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Power supply circuit, inverter and photovoltaic power generation device

A technology of power supply circuit and inverter, applied in the field of power supply, can solve problems such as loss of DC conversion unit, and achieve the effect of satisfying voltage requirements

Pending Publication Date: 2022-05-13
SUNGROW POWER SUPPLY CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] If the input power connected to the power input terminal is directly output to the DC conversion unit, the DC conversion unit bears all the power of the input power connected to the power input terminal, resulting in serious loss of the DC conversion unit.

Method used

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  • Power supply circuit, inverter and photovoltaic power generation device
  • Power supply circuit, inverter and photovoltaic power generation device
  • Power supply circuit, inverter and photovoltaic power generation device

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Embodiment Construction

[0052]The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0053] In addition, in the present invention, descriptions such as "first", "second" and so on are used for description purposes only, and should not be understood as indicating or implying their relative importance or implicitly indicating the quantity of indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of these features. In addition, the technical solutions of the vario...

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Abstract

The invention discloses a power supply circuit, an inverter and a photovoltaic power generation device. The power supply circuit comprises a power supply access end, a direct current conversion unit and a main control unit. The power supply input end is used for accessing an input power supply and outputting the power supply to a direct current bus, and the main control unit controls the direct current conversion unit to convert the power supply output by the bus and then output a supplementary power supply, so that the supplementary power supply and the voltage of the input power supply are superposed and then output to the direct current bus; and the requirement of a post-stage circuit on the direct-current bus voltage is met. According to the invention, the output power of the DC conversion unit, the loss of the DC conversion unit and the corresponding heat dissipation cost are reduced, and the efficiency of a system using the power supply circuit is improved; and the bus voltage can operate at low voltage, so that the device stress of the direct-current conversion unit is reduced.

Description

technical field [0001] The invention relates to the technical field of power supplies, in particular to a power supply circuit, an inverter and a photovoltaic power generation device. Background technique [0002] In many power systems, such as inverters, it is necessary to use a DC conversion unit to boost the power received at the power input terminal. [0003] If the input power connected to the power input terminal is directly output to the DC conversion unit, the DC conversion unit bears all the power of the input power connected to the power input terminal at this time, resulting in serious loss of the DC conversion unit. Contents of the invention [0004] The main purpose of the present invention is to provide a power circuit, aiming at reducing the loss of the DC conversion unit in the power circuit. [0005] In order to achieve the above object, the present invention proposes a power circuit, which includes: [0006] A power input terminal, the power input termi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M3/04H02M3/335H02M7/48G05F1/67
CPCH02M3/04H02M3/33569H02M7/48G05F1/67
Inventor 陈鹏孙帅林磊明
Owner SUNGROW POWER SUPPLY CO LTD
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