| Abstract |
Modular Multi-level converters are the most discussed topic in the field of HVDC for AC to DC conversions. In thispaper it is shown that modular multi-level converters with series connected H-bridges have the capability to convert3-phase AC to single phase AC. Additionally M2C with full bridge modules has many degrees of freedoms in termsof frequency and voltage levels. In addition, it does not need any passive component for the AC to AC conversionlike in case of resonant converters. The output single phase AC can have a wide range of frequency, independent ofthe 3-phase grid frequency. This ability of M2C makes it suitable for varieties of application. For example in railwayelectrification, the conversion from single phase AC to 3 phase AC to run the three phase motors attached to thewheels. It can be used in solid state grid application for the high frequency isolation without using isolated DC/DCconverters. The control challenges of this type of the Modular Multilevel Converter are presented in this paper. |
