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A method for establishing edge triggered pulse control switch state time was proposed to address the divergence of floating capacitor voltage and DC capacitor midpoint voltage in a 5-level active neutral point clamped ANPC-5L) inverter using the space vector pulse width SVPWM) algorithm in the g-h coordinate system. The fluctuation of floating capacitor voltage and the offset of DC side capacitor voltage were reduced. The principle that the fluctuation of the floating capacitor current causes the voltage deviation of the floating capacitor was used. Based on the principle that the same level is output under different switch states, and different switch states cause the current direction of the floating capacitor to be opposite, within a complete cycle, the floating capacitor current cancels out each other, reducing the voltage fluctuation of the floating capacitor. An active power flow model was established to balance the midpoint voltage of the DC side capacitor by reducing the voltage fluctuation of the floating capacitor. Finally,by building a simulation platform and comparing the capacitor voltage balance of ANPC-5L before and after the application of the proposed method, the validity of the method was verified. [ABSTRACT FROM AUTHOR]

International conventions and initiatives can promote collective action against global crises, and strengthen the efforts of countries to take concerted actions. This study summarizes the important international agendas related to marine ecological conservation and restoration, and analyzes China's policy mechanism in recent years. It believes that the policies in China and international documents are synergistic and effective in jointly strengthening efforts to respond to the global crisis. This study also puts forward some countermeasures and suggestions for China to build a detailed regional marine ecological map, strengthen ecological corridor restoration, improve scientific and technological support systems, and promote international cooperation in marine ecological conservation and restoration. [ABSTRACT FROM AUTHOR]