A single-phase photovoltaic grid-connected power generation system output power smoothing control device and control method
A technology for grid-connected power generation and output power, which is applied in photovoltaic power generation, circuit devices, single-network parallel feeding arrangements, etc., can solve problems such as high harmonic content of grid-connected current and frequent fluctuations in output power of photovoltaic power generation systems Strong interference ability, reduced waveform distortion rate, and reduced power fluctuation
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[0029] like Figure 1 to Figure 5 As shown, the control device of the present invention mainly includes a photovoltaic power source 1, a Boost converter 2, a DC filter capacitor C dc , a grid-connected inverter 3, a first bidirectional DC converter 6, a second bidirectional DC converter 7, a battery 5 and a photovoltaic grid-connected power generation system composed of a super capacitor 8. The photovoltaic power source 1 is connected to the DC bus through the boost converter 2 9, the battery 5 and the supercapacitor 8 are respectively connected to the DC bus 9 through the first bidirectional DC converter 6 and the second bidirectional DC converter 7, and the DC filter capacitor C dc Connected in parallel between two DC bus bars 9, the DC bus bar 9 is connected to the grid 4 through the grid-connected inverter 3, and the Boost converter is a boost converter.
[0030] It also includes a first control device and a second control device, the first control device controls the con...
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