Photovoltaic MPPT control method combining PO and improved SSA

The present invention relates to a binding Pamp; the invention discloses a photovoltaic MPPT control method based on improved SSA, and belongs to the technical field of solar maximum power point tracking. The method comprises the following steps: firstly, establishing a power-voltage characteristic...

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Bibliographische Detailangaben
Hauptverfasser: GUAN ZHIXUAN, HUANG BOYAN, JIANG SHULIN, ZHU QINGTAO, LIU BINHAO
Format: Patent
Sprache:chi ; eng
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Beschreibung
Zusammenfassung:The present invention relates to a binding Pamp; the invention discloses a photovoltaic MPPT control method based on improved SSA, and belongs to the technical field of solar maximum power point tracking. The method comprises the following steps: firstly, establishing a power-voltage characteristic curve of a photovoltaic array, then outputting a current optimal duty ratio, continuing to accurately track the maximum power point of the photovoltaic array under the condition that a switching condition is met, adjusting and outputting a final duty ratio, and finally, when the power of a global maximum power point meets a set restart condition, performing restart on the photovoltaic array. PWM is adjusted according to the output final duty ratio, a Boost circuit is controlled, and the photovoltaic array operates at the global maximum power point; the improved SSA method is introduced into an MPPT control link, and the convergence time of MPPT is obviously shortened; meanwhile, the improved dogvessel colony algori