Dual-mode control method for LC-type grid-connected inverter based on grid impedance self-adaptation
A technology of grid impedance and control method, used in photovoltaic power generation, electrical components, circuit devices, etc.
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[0083] The embodiment of the present invention provides a dual-mode control method for an LC grid-connected inverter based on grid impedance self-adaptation, so as to solve the problem that the existing inverters in the prior art are connected to the grid under different grid impedances. The current source or voltage source mode can only operate stably within a small range of grid impedance changes. The mutual switching between grid-connected modes expands the stable operation range of the inverter under different grid impedance conditions.
[0084] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention. Based on the embodiments of the present invention, other embodiments obtained by those skilled in the art without creative work are within the protection scope of this patent.
[0085] 1. The topologi...
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