High-frequency resonance suppression method for LCL grid-connected inverter connected to high-order distribution network
A high-frequency resonance, inverter technology, applied in AC networks to reduce harmonics/ripples, harmonic reduction devices, etc., can solve problems affecting system stability, system stability effects, complex high-order characteristics, etc. Achieve the effect of reducing harmonic content, suppressing high-frequency resonance phenomenon, and improving dynamic stability
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[0023] The present invention will be further described now in conjunction with accompanying drawing. These drawings are simplified schematic diagrams only to illustrate the basic structure of the present invention in a schematic way, so they only show the components relevant to the present invention.
[0024] A high-frequency resonance suppression method for connecting an LCL grid-connected inverter to a high-order distribution network, including an LCL grid-connected inverter and a control circuit, the LCL grid-connected inverter includes a DC voltage source connected to a DC voltage The filter capacitor at both ends of the source, the inverter connected to both ends of the DC voltage source, and the LCL filter, and the inverter is connected to the high-order distribution network through the LCL filter. The LCL grid-connected inverter is connected to the high-order distribution network to form the LCL grid-connected inverter and the high-order distribution network system.
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