Nowadays, the Medium Voltage Direct Current (MVDC) distribution represents an interesting possibility for improving the future shipboard power systems. The concept is based on the widespread use of power electronics equipment, in order to interface generating systems and loads to the MVDC bus (rated voltage higher than 1 kV). This technology is able to provide several advantages, among others easy integration of storage systems and reduction of the power system’s weight/volume. On the other hand, it is important to highlight the need of a proper voltage control system, even more in presence of tightly controlled load converters. Indeed, the contemporaneous presence of high bandwidth controlled converters and filtering stages (RLC filters) may determine dangerous voltage oscillations and instability after a load connection.

The Lab. EPGC activity is aimed at proposing innovative control techniques (e.g. Active Damping and Linearization via State Feedback) to control the on board voltage, ensuring the generating systems’ load sharing and guaranteeing the system stability in presence of relevant load step.

 

More info: prof. Giorgio Sulligoi