Dc Micro Network Interconnection Dual Port Public Power Grid Side Converter Station PWM Control Research

The growing demand for electricity, forcing excessive exploitation of traditional energy resources, lack of resources, air pollution and other issues continue to be more bad direction, therefore, the use of clean, renewable energy development of power industry is now urgently needed to implement. With the use of clean energy how to send its energy into the grid efficiently, to provide for everyone to use as the focus of the study. The micro-grid issued by the low-voltage DC into the high-voltage level of alternating current,which must be inseparable from the two links: boost and inverter. Power electronic devices through the composition of the circuit to complete these two links in the appropriate, and the rapid development of power electronics technology, but also for the step-up and inverter link provides technical support. SVPWM (Space Vectors Pulse Width Modulation) technology based power conversion devices in the power generation system is also widely used.Based on the analysis of the present stage of the development of photovoltaic industry, both at home and abroad made change for the common two levels of photovoltaic grid system, adopting the back-to-back converter to transform regulation in order to realize the interconnection requirements. This article uses the voltage space vector control to control system, the establishment of a dual PWM converter control model of the photovoltaic power generation. The parallel inverter through comparison and analysis to choose between master-slave control. Every part this paper has carried on the simulation analysis to determine the feasibility of solution, and analyze the simulation data.