figure 1 As shown, the photovoltaic module with its own MPPT module of the present invention includes an 8-bit ADC chip, A / D control module, MPPT module, PWM module, bridge drive module, and DC / DC module; the input of the 8-bit ADC chip Terminal collects the voltage and current values ​​of the photovoltaic battery pack; the A / D control module controls the 8-bit ADC chip to sample the voltage and current data, and inputs th...

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Abstract

The invention discloses a photovoltaic assembly with an MPPT (Maximum Power Point Tracking) module, which comprises a photovoltaic battery pack and an MPPT controller, wherein the MPPT controller comprises an A/D conversion module, an A/D control module, an MPPT module, a PWM (Pulse-Width Modulation) module, a bridge driving module and a DC (Direct Current)/DC module; the input end of the A/D conversion module is used for inputting the voltage and the current data of the photovoltaic battery pack, and the output end of the A/D conversion module is connected with the input end of the A/D control module; the input end of the MPPT module is connected with the output end of the A/D control module, and the output end of the MPPT module is connected with the input end of the PWM module; the input end of the bridge driving module is connected with the output end of the PWM module; and the output end of the bridge driving module is connected with the DC/DC module outputting voltage signals. In the invention, the MPPT module is internally arranged, which ensures that the output of each photovoltaic assembly is maintained at a maximum power point, thereby the efficiency of a photovoltaic system is effectively improved.

Description

technical field [0001] The invention relates to a photovoltaic module and belongs to the field of solar photovoltaic grid-connected equipment. Background technique [0002] Traditional photovoltaic systems are built with tens to hundreds of photovoltaic modules connected in series and parallel. Usually, multiple battery modules are connected in series to form a photovoltaic module string, and then the string is connected in parallel to form a photovoltaic array, and then connected to the inverter. The inverter implements maximum power tracking for the entire array, harvests electrical energy and converts DC to AC for connection to the grid. [0003] Conventional photovoltaic systems are less efficient. When several photovoltaic modules are connected in series, each has a slightly different maximum power current, the series system cannot make each module output the optimal power current, resulting in mismatch loss. When partial occlusion occurs on the panel, battery perfor...

Claims

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Application Information

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IPC IPC(8): H02N6/00H02S40/32
CPCY02E10/50
Inventor 王宝安王玉路学刚
Owner SOUTHEAST UNIV
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