The Research On Solar Photovoltaic Array Inverter Control

With the continuous process of human society, people’s demand for energy isincreasing. However as a non-renewable fossil energy reserves are dwindling energy，at thesame time the fossil energy over the past centry has been a major energy to support theenecomic development. So the combustion productsare causing by it has great damage to thenatural environment of the human life. These people have all contributed to the continuedexploration of new energy. So The Wind, Solar and Nuclear energy began to occupy thedominant position because its Storage and contamination. Among them, the sustainabledevelopmen of solar energy in particular by national attention. And in the use of technologyin the solar, photovoltaic system with a higher value of researchand utilization.In photovoltaicgrid-connected system of photovoltaic inverter isconnected photovoltaic array and the key tothe whole system. How to control the inverter to maximize inverter utilization rate is animportant issue. Based on the studies in recent years the grid-connected photovoltaic inverterbased on, from the choice of control scheme and the hardware platform design ofphotovoltaic inverter to study the key technologies.The article mentioned in the inverterwithtwo stage structure, Former Boost circuit andinverter bridge circuit work together on system inverter work. After the DC-AC parts controlalgorithm. We compared the SPWM algorithm and SVPWM algorithm finally adopting spacevector pulse width modulation algorithm, The advantage of this method is to improve theutilization ratio of the DC electric, reduce switching losses. According to the principle ofspace vector pulse width modulation algorithm model, Through FPGA simulation verify thefeasibility of the algorithm.Hardware platform, According to the requirements of the system design andsystemimplementation of the required hardware platform, Including DC-DC, DC-AC main circuitcomponents. And the signal from the sensor to make full use of and circuit protection, Designof drive protection circuit circuit, for similar grid-connected inverter design.