Tutorial Recent Advances on Modulation and Control of Multilevel Converters

Tutorial Title: Recent Advances on Modulation and Control of Multilevel Converters

Presenters: Leopoldo G. Franquelo ( Spain & China); Fujin Deng (China); Sergio Vazquez (Spain); Binbin Li (China)

Multilevel converters have achieved significant success in the area of high-power applications (renewable energy conversion, conveyors, motor drives, power distribution systems, transportation, HVDC). The purpose of this tutorial is to provide a systematic overview of the multilevel converters in terms of their operation principles, latest achievements, emerging applications, and remaining challenges. The tutorial will start introducing modulation methods developed for multilevel converters: multilevel SPWM, space vector modulation, hybrid modulation and multilevel harmonic control. Grid connected application is a hot topic and is addressed including multilevel converters modeling, current and power controllers, synchronization methods and dc voltage balancing strategies. Special attention is devoted to the modular multilevel converter (MMC), with emphasis on the modulaiton, capacitor voltage balancing, circulating current control, and its application in HVDC and MV motor drives.