Research of Chain-SVG PWM Modulation Strategy

With the rapid development of control theory and microprocessor, many new rectifier control strategy has been born. In current power system, the rapid development of full-control devices, the high application of converter makes the electricity demand is higher and higher. At the same time the increase of power grid users, also bring more harmonic wave pollution, noise and other problems. Therefore, in the field of researching on inverter control has attracted more attention of more people. In order to meet the capacity of switching devices and reduce the switching frequency, often adopts multilevel topology structure [1]. This page based on the cascaded multilevel based on SVG topology structure, analysis of PWM control method and put forward a simple and feasible PWM control method and improve the utilization rate of DC side.