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A photovoltaic power generation inverter system

An inverter system and photovoltaic power generation technology, applied in photovoltaic power generation, electrical components, circuit devices, etc., can solve the problems of increased energy loss of photovoltaic system and increased current of photovoltaic power generation system, so as to reduce costs and losses, and reduce power loss. , the effect of reducing the alternating current

Active Publication Date: 2019-01-08
HUAWEI DIGITAL POWER TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Among them, the current in the photovoltaic power generation system of the centralized, distributed and distributed three architectures becomes larger, resulting in an increase in the energy loss of the photovoltaic system

Method used

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  • A photovoltaic power generation inverter system
  • A photovoltaic power generation inverter system
  • A photovoltaic power generation inverter system

Examples

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Embodiment Construction

[0043] An embodiment of the present application provides a photovoltaic power generation inverter system, which is used to increase the input voltage and grid-connected voltage of the inverter and reduce energy loss in the photovoltaic power generation inverter system under the same power conversion conditions.

[0044] The term "and / or" appearing in this application may be an association relationship describing associated objects, indicating that there may be three relationships, for example, A and / or B may indicate: A exists alone, and A and B exist simultaneously , there are three cases of B alone. In addition, the character " / " in this application generally indicates that the contextual objects are an "or" relationship.

[0045] The terms "first", "second" and the like in the specification and claims of the present application and the above drawings are used to distinguish similar objects, and are not necessarily used to describe a specific sequence or sequence. It is to ...

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Abstract

An embodiment of the present application discloses a photovoltaic power generation inverter system, which is used for increasing an input voltage and a grid-connected voltage of an inverter under thesame power conversion conditions, and reducing an energy loss in the photovoltaic power generation inverter system. A method for apply that invention comprises the follow steps: a photovoltaic array,a DC conversion unit, a bus unit and an inverter unit; Wherein the photovoltaic array is one or more pairs of photovoltaic arrays, and each pair of photovoltaic arrays comprises two photovoltaic arrays, wherein the DC conversion unit comprises a first stage DC-DC converting DC sub-unit, a second stage DC-DC converting DC sub-unit and a cascade sub-unit, and the number of the DC conversion units isat least one; When the inverter works normally, the bus voltage and the grid-connected voltage in the photovoltaic inverter system are increased, so that the current is reduced, and the energy loss of the system is reduced by the coupling connection or decoupling function of the cascaded sub-units.

Description

[0001] This application claims the priority of the Chinese patent application with the application number 201811109472.5 and the title of the invention "a photovoltaic power generation inverter system" filed with the China Patent Office on September 21, 2018, the entire contents of which are incorporated by reference in this application . technical field [0002] The present application relates to the technical field of photovoltaic power generation, and in particular to a photovoltaic power generation inverter system. Background technique [0003] In recent years, renewable energy has received extensive attention. Among renewable energy sources, compared with traditional fossil energy power generation, the use of solar power generation causes less environmental pollution. In the photovoltaic power generation system, the performance, reliability and management technology of photovoltaic power generation are becoming more and more mature. [0004] At present, there are main...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/38
CPCH02J3/383Y02E10/56H02J3/38H02J2300/24H02J7/35H02J7/34H02J3/381
Inventor 张彦忠王勋罗兰·欣普夫纳
Owner HUAWEI DIGITAL POWER TECH CO LTD
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