Solar grid-connected inverter with maximum power point tracking (MPPT) system

A technology of maximum power tracking and solar energy, applied in control/regulating systems, instruments, regulating electrical variables, etc., can solve the problem of photovoltaic cell voltage not collecting and so on

Inactive Publication Date: 2012-08-15
谭汉卿
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Almost without exception, photovoltaic cell voltages are not ideal for harvesting the most available solar energy

Method used

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  • Solar grid-connected inverter with maximum power point tracking (MPPT) system
  • Solar grid-connected inverter with maximum power point tracking (MPPT) system
  • Solar grid-connected inverter with maximum power point tracking (MPPT) system

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Embodiment Construction

[0014] Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:

[0015] Depend on figure 2 It can be seen that a solar grid-connected inverter with a maximum power tracking system related to the present invention is composed of a metal-structured cabinet-type container box (22), a door lock (18), and a door (19). And on the surface of the door (19) are provided with a working status indicator light (17), an LCD display screen (21), and a cooling fan (20) is also provided on the side of the casing.

[0016] It is characterized in that each unit circuit of the utility model is installed in the cabinet type container box of the metal structure. see figure 1 The solar photovoltaic cell array unit (1) is connected to an AC load (5) through a DC-DC conversion circuit (2), a DC-AC inverter circuit (3), and an AC output filter circuit (4); the solar photovoltaic cell array The unit (1) is connected with the DSP m...

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Abstract

The invention discloses a solar grid-connected inverter with a maximum power point tracking (MPPT) system. The solar grid-connected inverter comprises a cabinet-type container box body (22) of a metal structure, a door lock (18) and a door (19). Working state indicating lights (17) and an LCD (Liquid Crystal Display) screen (21) are arranged on the surface of the door (19), and a cooling fan (20) is arranged on the lateral face of the box body. The solar grid-connected inverter is characterized in that all unit circuits are arranged in the cabinet container box body of the metal structure, a photovoltaic grid-connected system which takes a DSP (Digital Signal Processing) microprocessor (12) as a main control chip has rapid operational capability and rich peripheral resources so as to provide a favorable platform for the entire control system, and an MPPT control algorithm which has the tacking object of making a load acquire maximum power is adopted to realize the tracking of a maximum power point.

Description

technical field [0001] The invention relates to a solar grid-connected inverter with a maximum power tracking system, in particular to a device that mainly uses solar photovoltaic cells to generate electricity, can significantly improve power generation efficiency, and incorporates the generated electric energy into a grid. Background technique [0002] A traditional solar photovoltaic grid-connected system consists of a solar inverter that receives a low DC output voltage from a PV array and generates an AC line voltage. Inverters that do not use the MPPT algorithm simply connect the photovoltaic module directly to the battery, forcing the photovoltaic module to work at the battery voltage. Almost without exception, photovoltaic cell voltages are not ideal for harvesting the most available solar energy. Contents of the invention [0003] The purpose of the present invention is to provide a solar grid-connected inverter with a maximum power tracking system for the shortco...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/38G05F1/67
Inventor 谭汉卿
Owner 谭汉卿
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