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Photovoltaic inverter, as the main component and important component of the solar photovoltaic power generation system, photovoltaic inverter can ensure the normal operation of the solar photovoltaic power generation system, and the correct configuration and selection of the photovoltaic inverter is important. In addition to determining the configuration of the inverter based on the technical indicators of the entire photovoltaic power generation system and referring to the product sample manual provided by the manufacturer, the following technical indicators should generally be considered. There are many types of inverters on the market. When installing a photovoltaic power generation system, choose a suitable and excellent inverter from the following points. Please read the explanation from photovoltaic inverter manufacturer & Growatt:
, rated output power
The rated output power represents the ability of the photovoltaic inverter to supply power to the load. Generally, the higher the rated output power, the greater the electrical load it carries. When selecting a photovoltaic inverter, you should first consider having sufficient rated power to meet the electrical power requirements of the equipment under load, as well as the expansion of the system and the connection of some temporary loads. When the electrical equipment is dominated by purely resistive loads or the power factor is greater than ., the rated output power of the photovoltaic inverter is generally selected to be %~% greater than the total power of the electrical equipment.
, Overall machine efficiency
Overall machine efficiency refers to the power loss of the photovoltaic inverter itself. Photovoltaic inverters with larger capacity also provide efficiency values under full load operation and low load operation. The efficiency of inverters below the general level should be above %, the efficiency of inverters below the general level should be above %, and the efficiency of larger power inverters must be above %. The efficiency of the inverter has a great impact on increasing the effective power generation and reducing the cost of power generation of the photovoltaic power generation system. Therefore, when choosing a photovoltaic inverter, you should try your best to compare and choose a product with higher overall efficiency.
, Output voltage adjustment performance
The output voltage adjustment performance indicates the voltage stabilization ability of the output voltage of the photovoltaic inverter. Generally, photovoltaic inverter products provide the percentage of fluctuation deviation of the photovoltaic inverter output voltage when the DC input voltage changes within the allowable fluctuation range, which is usually called the voltage regulation rate. A high-performance photovoltaic inverter should also provide the deviation percentage of the photovoltaic inverter's output voltage when the load changes from zero to %, which is usually called the load regulation rate. The voltage regulation rate of a photovoltaic inverter with excellent performance should be less than or equal to &%, and the load regulation rate should be less than or equal to &%.
, Starting performance
The most basic condition for a photovoltaic inverter is that it can start reliably under rated load. High-performance photovoltaic inverters can be started at full load multiple times without damaging the power switching devices and other circuits. Small inverters have disadvantages. For their own safety, soft start or current limiting start measures are sometimes used. In other words, the higher the performance, the better the inverter.
Regarding the relevant information on how to choose photovoltaic inverters, Growatt photovoltaic inverter supplier will explain it to you here. In the selection process of photovoltaic inverters, follow the corresponding indicators, and you will not lose the Biased, the above four points are the main basis for the design and purchase of photovoltaic inverters, and are also important indicators for evaluating the technical performance of photovoltaic inverters. If you have any questions, please feel free to call the hotline of Shenzhen Growatt New Energy Co., Ltd.!
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