Integrated power converter for multiple DC voltage sources

The Smarter grid is expected to be supported by various dc power sources such as solar cells or batteries. On the other hand, traditional ac loads like a directly connected induction motors will also be used. In the circumstances, a smart power conversion unit is one of key components, which can integrate these dc or ac apparatus and trade power among them. Authors have developed an integrated power converter based on a well-known circuit topology of flying capacitor multilevel converter. This paper describes the detail of the circuit topology and its parameter design process in order to supply a required power quality. Moreover, the circuit performance is also verified by simulation study.