3000w Solar Power Off Grid Inverter

FT series:3000w solar power off grid inverter

      "Direct Current" (DC for short), also known as "constant current", is a type of direct current that is constant in magnitude and direction.

In 1747, Franklin in the United States proposed the law of conservation of electric charge based on experiments, and defined the terms of positive and negative electricity.

Constant current means that the magnitude (voltage level) and direction (positive and negative poles) do not change with time (relative range), such as dry batteries. Pulsating direct current means that the direction (positive and negative) does not change, but the magnitude changes with time. For example, if we rectify the 50Hz alternating current through a diode, the typical pulsating direct current is obtained, and the half-wave rectification obtains the 50Hz pulsating direct current. The 100Hz pulsating DC current is obtained by full-wave or bridge rectification. They only become smooth DC after filtering (using inductors or capacitors). Of course, there are still pulsating components (called ripple coefficient), which depends on the filter circuit. filter effect.

     1. When transmitting the same power, the wire used for DC transmission is only 2/3 to 1/2 of that of AC transmission.

     Compared with the three-wire three-phase AC transmission, under the condition of the same cross-sectional area and the same current density of the transmission line, even without considering the skin effect, the DC transmission can be transmitted even if the skin effect is not considered. The same electric power, while the transmission line and insulation material can save 1/3.

    If the skin effect and various losses (dielectric loss of insulating materials, eddy current loss of magnetic induction, corona loss of overhead lines, etc.) are considered, the cross-sectional area of the wire used to transmit the same power AC power is greater than or equal to the cross-sectional area of the wire used for DC transmission. 1.33 times. Therefore, the wires used in DC transmission are almost half of those used in AC transmission. At the same time, the structure of the DC transmission tower is simpler than that of the three-phase AC transmission of the same capacity, and the line corridor occupies less space.

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