Positive and negative sequence component separation method of low-voltage ride-through control of photovoltaic grid-connected inverter
A low-voltage ride-through and inverter technology, which is applied in photovoltaic power generation, single-grid parallel feeding arrangement, etc., can solve the problems of complex realization process and large calculation amount of software algorithm, achieve strong practicability and realize low-voltage ride-through control. Effect
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[0022] The present invention will be described in detail below with reference to the drawings and specific embodiments.
[0023] Such as figure 1 As shown, the input terminal of the voltage positive sequence and negative sequence component extraction unit is connected to the output terminal of the three-phase voltage detection unit and the output terminal of the genlock unit; the input terminal of the current positive sequence negative sequence component extraction unit is respectively connected to the three-phase current The output terminal of the detection unit and the output terminal of the genlock unit are connected; the input terminal of the genlock unit is respectively connected with the output terminal of the three-phase voltage detection unit and the two output terminals of the genlock unit; the input terminal of the current control unit They are respectively connected to the output terminal of the voltage positive sequence and negative sequence component extraction unit a...
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Abstract
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