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逆變器分類

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逆變器作為光伏電站的電能轉(zhuǎn)換設(shè)備，在整個電站中占據(jù)著舉足輕重的地位。光伏逆變器是將組件產(chǎn)生的低壓直流電轉(zhuǎn)換為交流電的電力電子設(shè)備，接入負載或者并入到電網(wǎng)中，是光伏系統(tǒng)中的核心器件。并網(wǎng)逆變器有以下的主要功能：

將光伏組件產(chǎn)生的直流電轉(zhuǎn)換為交流電

通過最大功率跟蹤器，動態(tài)地查找和利用最大功率點（MPP）來實現(xiàn)可用功率的最大化

記錄運行數(shù)據(jù)

提供電流、電壓及當(dāng)?shù)仉娋W(wǎng)的相關(guān)保護

逆變器的分類有哪些？

就產(chǎn)品類型而言，目前逆變器產(chǎn)品主要分為四類，即：

集中式逆變器（功率范圍在250KW-10MW ，主要用于大型地面電站）

集散式逆變器（功率范圍在1MW-10MW，主要用于復(fù)雜的大型地面電站）

組串式逆變器（功率范圍在1.5KW-250KW，主要用于戶用、工商業(yè)分布式和地面電站等）

微型逆變器（功率范圍一般在4kW以下，主要應(yīng)用于分布式等中小型電站?；趯夥踩珕栴}考慮，也越來越多被應(yīng)用于大型工商業(yè)分布式電站）

微型逆變器可對系統(tǒng)中每塊組件進行逆變并進行獨立的MPPT控制，能夠大幅提高整體效率，同時也可以避免傳統(tǒng)逆變器具有的直流高壓、弱光效應(yīng)差、木桶效應(yīng)等。

As the power conversion equipment of photovoltaic power station, inverter occupies a pivotal position in the whole power station. Photovoltaic inverter is a power electronic device that converts low-voltage direct current generated by the module into alternating current. It is connected to the load or incorporated into the power grid. It is the core device in the photovoltaic system. Grid-connected inverter has the following main functions:

The direct current generated by photovoltaic modules is converted to alternating current

Through the maximum power tracker, the maximum power point (MPP) is dynamically found and utilized to maximize the available power

Recording Running Data

Provide current, voltage and local grid protection

What are the classification of inverters?

In terms of product types, inverter products are mainly divided into four categories at present, namely:

Centralized inverter (power range: 250KW-10MW, mainly used in large ground power stations)

Distributed inverter (power range: 1MW-10MW, mainly used in complex large ground power stations)

Cluster series inverter (power range is 1.5KW-250KW, mainly used for household, industrial and commercial distributed and ground power stations, etc.)

Micro inverter (power range is generally below 4kW, mainly used in distributed small and medium-sized power stations. Based on the consideration of photovoltaic safety, it is more and more applied to large industrial and commercial distributed power stations.)

The micro inverter can invert each component in the system and carry out independent MPPT control, which can greatly improve the overall efficiency, but also avoid the traditional inverter some DC high voltage, poor light effect, barrel effect, etc.