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Question:

The function of photovoltaic grid - connected inverter

The function of photovoltaic grid - connected inverter

Answer:

Finally, a sinusoidal AC output for a grid-connected photovoltaic power generation system is generated by a low-pass filter.
In general, single-phase h-bridge is a common configuration of dc / ac-level, but can also be used in three-phase and other configurations.
After some additional voltage buffering, the left side of the bridge is usually 18 ~ 20khz switching frequency, the dc voltage is converted to ac voltage.
By dc / dc conversion to increase or decrease the input voltage, adjust its output to achieve maximum efficiency.

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