How to configure a good solar storage system?

The use of a good photovoltaic energy storage system can not only solve the problem of insufficient electricity or high electricity costs, but may also bring you some objective electricity benefits. Based on the actual electricity needs of each customer, Daya Electric Group professionally tailors energy storage configuration solutions that meet the customer's electricity needs, striving to maximize the interests of each customer and make electricity more affordable and environmentally friendly. , safe and secure. So what issues should our customers consider when choosing products to build their own systems? Customers can refer to the following suggestions, but the actual solution configuration will be slightly different due to the differences in customer electricity consumption.

1. Power matching

The power of the inverter should match the total power of the photovoltaic panels. It is usually recommended that the power of the inverter is 80%-120% of the total power of the photovoltaic panel to ensure the efficiency and stability of the system. Total power of photovoltaic panels = power of a single photovoltaic panel * quantity

2. Voltage matching

The voltage rating of a battery depends on the type of battery and system design. The output voltage of a photovoltaic panel depends on the type of photovoltaic modules and how they are connected (series or parallel). The output voltage of a single photovoltaic panel is usually between 18V and 40V (for common 12V, 24V systems). By connecting multiple photovoltaic panels in series, the total voltage of the system can be increased. For example, if 10 24V photovoltaic panels are connected in series, the total voltage will reach 240V. The input voltage of the inverter is greater than the total voltage when multiple photovoltaic panels are connected in series. Because the inverter needs to track the maximum power point voltage (MPPT) of the photovoltaic panel, the input voltage range needs to cover the Vmp of the photovoltaic panel, which is the maximum power point voltage.

In energy storage systems, the battery voltage usually needs to match the voltage of the photovoltaic system and inverter. Batteries can be connected in series or parallel to achieve the required system voltage and capacity.

3. Current matching

When photovoltaic panels are connected in parallel, the currents will be superimposed. In the same way, the total power generated after the photovoltaic panels are connected in parallel is less than the maximum input current of the inverter. When choosing products, we must also consider the impact of different installation methods.

At the same time, we need to consider the impact of climate conditions and temperature changes on system performance when designing. Generally speaking, our photovoltaic energy storage systems are popular in countries with abundant sunlight and unreliable power supply. The installation angle and orientation of photovoltaic panels will also affect their output power. In order to ensure that photovoltaic panels can receive sunlight to the greatest extent, we generally believe that 45 degrees or 180 degrees is the most suitable power generation angle for solar panels.

Daya Electric Group company specializes in providing customers with equipment that meets relevant international or national standards and certifications to ensure system reliability and safety. By optimizing the configuration plan, the performance and efficiency of the system are improved, and the cost of electricity is better saved for customers. The product types and styles are diversified, catering to the different needs of various customers, and are favored by new and old customers.