What are the advantages of three-phase grid-connected photovoltaic inverters

First of all, you need to understand the difference between single-phase electricity and three-phase electricity. Three-phase electricity is the advantage of single-phase electricity.

1. Consider from the perspective of use

Three-phase electricity has a higher voltage and can drive high-power electrical appliances. For example, three-phase electricity can drive squirrel-cage asynchronous motors. This type of motor has a simple structure, is easy to maintain and manufacture, and is durable. It has important uses in industry, so industrial electricity is generally three-phase electricity. Secondly, the use of three-phase electricity will have more voltage options, because three-phase electricity can be connected to single-phase electricity, while single-phase electricity cannot be connected to three-phase electricity.

2. Considering from the perspective of safety

Three-phase electricity provides a better voltage level and is relatively safe. Assuming the voltage is 380V, the single-phase is 380V and the line is 0V, but if the three-phase, two-wire is 220V, the voltage level drops, insulation, wire diameter and a series of safety issues have advantages.

3. Considering from the perspective of physics

The single-phase instantaneous power curve fluctuates and is unstable, while the three-phase motor instantaneous power is a straight line, equivalent to the average power, which is relatively stable. Contributor, because the three phases of three-phase power differ by 123 degrees from the single-phase power, 4 wires can transmit 3 times the single-phase power.

4. From an economic perspective

For enterprises, the higher the voltage, the cheaper the electricity bill. For the country, if it is single-phase power generation, the same transmission towers are built nationwide and the same cable trenches are dug, the cost is the same as three-phase transmission, but the three-phase transmission efficiency is very high, and the three-phase transmission capacity is stronger than single-phase at the same cost.

Three-phase grid-connected power generation is a three-phase grid connected by an inverter, and single-phase grid-connected power generation is a single-phase grid-connected power generation. The three-phase grid-connected power system is widely used, with high inverter power density, good output power quality, small impact of three-phase balance on the grid, light grid load, and high power utilization rate, and will be increasingly used in power generation systems.

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GoodWe MT series three-phase photovoltaic inverters are widely used in industrial and commercial roofs, mountainous hills, agricultural photovoltaic, fishery photovoltaic complementary and other distributed and ground power station projects. MT series intelligent photovoltaic inverters adopt advanced topology and innovative inverter control technology, which significantly improves power generation and user investment returns. Its communication methods are flexible and diverse, supporting PLC power carrier communication, greatly saving communication cable costs and construction costs. It has also obtained the world's first 4110 German medium-voltage grid-connected certificate issued by Rhine TUV. The German medium- and high-voltage grid-connected standard is the most stringent standard in the European grid-connected standard. It is the preferred photovoltaic inverter for installing medium and large photovoltaic power stations.